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Agenda & Packet 07-17-2018AGENDA CHANHASSEN PLANNING COMMISSION TUESDAY, JULY 17, 2018, 7:00 PM CITY COUNCIL CHAMBERS, 7700 MARKET BOULEVARD A.CALL TO ORDER B.PUBLIC HEARINGS 1.Control Concepts Site Plan Review 2.2040 Comprehenisve Plan C.NEW BUSINESS 1.Galpin Property PUD Concept Review D.APPROVAL OF MINUTES 1.Approval of Planning Commission minutes dated June 19, 2018 E.COMMISSION PRESENTATIONS F.ADMINISTRATIVE PRESENTATIONS 1.City Council Action Update 2.Future Planning Commission Agenda Items G.CORRESPONDENCE DISCUSSION H.ADJOURNMENT I.OPEN DISCUSSION NOTE: Planning Commission meetings are scheduled to end by 10:30 p.m. as outlined in the official bylaws. We will make every attempt to complete the hearing for each item on the agenda. If, however, this does not appear to be possible, the Chairperson will notify those present and offer rescheduling options. Items thus pulled from consideration will be listed first on the agenda at the next Commission meeting. PLANNING COMMISSION STAFF REPORT Tuesday, July 17, 2018 Subject Control Concepts Site Plan Review Section PUBLIC HEARINGS Item No: B.1. Prepared By Bob Generous, Senior Planner AICP File No: PC 201811 PROPOSED MOTION: The Chanhassen Planning Commission recommends approval of the site plan for a 54,600 squarefoot office, warehouse and manufacturing building subject to the conditions of approval in the staff report, and adoption of the Findings of Fact and Recommendation. SUMMARY OF REQUEST The applicant is requesting site plan approval for a 54,600 squarefoot, twostory office/warehouse/manufacturing building. APPLICANT Bauer Design Build, 14030 21st Avenue North, Plymouth, MN 55447 (763)9997217 mikel@bauerdb.com Zion Investments, LLC 7014 Willow Creek Road Eden Prairie, MN 55344 (952)4746200 cwatkins@ccipower.com SITE INFORMATION PRESENT ZONING: Planned Unit Development (PUD)/ Bluff Creek Overlay District LAND USE:Office Industrial Land Use ACREAGE: 5.2 acres DENSITY: 0.24 F.A.R. APPLICATION REGULATIONS Chapter 20, Article 2, Division 6, Site Plan Review Chapter 20, Article XXIII, Division 7, Design Standards for Commercial, Industrial and OfficeInstitutional Developments Arboretum Business Park Development Standards BACKGROUND On May 29, 2007, the Chanhassen City Council approved the following: PLANNING COMMISSION STAFFREPORTTuesday, July 17, 2018SubjectControl Concepts Site Plan ReviewSectionPUBLIC HEARINGS Item No: B.1.Prepared By Bob Generous, Senior Planner AICP File No: PC 201811PROPOSED MOTION:The Chanhassen Planning Commission recommends approval of the site plan for a 54,600squarefoot office, warehouse and manufacturing building subject to the conditions of approval inthe staff report, and adoption of the Findings of Fact and Recommendation.SUMMARY OF REQUESTThe applicant is requesting site plan approval for a 54,600 squarefoot, twostory office/warehouse/manufacturingbuilding.APPLICANTBauer Design Build, 14030 21st Avenue North, Plymouth, MN 55447 (763)9997217 mikel@bauerdb.com ZionInvestments, LLC 7014 Willow Creek Road Eden Prairie, MN 55344 (952)4746200 cwatkins@ccipower.comSITE INFORMATIONPRESENT ZONING: Planned Unit Development (PUD)/ Bluff Creek Overlay DistrictLAND USE:Office Industrial Land UseACREAGE: 5.2 acres DENSITY: 0.24 F.A.R. APPLICATION REGULATIONSChapter 20, Article 2, Division 6, Site Plan ReviewChapter 20, Article XXIII, Division 7, Design Standards for Commercial, Industrial and OfficeInstitutionalDevelopmentsArboretum Business Park Development StandardsBACKGROUND On May 29, 2007, the Chanhassen City Council approved the following: Preliminary and final plat for two lots and one outlot (Arboretum Business Park 7th Addition). Conditional Use Permit for development within the Bluff Creek Corridor. Site Plan for a 51,800 squarefoot office/warehouse building (Mamac Systems) with a variance to permit only 32 percent building transparency on the western building elevation and with a 20foot setback variance for the drive aisle in the southeast corner of the site for development within the Bluff Creek Corridor on Lot 1, Block 1, Arboretum Business Park 7th Addition. On May 29, 2007, the Chanhassen City Council approved the following: Preliminary and final plat for two lots and one outlot (Arboretum Business Park 7th Addition). Conditional Use Permit for development within the Bluff Creek Corridor. Site Plan for a 51,800 squarefoot office/warehouse building (Mamac Systems) with a variance to permit only 32 percent building transparency on the western building elevation and with a 20foot setback variance for the drive aisle in the southeast corner of the site for development within the Bluff Creek Corridor on Lot 1, Block 1, Arboretum Business Park 7th Addition. RECOMMENDATION The Chanhassen Planning Commission recommends approval of the site plan for a 54,600 squarefoot office, warehouse, and manufacturing building subject to the conditions of approval and adoption of the Findings of Fact and Recommendation. ATTACHMENTS: Planning Commission Staff Report 1811 Findings of Fact 1811 Development Review Application 1811 Email from Vanessa Strong to Bob Generous and George Bender re: RPBCWD dated 6/26/18 Control Concepts Site Plan Review Set Part 1 Control Concepts Site Plan Review Set Part 2 Affidavit of Mailing CITY OF CHANHASSEN PC DATE: July 17, 2018 CC DATE: August 13, 2018 REVIEW DEADLINE: August 14, 2018 CASE #: 2018-11 BY: JA, GB, RG, DN, JS, VS SUMMARY OF REQUEST: The applicant is requesting site plan approval for a 54,600 square-foot, two story office-warehouse-manufacturing building. LOCATION: Lot 2, Block 1, Arboretum Business Park 7th Addition (PID 25.0680020) 8077 Century Boulevard APPLICANT: Bauer Design Build Zion Investments, LLC 14030 21st Avenue N 7014 Willow Creek Road Plymouth, MN 55447 Eden Prairie, MN 55344 (763) 999-7217 (952) 474-6200 mikel@bauerdb.com cwatkins@ccipower.com PRESENT ZONING: Planned Unit Development (PUD)/ Bluff Creek Overlay District PROPOSED MOTION: “The Chanhassen Planning Commission recommends approval of the site plan for a 54,600 square-foot office, warehouse and manufacturing building subject to the conditions of approval and adoption of the findings of fact and recommendation.” Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 2 of 14 2020 LAND USE PLAN: Office Industrial ACREAGE: 5.23 acres DENSITY: 0.24 F.A.R. LEVEL OF CITY DISCRETION IN DECISION-MAKING: The city’s discretion in approving or denying a Site Plan is limited to whether or not the proposed project complies with Zoning Ordinance requirements. If it meets these standards, the city must then approve the site plan. This is a quasi-judicial decision. Notice of this public hearing has been mailed to all property owners within 500 feet. PROPOSAL/SUMMARY Site plan approval for a 54,600 square-foot, two story office-warehouse-manufacturing building. A 16,452 square foot, one story tenant space is proposed for the eastern end of the building. APPLICABLE REGULATIONS Chapter 20, Article 2, Division 6, Site Plan Review Chapter 20, Article XXIII, Division 7, Design Standards for Commercial, Industrial and Office- Institutional Developments Arboretum Business Park Development Standards BACKGROUND On May 29, 2007, the Chanhassen City Council approved the following: Preliminary and final plat for two lots and one outlot (Arboretum Business Park 7th Addition). Conditional Use Permit for development within the Bluff Creek Corridor. Site Plan for a 51,800 square-foot office/warehouse building (Mamac Systems) with a variance to permit only 32 percent building transparency on the western building elevation and with a 20- foot setback variance for the drive aisle in the southeast corner of the site for development within the Bluff Creek Corridor on Lot 1, Block 1, Arboretum Business Park 7th Addition. On September 24, 2001, the Chanhassen City Council approved Interim Use Permit (IUP) #2001-1 to grade a portion of the Arboretum Business Park development and Conditional Use Permit (CUP) #2001-8 to permit development within the Bluff Creek Overlay District. The IUP and CUP included this property. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 3 of 14 On July 28, 1997, the City Council approved the following: the ordinance for PUD #92-6 rezoning approximately 154 acres from Agricultural Estate, A2, to Planned Unit Development, PUD, and the PUD #92-6 granting final plat approval for Arboretum Business Park. On June 23, 1997, the City Council approved a Resolution that the AUAR be revised to incorporate the summary of issues and mitigation plan contained in the staff report, that the revisions to the Traffic Study prepared by SRF outlined in the staff report be incorporated into the study, and that the revised AUAR be adopted by the city. On May 27, 1997, the City Council approved the following: • Approved the first reading for rezoning the property from Agricultural Estate, A2, to Planned Unit Development, PUD. • Approved the preliminary PUD #92-6 for an office/industrial business park and preliminary plat approval for 12 lots, two outlots and associated right-of-way subject to the plans dated April 4, 1997, revised May 23, 1997, with conditions. • The City Council approved a Wetland Alteration Permit for Gateway Business Park subject to the conditions of preliminary PUD #92-6 approval. • The City Council approved Interim Use Permit #97-1 for Gateway West Planned Unit Development site subject to conditions. DISCUSSION The applicant is requesting site plan approval for a 54,600 square foot, two story, office- warehouse-manufacturing building. Site Constraints Wetland Protection The City of Chanhassen Wetland Inventory, the National Wetland Inventory, a review of historic aerial photography and a site visit reveal that wetland is present on the site. The applicant has submitted a wetland delineation and type determination for city review and approval. Bluff Protection There are no bluffs present on the site. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 4 of 14 Bluff Creek Primary Zone The eastern portion of the site is located within the Bluff Creek Primary Zone. A Conditional Use Permit was approved in 2007 for development in the overlay district. This area is proposed for preservation as permanent open space. A 40 foot structure setback with the first 20 feet in buffer is required. A trail connection is required by the city from Century Boulevard to the existing trail around the wetland complex. Shoreland Management The property does not lie within a shoreland overlay district. Floodplain Overlay This property does not lie within a floodplain. ARCHITECTURAL COMPLIANCE Size Portion Placement The main entry is located in the southwest corner of the building for the primary unit and on the north side for the second unit. The entrance shows an accent stone base at the entrance with a pewter colored metal canopy, below silver colored curtain wall panels around the windows, surrounded by red metal accent panels, topped with a pewter color, perforated metal Additional architectural articulation shall be provided for the second unit primary access, which may include adding a canopy element. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 5 of 14 Material, Color and Detail The applicant is proposing the predominate building material of two toned, gray and exposed aggregate, precast concrete wall panel, with partition lines and banding. Accent is added through the spacing of aluminum storefront systems, pewter colored metal panels, perforated metal panels, red accent panels and recessed walls at the storefront window locations and entrances. Height and Roof Design The building height is 38 feet to the top of the parapet. The parapet is topped with a red metal coping material. Facade Transparency The applicant meets the 50 percent glazing (window) requirements. Windows are provided in all office areas of the building. The windows are within silver colored anodized aluminum window frames. Loading areas, refuse area, etc. Delivery and service overhead doors are located on the south side of the building facing the building to the south. Trash enclosures are not shown around the building so staff assumes that trash is stored inside and brought out through the overhead doors at the time of pick-up. If exterior dumpsters are to be used, then trash enclosures will need to be constructed using material compatible with the building. Lighting The applicant is proposing 25-foot tall light poles around the parking lot as well as wall pack units around the building. LED lighting is proposed. All lighting shall be shielded and have 90 degree cut-off angles pursuant to city code. Signage The applicant is proposing signage on the west elevation of the building and a monument sign at the entrance. Signage must follow the standards for the IOP district. Signage may not be located within drainage and utility easements and will need to be moved to another location on the site or the easement may be vacated. Tenant signage may be located above the entrance of the tenant space on the north side of the building. A separate sign permit must be submitted for each sign. Site Furnishings The applicant is proposing constructing a trail as part of the development. They should add bike rakes as well as an outdoor seating/picnic area. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 6 of 14 Landscaping Minimum requirements for landscaping at the proposed development include 5,604 sq. ft. of landscaped area around the parking lot, 5 landscape islands or peninsulas, and 20 trees for the parking lot. The applicant’s proposed as compared to the requirements for landscape area and parking lot trees is shown in the following table: Required Proposed Vehicular use landscape area 5,064 sq. ft. >5,064 sq. ft. Trees/parking lot 20 trees 28 trees Islands or peninsulas/parking lot 5 islands/peninsulas 5 islands/peninsulas The applicant meets minimum requirements for trees and landscaping in the parking lot area. Bufferyard requirements: Required plantings Proposed plantings Bufferyard C – North prop. line, open space, 500 feet 7 overstory trees 12 Understory trees 15 Shrubs 1 overstory trees 12 Understory trees 20 Shrubs Bufferyard B – south prop. line, 500 feet 7 Overstory trees 15 Understory trees 22 Shrubs 8 Overstory trees 11 Understory trees 23 Shrubs The applicant shall add overstory trees to the north property line. A scattering of three oaks in the native seed planting will be acceptable. Staff also recommends that a shrub row be located between the front parking area and the property line to screen the parking lot. The rear wooded area on the lot is within the Bluff Creek Overlay District. This wooded area is in the primary zone and shall be preserved with the exception of the public trail connection. The developer shall install Conservation Area signage at the north and south property lines and at the trail. Access, Lot Frontage and Parking Location The lot fronts on Century Boulevard and proposes two access driveways. Parking is distributed on the western and northern sides of the building with truck docks located on the south side of the building. An access drive is provided around the entire building. Fire Lane No Parking areas for all the curbing except those directly adjacent to parking spaces will need to be painted yellow with NO PARKING FIRE LANE signs posted per city/fire code. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 7 of 14 Miscellaneous Sheets C4.1 & C4.2 shall be revised as follows: Utility notes 8 & 9. Sanitary sewer must be schedule 40. MPC table 701.1 Utility notes 11, 12 & 13. Minnesota rules 4715 is no longer the State plumbing code. Minnesota rules 4714 is the current code. Please change all references to 4714 along with the current code sections. Submit details on the storm detention system. Retaining walls over 4 feet in height require an engineered design. Plans must be submitted by a design professional on the proposed structure. All design information should be included (i.e. exiting, code analysis, proposed occupancies and occupancies). EASEMENTS There are several existing easements on this property as shown on the survey. Two existing drainage and utility easements are atypical. Staff believes standard drainage and utility easements associated with the lot lines are appropriate for this site. The atypical portions of the existing easements should be vacationed to avoid the need for additional encroachment easements. A permanent easement will be required to be granted over the city’s trail that will traverse through the property. PARKS & RECREATION The applicant is proposing a trail connection to the trial within Century Boulevard and the trail located within the Bluff Creek primary zone. No Park and Trail frees are being collected because there is no subdivision. The developer shall be responsible for planning, engineering, and constructing the “wetland trail.” Connection points for this new trail shall be the terminus of the Trotters Ridge trail, the intersection of Century Boulevard and West 82nd Street, and the intersection of Century Boulevard and Water Tower Place. Bid documents, including plans and specifications, shall be approved by the Park & Recreation Director and City Engineer prior to soliciting bids. Project bidding shall occur in a competitive environment with a minimum of three bids being received. The results of the bidding process shall be reviewed with the Park & Recreation Director and City Engineer prior to award. Cash payment for trail construction shall be made from the City of Chanhassen to the developer upon completion, inspection, and acceptance of the trail. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 8 of 14 Trail easements within Lot 2, Block 1, Arboretum Business Park 7th Addition (formerly Outlot C, Arboretum Business Park) shall be dedicated to the city to accommodate the “wetland trail”. UTILITIES The developer will extend sanitary sewer and water service to the building from the existing utility lines in Century Boulevard. The developer is proposing to wet-tap the existing 12 inch watermain in the street to establish an 8 inch service connection for water to the building. Engineering recommends the site designer utilize PVC C900 watermain grade pipe in lieu of ductile iron pipe. This recommendation is based on past experience regarding the local soils being corrosive in nature. The developer is proposing to add a manhole to connect the sanitary service from the site to the main in the street. There is an existing sanitary manhole 35 feet to the north of the proposed manhole. The developer should review routing the sanitary service to the existing manhole to avoid adding another manhole in the street that the city maintains and to save on installation costs. Engineering believes the connection at a manhole is an appropriate design because it will allow Staff to monitor the flow from the site if needed. GRADING The proposed site grading is a concern because the trail location is sandwiched between the wetland buffer and the proposed parking lot for the building concept. The site includes a retaining wall to maintain a standard trail design. The design standards include a maximum of a Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 9 of 14 5 percent slope lineally along the trail throughout the site as much as is feasible. The retaining wall, which wraps around the parking lot on the north and east sides of the building, is shown to be 17 feet in height above portions of the trail and there isn’t enough buffer area between the proposed parking lot and the trail for staff to recommend this as a safe and long term design. The site layout should be reviewed by the developer to address this concern. Staff also recommends the developer consider snow removal and storage as part of the site design. Staff is concerned there isn’t enough available stockpiling space for the snow. The southern portion of the retaining wall could be placed further to the east to create more storage area that works with the lot design. DRAINAGE AND EROSION CONTROL The proposed development will exceed one (1) acre of disturbance and will, therefore, be subject to the General Permit Authorization to Discharge Stormwater Associated with Construction Activity Under the National Pollution Discharge Elimination/State Disposal System (NPDES Construction Permit). All erosion control shall be installed and inspected prior to initiation of site grading activities. The proposed redevelopment will need Riley-Purgatory-Bluff Creek Watershed District (RPBCWD) permits. STORM WATER MANAGEMENT Article VII, Chapter 19 of City Code describes the required storm water management development standards. Section 19-141 states that “these development standards shall be reflected in plans prepared by developers and/or project proposers in the design and layout of site plans, subdivisions and water management features.” These standards include abstraction of runoff and water quality treatment resulting in the removal of 90% total suspended solids (TSS) and 60 percent total phosphorous (TP). Compliance Table Code Project (Control Concepts) Building Height 3 stories 2 stories 40 feet 38 feet (to top of parapet) Building Setback N* - 0' E# - 0' N - 129' E - 237' W - 50' S - 0' W - 80' S – 64’ * There is a wetland setback. # There is a 40-foot setback required from the Bluff Creek Primary Zone boundary. Parking Stalls 103 stalls 106 stalls Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 10 of 14 (Office = 4 spaces per 1,000 square feet ((15,135/1,000)*4= 61); Manufacturing = 1 per employee on largest shift (28 employees); warehouse = 1 space per 1,000 square feet for the first 10,000 square feet, then 1 space per 2,000 square feet ((10,000/1,000)+(7,962/2,000)=14) Parking Setback N - 0' E #- 0' N - 52' E - 200' W - 10' S - 0' W - 10' S - 11' Hard Surface Coverage 70% 58.6% Lot Area 43,560 sq. ft. 227,850 sq. ft. (5.23 ac.) RECOMMENDATION Staff recommends that the Planning Commission approve the site plan for a 54,600, two story building, plans prepared by Loucks and BDH & Young, dated 06-15-2018, subject to the following conditions: Building 1. Sheets C4.1 & C4.2 a. Utility notes 8 & 9. Sanitary sewer must be schedule 40. MPC table 701.1 b. Utility notes 11, 12 & 13. Minnesota rules 4715 is no longer the State plumbing code. Minnesota rules 4714 is the current code. Please change all references to 4714 along with the current code sections. 2. Submit details on the storm detention system. 3. Retaining walls over 4 feet in heights require an engineered design. 4. Plans must be submitted by a design professional on the proposed structure. All design information should be included (i.e. exiting, code analysis, proposed occupancies and occupancies). Environmental Resources 1. The applicant shall revise the landscape plan to add three bur oaks to the north property line native seed area. 2. The applicant shall revise the landscape plan to add a row of shrubs for screening of the parking area along Century Blvd. The screening shall be a minimum of 3 feet tall at maturity. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 11 of 14 3. The Bluff Creek Overlay District shall be shown on the site and landscape plans. 4. The applicant shall install Conservation Area signs at the edge of the Bluff Creek Overlay District at the north and south property lines and at the trail. The signs are available for purchase at the Chanhassen Public Works. Fire 1. Fire Lane No Parking areas for all the curbing except those directly adjacent to parking spaces will need to be painted yellow with NO PARKING FIRE LANE signs posted per city/fire code. Parks 1. The developer shall be responsible for planning, engineering, and constructing the “wetland trail.” Connection points for this new trail shall be the terminus of the Trotters Ridge trail, the intersection of Century Boulevard and West 82nd Street, and the intersection of Century Boulevard and Water Tower Place. Bid documents, including plans and specifications, shall be approved by the Park & Recreation Director and City Engineer prior to soliciting bids. Project bidding shall occur in a competitive environment with a minimum of three bids being received. The results of the bidding process shall be reviewed with the Park & Recreation Director and City Engineer prior to award. Cash payment for trail construction shall be made from the City of Chanhassen to the developer upon completion, inspection, and acceptance of the trail. 2. Trail easements within Lot 2, Block 1, Arboretum Business Park 7th shall be dedicated to the city to accommodate the “wetland trail”. Planning 1. The applicant shall enter into a site plan agreement and provide the security required by it prior to receiving a building permit. 2. Additional architectural articulation shall be provided for the second unit primary access. 3. Add bike racks as well as an outdoor seating/picnic area. 4. A separate sign permit application, review and approval shall be required prior to site sign installation. Water Resources and Engineering 1. The limits of the Bluff Creek Overlay District shall be identified throughout the plan set. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 12 of 14 2. Show the western curb line along Century Boulevard and the crosswalk at Water Tower Place throughout the plan set. 3. Vacate drainage and utility easements except the standard 10 foot wide easement associated with the front of the parcel in addition to the standard 5 foot wide easement associated with the side and rear portions of the parcel. 4. The wetland, wetland buffer, and the Bluff Creek Overlay District shall be designated as Outlots. 5. Provide a permanent easement over the trail throughout the parcel. 6. Apply for an Encroachment Agreement for the private sidewalk. 7. Add detailed design for the retaining wall including a profile, proposed construction materials, and railing/fence. The trail is designed to be on the bottom side of a retaining wall that has portions of it detailed to be 17 feet in height. The safety of the users of the trail needs to be coordinated. 8. Consider adjustment of the site design to facilitate maintenance and snow removal. 9. Include a detail for tree protection. 10. Add note to protect the existing line of trees on the shared property with the parcel to the south. 11. Detail asphalt cut-out and replacement in the street to facilitate the installation of the concrete aprons. 12. Install ADA pedestrian ramp for trail crossing at Century Boulevard. 13. Adjust curb radius design to meet city detail #5207 in association with the commercial entrances. A radius smaller than 20 feet may be appropriate for the shared property with the parcel to the south. 14. Adjust slope of the northern commercial entrance to meeting city detail #5207. 15. Replace any striping removed in Century Boulevard. 16. All parking stalls shall be 9 feet in width including handicapped stalls. 17. Add a radius to the trail where it connects to the existing bituminous trail to facilitate maintenance. Include additional tree removal area. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 13 of 14 18. All striping and signage shall meet the requirements of the MN-MUTCD manual. 19. Indicate lineal slope design for the trail. 20. All disturbed areas require a minimum of 6 inches of topsoil and must meet decompaction requirements. 21. Salvage existing topsoil and indicate stockpile location. 22. Add inlet protection in the catch basins on the west side of Century Boulevard. 23. Add rock construction entrance at the southern commercial entrance. 24. Extend the silt fence installation as appropriate to protect from construction. 25. The patch for the watermain connection shall be the full width of Century Boulevard. 26. Detail 5302A is shown twice on the SWPPP plan sheet. 27. Utilize C900 PVC pipe for the water service pipe material in lieu of DIP. Fittings shall be epoxy coated. 28. Sanitary manhole detail #5101 requires the pipe connections to be sealed with a cored and sealed connection. The utility plan details a build over manhole for the sanitary service connection. Add notes identifying the pipe connection requirements. 29. Review sanitary design from a future maintenance and a cost perspective. Adding Sanitary manhole #1 approximately 35 feet to the south of an existing manhole is questionable. The sanitary service line could be routed directly to the existing manhole. The invert would need to be reconstructed and a cored and booted connection would be required. 30. Applicant is permitted a connection to municipal stormdrain system after meeting treatment and discharge requirements of city and RPBCWD. Applicant is responsible for ensuring municipal system is capable of handling the additional capacity. 31. Applicant is responsible for any improvements necessary to the municipal system to meet capacity and regulatory requirements from the point of connection up to and including the outlet/receiving water body 32. Connection is not permitted in catchbasin. Must connect to storm main in Century Blvd. Include access manhole. Invert elevation in the manhole shall allow for 0.1 inches of fall through the structure. Planning Commission 8077 Century Boulevard – Control Concepts July 18, 2018 Page 14 of 14 33. Access MH missing from western most section of Contech structure. 34. Proprietary filtration devices should be used as pretreatment vs post treatment. 35. Identify snow storage location on plans. 36. Identify stockpile locations on plan. 37. Bluff Creek Overlay District (BCOD) signs and locations are required on plans. Signs are required at each point the BCOD crosses the property boundary, every 100 feet, every point of deflection. 38. Include BCOD sign detail. 39. The proposed redevelopment will need Riley-Purgatory-Bluff Creek Watershed District (RPBCWD) permits. 40. It is the applicant’s responsibility to ensure and submit proof that permits are received from all other agencies with jurisdiction over the project (i.e. Army Corps of Engineers, DNR, MnDOT, Carver County, RPBCWD, Board of Water and Soil Resources, PCA, etc.). 41. Project will require stormwater management fees associated with city development review and permitting process. 42. The city is in agreement with the RPBCWD comments identified in the email dated June 26, 2018 titled ‘RPBCWD Permit 2018-43: Control Concepts – Initial Completeness Review Comments.’ With one exception: J10 – the city requests applicant provide additional performance monitoring field data to support manufacturers removal estimates. 1 CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA FINDINGS OF FACT AND RECOMMENDATION IN RE: Application of Bauer Design Build and Zion Investments, LLC for Site Plan approval for a 54,600 square foot, two story, office, warehouse and manufacturing building. On July 17, 2018, the Chanhassen Planning Commission met at its regularly scheduled meeting to consider the application of Bauer Design Build and Zion Investments, LLC for site plan approval. The Planning Commission conducted a public hearing on the proposed development preceded by published and mailed notice. The Planning Commission heard testimony from all interested persons wishing to speak and now makes the following: FINDINGS OF FACT 1. The property is currently zoned Planned Unit Development, PUD. 2. The property is guided in the Land Use Plan for Office Industrial uses. 3. The legal description of the property is: Lot 2, Block 1, Arboretum Business Park 7th Addition. 4. Site Plan Review: a. Is consistent with the elements and objectives of the city's development guides, including the comprehensive plan, official road mapping, and other plans that may be adopted; Finding: The proposed development is compliance with the elements and objectives of the city's development guides as well as meeting the design standards for Arboretum Business Park. b. Is consistent with site plan division; Finding: The proposed development complies with the Site Plan review requirements of the Chanhassen City Code. c. Preserves the site in its natural state to the extent practicable by minimizing tree and soil removal and designing grade changes to be in keeping with the general appearance of the neighboring developed or developing or developing areas; Finding: The site has been significantly altered by previous grading on the parcel. The proposed development is in keeping with the general appearance of the neighboring 2 developed areas. The development is preserving the Bluff Creek primary zone located on the site. d. Creates a harmonious relationship of building and open space with natural site features and with existing and future buildings having a visual relationship to the development; Finding: The proposed development creates a harmonious relationship of building and open space with natural site features and with existing and future buildings having a visual relationship to the development. e. Creates a functional and harmonious design for structures and site features, with special attention to the following: 1) An internal sense of order for the buildings and use on the site and provision of a desirable environment for occupants, visitors and general community; 2) The amount and location of open space and landscaping; 3) Materials, textures, colors and details of construction as an expression of the design concept and the compatibility of the same with adjacent and neighboring structures and uses; and 4) Vehicular and pedestrian circulation, including walkways, interior drives and parking in terms of location and number of access points to the public streets, width of interior drives and access points, general interior circulation, separation of pedestrian and vehicular traffic and arrangement and amount of parking. Finding: The proposed development creates a functional and harmonious design for structures and site features, subject to compliance with the conditions of approval. e. Protects adjacent and neighboring properties through reasonable provision for surface water drainage, sound and sight buffers, preservation of views, light and air and those aspects of design not adequately covered by other regulations which may have substantial effects on neighboring land uses. Finding: The proposed development protects adjacent and neighboring properties through reasonable provision for surface water drainage, sound and sight buffers, preservation of views, light and air and traffic circulation. 5. The planning report #2018-11, dated July 17, 2018 prepared by Robert Generous, et al, is incorporated herein. 3 RECOMMENDATION The Planning Commission recommends that the City Council approve the Site Plan for Control Concepts subject to the recommended conditions of approval contained within the staff report. ADOPTED by the Chanhassen Planning Commission this 17th day of July 2018. CHANHASSEN PLANNING COMMISSION BY:___________________________________ Its Chairman From:Strong, Vanessa To:Generous, Bob; Bender, George Subject:FW: RPBCWD Permit 2018-043: Control Concepts - Initial Completeness Review Comments Date:Tuesday, June 26, 2018 8:35:59 AM Attachments:image001.png FYI From: Scott Sobiech <SSobiech@barr.com> Sent: Tuesday, June 26, 2018 8:25 AM To: 'tgruys@loucksinc.com' <tgruys@loucksinc.com> Cc: Terry Jeffery <tjeffery@rpbcwd.org>; Strong, Vanessa <VStrong@ci.chanhassen.mn.us>; Scott Sobiech <SSobiech@barr.com> Subject: RPBCWD Permit 2018-043: Control Concepts - Initial Completeness Review Comments Trevor, The RPBCWD received your application and supporting information for the proposed Control Concepts Development in Chanhassen on June 19, 2018. The application has been assigned permit number 2018-043. However, the application is considered incomplete. A review of the submitted information has generated the following questions or comments. These are only preliminary comments and do not constitute an exhaustive review of the submitted materials. Additional comments will be generated with complete submittal. Many of the items listed below will need to be addressed before a recommendation can be made to the RPBCWD Board of Managers. The application will be considered incomplete until the following information is received: IC1. Because the land disturbing activities is upgradient from regulated wetlands, the proposed development will trigger Rule D – Wetland and Creek Buffers. The applicant must submit information as stipulated in Rule D, subsection 7 and demonstrate conformance with all the criteria in subsection 3 IC2. The District requires that the native electronic models be provided with the submittal. The existing and proposed electronic HydroCAD and proposed condition MIDS models must be provided for review. The model inputs must match design and plan information. IC3. Section 2.1 of Rule A requires the application be signed by the owner(s) of the property. The application indicates the property is owned by Zion Investments LLC which does not align with the information on the Caver County Property website. The website indicates the property is owned by CHASKA GATEWAY PARTNERS. Provide documentation confirming Zion Investments LLC is the property owner or they must either sign the application or provide documentation that they are aware of, and approve of Zion Investments LLC. applying on their behalf. Because the project will involve 4 acres of land-disturbing activity, the project must conform to the requirements in the RPBCWD Erosion and Sediment Control rule (Rule C, Subsection 2.1). To conform to the RPBCWD Rule C the following revisions are needed: C1. Redundant perimeter protection (e.g., double rows of silt fence) is needed between the land disturbing activities and the wetlands on-site (i.e., wetland in NW corner of site). C2. The inspection requirements on sheet C3.3 do not align with RPBCWD requirements. The inspection frequency during construction must be revised to meet the RPBCWD rules as follows: The permittee must, at a minimum, inspect, maintain and repair all disturbed surfaces and all erosion and sediment control facilities and soil stabilization measures every day work is performed on the site and at least weekly until land-disturbing activity has ceased. Thereafter, the permittee must perform these responsibilities at least weekly until vegetative cover is established. C3. Note 3 on sheet C3.1 indicates four (4) inches of topsoil. Final site stabilization measures must specify that at least six (6) inches of topsoil or organic matter be spread and incorporated into the underlying soil during final site treatment wherever topsoil has been removed. Please revise so that a minimum of 6 inches of top soil is required. C4. The name and contact information of the general contractor responsible for the site must be provided (this information does not need to be provided prior to making a recommendation to the RPBCWD Board). Because the proposed work triggers RPBCWD’s Stormwater Management Rules (Rule J)and the regulated wetland in the NW corner of the site is downgradient of the activities,Rule D, Subsections 2.1a and 3.1 require buffer around these wetlands. To conform to theRPBCWD Rule D the following revisions are needed: D1. The applicant must submit information as stipulated in Rule D, subsection 7 D2. The wetland function and values assessment using MnRAM is needed for the downgradient wetlands to determine the value of the buffer according to Appendix D1 of Rule D, the buffer location and the required average/minimum widths. Without the MnRAM information the wetlands on the parcel could be assumed to be exceptional value and an 80 foot average, 40 foot minimum buffer width could be provided. D3. The buffer area and signage location must be clearly shown on the plans. The buffer must be indicated by permanent, free-standing markers at the buffer’s upland edge. A marker must be placed along each lot line, with additional markers at an interval of no more than 200 feet or where the buffer changes direction.. D4. Before any work subject to District permit requirements commences, buffer areas and maintenance requirements must be documented in a maintenance declaration recorded with the County. A draft declaration template is available for download from the RPBCWD website (www.rpbcwd.org/permits). The draft must be submitted to the District for review and approval prior to recording. Because the project will involve 4 acres of land-disturbing activity, the project must conformto RPBCWD’s stormwater management rule as described in Rule J, Subsection 2. Toconform to the RPBCWD Rule J the following revisions are needed: J1. Please provide the native electronic HydroCAD and water quality models for review. J2. The project must limit peak runoff flow rates to that from existing conditions for the two-, 10- and 100-year frequency storm events using a nested 24-hour rainfall distribution, and a 100-year frequency, 10-day snowmelt event for all points where stormwater discharge leaves the site. According to Table 1.1 there will be a significant increase in site discharge to Century Boulevard under proposed conditions which does not meet the requirement of Rule J, subsection 3.1a. In addition, altering the hydrology of the wetland by reducing the discharge volume has the potential to adversely impact the existing wetland. The proposed design should be revised to provide rate control at all point where discharge leaves the site. J3. The project appears to provide no runoff abstraction based on the narrative and plan sheets. The proposed stormwater management facility must be reconfigured to provided abstraction in accordance with Rule J, subsection 3.1b. a. The presence of Hydrologic Soil Group (HSG) D soils onsite does not automatically qualify an applicant as having a restricted site. Previous permit applicants, also having sites with HSG D soils and clay identified in boring, have been able to provide the required abstraction volume of 1.1” of runoff using a design infiltration rate of 0.06 in/hr (MN Stormwater Manual). While the geotechnical report demonstrates the clay soils present in the upper soil horizon has a significantly lower infiltration rate than those published in the MN Stormwater Manual, the geotechnical report does not provide testing for the poorly graded sand or silty sand encountered in boring ST-4. These types of soils are conducive to infiltration, thus the site does not appear to be a restricted site . b. Infiltration appears feasible at soil boring ST-4 where poorly graded sand or silty sand was encountered at an elevation above the bottom of the proposed underground detention system. This suggests that an underground infiltration/detention chamber is feasible and the stormwater management facilities can to be reconfigured to utilize infiltration at ST-4. c. In addition, the landscaping plans indicate that an irrigation system will be installed. The proposed irrigation system could take advantage of the proposed stormwater management facility and reuse the runoff, thus providing additional abstraction. It appears feasibly to irrigate the lawn and areas planted with native vegetation to maximize abstraction on the site. J4. Without the native HydroCAD model it is unclear if runoff is calculated separatelyfrom impervious and pervious areas. Runoff should be calculated separately frompervious and impervious surfaces in the HydroCAD model. J5. Several of the times of concentration for proposed conditions are direct entry of 7 minutes. Please provide supporting documentation supporting those times of concentration. J6. The printout from HydroCAD suggest a two stage outlet from the underground detention system but I was unable to locate a detail of the outlet in the plan set. Please provide a detail of the outlet on the construction drawings. J7. The printout from HydroCAD suggests an 18” pipe downstream of the underground detention system but the plans indicate a 12-inch HDPE. Please review, clarify, and revise as needed. J8. Please clarify if the plan view footprint of the proposed retaining walls is included in the impervious area calculations. Based on permits issued by the RPBCWD Board of Managers, retaining walls are considered impervious surface and stormwater treatment must be provided for any new or reconstructed retaining walls. J9. Based on the construction plans, it appears the project will involve land disturbing activities on Century Boulevard. a. All disturbed impervious surface areas must be accounted for in the stormwater calculations and the applicant must demonstrate conformance with criteria in Rule J. J10. The pollutant removals estimated by the MIDS model appear to only reflect the proposed Jellyfish BMP. The proposed Jellyfish is a proprietary device. It is my understanding that the manufacturer provided removal estimates assume no upstream treatment. By routing runoff from the upstream BMPs to the Jellyfish in MIDS the model will removal TSS and TP (at whatever percentage entered) regardless of the inflow composition, thus over estimating the removal potential. Also, RPBCWD has allowed the Jellyfish BMP to be installed at one other location in the District and required the applicant monitor performance for two years to confirm the manufacturer removals. The first year of monitoring data indicated the jellyfish is underperforming for TSS (13%-96%) and significantly underperforming for TP (-64%-45%). After seeing those results it will be difficult to approve the same device at another location. To avoid the potential pollutant removal shortfall, I suggest revising the design to exclude the Jellyfish. J11. The water quality information provided indicates the required 90% TSS and 60% TP removals are not being achieved by the proposed design. The design must be modified to achieve the pollutant removals required in Rule J subsection 3.1c. J12. The MIDS modeling does not appear to account for the treatment capacity of the underground detention system. The modeling must be update to account for all proposed BMPs. You might consider using the P8 model to better estimate the removal in the underground detention system. J13. Permit applicant must provide a maintenance and inspection plan. The plan must be documented in a form acceptable to the District. A draft maintenance agreement is available on the permits page of the RPBCWD website. (http://www.rpbcwd.org/permits/) Review of the additional materials will result in additional comments that will need to be addressed prior to issuing a permit. We will do everything we can to ensure that we move you through the permitting process as quickly as possible. Please contact me or Terry Jeffery (cc’d on this e-mail, 952-807-6885) with any questions or concerns. Thank you, Scott Sobiech, CFM, PE Vice President Senior Water Resources Engineer Minneapolis, MN office: 952.832.2755 ssobiech@barr.com www.barr.com If you no longer wish to receive marketing e-mails from Barr, respond to communications@barr.com and we willbe happy to honor your request. BUILDING OWNER CONTROL CONCEPTS 18760 LAKE DRIVE EAST CHANHASSEN, MINNESOTA 55317 EMAIL: PHONE: (XXX) XXX-XXXX ARCHITECT BDH+YOUNG INTERIORS | ARCHITECTURE 7001 FRANCE AVENUE SOUTH SUITE 200 EDINA, MN 55435 JEFF GEARS EMAIL: JGEARS@BDHYOUNG.COM PHONE: 952-345-8322 GENERAL CONTRACTOR BAUER DESIGN BUILD 14030 21ST AVENUE N PLYMOUTH, MN 55447 MICHAEL LAQUA EMAIL:MIKE.L@BAUERDB.COM PHONE: 763-972-0000 CIVIL ENGINEER / LANDSCAPE ARCHITECT LOUCKS 7200 HEMLOCK LANE, SUITE 300 MAPLE GROVE, MN 55369 JON DONOVAN EMAIL:JDONOVAN@LOUCKSINC.COM PHONE: 763-496-6724 STRUCTURAL ENGINEER VAA 2300 BERKSHIRE LANE NORTH, SUITE 200 PLYMOUTH, MN 55441 DAVE JOHNSON EMAIL:DJOHNSON@VAAENG.COM PHONE: 763-577-9115 CONTACT LIST PROJECT MANAGER CALHOUN COMMERCIAL 5810 WEST 78TH STREET, SUITE 150 MINNEAPOLIS, MN 55439 PATRICK L SCHNEIDER EMAIL:PATRICKS@CALHOUNCOMMERCIAL.COM PHONE: 952-929-2011 LOCATION MAP NCENTURY BLVDARBORETUM BLVD / HWY 5 HAZELTINE BLVD / HWY 41C O U L T E R B L V D WATER TOWER PL PROJECT SITE E 82ND ST 7001 France Avenue South, Suite 200 Edina, Minnesota 55435 952-893-9020 fax 952-893-9299 www.bdhyoung.com Project Information Issue Record © bdh+young Sheet Title Sheet Information Job Code Drawn By Reviewed By Date Printed Name Signature Lic #DateNO T FOR CONSTRUCTIONI hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of DescriptionDateNo.D:\2018 Revit Local\A18_Control-Concepts_007700_NafeM.rvt2018-06-15 11:38:00AMCONTROL CONCEPTS 8077 CENTURY BLVD. CHANHASSEN, MN T0.01 00770 MINNESOTA JEFFREY GEARS 2018-06-15 50937 TITLE SHEET 2018-06-15 KF/MN JG 8077 CENTURY BLVD. CHANHASSEN, MN CONTROL CONCEPTS OMNUJMSJNR pfqb=mi^k=obsfbt=pbq SHEET INDEX - PRELIMINARY NO NAME 0.0 - GENERAL T0.01 TITLE SHEET CIVIL . ALTA/NSPS LAND TITLE SURVEY C1-1 EXISTING CONDITIONS C1-2 DEMOLITION PLAN C2-1 SITE PLAN C3-1 GRADING PLAN C3-2 SWPPP C3-3 SWPPP NOTES C4-1 SANITARY SEWER & WATERMAIN PLAN C4-2 STORM SEWER PLAN C8-1 CIVIL DETAILS C8-2 CIVIL DETAILS C8-3 CIVIL DETAILS E001 SITE PHOTOMETRIC PLAN LANDSCAPE L1-1 LANDSCAPE PLAN L1-2 LANDSCAPE DETAILS ARCHITECTURAL 0.0 - GENERAL A1.11. PRELIMINARY FLOOR PLAN - LEVEL 01 A1.12. PRELIMINARY FLOOR PLAN - LEVEL 02 A6.00. PRELIMINARY ELEVATIONS LOUCKS W:\2017\17516\CADD DATA\SURVEY\_dwg Sheet Files\S17516-ALTAPlotted: 06 /13 / 2018 1:47 PM7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL SUBMITTAL/REVISIONS PROFESSIONAL SIGNATURE QUALITY CONTROL CADD files prepared by the Consultant for this project are instruments of the Consultant professional services for use solely with respect to this project. These CADD files shall not be used on other projects, for additions to this project, or for completion of this project by others without written approval by the Consultant. With the Consultant's approval, others may be permitted to obtain copies of the CADD drawing files for information and reference only. All intentional or unintentional revisions, additions, or deletions to these CADD files shall be made at the full risk of that party making such revisions, additions or deletions and that party shall hold harmless and indemnify the Consultant from any & all responsibilities, claims, and liabilities. CADD QUALIFICATION 05/08/18 SURVEY ISSUED 06/12/18 ADDED WATERMAIN License No. Date I hereby certify that this survey, plan or report was prepared by me or under my direct supervision and that I am a duly Licensed Land Surveyor under the laws of the State of VICINITY MAP Field Crew Max L. Stanislowski - PLS 48988 Project Lead Drawn By Checked By Loucks Project No. Minnesota. 17516 MLS NRS MLS DMP/GCF 05/08/18 CONTROL CONCEPTS 8077 CENTURY BOULEVARD CHANHASSEN, MN 55317 BAUER DESIGN BUILD 14030 21ST AVENUE NORTH PLYMOUTH, MN 55447 ALTA/NSPS LAND TITLE SURVEY 1 OF 1 N SCALE IN FEET 0 30 60 DESCRIPTION OF PROPERTY SURVEYED (Per Schedule A of the herein referenced Title Commitment) Lot 2, Block 1, Arboretum Business Park 7th Addition, according to the recorded plat thereof, Carver County, Minnesota. Abstract and Torrens Property TITLE COMMITMENT EXCEPTIONS (Per Schedule B, Part II of the herein referenced Title Commitment) The property depicted on this survey and the easements of record shown hereon are the same as the property and the easements described in the Commitment for Title Insurance issued by Commercial Partners Title, LLC, as agent for Chicago Title Insurance Company, File No. 54247, effective date March 21, 2018. The numbers below correspond to those in the title commitment. 1-8 & 10-16 do not require comment. 9.Easement for utilities and drainage as shown on the recorded plat of Arboretum Business Park 7th Addition and plat of Arboretum Business Park. Shown hereon around the entire site. 17.Subject to the following matters as shown on the survey prepared by Schoell Madson dated April 17, 2007: a)Encroachment of bituminous trail along the West line of the subject property. Shown hereon. ALTA/NSPS OPTIONAL TABLE A NOTES (The following items refer to Table A optional survey responsibilities and specifications) 1.Monuments placed (or a reference monument or witness to the corner) at all major corners of the boundary of the property, unless already marked or referenced by existing monuments or witnesses to the corner are shown hereon. 2.The address, if disclosed in documents provided to or obtained by the surveyor, or observed while conducting the fieldwork is 8077 Century Boulevard, Chanhassen, MN 55317. 3.This property is contained in Zone C (area of minimal flooding) per Flood Insurance Community Panel No. 2700510005B, effective date of July 2, 1979. 4.The Gross land area is 227,850 +/- square feet or 5.23 +/- acres. 7.(a) There are no observable buildings on this site. 8.Substantial features observed in the process of conducting fieldwork, are shown hereon. 9.There are no striped parking stalls on this site. SURVEY REPORT 1.The Surveyor was not provided utility easement documents for the subject property except for those shown on the Survey. 3.The bearings for this survey are based on the Carver County Coordinate System NAD 83 (1986 Adjust). 4.Benchmark: MnDOT monument JON MNDT, located in Chanhassen, 0.25 mile south along Trunk Highway 41 from the junction of Trunk Highway 41 and Trunk Highway 5 in Chanhassen, at Trunk Highway 41 milepoint 6.9, 83.5 feet north of a power pole, 26.0 feet west of Trunk Highway 41, 81.02 Feet north of reference mark 1, 2.0 feet east of a witness post. Elevation = 1027.44 (NGVD29) Site Benchmark: Top nut of fire hydrant located on the westerly side of the site along the westerly side of Century Boulevard. Elevation = 975.95 (NGVD29) 5.We have shown underground utilities on and/or serving the surveyed property per Gopher State One-Call Ticket Nos. 181153120 & 181154099. The following utilities and municipalities were notified: JAGUAR COMMUNICATIONS (507)219-8081 CITY OF CHANHASSEN (952)227-1300 CENTURYLINK (800)283-4237 LIGHTCORE (800)283-4237 LIFETIME FITNESS (507)219-8081 CENTER POINT ENERGY (406)541-9571 MEDIACOM (800)778-9140 MINNESOTA VALLEY ELECTRIC (952)492-8210 LEVEL 3 COMMUNICATIONS (877)366-8344 XCEL ENERGY (800)848-7558 i.Utility operators do not consistently respond to locate requests through the Gopher State One Call service for surveying purposes such as this. Those utility operators that do respond, often will not locate utilities from their main line to the customer's structure or facility. They consider those utilities “private” installations that are outside their jurisdiction. These “private” utilities on the surveyed property or adjoining properties, may not be located since most operators will not mark such "private" utilities. A private utility locator may be contacted to investigate these utilities further, if requested by the client. ii.The locations of underground utility lines shown hereon is an approximation based on available maps, unless otherwise noted on the survey. iii.Maps provided by those notified above, either along with a field location or in lieu of such a location, are very often inaccurate or inconclusive. EXTREME CAUTION MUST BE EXERCISED BEFORE AN EXCAVATION TAKES PLACE ON OR NEAR THIS SITE. BEFORE DIGGING, YOU ARE REQUIRED BY LAW TO NOTIFY GOPHER STATE ONE CALL AT LEAST 48 HOURS IN ADVANCE AT 811 or (651) 454-0002. 6.The location of wetland delineation markers, which have been determined by a qualified specialist, are shown hereon. CERTIFICATION To Control Concepts Inc., a Minnesota corporation, Chaska Gateway Partners Limited Partnership, a Minnesota limited partnership, Commercial Partners Title, LLC and Chicago Title Insurance Company: This is to certify that this map or plat and the survey on which it is based were made in accordance with the 2016 Minimum Standard Detail Requirements for ALTA/NSPS Land Title Surveys, jointly established and adopted by ALTA and NSPS, and includes Items 1 - 4, 7(a), 8, and 9 of Table A thereof. The field work was completed on May 4, 2018. Date of Plat or Map: June 12, 2018 ______________________________________________ Max L. Stanislowski, PLS Minnesota License No. 48988 mstanislowski@loucksinc.com 9 9 9 9 17 9 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 9 SURVEY LEGEND C1.1 REMOVE TREE TYP REMOVE TREE PER CONVERSATION WITH TODD HOFFMAN (PARK & RECREATION DIRECTOR) REMOVE BITUMINOUS PATH CLEAR AND GRUB AS NEEDED FOR BITUMINOUS PATH CONSTRUCTION REMOVE FENCE AS NEEDED FOR BITUMINOUS PATH CONSTRUCTION SAW-CUT, REMOVE, & REPLACE BITUMINOUS AS NEEDED FOR UTILITY CONSTRUCTION REFER TO UTILITY PLAN PROTECT EXISTING UTILITIES DURING DRIVEWAY AND UTILITY CONSTRUCTION REMOVE & RELOCATE EXISTING LIGHT POLE COORDINATE LOCATION WITH CITY REMOVE & RELOCATE EXISTING SIGN COORDINATE LOCATION WITH CITY REMOVE BITUMINOUS PATH REMOVE CURB & GUTTER REMOVE CURB & GUTTER REMOVE BITUMINOUS PATH PROTECT EXISTING TREE PROTECT EXISTING TREE PROTECT EXISTING TREE PROTECT EXISTING TREE PROTECT EXISTING TREES PROTECT EXISTING UTILITIES DURING DRIVEWAY CONSTRUCTION 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 9 SURVEY LEGEND C1.2 REMOVE EXISTING TREES/WOODS REMOVE EXISTING CURB & GUTTER, RETAINING WALLS, FENCE, ETC. REMOVE EXISTING MANHOLES, POWER POLES, LIGHT POLES, BOLLARDS, PARKING METERS, SIGNS, ETC. REMOVE EXISTING TREES REMOVE EXISTING UTILITIES REMOVE EXISTING BITUMINOUS PAVING DEMOLITION LEGEND 1.CONTRACTOR SHALL REMOVE AND/OR RELOCATE EXISTING PRIVATE UTILITIES AS NECESSARY. CONTRACTOR TO COORDINATE ACTIVITIES WITH UTILITY COMPANIES. 2.CONTRACTOR SHALL PROTECT SURFACE AND SUBSURFACE FEATURES NOT NOTED FOR REMOVAL. 3. CONTRACTOR TO CLEAR AND GRUB EXISTING VEGETATION WITHIN CONSTRUCTION LIMITS, STRIP TOP SOIL, AND STOCKPILE ON-SITE. REFER TO GRADING PLAN AND SWPPP FOR SEDIMENT AND EROSION CONTROL REQUIREMENTS. 4.CLEAR AND GRUB AND REMOVE ALL TREES, VEGETATION AND SITE DEBRIS PRIOR TO GRADING. ALL REMOVED MATERIAL SHALL BE HAULED FROM THE SITE DAILY. ALL CLEARING AND GRUBBING AND REMOVALS SHALL BE PERFORMED PER THE CONTRACT SPECIFICATIONS. EROSION CONTROL MEASURES SHALL BE IMMEDIATELY ESTABLISHED UPON REMOVAL. SEE THE STORMWATER POLLUTION PREVENTION PLAN (SWPPP). 5.CONTRACTOR SHALL REMOVE ALL SITE SURFACE FEATURES WITHIN REMOVAL LIMITS UNLESS OTHERWISE NOTED. SITE DEMOLITION NOTES NOPARKINGNOPARKINGNOPARKINGMATCH EXISTING CURB & GUTTER 8 20 13 34 31 35'R 15'R 15'R 5'R 5'R 15'R 15'R 35'R 20'R 56'R 5'R 5'R 76'R 20'R413'R10'R 5'R 5'R 5'R 5'R 30'R 5'R 10'R 5'R 55'R18'26'18'4.7'10'35'9' TYP 9' TYP 8' TYP 8' TYP 8' TYP 8' TYP 6.7'9'26' 18' 26' 18'9'TYP9'TYP18'26'6.7'2.7'10.7'6.7' 3' 6'8'28.1'89.6'9.7'26' 4.7'30.9'45.8'MATCH EXISTING CURB & GUTTER MATCH EXISTING CURB & GUTTER MATCH EXISTING CURB & GUTTER MATCH EXISTING BITUMINOUS PATH MATCH EXISTING BITUMINOUS PATH MONUMENT SIGN RETAINING WALL TYP-SEE DETAIL RETAINING WALL TYP-SEE DETAIL B612 CURB & GUTTER TYP-SEE DETAIL HEAVY DUTY BITUMINOUS PAVEMENT TYP-SEE DETAIL CONCRETE PAVEMENT TYP-SEE DETAIL HEAVY DUTY BITUMINOUS PAVEMENT TYP-SEE DETAIL LIGHT DUTY BITUMINOUS PAVEMENT TYP-SEE DETAIL CONCRETE SIDEWALK TYP-SEE DETAIL CONCRETE STOOP COORDINATE WITH ARCHITECTURAL AND STRUCTURAL PLANS GENERATOR AND TRANSFORMER PAD COORDINATE WITH MECHANICAL PLANS CONCRETE STOOP COORDINATE WITH ARCHITECTURAL AND STRUCTURAL PLANS CONCRETE STOOP COORDINATE WITH ARCHITECTURAL AND STRUCTURAL PLANS CONCRETE STOOP COORDINATE WITH ARCHITECTURAL AND STRUCTURAL PLANS LIGHT DUTY BITUMINOUS PAVEMENT TYP-SEE DETAIL LIGHT DUTY BITUMINOUS PAVEMENT TYP-SEE DETAIL B612 CURB & GUTTER TYP-SEE DETAIL RETAINING WALL TYP-SEE DETAIL 8'R 3 - ADA PARKING SIGN TYP-SEE DETAIL ADA PARKING SIGN BOLLARD/COMBO TYP-SEE DETAIL 10' TAPER TO FLAT CURB FLAT CURB TYP-SEE DETAIL 10' TAPER TO FLAT CURB 23.1'CONCRETE STOOP COORDINATE WITH ARCHITECTURAL AND STRUCTURAL PLANS 2 - ADA PARKING SIGNS TYP-SEE DETAIL TYPICAL ADA PARKING TYP-SEE DETAIL 10'2'10' BITUMINOUS PATH TYP-SEE DETAIL 10' BITUMINOUS PATH TYP-SEE DETAIL CONNECT TO EXISTING BITUMINOUS PATH 9' TYP FLAT CURB TYP-SEE DETAIL B612 CURB & GUTTER AT LOADING DOCK RETAINING WALLS TYP-SEE DETAIL RETAINING WALL TYP-SEE DETAIL MATCH EXISTING BITUMINOUS PAVEMENT MATCH EXISTING BITUMINOUS PATH MATCH EXISTING BITUMINOUS PATH 10' TAPER TO FLAT CURB FLAT CURB TYP-SEE DETAIL 10' TAPER TO FLAT CURB 10' TAPER TO FLAT CURB 3' TAPER TO FLAT CURB 3' TAPER TO FLAT CURB FLAT CURB TYP-SEE DETAIL 3' TAPER TO FLAT CURB 3' TAPER TO FLAT CURB FLAT CURB TYP-SEE DETAIL 3' TAPER TO FLAT CURB 3' TAPER TO FLAT CURB 3' TAPER TO FLAT CURB 26.7'CONCRETE APRON TYP-SEE DETAIL CONCRETE APRON TYP-SEE DETAIL 40' AVERAGE BUFFER AREA 20' MINIMUM BUFFER AREA 5-WETLAND BUFFER LOCATION SIGNS TYP-SEE DETAIL 20.0'BOLLARD TYP-SEE DETAIL BOLLARD TYP-SEE DETAIL BOLLARD TYP-SEE DETAIL BOLLARD TYP-SEE DETAIL 87.8'35.8'35.7'06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 SITE NOTES 1.ALL PAVING, CONCRETE CURB, GUTTER AND SIDEWALK SHALL BE FURNISHED AND INSTALLED IN ACCORDANCE WITH THE DETAILS SHOWN PER THE DETAIL SHEET(S) AND STATE/LOCAL JURISDICTION REQUIREMENTS. 2.ACCESSIBLE PARKING AND ACCESSIBLE ROUTES SHALL BE PROVIDED PER CURRENT ADA STANDARDS AND LOCAL/STATE REQUIREMENTS. 3.ALL CURB DIMENSIONS SHOWN ARE TO THE FACE OF CURB UNLESS OTHERWISE NOTED. 4.ALL BUILDING DIMENSIONS ARE TO THE OUTSIDE FACE OF WALL UNLESS OTHERWISE NOTED. 5.TYPICAL FULL SIZED PARKING STALL IS 9' X 18' UNLESS OTHERWISE NOTED. 6.ALL CURB RADII SHALL BE 5.0' UNLESS OTHERWISE NOTED. 7.BITUMINOUS IMPREGNATED FIBER BOARD TO BE PLACED AT FULL DEPTH OF CONCRETE ADJACENT TO EXISTING STRUCTURES AND BEHIND CURB ADJACENT TO DRIVEWAYS AND SIDEWALKS. 8.SEE SITE ELECTRICAL PLAN FOR SITE LIGHTING. CURRENT ZONING:PUD PROPOSED ZONING:PUD PROPERTY AREA:227,850 SF / 5.23 AC EXISTING IMPERVIOUS AREA: 305 SF / 0.007 AC PROPOSED IMPERVIOUS AREA:133,599 SF / 3.07 AC SITE DATA YARD (BUILDING) SETBACKS: FRONT 30 FT MINIMUM SIDE 10 FT MINIMUM REAR 30 FT MINIMUM PARKING SETBACKS: FRONT 30 FT MINIMUM SIDE 10 FT MINIMUM REAR 30 FT MINIMUM OFF-STREET PARKING AND DESIGN STANDARD REQUIREMENTS MINIMUM PARKING LAYOUT DIMENSIONS (90 DEGREE PATTERN): PARKING SPACE WIDTH = 9 FT PARKING SPACE LENGTH = 18 FT DRIVE AISLE WIDTH = 26 FT DEVELOPMENT AND DESIGN STANDARDS SIGNAGE AND STRIPING NOTES 1.CONTRACTOR SHALL BE RESPONSIBLE FOR ALL SITE SIGNAGE AND STRIPING AS SHOWN ON THIS PLAN. 2.CONTRACTOR SHALL PAINT ALL ACCESSIBLE STALLS, LOGOS AND CROSS HATCH LOADING AISLES WITH WHITE PAVEMENT MARKING PAINT, 4" IN WIDTH. 3.CONTRACTOR SHALL PAINT ANY/ALL DIRECTIONAL TRAFFIC ARROWS, AS SHOWN, IN WHITE PAINT. 4.ALL SIGNAGE SHALL INCLUDE POST, CONCRETE FOOTING AND STEEL CASING WHERE REQUIRED. 5.ALL SIGNAGE NOT PROTECTED BY CURB, LOCATED IN PARKING LOT OR OTHER PAVED AREAS TO BE PLACED IN STEEL CASING, FILLED WITH CONCRETE AND PAINTED YELLOW. REFER TO DETAIL. 6.ANY/ALL STOP SIGNS TO INCLUDE A 24" WIDE PAINTED STOP BAR IN WHITE PAINT, PLACED AT THE STOP SIGN LOCATION, A MINIMUM OF 4' FROM CROSSWALK IF APPLICABLE. ALL STOP BARS SHALL EXTEND FROM DIRECTIONAL TRANSITION BETWEEN LANES TO CURB. 7.ALL SIGNS TO BE PLACED 18" BEHIND BACK OF CURB UNLESS OTHERWISE NOTED. PAVEMENT TYPES NOTE: SEE PAVEMENT SECTIONS ON SHEET C8-2 FOR TYPE AND DEPTH INFORMATION. LIGHT DUTY BITUMINOUS PAVEMENT CONCRETE SIDEWALK HEAVY DUTY BITUMINOUS PAVEMENT CONCRETE PAVEMENT TOTAL PARKING REQUIRED = 100 STALLS TOTAL PARKING PROVIDED = 106 STALLS (INCLUDES ADA STALLS) OFF-STREET PARKING CALCULATIONS ACCESSIBLE PARKING STALLS REQUIRED = 4 STALLS PROPOSED ACCESSIBLE STALLS PROVIDED = 6 STALLS ACCESSIBLE PARKING 73 23 CIVIL LEGEND C2.1 40' WETLAND BUFFER AREA = 5,939 SF 40' AVERAGE WETLAND BUFFER AREA = 5,979 SF WETLAND BUFFER DATA NOPARKINGNOPARKINGNOPARKING8 8 8 8 8 8 8888884444488869.00 GW=967.63 TW=967.63 GW=967.29 TW=970.12 GW=965.68 TW=969.50 GW=964.12 TW=969.81 GW=960.29 TW=969.08 GW=956.46 TW=970.16 GW=951.87 TW=968.45 GW=950.97 TW=968.00 GW=950.51 TW=968.38 GW=952.80 TW=969.14 GW=953.50 TW=969.16 GW=958.24 TW=968.64 GW=967.51 TW=970.91 GW=969.72 TW=969.72 69.33 68.43 67.69 68.84 68.54 68.74 69.00 69.00 69.44 70.18 69.82 69.85 69.85 69.69 70.05 70.45 69.97 70.21 70.09 69.97 70.13 71.48 71.39 71.75 72.07 71.37 71.71 73.36 71.82 74.17 74.77 75.1875.85 75.90 74.62 74.74 74.2774.08 75.03 74.88 73.43 73.93 71.74 71.74 71.16 71.38 70.73 70.73 71.13 71.13 71.13 69.58 69.95 70.61 70.20 68.34 69.09 68.34 68.80 68.1569.8668.7469.5169.20 68.52 68.71 67.12 52.62 51.00 50.31 53.30 52.64 49.39 49.59 52.84 46.40 46.60 57.02 57.22 53.19 53.39 58.80 58.79 59.80 60.58 61.01 61.21 71.10 70.7570.6870.6071.10 69.98 70.62 71.10 70.83 70.61 69.25 68.90 71.10 71.22 71.40 71.31 71.31 71.40 71.22 71.22 71.40 71.17 70.95 71.12 70.72 71.30 70.75 69.81 70.74 70.24 70.30 70.74 70.31 70.38 70.5770.67 70.76 70.82 70.51 70.13 70.82 70.50 71.04 72.30 71.48 70.70 70.3970.80 71.06 71.13 71.37 71.4071.27 71.31 71.35 71.30 71.37 71.40 71.40 70.45 70.73 70.7970.73 71.00 71.35 71.40 71.40 71.35 71.10 70.77 70.99 71.40 71.23 69.49 70.15 67.40 67.2067.58 67.40 67.16 68.58 70.50 71.40 71.40 67.40 67.20 GW=967.40 TW=971.40 GW=967.20 TW=971.25 69.90 70.50 70.50 GW=967.40 TW=969.30 GW=967.20 TW=969.60 TW=969.90GW=967.50 GW=967.40 TW=969.39 GW=967.17TW=969.90 GW=967.74 TW=970.50 4. 1 %2.1%2.4%2.0%2.0%2.0%2.0%2.4%2.0%2.0%1.0%1.0%1.5%1.9% 69.61 69.332.0%1.9% 2.0%1.0%1.0%1. 0 % 68.86 2.0% 3.0%3.0%1.2%2.0%70.98 1.3%2.5%2.0%3.3%3.0%3. 0 % 6. 0 % 6. 0 % 6. 0 % 3.1% 1.0%1.0%1.1% 1.1% 2.0%2.0%2.5%1.5%1.5%1.5%1.5%2.9%3.1%2.1%71.74 1.0%1.3%2.0%4.3%5.0%2.0% 2.0%5.0% 4.0% 3.0% 2.0 % 2.0% 2.0% 1.5%1.0%3.0%4.0%4.3%0.3%2.0% 2.0%1.8%1.0%1.2%1.0%5. 0 % 5. 0 % 2. 0 %974971 9 7 2973 971968969970968969970971 968969970971971 970975 974 973 972 971 972 973 9 7 0 96 9969970971969 971 970 9 7 2 972 971971971971 972 973974969 970 971971 97 0 970971 9699 7 0 970 969 96896796596694 5 950 955 960 94 6947948949951952953954956957958959961962963964 96 9 969953 952 951950949948947947 948 949 950 951 952 953 954 955 956957958959 96096171.26 953951951 95227.5%26.3% 31.3%22.9%06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 73 23 CIVIL LEGEND GRADING, DRAINAGE & EROSION CONTROL NOTES 1.SPOT ELEVATIONS REPRESENT FINISHED SURFACE GRADES, GUTTER/FLOW LINE, FACE OF BUILDING, OR EDGE OF PAVEMENT UNLESS OTHERWISE NOTED. 2.CATCH BASINS AND MANHOLES IN PAVED AREAS SHALL BE SUMPED 0.04 FEET. ALL CATCH BASINS IN GUTTERS SHALL BE SUMPED 0.16 FEET. RIM ELEVATIONS SHOWN ON PLANS DO NOT REFLECT SUMPED ELEVATIONS. 3.ALL DISTURBED UNPAVED AREAS ARE TO RECEIVE MINIMUM OF 4 INCHES OF TOP SOIL AND SEED/MULCH OR SOD. THESE AREAS SHALL BE WATERED/MAINTAINED BY THE CONTRACTOR UNTIL VEGETATION IS ESTABLISHED. 4.FOR SITE RETAINING WALLS "TW" EQUALS SURFACE GRADE AT TOP FACE OF WALL (NOT TOP OF WALL), "GW" EQUALS SURFACE GRADE AT WALL GRADE TRANSITION, AND "BW" EQUALS SURFACE GRADE AT BOTTOM FACE OF WALL (NOT BOTTOM OF BURIED WALL COURSES). 5.REFER TO THE REPORT OF GEOTECHNICAL EXPLORATION AND REVIEW (REPORT NO. B1801313), DATED MARCH 13, 2018 AS PREPARED BY BRAUN INTERTEC FOR AN EXISTING SUBSURFACE SITE CONDITION ANALYSIS AND CONSTRUCTION RECOMMENDATIONS. 6.STREETS MUST BE CLEANED AND SWEPT WHENEVER TRACKING OF SEDIMENTS OCCURS AND BEFORE SITES ARE LEFT IDLE FOR WEEKENDS AND HOLIDAYS. A REGULAR SWEEPING SCHEDULE MUST BE ESTABLISHED. 7.DUST MUST BE ADEQUATELY CONTROLLED. 8.SEE SWPPP FOR ADDITIONAL EROSION CONTROL NOTES AND REQUIREMENTS. 9.SEE UTILITY PLAN FOR WATER, STORM AND SANITARY SEWER INFORMATION. 10.SEE SITE PLAN FOR CURB AND BITUMINOUS TAPER LOCATIONS. C3.1 NOPARKINGNOPARKINGNOPARKING8 8 8 8 8 8 88888844444888974971 9 7 2973 971968969970968969970971 968969970971971 970975 974 973 972 971 972 973 9 7 0 96 9969970971969 971 970 9 7 2972 971971971971 972 973974969 970 971971 97 0 970971 9699 7 0 970 969 96896796596694 5 950 955 960 94 6947948949951952953954956957958959961962963964 96 9 969953 952 951950949948947947 948 949 950 951 952 953 954 955 956957958959 960961953951951 952 INLET PROTECTION TYP-SEE DETAIL ROCK CONSTRUCTION ENTRANCE SEE DETAIL SILT FENCE TYP-SEE DETAIL EROSION CONTROL BLANKET TYP-SEE DETAIL SILT FENCE TYP-SEE DETAIL EROSION CONTROL BLANKET TYP-SEE DETAIL 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 73 23 CIVIL LEGEND C3.2 SWPPP LEGEND INLET PROTECTION SILT FENCE EXISTING DRAINAGE PATTERN PROPOSED DRAINAGE PATTERN BIO ROLLS EROSION CONTROL BLANKET ROCK CONSTRUCTION ENTRANCE 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLY1.THE NATURE OF THIS PROJECT WILL CONSIST OF CONSTRUCTING A BUILDING, SURFACE PAVEMENTS, RETAINING WALL, UNDERGROUND DETENTION SYSTEM, AND UTILITIES. 2.THE INTENDED SEQUENCING OF MAJOR CONSTRUCTION ACTIVITIES ARE AS FOLLOWS: 1.INSTALL VEHICLE TRACKING BMP 2.INSTALL INLET PROTECTION 3.INSTALL SILT FENCE AROUND SITE 4.CLEAR AND GRUB SITE 5.STRIP AND STOCKPILE TOPSOIL 6.REMOVE PAVEMENTS AND UTILITIES 7.ROUGH GRADE SITE 8.IMPORT CLEAN FILL FOR REPLACEMENT AND BALANCE 9.INSTALL UTILITIES 10.INSTALL BUILDING FOUNDATIONS 11.INSTALL CURB AND GUTTER 12.INSTALL PAVEMENTS AND WALKS 13.FINAL GRADE SITE 14.REMOVE ACCUMULATED SEDIMENT FROM STORMWATER SYSTEMS 15.SEED AND MULCH 16.WHEN ALL CONSTRUCTION ACTIVITY IS COMPLETE AND THE SITE IS STABILIZED, REMOVE SILT FENCE, INLET PROTECTION, AND RESEED ANY AREAS DISTURBED BY THE REMOVAL. 3.SITE DATA: AREA OF DISTURBANCE:3.955 AC PRE-CONSTRUCTION IMPERVIOUS AREA:0.007 AC POST-CONSTRUCTION IMPERVIOUS AREA:3.067 AC GENERAL SOIL TYPE:SEE GEOTECHNICAL EVALUATION REPORT 4.THE LOCATION OF AREAS NOT TO BE DISTURBED MUST BE IDENTIFIED WITH FLAGS, STAKES, SIGNS, SILT FENCE, ETC. BEFORE CONSTRUCTION BEGINS. 5.ALL DISTURBED GROUND LEFT INACTIVE FOR SEVEN (7) OR MORE DAYS SHALL BE STABILIZED BY SEEDING OR SODDING (ONLY AVAILABLE PRIOR TO SEPTEMBER 15) OR BY MULCHING OR COVERING OR OTHER EQUIVALENT CONTROL MEASURE. 6.ON SLOPES 3:1 OR GREATER MAINTAIN SHEET FLOW AND MINIMIZE RILLS AND/OR GULLIES, SLOPE LENGTHS CAN NOT BE GREATER THAN 75 FEET. DENOTES SLOPES GREATER THAN 3:1. ALL 3:1 SLOPES TO BE STABILIZED WITH EROSION CONTROL BLANKET 7.ALL STORM DRAINS AND INLETS MUST BE PROTECTED UNTIL ALL SOURCES OF POTENTIAL DISCHARGE ARE STABILIZED. 8.TEMPORARY SOIL STOCKPILES MUST HAVE EFFECTIVE SEDIMENT CONTROL AND CAN NOT BE PLACED IN SURFACE WATERS OR STORM WATER CONVEYANCE SYSTEMS. TEMPORARY STOCKPILES WITHOUT SIGNIFICANT AMOUNT OF SILT, CLAY, OR ORGANIC COMPOUNDS ARE EXEPMT EX: CLEAN AGGREGATE STOCK PILES, DEMOLITION CONCRETE STOCKPILES, SAND STOCKPILES. 9.SEDIMENT LADEN WATER MUST BE DISCHARGED TO A SEDIMENTATION BASIN WHENEVER POSSIBLE. IF NOT POSSIBLE, IT MUST BE TREATED WITH THE APPROPRIATE BMP'S. 10.SOLID WASTE MUST BE DISPOSED OF PROPERLY AND MUST COMPLY WITH MPCA DISPOSAL REQUIREMENTS. 11.EXTERNAL WASHING OF CONSTRUCTION VEHICLES MUST BE LIMITED TO A DEFINED AREA OF THE SITE. RUNOFF MUST BE PROPERLY CONTAINED. 12.NO ENGINE DEGREASING IS ALLOWED ON SITE. 13.THE OWNER WHO SIGNS THE NPDES PERMIT APPLICATION IS A PERMITTEE AND IS RESPONSIBLE FOR COMPLIANCE WITH ALL TERMS AND CONDITIONS OF THE PERMIT. THE OPERATOR (CONTRACTOR) WHO SIGNS THE NPDES PERMIT APPLICATION IS A PERMITTEE FOR PARTS II.B., PART II.C, PART II.B-F, PART V, PART IV AND APPLICABLE CONSTRUCTION ACTIVITY REQUIREMENTS FOUND IN APPENDIX A, PART C. OF THE NPDES PERMIT AND IS JOINTLY RESPONSIBLE WITH THE OWNER FOR COMPLIANCE WITH THOSE PORTIONS OF THE PERMIT. 14.TERMINATION OF COVERAGE-PERMITTEE(S) WISHING TO TERMINATE COVERAGE MUST SUBMIT A NOTICE OF TERMINATION (NOT) TO THE MPCA. ALL PERMITTEE(S) MUST SUBMIT A NOT WITHIN 30 DAYS AFTER ONE OR MORE OF THE FOLLOWING CONDITIONS HAVE BEEN MET: A.FINAL STABILIZATION, PER NPDES PERMIT PART IV.G. HAS BEEN ACHIEVED ON ALL PORTIONS OF THE SITE FOR WHICH THE PERMITTEE IS RESPONSIBLE. B.TRANSFER OF OWNERSHIP AS DESCRIBED IN THE PERMIT. 15. INSPECTIONS A.INITIAL INSPECTION FOLLOWING SILT FENCE INSTALLATION BY CITY REPRESENTATIVE IS REQUIRED. B.EXPOSED SOIL AREAS: ONCE EVERY 7 DAYS AND WITHIN 24 HOURS FOLLOWING A 0.5" OVER 24 HOUR RAIN EVENT. C.STABILIZED AREAS: ONCE EVERY 30 DAYS D.FROZEN GROUND: AS SOON AS RUNOFF OCCURS OR PRIOR TO RESUMING CONSTRUCTION. E.INSPECTION AND MAINTENANCE RECORDS MUST BE RETAINED FOR 3 YEARS AFTER FILING OF THE NOTICE OF TERMINATION AND MUST INCLUDE: DATE AND TIME OF ACTION, NAME OF PERSON(S) CONDUCTING WORK, FINDING OF INSPECTIONS AND RECOMMENDATIONS FOR CORRECTIVE ACTION, DATE AND AMOUNT OF RAINFALL EVENTS GREATER THAN 0.5 INCHES IN A 24 HOUR PERIOD. 16. MINIMUM MAINTENANCE A.SILT FENCE TO BE REPAIRED, REPLACED, SUPPLEMENTED WHEN NONFUNCTIONAL, OR 1/3 FULL; WITHIN 24 HOURS B.SEDIMENT BASINS DRAINED AND SEDIMENT REMOVED WHEN REACHES 1/2 STORAGE VOLUME. REMOVAL MUST BE COMPLETE WITHIN 72 HOURS OF DISCOVERY. C.SEDIMENT REMOVED FROM SURFACE WATERS WITHIN (7)SEVEN DAYS D.CONSTRUCTION SITE EXITS INSPECTED, TRACKED SEDIMENT REMOVED WITH 24 HOURS. E.PROVIDE COPIES OF EROSION INSPECTION RESULTS TO CITY ENGINEER FOR ALL EVENTS GREATER THAN 12" IN 24 HOURS 17.THE SWPPP, INCLUDING ALL CHANGES TO IT, AND INSPECTIONS AND MAINTENANCE RECORDS MUST BE KEPT AT THE SITE DURING CONSTRUCTION ACTIVITY BY THE PERMITTEE(S) WHO HAVE OPERATIONAL CONTROL OF THE SITE. 18.OWNER MUST KEEP RECORDS OF ALL PERMITS REQUIRED FOR THE PROJECT, THE SWPPP, ALL INSPECTIONS AND MAINTENANCE, PERMANENT OPERATION AND MAINTENANCE AGREEMENTS, AND REQUIRED CALCULATIONS FOR TEMPORARY AND PERMANENT STORM WATER MANAGEMENT SYSTEMS. THESE RECORDS MUST BE RETAINED FOR THREE YEARS AFTER FILING NPDES NOTICE OF TERMINATION. 19.SWPPP MUST BE AMENDED WHEN: A.THERE IS A CHANGE IN DESIGN, OPERATION, MAINTENANCE, WEATHER OR SEASONAL CONDITIONS THAT HAS A SIGNIFICANT EFFECT ON DISCHARGE B.INSPECTIONS INDICATE THAT THE SWPPP IS NOT EFFECTIVE AND DISCHARGE IS EXCEEDING WATER QUALITY STANDARDS. C.THE BMP'S IN THE SWPPP ARE NOT CONTROLLING POLLUTANTS IN DISCHARGES OR IS NOT CONSISTENT WITH THE TERMS AND CONDITIONS OF THE PERMIT. 19.CONCRETE WASHOUT AREA A.CONTRACTOR TO PROVIDE PREFABRICATED CONCRETE WASH-OUT CONTAINER WITH RAIN PROTECTION PER PLAN. B.CONCRETE WASH-OUT TO BE IDENTIFIED WITH SIGNAGE STATING "CONCRETE WASHOUT AREA DO NOT OVERFILL". C.CONCRETE WASHOUT WATER NEEDS TO BE PUMPED WITHIN 24 HOURS OF STANDING WATER IN WASHOUT AREA. 20.IN THE EVENT OF ENCOUNTERING A WELL OR SPRING DURING CONSTRUCTION CONTRACTOR TO CEASE CONSTRUCTION ACTIVITY AND NOTIFY ENGINEER. 21.PIPE OULTETS MUST BE PROVIDED WITH TEMPORARY OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS AFTER CONNECTION TO A SURFACE WATER. 22.FINAL STABILIZATION FINAL STABILIZATION REQUIRES THAT ALL SOIL DISTURBING ACVTIVITIES HAVE BEEN COMPLETED AND THAT DISTURBED AREAS ARE STABILIZED BY A UNIFORM PERENNIAL VEGETATIVE COVER WITH 70% OF THE EXPECTED FINAL DENSITY, AND THAT ALL PERMANENT PAVEMENTS HAVE BEEN INSTALLED. ALL TEMPORARY BMP'S SHALL BE REMOVED, DITCHES STABILIZED, AND SEDIMENT SHALL BE REMOVED FROM PERMANENT CONVEYANCES AND SEDIMENTATION BASINS IN ORDER TO RETURN THE POND TO DESIGN CAPACITY. 23.RESPONSIBILITIES A.THE OWNER MUST IDENTIFY A PERSON WHO WILL OVERSEE THE SWPPP IMPLEMENTATION AND THE PERSON RESPONSIBLE FOR INSPECTION AND MAINTENANCE: CONTACT: __________________________________ COMPANY: __________________________________ PHONE: __________________________________ B.THE OWNER MUST IDENTIFY THE A PERSON WHO WILL BE RESPONSIBLE FOR LONG TERM OPERATIONS AND MAINTENANCE OF THE PERMANENT STORMWATER MANAGEMENT SYSTEM: CONTACT:__________________________________ COMPANY: __________________________________ PHONE: __________________________________ 24.THE WATERSHED DISTRICT OR THE CITY MAY HAVE REQUIREMENTS FOR INSPECTIONS OR AS-BUILT DRAWINGS VERIFYING PROPER CONSTRUCTION OF THE BMPS. SWPPP NOTES ESTIMATED QUANTITIES DESCRIPTION UNIT TEMPORARY ROCK CONSTRUCTION ENTRANCE EA PREFABRICATED CONCRETE WASHOUT EA SILT FENCE (STANDARD)LF EROSION CONTROL BLANKET SY INLET PROTECTION EA QUANTITY 1 1 1,010 1,760 15 BIO-ROLL LF NA SITE VICINITY MAP CONSTRUCTION STORMWATER SPECIAL WATERS SEARCH MAP C3.3 PROJECT SITE * EROSION CONTROL BLANKET 6" 6" 1' TO 3'ANCHOR TRENCH 1.DIG 6"X6" TRENCH 2.LAY BLANKETS IN TRENCH 3.STAPLE AT 1.5' INTERVALS 4.BACKFILL WITH NATURAL SOIL AND COMPACT. 5.BLANKET LENGTH SHALL NOT EXCEED 100' WITHOUT AN ANCHOR TRENCH NOTE: SLOPE SURFACE SHALL BE FREE OF ROCKS, SOIL CLUMPS, STICKS, VEHICLE IMPRINTS, AND GRASS. BLANKETS SHALL HAVE GOOD SOIL CONTACT. ANCHOR TRENCH (SEE DETAIL AND NOTES BELOW) OVERLAP END JOINTS MINIMUM OF 6" AND STAPLE OVERLAP AT 1.5' INTERVALS. OVERLAP LONGITUDINAL JOINTS MINIMUM OF 6" STAPLE PATTERN/DENSITY SHALL FOLLOW MANUFACTURERS SPECIFICATIONS. DI R E C T I O N O F SU R F A C E F L O W STAGGER JOINTS DRAWN 2/2016 LOUCKS PLATE NO. 3016LOUCKS NOPARKINGNOPARKINGNOPARKING8 8 8 8 8 8 88888844444888SANITARY SEWER SERVICE STUB INV=962.09 (VERIFY LOCATION, INVERT & SIZE W/ MECHANICAL) SANMH 1 BUILD OVER EXISTING 8" SANITARY SEWER LINE INV=958.15± (VERIFY RIM, INVERT, & SIZE) 163 LF-6" PVC @ 2.00% 29 LF-6" PVC @ 2.00% SANMH 2 RIM=971.27 INV(N)=961.51 INV(W)=961.41 73.3 WET TAP EXISTING 12" DIP WATERMAIN (VERIFY TYPE & SIZE) 8" GATE VALVE 8"x8" TEE W/ 6" REDUCER TO HYDRANT 8" GATE VALVE DUAL 8" COMBINED DOMESTIC/FIRE WATER SERVICES (VERIFY LOCATION, INVERT & SIZE W/ MECHANICAL) 184 LF-8" DIP WATERMAIN 128 LF-6" DIP WATERMAIN 40 LF-8" DIP WATERMAIN HYDRANT W/ GATE VALVE 14 LF-6" DIP WATERMAIN 90 DEG. 6"X6" BEND 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 73 23 CIVIL LEGEND C4.1 UTILITY NOTES 1. ALL SANITARY SEWER, STORM SEWER AND WATERMAIN UTILITIES SHALL BE FURNISHED AND INSTALLED PER THE REQUIREMENTS OF THE SPECIFICATIONS,THE MINNESOTA PLUMBING CODE, THE LOCAL GOVERNING UNIT , AND THE STANDARD UTILITIES SPECIFICATION OF THE CITY ENGINEERS ASSOCIATION OF MINNESOTA (CEAM), 2013 EDITION. 2.ALL UTILITY PIPE BEDDING SHALL BE COMPACTED SAND OR FINE GRANULAR MATERIAL. ALL COMPACTION SHALL BE PERFORMED PER THE REQUIREMENTS OF THE CEAM SPECIFICATION AND THE GEOTECHNICAL REPORT. 3.ALL CONNECTIONS TO EXISTING UTILITIES SHALL BE PERFORMED PER THE REQUIREMENTS OF THE STATE AND LOCAL JURISDICTIONS. THE CITY DEPARTMENT OF ENGINEERING AND BUILDING INSPECTIONS DEPARTMENT AND THE CONSTRUCTION ENGINEER MUST BE NOTIFIED AT LEAST 48 HOURS PRIOR TO ANY WORK WITHIN THE PUBLIC RIGHT OF WAY, OR WORK IMPACTING PUBLIC UTILITIES. 4.ALL STORM SEWER , SANITARY SEWER AND WATER SERVICES SHALL TERMINATE 5' FROM THE BUILDING FACE UNLESS OTHERWISE NOTED. 5.A MINIMUM OF 18 INCHES OF VERTICAL SEPARATION AND 10 FEET OF HORIZONTAL SEPARATION IS REQUIRED BETWEEN WATERMAIN AND ALL UTILITIES UNLESS OTHERWISE NOTED. 6.ALL NEW WATERMAIN AND SERVICES MUST HAVE A MINIMUM OF 8.0 FEET OF COVER. EXTRA DEPTH MAY BE REQUIRED TO MAINTAIN A MINIMUM 18" VERTICAL SEPARATION TO SANITARY OR STORM SEWER LINES. THE CONTRACTOR SHALL FIELD ADJUST WATERMAIN TO AVOID CONFLICTS WITH SANITARY SEWER, STORM SEWER, AND SERVICES AS REQUIRED. INSULATION OF WATER AND SANITARY SEWER LINES SHALL BE PROVIDED WHERE 8.0 FEET MINIMUM DEPTH CAN NOT BE ATTAINED. 7.ALL FIRE HYDRANTS SHALL BE LOCATED 5 FEET BEHIND BACK OF CURB OR EDGE OF PAVEMENT UNLESS OTHERWISE NOTED. 8.PROPOSED PIPE MATERIALS: WATERMAIN DIP 6" TO 8" DIAMETER SANITARY SEWER PVC SDR 26 6" DIAMETER STORM SEWER DUAL WALL HDPE 12" TO 18" DIAMETER PERFORATED PVC 4" DIAMETER 9.ALL SANITARY SEWER WYES, TEES AND SERVICES SHALL BE 6" PVC SDR 26. 10.CONTRACTOR TO SUBMIT SHOP DRAWINGS OF UNDERGROUND DETENTION SYSTEM FOR ENGINEER'S REVIEW. 11.ALL PORTIONS OF THE STORM SEWER SYSTEM, INCLUDING CATCH BASINS, LOCATED WITHIN 10 FEET OF THE BUILDING OR WATER SERVICE LINE MUST BE TESTED ACCORDANCE WITH MINNESOTA RULES, PART 4715.2820 12.ALL JOINTS AND CONNECTIONS IN THE STORM SEWER SYSTEM SHALL BE GASTIGHT OR WATERTIGHT (SEE MINNESOTA RULES, PART 4715.0700). APPROVED RESILIENT RUBBER JOINTS MUST BE USED TO MAKE WATERTIGHT CONNECTIONS TO MANHOLES, CATCHBASINS, AND OTHER STRUCTURES. 13.HIGH-DENSITY POLYETHYLENE (HDPE) STORM DRAINS MUST COMPLY WITH MINNESOTA RULES, PART 4715.0540: a.PIPES 4-INCH TO 10-INCH IN SIZE MUST COMPLY WITH AASHTO M252. b.PIPES 12-INCH TO 60-INCH IN SIZE MUST COMPLY WITH ASTM F2306. c.ALL FITTINGS MUST COMPLY WITH ASTM D3212. d.WATER-TIGHT JOINTS MUST BE USED AT ALL CONNECTIONS INCLUDING STRUCTURES. NOPARKINGNOPARKINGNOPARKING8 8 8 8 8 8 8888884444488873.3 CBMH 10 RIM=969.20 INV=966.20 SUMP=963.20 CBMH 20 RIM=968.74 INV=965.74 SUMP=962.74 CBMH 30 RIM=968.15 INV=965.15 SUMP=962.15 CBMH 40 RIM=968.34 INV=965.34 SUMP=962.34 CBMH 50 RIM=969.58 INV=965.88 SUMP=962.88 STMH 60 RIM=971.02 INV=964.93 SUMP=961.93 CBMH 70 RIM=970.15 INV=965.03 SUMP=962.03 CBMH 80 RIM=969.49 INV=965.14 SUMP=962.14 CBMH 93 RIM=971.00 INV=968.00 CBMH 92 RIM=970.45 INV(E)=967.34 INV(N)=967.34 INV(W)=967.34 CBMH 91 RIM=970.39 INV(E)=966.02 INV(NW)=966.02 CBMH 90 RIM=970.50 INV=965.68 SUMP=962.68 CBMH 100 RIM=970.13 INV=966.63 SUMP=963.63 CBMH 110 RIM=969.00 INV=966.00 SUMP=963.00 32 LF-12" HDPE @ 1.78% 32 LF-12" HDPE @ 0.50%32 LF-12" HDPE @ 0.50% INLET INV=965.63 INLET INV=965.58 INLET INV=964.99 12" ROOF DRAIN STUB INV=967.46 (VERIFY SIZE, INVERT & LOCATION W/ MECHANICAL) DET1 72" CSP UNDERGROUND DETENTION SYSTEM (1100 LF TOTAL) TOP OF PIPE=966.63 OUTLET=960.63 INV=960.63 INLET INV=965.27 14 LF-12" HDPE @ 0.50% INLET INV=965.63 5 LF-12" HDPE @ 5.00% 33 LF-12" HDPE @ 2.00% 66 LF-12" HDPE @ 2.00% 17 LF-12" HDPE @ 2.00% 5 LF-12" HDPE @ 1.00% INLET INV=965.63 6 LF-12" HDPE @ 2.00% 5 LF-12" HDPE @ 20.00% INLET INV=965.63 INLET INV=965.63 29 LF-12" HDPE @ 1.28% 92 LF-12" HDPE @ 0.50% TRENCH DRAIN 61 NEENAH R-4999-CX BOLTED RIM=967.16 INV=966.49 OUT=965.39 30 LF-12" HDPE @ 0.50% INLET INV=964.78 TRENCH DRAIN 71 NEENAH R-4999-CX BOLTED RIM=967.20 INV=966.53 OUT=965.43 79 LF-12" HDPE @ 0.50% 27 LF-12" HDPE @ 0.50% INLET INV=964.90 57 LF-12" HDPE @ 0.50% TRENCH DRAIN 81 NEENAH R-4999-CX BOLTED RIM=967.20 INV=966.53 OUT=965.43 23 LF-12" HDPE @ 0.50% INLET INV=965.03 OUTLET INV=960.63 11 LF-12" HDPE @ 0.50% OCS MH 2 RIM=969.98 WEIR=965.86 12"X12" ORIFICE=963.03 6"X6" ORIFICE=960.57 INV=960.57 CONNECT TO EXISTING CATCH BASIN MANHOLE AT INV=959.59 (VERIFY INVERT) 79 LF-18" HDPE @ 1.00% CONTECH JELLYFISH JFPD0806 ONLINE FILTER SYSTEM RIM=970.16 TOP OF STRUCTURE=964.44 INV(E)=960.52 INV(W)=960.44 BOTTOM OF STRUCTURE=955.11 SEE DETAIL STMH 1 RIM=970.27 INV=960.39 5 LF-18" HDPE @ 1.00% 5 LF-12" HDPE @ 1.00% 25 LF-4" PVC DRAINTILE SLOPE TO DRAIN TYP-SEE DETAIL 25 LF-4" PVC DRAINTILE SLOPE TO DRAIN TYP-SEE DETAIL 36" ACCESS RISER RIM=VARIES INV=960.63 36" ACCESS RISER RIM=VARIES INV=960.63 36" ACCESS RISER RIM=VARIES INV=960.63 36" ACCESS RISER RIM=VARIES INV=960.63 36" ACCESS RISER RIM=VARIES INV=960.63 25 LF-4" PVC DRAINTILE SLOPE TO DRAIN TYP-SEE DETAIL 25 LF-4" PVC DRAINTILE SLOPE TO DRAIN TYP-SEE DETAIL 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 73 23 CIVIL LEGEND C4.2 UTILITY NOTES 1. ALL SANITARY SEWER, STORM SEWER AND WATERMAIN UTILITIES SHALL BE FURNISHED AND INSTALLED PER THE REQUIREMENTS OF THE SPECIFICATIONS,THE MINNESOTA PLUMBING CODE, THE LOCAL GOVERNING UNIT , AND THE STANDARD UTILITIES SPECIFICATION OF THE CITY ENGINEERS ASSOCIATION OF MINNESOTA (CEAM), 2013 EDITION. 2.ALL UTILITY PIPE BEDDING SHALL BE COMPACTED SAND OR FINE GRANULAR MATERIAL. ALL COMPACTION SHALL BE PERFORMED PER THE REQUIREMENTS OF THE CEAM SPECIFICATION AND THE GEOTECHNICAL REPORT. 3.ALL CONNECTIONS TO EXISTING UTILITIES SHALL BE PERFORMED PER THE REQUIREMENTS OF THE STATE AND LOCAL JURISDICTIONS. THE CITY DEPARTMENT OF ENGINEERING AND BUILDING INSPECTIONS DEPARTMENT AND THE CONSTRUCTION ENGINEER MUST BE NOTIFIED AT LEAST 48 HOURS PRIOR TO ANY WORK WITHIN THE PUBLIC RIGHT OF WAY, OR WORK IMPACTING PUBLIC UTILITIES. 4.ALL STORM SEWER , SANITARY SEWER AND WATER SERVICES SHALL TERMINATE 5' FROM THE BUILDING FACE UNLESS OTHERWISE NOTED. 5.A MINIMUM OF 18 INCHES OF VERTICAL SEPARATION AND 10 FEET OF HORIZONTAL SEPARATION IS REQUIRED BETWEEN WATERMAIN AND ALL UTILITIES UNLESS OTHERWISE NOTED. 6.ALL NEW WATERMAIN AND SERVICES MUST HAVE A MINIMUM OF 8.0 FEET OF COVER. EXTRA DEPTH MAY BE REQUIRED TO MAINTAIN A MINIMUM 18" VERTICAL SEPARATION TO SANITARY OR STORM SEWER LINES. THE CONTRACTOR SHALL FIELD ADJUST WATERMAIN TO AVOID CONFLICTS WITH SANITARY SEWER, STORM SEWER, AND SERVICES AS REQUIRED. INSULATION OF WATER AND SANITARY SEWER LINES SHALL BE PROVIDED WHERE 8.0 FEET MINIMUM DEPTH CAN NOT BE ATTAINED. 7.ALL FIRE HYDRANTS SHALL BE LOCATED 5 FEET BEHIND BACK OF CURB OR EDGE OF PAVEMENT UNLESS OTHERWISE NOTED. 8.PROPOSED PIPE MATERIALS: WATERMAIN DIP 6" TO 8" DIAMETER SANITARY SEWER PVC SDR 26 6" DIAMETER STORM SEWER DUAL WALL HDPE 12" TO 18" DIAMETER PERFORATED PVC 4" DIAMETER 9.ALL SANITARY SEWER WYES, TEES AND SERVICES SHALL BE 6" PVC SDR 26. 10.CONTRACTOR TO SUBMIT SHOP DRAWINGS OF UNDERGROUND DETENTION SYSTEM FOR ENGINEER'S REVIEW. 11.ALL PORTIONS OF THE STORM SEWER SYSTEM, INCLUDING CATCH BASINS, LOCATED WITHIN 10 FEET OF THE BUILDING OR WATER SERVICE LINE MUST BE TESTED ACCORDANCE WITH MINNESOTA RULES, PART 4715.2820 12.ALL JOINTS AND CONNECTIONS IN THE STORM SEWER SYSTEM SHALL BE GASTIGHT OR WATERTIGHT (SEE MINNESOTA RULES, PART 4715.0700). APPROVED RESILIENT RUBBER JOINTS MUST BE USED TO MAKE WATERTIGHT CONNECTIONS TO MANHOLES, CATCHBASINS, AND OTHER STRUCTURES. 13.HIGH-DENSITY POLYETHYLENE (HDPE) STORM DRAINS MUST COMPLY WITH MINNESOTA RULES, PART 4715.0540: a.PIPES 4-INCH TO 10-INCH IN SIZE MUST COMPLY WITH AASHTO M252. b.PIPES 12-INCH TO 60-INCH IN SIZE MUST COMPLY WITH ASTM F2306. c.ALL FITTINGS MUST COMPLY WITH ASTM D3212. d.WATER-TIGHT JOINTS MUST BE USED AT ALL CONNECTIONS INCLUDING STRUCTURES. 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYC8.1 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYC8.2 SLOPE GUTTER TO MATCH PARKING LOT DRAINAGE (3/4" PER FT. TYP.) TIP GUTTER OUT AS REQ'D PAVEMENT SECTION VARIES MIN. OF 4" 3/8 " LIP MINIMUM 1' BEHIND BACK OF CURBAGG. BASE UNDER CURB (IF TOTAL THICKNESS OF SECTION ALLOWS) 7" 12"8" AGG. BASE VARIES 1/2" RAD. 20" FLAT CURB AND GUTTER (12") SPECIFICATION NOTES: 1.UPON COMPLETION, CURBING SHOULD BE SPRAYED WITH A MEMBRANE CURING COMPOUND PER MNDOT 3754. 2.EXPANSION JOINTS AT MAX. SPACING OF 200'. 3.CONSTRUCT IN ACCORDANCE WITH MNDOT 2531. DRAWN 2/2016 LOUCKS PLATE NO. 2012LOUCKS 2" BIT. WEAR COURSE, MN/DOT 2360 SPWEA240B TACK COAT, MN/DOT 2357 2" BIT. NON-WEAR COURSE, MN/DOT 2360 SPNWB230B 6" AGG. BASE, CLASS 5 OR 2 MN/DOT 3138 APPROVED SUBGRADE FINISHED GRADE 24" SELECT GRANULAR, MN/DOT 3149.D STANDARD BITUMINOUS PAVEMENT SECTION GEOTEXTILE FILTER FABRIC TYPE V, MN/DOT 3733.2 DRAWN 12/2016 LOUCKS PLATE NO. 2031LOUCKS 2" BIT. WEAR COURSE, MN/DOT 2360 SPWEA240B TACK COAT, MN/DOT 2357 2.5" BIT. NON-WEAR COURSE, MN/DOT 2360 SPNWB230B 8" AGG. BASE, CLASS 5 OR 2 MN/DOT 3138 APPROVED SUBGRADE FINISHED GRADE 24" SELECT GRANULAR, MN/DOT 3149.D HEAVY DUTY BITUMINOUS PAVEMENT SECTION GEOTEXTILE FILTER FABRIC TYPE V, MN/DOT 3733.2 DRAWN 12/2016 LOUCKS PLATE NO. 2032LOUCKS 8" COMPACTED AGGREGATE BASE CL. 5 OR 2 MN/DOT 3138 APPROVED SUBGRADE FINISHED GRADE 6" CONCRETE MN/DOT 2301 CONCRETE PAVEMENT SECTION NOTES: 1.CONCRETE 6" THICK OR LESS SHALL BE REINFORCED WITH WELDED WIRE FABRIC OR REINFORCING BARS. CONCRETE 7" THICK OR GREATER SHALL BE REINFORCED PER GEOTECHNICAL RECOMMENDATIONS. 2.SAWED OR FORMED CONTROL JOINTS SHOULD BE INCLUDED FOR EACH 225 SQUARE FEET OF AREA OR LESS (15 FEET BY 15 FEET). 3.SAW CUTS SHOULD NOT CUT THROUGH THE WELDED WIRE FABRIC OR REINFORCING STEEL AND DOWELS SHOULD BE UTILIZED AT FORMED AND/OR COLD JOINTS. DRAWN 12/2016 LOUCKS PLATE NO. 2033LOUCKS 24" SELECT GRANULAR, MN/DOT 3149.D VAN ACCESSIBLE 60"48"18" DIA.36"TYPICAL ADA PARKING SIGN / BOLLARD COMBO 12"x18" STANDARD HANDICAP PARKING SIGN WITH SEPARATE 'VAN ACCESSIBLE' PANEL. GREEN LETTERING AND BORDER ON WHITE BACKGROUND. SYMBOL OF ACCESSIBILITY SHALL BE 4"x4" AND BE WHITE ON A BLUE BACKGROUND. USE HARDWARE PER SIGN SUPPLIER'S RECOMMENDATIONS. HC SIGNAGE PER MINNESOTA RULES 1341.0502 12"x6" STANDARD 'VAN ACCESSIBLE' PANEL. GREEN LETTERING AND BORDER ON WHITE BACKGROUND. 2" DIA. 6' LONG MIN. GALVANIZED SCHEDULE 40 STEEL PIPE. EMBED IN CONCRETE FILLED BOLLARD 6" DIA. SCHEDULE 40 GALVENZIED STEEL PIPE 6' LONG MINIMUM HEAVY DUTY HDPE DOME TOP DECORATIVE SLEEVE BLUE OR YELLOW IN COLOR. AVAILABLE FROM BOLLARDSNSLEEVES.COM OR EQUAL. COMPACTED OR UNDISTURBED SUBGRADE. NOTES: 1.BOLLARDS TO BE PLACED 12" BEHIND BACK OF CURB OR SIDEWALK (REFER TO SITE PLAN.) 2.MAINTAIN PLUMB UNTIL CONCRETE IS SUFFICIENTLY CURED. 3.HOLD CONCRETE FOOTING BELOW GRADE OF FINISHED CONCRETE TO CREATE FINAL PAVING PATTERN AS SHOWN ON PLANS. 4.SIGN CENTERED AT HEAD OF PARKING SPACE - MAXIMUM OF 96" FROM HEAD OF PARKING SPACE. DRAWN 03/2017 LOUCKS PLATE NO. 2038ALOUCKS6"18"6"VIOLATORS ARE SUBJECT TO A FINE OF UP TO $ 200.00 PARKING RESERVED TYPICAL ADA PARKING STALL STRIPING DRAWN 03/2017 LOUCKS PLATE NO. 2037LOUCKS LCC 4" WIDE PAINTED LINES, TRAFFIC WHITE 4" WIDE PAINTED LINES, 18" O.C., @ 45 DEG. TRAFFIC WHITE (AISLE TO CONTAIN THE DESIGNATION "NO PARKING" COMPLYING WITH MSBC 1341.0502 IF ACCESS AISLE SIGNS ARE NOT SHOWN REFER TO SITE PLAN FOR ADA PARKING SIGN LOCATION REFER TO SITE PLAN FOR ACCESS AISLE SIGN LOCATION (AISLE TO CONTAIN THE DESIGNATION "NO PARKING" COMPLYING WITH MSBC 134.0502 IF ACCESS AISLE SIGNS ARE NOT SHOWN) REFER TO SITE PLAN FOR STALL DIMENSIONS 40"PROVIDE PAINTED INTERNATIONAL SYMBOL OF ACCESSIBILITY AT EACH DESIGNATED HANDICAP PARKING STALL. CENTER SYMBOL IN STALL. HC SIGNAGE PER MINNESOTA RULES 1341.0502 ALL LINES 4" WIDE 8" DIAMETER NOT TO SCALE 67.5 5 36" TYPICAL ADA PARKING SIGN "PARKING BY DISABLED PERMIT ONLY" ATTACH SIGN TO POST WITH APPROPRIATE STAINLESS STEEL BOLTS, WASHERS & NUTS. (TYP. AT TOP & BOTTOM OF SIGN) "VAN ACCESSIBLE" SIGN GRADE NOTES: 1.PROVIDE (1) SIGN PER STALL 2.HC SIGNAGE PER MINNESOTA RULES 1341.0502 3.SEE DETAIL 2042 FOR SIGN INSTALLATION. HANDICAP PARKING SIGN NOT TO SCALE60"-66""NO PARKING" ATTACH SIGN TO POST WITH APPROPRIATE STAINLESS STEEL BOLTS, WASHERS & NUTS. (TYP. AT TOP & BOTTOM OF SIGN) GRADE NOTES: 1.PROVIDE (1) SIGN PER ACCESS AISLE 2.HC SIGNAGE PER MINNESOTA RULES 1341.0502 3.SEE DETAIL 2042 FOR SIGN INSTALLATION. HANDICAP ACCESS AISLE NO PARKING SIGN NOT TO SCALE60"-66"DRAWN 12/2016 LOUCKS PLATE NO. LOUCKS VAN ACCESSIBLE PARKING VEHICLE ID REQUIRED UP TO $200 FINE FOR VIOLATION 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYC8.3 OUTLET 48" TO 72" DOGHOUSES SHALL BE GROUTED BOTH ON THE INSIDE AND OUTSIDE OF THE STRUCTURE. PRECAST MANHOLE SECTIONS C OUTLET ELEVATION PIPE SIZE WILL VARY OUTLET CONTROL STRUCTURE - WEIR/ORIFICE INLET PRECAST BASE SLAB INLET ELEVATION A B 2 960.63 OUTLET CONTROL STRUCTURE ELEVATION TABLE OCS NO.A 6" E TOP OF WEIR ELEVATION WEIR TO BE REINFORCED WITH AT LEAST #4 REBAR, 12" ON CENTER. ORIFICE OPENING SIZE - F INVERT ELEVATION - G WEIR/ORIFICE E TOP OF WEIR ELEVATION ORIFICE OPENING SIZE - F INVERT ELEVATION - G J DRAWN 2/2016 LOUCKS PLATE NO. 4318LOUCKS RIM - (EMERGENCY OVERFLOW) D 2" 0"-8" 2" ORIFICE OPENING SIZE - H INVERT ELEVATION - I 960.57 B 960.57 C 969.98 D 965.86 E 12x12 F 963.03 G 6x6 H 960.57 I 48" J ORIFICE OPENING SIZE - H INVERT ELEVATION - I WETLAND BUFFER LOCATION SIGN1'-4"VARIABLE6"3"6"4.0' OUTLET FLOW 3'MIN.2" 0"-8" 2" NYLOPLAST SNOUT STRUCTURE OR APPROVED EQUAL. CONCRETE ADJUSTING RINGS, MIN. 4" - MAX. 10" NOTE: 24"x36" SLAB OPENING FOR NEENAH R-3067 CASTING WITH D.L., D.R. OR TYPE V GRATE. 27" ɸ SLAB OPENING FOR NEENAH R-3250 & R-1733 CASTING. SUMP CATCH BASIN / MANHOLE MINIMUM SLAB THICKNESS IS 6" FOR 14' DEPTH. INCREASE THICKNESS 1" FOR 4' OF DEPTH GREATER THAN 14'. PRECAST CONCRETE MANHOLE SECTIONS WITH "O"-RING RUBBER GASKETS. SLAB TOP TO BE SET IN A MORTAR BED. 6" PRECAST REINFORCED CONCRETE SLAB. STEPS 16" O.C. ON DOWNSTREAM SIDE. EXTRUDED ALUMINUM OR STEEL REINFORCED COPOLYMER PLASTIC.6"DRAWN 2/2016 LOUCKS PLATE NO. 4304LOUCKSBOLLARD 1/2" CROWN 1" CROWN 3'-6"3'-0"6"24" DIA. 2,500 PSI CONCRETE 6" DIP, CONC. FILLED, PAINTED OSHA YELLOW DRAWN 12/2016 LOUCKS PLATE NO. 2039LOUCKS *SYSTEM SHALL UTILIZE 7-40" CARTRIDGES NOPARKINGNOPARKINGNOPARKING13 GAC 2 SKH 1 AE 17 GF 3 SKH 42 SD 14 GF 1 QB 14 TY 3 PB 8 SG SM 2 3 PB 12 TY 3 PB 12 SG 3 PB SM 2SM 2SM 2 SM 2 NS 1 AE SOD SM 2 2 KC 2 TH 4 ABS 2 AE 1 SGM 1 KC 1 SGM 3 TH 1 QB 5 AC 12 AC 6 AC LANDSCAPE EDGING TYP. LANDSCAPE EDGING TYP. LANDSCAPE EDGING TYP. LANDSCAPE EDGING TYP. LIMITS OF IRRIGATION TYP. LIMITS OF IRRIGATION TYP. DECIDUOUS TREES QTY COMMON NAME BOTANICAL NAME CONT SIZE AE 4 ACCOLADE ELM Ulmus `Morton`B & B 2.5"Cal KC 3 KENTUCKY COFFEETREE Gymnocladus dioica B & B 2.5"Cal PB 12 PAPER BIRCH Betula papyrifera 25 gal SGM 2 SIENNA GLEN MAPLE Acer freemanii `Sienna Glen`B & B 2.5"Cal SKH 5 SKYLINE HONEYLOCUST Gleditsia triacanthos `Skycole`B & B 2.5"Cal QB 2 SWAMP WHITE OAK Quercus bicolor B & B 2.5"Cal ORNAMENTAL TREES QTY COMMON NAME BOTANICAL NAME CONT SIZE ABS 4 AUTUMN BRILLIANCE SERVICEBERRY Amelanchier x grandiflora `Autumn Brilliance`B & B 1.5"Cal TH 5 THORNLESS HAWTHORN Crataegus crus-galli `Inermis`B & B 1.5"Cal SHRUBS QTY COMMON NAME BOTANICAL NAME MIN CONT MIN SIZE SPACING AC 23 AUTUMN MAGIC CHOKEBERRY Aronia melanocarpa `Magic Carpet`5 gal 24" HGT 48" o.c. GAC 13 GREEN MOUND ALPINE CURRANT Ribes alpinum `Green Mound`5 gal 24" HGT 48" o.c. GF 31 GRO-LOW FRAGRANT SUMAC Rhus aromatica `Gro-Low`5 gal 24" SPRD 48" o.c. CONIFEROUS SHRUBS QTY COMMON NAME BOTANICAL NAME MIN CONT MIN SIZE SPACING SG 20 SEA GREEN JUNIPER Juniperus chinensis `Sea Green`5 gal 18" SPRD 60" o.c. TY 26 TAUNTON YEW Taxus x media `Taunton`5 gal 18" SPRD 48" o.c. PERENNIALS QTY COMMON NAME BOTANICAL NAME MIN CONT MIN SIZE SPACING SD 42 STELLA D` ORO DAYLILY Hemerocallis x `Stella de Oro`1 gal 24" o.c. GROUND COVERS CODE COMMON NAME BOTANICAL NAME SM 2 DECORATIVE STONE RIP RAP GREY TRAP ROCK RIP RAP SIZE - 5"-12" OVER FABRIC NS NATIVE SEED BWSR SEED MIX 36-211 SOD TURF SOD PLANT SCHEDULE 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYN NOTE: EXISTING CONDITIONS INFORMATION SHOWN IS PROVIDED BY LOUCKS. REFER TO ALTA/NSPS LAND TITLE SURVEY DATED 05/08/18 FOR COMPLETE SURVEY INFORMATION. Gopher State One Call WARNING: THE CONTRACTOR SHALL BE RESPONSIBLE FOR CALLING FOR LOCATIONS OF ALL EXISTING UTILITIES. THEY SHALL COOPERATE WITH ALL UTILITY COMPANIES IN MAINTAINING THEIR SERVICE AND / OR RELOCATION OF LINES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL AT 651-454-0002 AT LEAST 48 HOURS IN ADVANCE FOR THE LOCATIONS OF ALL UNDERGROUND WIRES, CABLES, CONDUITS, PIPES, MANHOLES, VALVES OR OTHER BURIED STRUCTURES BEFORE DIGGING. THE CONTRACTOR SHALL REPAIR OR REPLACE THE ABOVE WHEN DAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER. SCALE IN FEET 300 60 L1.1 LANDSCAPE REQUIREMENTS BUFFER YARD REQUIREMENT (500 TOTAL LF) 2 CANOPY TREES PER/100' UNIT (ONLY NEED 75% OF REQUIREMENT) TREES REQUIRED = 8 TOTAL TREES PROVIDED = 8 4 UNDERSTORY TREE PER/100' UNIT (ONLY NEED 75% OF REQUIREMENT) TREES REQUIRED = 15 TOTAL TREES PROVIDED = 9 6 SHRUBS PER/100' UNIT (ONLY NEED 75% OF REQUIREMENT) SHRUBS REQUIRED = 23 TOTAL SHRUBS PROVIDED = 23 DUE TO EXISTING PLANTINGS ON OR VERY CLOSE TO THE SOUTH PROPERTY LINE IN THE BUFFER YARD, MINIMAL PROPOSED PLANTINGS ARE PROVIDED TO AVOID OVER PLANTING AND ENCOURAGE LONG TERM HEALTH OF EXISTING AND PROPOSED PLANT MATERIAL. LANDSCAPE AREA REQUIREMENTS (63,310 SF OF VEHICULAR AREA) PROVIDE 8 SF OF LANDSCAPE AREA PER 100 SF OF VEHICULAR AREA LANDSCAPE AREA REQUIRED = 5,064 SF TREE REQUIREMENTS (5,064 SF OF LANDSCAPE AREA) PROVIDE 1 TREE PER 250 SF OF LANDSCAPE AREA TREES REQUIRED = 20 TOTAL TREES PROVIDED = 37 FOUNDATION PLANTINGS SHRUBS AND TREES HAVE BEEN PROVIDED ALONG BUILDING FOUNDATION GENERAL NOTES CONTRACTOR SHALL VISIT SITE PRIOR TO SUBMITTING BID. HE SHALL INSPECT SITE AND BECOME FAMILIAR WITH EXISTING CONDITIONS RELATING TO THE NATURE AND SCOPE OF WORK. VERIFY LAYOUT AND ANY DIMENSIONS SHOWN AND BRING TO THE ATTENTION OF THE LANDSCAPE ARCHITECT ANY DISCREPANCIES WHICH MAY COMPROMISE THE DESIGN AND/OR INTENT OF THE PROJECT'S LAYOUT. ASSURE COMPLIANCE WITH ALL APPLICABLE CODES AND REGULATIONS GOVERNING THE WORK OR MATERIALS SUPPLIED. CONTRACTOR SHALL PROTECT ALL EXISTING ROADS, CURBS/GUTTERS, TRAILS, TREES, LAWNS AND SITE ELEMENTS DURING PLANTING OPERATIONS. ANY DAMAGE TO SAME SHALL BE REPAIRED AT NO COST TO THE OWNER. CONTRACTOR SHALL VERIFY ALIGNMENT AND LOCATION OF ALL UNDERGROUND AND ABOVE GRADE UTILITIES AND PROVIDE THE NECESSARY PROTECTION FOR SAME BEFORE CONSTRUCTION / MATERIAL INSTALLATION BEGINS (MINIMUM 10' - 0" CLEARANCE). ALL UNDERGROUND UTILITIES SHALL BE LAID SO THAT TRENCHES DO NOT CUT THROUGH ROOT SYSTEMS OF ANY EXISTING TREES TO REMAIN. EXISTING CONTOURS, TRAILS, VEGETATION, CURB/GUTTER AND OTHER EXISTING ELEMENTS BASED UPON INFORMATION SUPPLIED TO LANDSCAPE ARCHITECT BY OTHERS. CONTRACTOR SHALL VERIFY ANY AND ALL DISCREPANCIES PRIOR TO CONSTRUCTION AND NOTIFY LANDSCAPE ARCHITECT OF SAME. THE ALIGNMENT AND GRADES OF THE PROPOSED WALKS, TRAILS AND/OR ROADWAYS ARE SUBJECT TO FIELD ADJUSTMENT REQUIRED TO CONFORM TO LOCALIZED TOPOGRAPHIC CONDITIONS AND TO MINIMIZE TREE REMOVAL AND GRADING. ANY CHANGE IN ALIGNMENT MUST BE APPROVED BY LANDSCAPE ARCHITECT. 06-15-18 CITY SUBMITTAL © 7001 France Avenue S, Suite 200, Edina, Minnesota 55435 952-893-9020 Fax 952-893-9299 www.bdhyoung.com interiors | architecture LOUCKS 7200 Hemlock Lane, Suite 300 Maple Grove, MN 55369 763.424.5505 www.loucksinc.com PLANNING CIVIL ENGINEERING LAND SURVEYING LANDSCAPE ARCHITECTURE ENVIRONMENTAL LOUCKS PROJECT NO. 17516NOT FOR CONSTRUCTIONFOR INFORMATION ONLYL2.1 SCALE: 3/4" = 1'-0" PERENNIAL PLANTING Perennial.Dwg LOOSEN ROOTS OF PLANT MATERIAL PRIOR MULCH - SEE SPECS. 3" DEPTH EDGER - SEE SPECS. 12" DEPTH (MIN). LOAMPLANTING SOIL - SEE SPECS. VARIES SEE PLAN TO PLANTING EDGE VARIES - SEE PLAN 4 L2.1 SHRUBS TO BE PLACED SO THAT MULCH - 3" DEEP - SEE SPEC LANDSCAPE FABRIC - SEE SPEC. PLANTING SOIL - SEE SPEC. SCARIFY BOTTOM AND SIDES OF HOLE PRIOR TO PLANTING LOOSEN ROOTS OF ALL CONTAINERIZED PLANTS. EDGE VARIES - REFER TO PLAN REFER TO PLAN 18" MIN. SCALE: 3/4" = 1'-0" SHRUB PLANTING DETAIL EDGING MATERIAL - SEE SPEC. BUILDING WALL (TYP) TOP OF CONTAINER SITS FLUSH WITH PROPOSED GRADE. 3 L2.1 Coniferous Tree.DWG EDGE VARIES - SEE PLAN WOOD STAKE (OPTIONAL) MULCH - 4" DEEP - PER SPECS. MULCH MUST ROOT BALL SET ON MOUNDED SUBGRADE SAFETY FLAGGING - ONE PER WIRE POLYETHYLENE STRAP 16"x2" POLYPROPYLENE OR HOLE PRIOR TO PLANTING SCARIFY BOTTOM AND SIDES OF PERIOD. STAKING IS SUGGESTED, BUT POSITION THROUGH THE WARRANTY MAINTAINING ALL TREES IN A PLUMB THE CONTRACTOR IS RESPONSIBLE FOR CONIFEROUS TREE PLANTING DETAIL SCALE: 1/2" = 1'-0" PLANTING. NOTIFY LANDSCAPE ARCHITECT TESTING PERCOLATION RATES PRIOR TO CONTRACTOR IS RESPONSIBLE FOR NOT REQUIRED. ANY STAKING MUST IN A.N.A. GUIDELINES FOR STANDARD CONFORM WITH PRACTICES AS DEFINED PRACTICES IMMEDIATELY IF POOR DRAINAGE EXISTS. REMOVE ALL FLAGGING AND LABELING IN 8-12" LIFTS AND SATURATE SOIL WITH PLANTING OPERATIONS. PLACE BACKFILL WATER TREE THOROUGHLY DURING FROM TREE. AFTER PLANTING IS COMPLETE. PRUNE ANY DAMAGED BRANCHES WATER. DO NOT COMPACT MORE THAN NECESSARY TO MAINTAIN PLUMB. NOT BE IN CONTACT WITH TRUNK. 2 x ROOT BALL WIDTH 2 L2.1 EDGE VARIES - SEE PLAN WOOD STAKE (OPTIONAL) SET PLANT ON UNDISTURBED NATIVE SOIL SAFETY FLAGGING - ONE PER WIRE TREE WRAP TO FIRST BRANCH POLYETHYLENE STRAP 16"x2" POLYPROPYLENE OR HOLE PRIOR TO PLANTING SCARIFY BOTTOM AND SIDES OF PERIOD. STAKING IS SUGGESTED, BUT POSITION THROUGH THE WARRANTY MAINTAINING ALL TREES IN A PLUMB THE CONTRACTOR IS RESPONSIBLE FOR DECIDUOUS TREE PLANTING DETAIL SCALE: 1/2" = 1'-0" PLANTING. NOTIFY LANDSCAPE ARCHITECT TESTING PERCOLATION RATES PRIOR TO CONTRACTOR IS RESPONSIBLE FOR NOT REQUIRED. ANY STAKING MUST IN A.N.A. GUIDELINES FOR STANDARD CONFORM WITH PRACTICES AS DEFINED PRACTICES Deciduous Tree.DWG IMMEDIATELY IF POOR DRAINAGE EXISTS. REMOVE ALL FLAGGING AND LABELING IN 8-12" LIFTS AND SATURATE SOIL WITH PLANTING OPERATIONS. PLACE BACKFILL WATER TREE THOROUGHLY DURING FROM TREE. BRANCHES AFTER PLANTING IS COMPLETE. PRUNE DAMAGED AND CROSSING WATER. DO NOT COMPACT MORE THAN NECESSARY TO MAINTAIN PLUMB. 2 x ROOT BALL WIDTH MULCH - 4" DEEP. NO MULCH IN CUT BACK WIRE BASKET CONTACT WITH TRUNK - SEE SPECS. ROOT FLARE EVEN WITH OR JUST ABOVE GRADE. 1 L2.1 LANDSCAPE INSTALLATION: COORDINATE THE PHASES OF CONSTRUCTION AND PLANTING INSTALLATION WITH OTHER CONTRACTORS WORKING ON SITE. NO PLANTING WILL BE INSTALLED UNTIL COMPLETE GRADING AND CONSTRUCTION HAS BEEN COMPLETED IN THE IMMEDIATE AREA. WHERE SOD/SEED ABUTS PAVED SURFACES, FINISHED GRADE OF SOD/SEED SHALL BE HELD 1" BELOW SURFACE ELEVATION OF TRAIL, SLAB, CURB, ETC. SEED ALL AREAS DISTURBED DUE TO GRADING OTHER THAN THOSE AREAS NOTED TO RECEIVE SOD. SEED SHALL BE INSTALLED AND MULCHED AS PER MNDOT SPECS. SOD ALL DESIGNATED AREAS DISTURBED DUE TO GRADING. SOD SHALL BE LAID PARALLEL TO THE CONTOURS AND SHALL HAVE STAGGERED JOINTS. ON SLOPES STEEPER THAN 3:1 OR IN DRAINAGE SWALES, THE SOD SHALL BE STAKED TO THE GROUND. ALL PLANT MATERIAL SHALL COMPLY WITH THE LATEST EDITION OF THE AMERICAN STANDARD FOR NURSERY STOCK, AMERICAN ASSOCIATION OF NURSERYMEN. UNLESS NOTED OTHERWISE, DECIDUOUS SHRUBS SHALL HAVE AT LEAST 5 CANES AT THE SPECIFIED SHRUB HEIGHT. ORNAMENTAL TREES SHALL HAVE NO V CROTCHES AND SHALL BEGIN BRANCHING NO LOWER THAN 3' ABOVE ROOT BALL. STREET AND BOULEVARD TREES SHALL BEGIN BRANCHING NO LOWER THAN 6' ABOVE FINISHED GRADE. ANY CONIFEROUS TREE PREVIOUSLY PRUNED FOR CHRISTMAS TREE SALES SHALL NOT BE USED. ALL CONIFEROUS TREES SHALL BE FULL FORM, NATURAL TO THE SPECIES, WITHOUT PRUNING. PLAN TAKES PRECEDENCE OVER PLANT SCHEDULE IF DISCREPANCIES IN QUANTITIES EXIST. SPECIFICATIONS TAKE PRECEDENCE OVER NOTES. ALL PROPOSED PLANTS SHALL BE LOCATED AND STAKED AS SHOWN ON PLAN. LANDSCAPE ARCHITECT MUST APPROVE ALL STAKING OF PLANT MATERIAL PRIOR TO ANY AND ALL DIGGING. NO PLANT MATERIAL SUBSTITUTIONS WILL BE ACCEPTED UNLESS APPROVAL IS REQUESTED OF THE LANDSCAPE ARCHITECT BY THE LANDSCAPE CONTRACTOR PRIOR TO THE SUBMISSION OF A BID AND/OR QUOTATION. ADJUSTMENTS IN LOCATION OF PROPOSED PLANT MATERIALS MAY BE NEEDED IN FIELD. SHOULD AN ADJUSTMENT BE ADVISED, THE LANDSCAPE ARCHITECT MUST BE NOTIFIED. ALL PLANT MATERIALS SHALL BE FERTILIZED UPON INSTALLATION WITH DRIED BONE MEAL, OTHER APPROVED FERTILIZER MIXED IN WITH THE PLANTING SOIL PER THE MANUFACTURER'S INSTRUCTIONS OR MAY BE TREATED FOR SUMMER AND FALL INSTALLATION WITH AN APPLICATION OF GRANULAR 0-20-20 OF 12 OZ PER 2.5" CALIPER PER TREE AND 6 OZ PER SHRUB WITH AN ADDITIONAL APPLICATION OF 10-10-10 THE FOLLOWING SPRING IN THE TREE SAUCER. ALL PLANTING AREAS RECEIVING GROUND COVER, PERENNIALS, ANNUALS, AND/OR VINES SHALL RECEIVE A MINIMUM OF 12" DEPTH OF PLANTING SOIL CONSISTING OF AT LEAST 45 PARTS TOPSOIL, 45 PARTS PEAT OR MANURE AND 10 PARTS SAND. ALL AREAS RECEIVING SEED OR SOD MUST RECEIVE A MINIMUM OF 6" DEPTH OF TOPSOIL. TOPSOIL TO BE INCORPORATED INTO THE UNDERLYING SOIL DURING FINAL SITE GRADING. SOIL SURFACES COMPACTED DURING CONSTRUCTION AND REMAINING PERVIOUS UPON COMPLETION OF CONSTRUCTION MUST BE DECOMPACTED THROUGH SOIL AMENDMENT AND/OR RIPPING TO A DEPTH OF 18". AVOID DISTURBING UTILITIES, TREE ROOTS AND OTHER EXISTING VEGETATION. ALL PLANTS TO BE INSTALLED AS PER PLANTING DETAILS. WRAPPING MATERIAL SHALL BE CORRUGATED PVC PIPING 1" GREATER IN CALIPER THAN THE TREE BEING PROTECTED OR QUALITY, HEAVY, WATERPROOF CREPE PAPER MANUFACTURED FOR THIS PURPOSE. WRAP ALL DECIDUOUS TREES PLANTED IN THE FALL PRIOR TO 12-1 AND REMOVE ALL WRAPPING AFTER 5-1. BLACK METAL EDGER TO BE USED TO CONTAIN SHRUBS, PERENNIALS, AND ANNUALS WHERE BED MEETS SOD/SEED UNLESS NOTED OTHERWISE. ALL SHRUB BED MASSINGS TO RECEIVE 3" DEEP SHREDDED HARDWOOD MULCH AND FIBER MAT WEED BARRIER. ALL TREES NOT IN PLANTING BEDS TO RECEIVE A 4' DIA. TREE RING WITH 4" DEEP SHREDDED HARDWOOD MULCH. NO MULCH IN DIRECT CONTACT WITH TREE TRUNK. WOOD MULCH TO BE DOUBLE SHREDDED HARDWOOD MULCH. ALL ANNUAL AND PERENNIAL PLANTING BEDS TO RECEIVE 3" DEEP SHREDDED HARDWOOD MULCH WITH NO WEED BARRIER. SPREAD GRANULAR PRE EMERGENT HERBICIDE (PREEN OR EQUAL) PER MANUFACTURES RECOMMENDATIONS UNDER ALL MULCHED AREAS. MAINTENANCE STRIPS TO HAVE EDGER AND MULCH AS SPECIFIED/INDICATED ON DRAWING OR IN SPECIFICATION. IF THE LANDSCAPE CONTRACTOR IS CONCERNED OR PERCEIVES ANY DEFICIENCIES IN THE PLANT SELECTIONS, SOIL CONDITIONS OR ANY OTHER SITE CONDITION WHICH MIGHT NEGATIVELY AFFECT PLANT ESTABLISHMENT, SURVIVAL OR GUARANTEE, HE MUST BRING THESE DEFICIENCIES TO THE ATTENTION OF THE LANDSCAPE ARCHITECT PRIOR TO PROCUREMENT AND/OR INSTALLATION. CONTRACTOR SHALL SUBMIT A WRITTEN REQUEST FOR THE OWNER ACCEPTANCE INSPECTION OF ALL LANDSCAPE AND SITE IMPROVEMENTS. CONTRACTOR IS RESPONSIBLE FOR ON-GOING MAINTENANCE OF ALL NEWLY INSTALLED MATERIALS UNTIL TIME OF OWNER ACCEPTANCE. ANY ACTS OF VANDALISM OR DAMAGE WHICH MAY OCCUR PRIOR TO OWNER ACCEPTANCE SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. CONTRACTOR SHALL PROVIDE THE OWNER WITH A MAINTENANCE PROGRAM INCLUDING, BUT NOT NECESSARILY LIMITED TO, PRUNING, FERTILIZATION AND DISEASE/PEST CONTROL. CONTRACTOR SHALL GUARANTEE NEW PLANT MATERIAL THROUGH ONE CALENDAR YEAR FROM THE DATE OF OWNER ACCEPTANCE. WARRANTY (ONE FULL GROWING SEASON) FOR LANDSCAPE MATERIALS SHALL BEGIN ON THE DATE OF ACCEPTANCE BY THE LANDSCAPE ARCHITECT AFTER THE COMPLETION OF PLANTING OF ALL LANDSCAPE MATERIALS. NO PARTIAL ACCEPTANCE WILL BE CONSIDERED. REPRODUCIBLE AS-BUILT DRAWING(S) OF ALL LANDSCAPE INSTALLATION AND SITE IMPROVEMENTS UPON COMPLETION OF CONSTRUCTION INSTALLATION AND PRIOR TO PROJECT ACCEPTANCE. UNLESS NOTED OTHERWISE THE APPROPRIATE DATES FOR SPRING PLANT MATERIAL INSTALLATION AND SEED/SOD PLACEMENT IS FROM THE TIME GROUND HAS THAWED TO JUNE 15. FALL SODDING IS GENERALLY ACCEPTABLE FROM AUGUST 15 - NOVEMBER 1. FALL SEEDING FROM AUGUST 15 - SEPTEMBER 15; DORMANT SEEDING IN THE FALL SHALL NOT OCCUR PRIOR TO NOVEMBER 1. PLANTING OUTSIDE THESE DATES IS NOT RECOMMENDED. ANY ADJUSTMENT MUST BE APPROVED IN WRITING BY THE LANDSCAPE ARCHITECT. CONIFEROUS PLANTING MAY OCCUR FROM AUGUST 15 - OCTOBER 1 AND FALL DECIDUOUS PLANTING FROM THE FIRST FROST UNTIL NOVEMBER 15. PLANTING OUTSIDE THESE DATES IS NOT RECOMMENDED. ANY ADJUSTMENT MUST BE APPROVED IN WRITING BY THE LANDSCAPE ARCHITECT. PROTECT ALL EXISTING OAKS ON SITE SCHEDULED TO REMAIN. IF EXISTING OAKS ARE DAMAGED IN ANY MANNER, ABOVE OR BELOW GROUND IN THE ROOT SYSTEM, AN ASPHALTIC TREE PRUNING PAINT SHOULD BE APPLIED IMMEDIATELY AFTER WOUNDING. OAKS ARE NOT TO BE PRUNED, REMOVED OR TRANSPLANTED BETWEEN APRIL 15 AND JULY 1. NOTIFY LANDSCAPE ARCHITECT IF THESE DATES ARE UNAVOIDABLE. LANDSCAPE CONTRACTOR SHALL ESTABLISH TO HIS SATISFACTION THAT SOIL AND COMPACTION CONDITIONS ARE ADEQUATE TO ALLOW FOR PROPER DRAINAGE AT AND AROUND THE BUILDING SITE. MAINTENANCE STRIP AT BUILDING EDGE SCALE: 1 1/2" = 1'-0" GEOTEXTILE WOVEN BUILDING WALL SOD LANDSCAPE EDGER (TYP) SEE SPECS LANDSCAPE FABRIC ROCK MULCH - REFER TO LANDSCAPE PLAN FOR MORE INFO. OR BACK OF CURB 7 L2.1 IRRIGATION NOTES: VERIFY PROPOSED IRRIGATION SYSTEM LAYOUT AND CONFIRM COMPLETE LIMITS OF IRRIGATION PRIOR TO SUPPLYING SHOP DRAWINGS. LANDSCAPE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING AN IRRIGATION LAYOUT PLAN AND SPECIFICATION AS A PART OF THE SCOPE OF WORK WHEN BIDDING. THESE SHALL BE APPROVED BY THE LANDSCAPE ARCHITECT PRIOR TO ORDER AND/OR INSTALLATION. IT SHALL BE THE LANDSCAPE CONTRACTORS RESPONSIBILITY TO INSURE THAT ALL SODDED/SEEDED AND PLANTED AREAS ARE IRRIGATED PROPERLY, INCLUDING THOSE AREAS DIRECTLY AROUND AND ABUTTING BUILDING FOUNDATION. THE LANDSCAPE CONTRACTOR SHALL PROVIDE THE OWNER WITH A WATERING/LAWN IRRIGATION SCHEDULE APPROPRIATE TO THE PROJECT SITE CONDITIONS AND TO PLANT MATERIAL GROWTH REQUIREMENTS. CONTRACTOR IS NOT TO SPRINKLE ACROSS PAVEMENT. CONTRACTOR TO INCORPORATE RAIN SENSOR INTO IRRIGATION SYSTEM. PLANTINGS OUTSIDE THE LIMITS OF IRRIGATION ARE TO BE WATERED REGULARLY UNTIL PLANTING/SOD/SEED HAS BEEN ESTABLISHED. UP A6.00. 2 A6.00. 3 A6.00. 4 A6.00. 1 FUTURE TENANT SPACE 16,500 S.F. MAIN LEVEL 31,500 S.F. CL36' - 3 1/2"198' - 8 3/8"138' - 3 1/8" 373' - 3 1/8"36' - 4 3/4"124' - 0"160' - 4 3/4"26' - 8 3/8"137' - 8 3/8"164' - 4 3/4"7001 France Avenue South, Suite 200 Edina, Minnesota 55435 952-893-9020 fax 952-893-9299 www.bdhyoung.com Project Information Issue Record © bdh+young Sheet Title Sheet Information Job Code Drawn By Reviewed By Date Printed Name Signature Lic #DateNO T FOR CONSTRUCTIONI hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of DescriptionDateNo.D:\2018 Revit Local\A18_Control-Concepts_007700_NafeM.rvt2018-06-15 11:37:53AMCONTROL CONCEPTS 8077 CENTURY BLVD. CHANHASSEN, MN A1.11. 00770 MINNESOTA JEFFREY GEARS 2018-06-15 50937 PRELIMINARY FLOOR PLAN - LEVEL 01 2018-06-15 KF/MN JG 3/32" = 1'-0" PRELIMINARY MAIN LEVEL FLOOR PLAN1 N OMNUJMSJNR pfqb=mi^k=obsfbt=pbq DN A6.00. 2 A6.00. 3 A6.00. 4 A6.00. 1 OPEN TO BELOW OPEN TO BELOW OPEN TO BELOW UPPER LEVEL 13,500 S.F. 36' - 10"76' - 8" 113' - 5 7/8"160' - 4 3/4"26' - 8 3/8"135' - 8 3/8"162' - 4 3/4"7001 France Avenue South, Suite 200 Edina, Minnesota 55435 952-893-9020 fax 952-893-9299 www.bdhyoung.com Project Information Issue Record © bdh+young Sheet Title Sheet Information Job Code Drawn By Reviewed By Date Printed Name Signature Lic #DateNO T FOR CONSTRUCTIONI hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of DescriptionDateNo.D:\2018 Revit Local\A18_Control-Concepts_007700_NafeM.rvt2018-06-15 11:37:53AMCONTROL CONCEPTS 8077 CENTURY BLVD. CHANHASSEN, MN A1.12. 00770 MINNESOTA JEFFREY GEARS 2018-06-15 50937 PRELIMINARY FLOOR PLAN - LEVEL 02 2018-06-15 KF/MN JG 3/32" = 1'-0" PRELIMINARY UPPER LEVEL FLOOR PLAN1 N OMNUJMSJNR pfqb=mi^k=obsfbt=pbq 38' - 0"ANGLED WALL38' - 0"ANGLED WALL ANGLED WALL ANGLED WALL4' - 0"ALUMINUM STOREFRONT SYSTEM - TYP. ALUMINUM PUNCHED WINDOW OPENING - TYP. TWO TONE PRECAST CONCRETE WALL PANEL - TYP. PERFORATED METAL PANELS OVER PRECAST - TYP. ALUMINUM RIBBON WINDOW OPENING - TYP. ACCENT METAL PANELS EXTERIOR METAL WALL PANEL - TYP. METAL WALL CAP FLASHING INDIVIDUALLY LIT CHANNEL STYLE LETTERS ACCENT STONE38' - 0"ANGLED WALL ALUMINUM PUNCHED WINDOW OPENING - TYP. PERFORATED METAL PANELS OVER PRECAST - TYP. ACCENT METAL PANELSEXTERIOR METAL WALL PANEL - TYP. METAL WALL CAP FLASHING ACCENT STONEALUMINUM RIBBON WINDOW OPENING - TYP. TWO TONE PRECAST CONCRETE WALL PANEL - TYP.40' - 0"TWO TONE PRECAST CONCRETE WALL PANEL - TYP. PERFORATED METAL PANELS OVER SILVER ACCENT WALL - TYP. 7001 France Avenue South, Suite 200 Edina, Minnesota 55435 952-893-9020 fax 952-893-9299 www.bdhyoung.com Project Information Issue Record © bdh+young Sheet Title Sheet Information Job Code Drawn By Reviewed By Date Printed Name Signature Lic #DateNO T FOR CONSTRUCTIONI hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of DescriptionDateNo.D:\2018 Revit Local\A18_Control-Concepts_007700_NafeM.rvt2018-06-15 11:38:00AMCONTROL CONCEPTS 8077 CENTURY BLVD. CHANHASSEN, MN A6.00. 00770 MINNESOTA JEFFREY GEARS 2018-06-15 50937 PRELIMINARY ELEVATIONS 2018-06-15 KF/MN JG 3/32" = 1'-0" PRELIMINARY ELEVATION - EAST4 3/32" = 1'-0" PRELIMINARY ELEVATION - SOUTH3 3/32" = 1'-0" PRELIMINARY ELEVATION - NORTH1 3/32" = 1'-0" PRELIMINARY ELEVATION - WEST2 OMNUJMSJNR pfqb=mi^k=obsfbt=pbq PRECAST WALL PANEL SAMPLE PERFORATED METAL SAMPLE CONCEPT IMAGE PLANNING COMMISSION STAFF REPORT Tuesday, July 17, 2018 Subject 2040 Comprehenisve Plan Section PUBLIC HEARINGS Item No: B.2. Prepared By Kate Aanenson, Community Development Director, AICP File No: GEN130 PROPOSED MOTION: The Chanhassen Planning Commission recommends that the City Council approve the 2040 Comprehensive Plan and submit the Plan to the Metropolitan Council for their determination of consistency with the Metropolitan System Plans. SUMMARY OF REQUEST All cities, counties, and townships within the sevencounty metropolitan region must prepare a comprehensive plan and update that plan as needed every 10 years. BACKGROUND The City of Chanhassen 2040 Comprehensive Plan update began in 2016 with staff initiating the data analysis required for the plan update. April 4, 2017 Overview of Comprehensive Plan. April 18, 2017 Sewer, Transportation, and Water July18, 2017 Housing, Land Use, Sewer, Water and Parks & Open Space August 1, 2017 Natural Resources August 15, 2017 Water Resources October 3, 2017 Surface Water, Goals & Policies, Implementation and CIP October 9, 2017 City Council approved the Plan for jurisdictional review October 17, 2017 Public Hearing on Comprehensive Plan April 3, 2018 Planning Commission reviewed the Plan based on comments received during the review period, jurisdiction comments, and the city’s written responses to any comments. RECOMMENDATION Staff recommends that the Planning Commission approve the 2040 Comprehensive Plan and submit it to City Council for adoption. PLANNING COMMISSION STAFFREPORTTuesday, July 17, 2018Subject2040 Comprehenisve PlanSectionPUBLIC HEARINGS Item No: B.2.Prepared By Kate Aanenson, CommunityDevelopment Director, AICP File No: GEN130PROPOSED MOTION:The Chanhassen Planning Commission recommends that the City Council approve the 2040Comprehensive Plan and submit the Plan to the Metropolitan Council for their determination ofconsistency with the Metropolitan System Plans.SUMMARY OF REQUESTAll cities, counties, and townships within the sevencounty metropolitan region must prepare a comprehensive plan andupdate that plan as needed every 10 years.BACKGROUNDThe City of Chanhassen 2040 Comprehensive Plan update began in 2016 with staff initiating the data analysis requiredfor the plan update.April 4, 2017 Overview of Comprehensive Plan.April 18, 2017 Sewer, Transportation, and WaterJuly18, 2017 Housing, Land Use, Sewer, Water and Parks & Open SpaceAugust 1, 2017 Natural ResourcesAugust 15, 2017 Water ResourcesOctober 3, 2017 Surface Water, Goals & Policies, Implementation and CIPOctober 9, 2017 City Council approved the Plan for jurisdictional reviewOctober 17, 2017 Public Hearing on Comprehensive PlanApril 3, 2018 Planning Commission reviewed the Plan based on comments received during the review period,jurisdiction comments, and the city’s written responses to any comments.RECOMMENDATION Staff recommends that the Planning Commission approve the 2040 Comprehensive Plan and submit it to City Council for adoption. ATTACHMENTS: PC Memo Comprehensive Plan 71718 Chapter 1 Introduction Chapter 2 Land Use Chapter 3 Housing Chapter 4 Natural Resources Chapter 5 Parks and Trails Chapter 6 Transportation Chapter 7 Sewer Chapter 7 Sewer Appendix A Chapter 7 Sewer Appendix BE Chapter 8 Water Chapter 9 Surface Water Chapter 10 Comp Plan & Implementation City of Chanhassen 2040 Comprehensive Plan2 Chapter 1Introduction Chanhassen is a Community for Life. Providing for Today and Planning for Tomorrow. City of Chanhassen 2040 Comprehensive Plan3 1 | Introduction 1.1 | Community Vision Chanhassen is a Community for Life. Providing for Today and Planning for Tomorrow. The update to the 2040 Comprehensive Plan began with a visioning exercise in April of 2016. The visioning process was done with the City Council, and the Planning, Parks and Recreation, Environmental and Senior Commissions. The visioning exercise summary showed that people live in Chanhassen for many reasons. The small town feel but being within an easy striking distance of big city amenities is important. The parks, lakes, and trails with open space and recreational opportunities are important to people. Chanhassen has community values that are family friendly, promote health, engaging, and close-knit neighbors. It is kid-friendly with strong schools and beautiful parks. It is a safe, neighborly place to live with low crime rates. The downtown is attractive and walkable. There are many hous- ing choices and low taxes. Special attractions and community amenities are available such as the Chanhassen Dinner Theatres, Chanhassen Library, Paisley Park Museum, fishing, the February Festival and the 4th of July Celebration. Chanhassen has been nationally recognized many times as a great place to live. Our reputation is the result of years of dedicated service by many in the community, including our school districts, churches, businesses, civic partners, resi- dents and public officials, all of whom have helped inspire and implement the values and vision that we enjoy today. It is our vision that Chanhassen is a community for life. By providing for today’s needs and planning for tomorrow, we ensure that Chanhassen’s high quality of life is sustainable for future generations. Residents have a strong sense of community built through longstanding traditions, active civic and business organizations, and friendly neighbor- hoods. Residents benefit from a thriving downtown, an extensive park and trail system, excellent schools, countless community events and the preservation and enhancement of our natural amenities. Chanhassen has so many things to offer: a wide range of housing stock to accommodate all budgets and stages of life; two high-performing school districts; a large commercial base so residents can live and work in the community; ample entertainment both in town and in neighboring communities; and, easy mobility in and around Chanhassen by almost any mode of transportation. Residents appreciate these things and take pride in the community. The city recognizes the relationship between employment, housing, and retail demand. Many families have lived here since before Chanhassen was incorporated as a city in 1967. They’ve seen the city grow by 20,000 people in the last thirty years but still manage to keep its small-town charm and appeal. Residents of Chanhassen are very engaged in their neighborhoods and with the city. National Night Out, an annual community-building campaign that encourages residents to hold block parties and get to know their neighbors, contin- ues to be a popular event. The city helps to coordinate efforts and schedules visits from city leaders and safety person- nel, which helps the community feel connected to local government. The fire department consists almost entirely of volunteers who give up their nights, weekends and family time to respond in emergencies. There are citizen commis- sions that work on a specific concern in the city: parks and recreation, planning, senior citizens and the environment. Each commission has between seven and ten members that serve for one to three-year terms and act in an advisory role to the City Council. There is almost always a waiting list to get on any of the commissions. There are also countless opportunities to volunteer for each of the city’s 12 annual community events, meals on wheels, coaching youth sports and many more. All of these help to further the overall sense of community and keep residents in Chanhassen. City of Chanhassen 2040 Comprehensive Plan4 1.2 | Development The City of Chanhassen is defined by the Metropolitan Council as Emerging Suburban Edge which is expected to plan for forecasted population growth at densities of at least 3-5 units per acre for new development and rede- velopment. The 2030 Comprehensive Plan anticipated a faster rate of growth than what occurred. This was due to the downturn in the housing market. The city estimates that by 2040 the city will be built out with a popula- tion of 37,100. The Comprehensive Plan is designed to serve as a guide for the local decision-making process. The cornerstone of the Comprehensive Plan process is the development and adoption of goals and policies which identify the desired qualities and overall vision for the future of the community. These goals and policies are based on the needs of the city along with the unique characteristics and values of the community. The city recognizes the relationship between employment, housing and retail demand and has strived to balance these factions to make a community for life. 1.3 | Economic Competitiveness Since the adoption of the 2030 Comprehensive Plan in 2008, the city has: » Added 400,000 square feet of office industrial space » Added 300,000 square feet of commercial space. » Added 1,085 dwelling units FIGURE 1 | City of Chanhassen’s Largest Employers Source: Survey by City Administration and Finance Departments ( 1 ) The statistic for total city employment is not available, therefore the percentage represents the percentage of the top ten listed. Percentag e Percen tage of To t al City o f Total City Employer Emp loyees Ran k Employment(1 )Emp loyees Ran k Employment(1) Lifetime Fit nes s 1,218 1 21.0%980 2 16.3% In s tant W eb Compan ies 1,193 2 20.6%824 4 13.7% Ro s emount In c 943 3 16.3%1,577 1 26.2% Th e Bern ard Group 581 4 10.0% - - Eas tern Carver County Schools 400 5 6.9%165 10 2.7% RR Donn elley 382 6 6.6%280 7 4.7% Gen eral M ills 326 7 5.6%475 5 7.9% Ch anhassen Dinner Theatres 275 8 4.7%300 6 5.0% Minnes o t a Lan ds cape A rboretum 270 9 4.7%240 9 4.0% Ch eckpoint Sy s tems Inc 204 10 3.5% - - Su per Value Headquarters - - 900 3 14.9% By erly's - - 280 7 4.7% To tal 5,792 6,021 2016 2007 City of Chanhassen’s Largest Employers City of Chanhassen 2040 Comprehensive Plan5 1.4 | Attraction, Retention and Expansion The city continues to work with existing business by participating in meet and greet activities to identify any issues that businesses may have. The city also works with the SouthWest Metro Chamber of Commerce hosting small business roundtables to learn about local business needs. In September of 2016, the city participated in a Carver County initiated/Greater MSP Broker event, an event marketing Carver County as a place to do business. The city and the Carver County CDA have worked together to add a new program to assist new and existing small businesses in the county. The program, called “Open to Business”, provides one on one business counseling to current and prospective entrepreneurs. Open to Business consultants work with entrepreneurs to develop a strong business plan, identify challenges and opportunities, and to tailor solutions to each business. The service is available free of charge to all county residents and any business located in Carver County. The city has secured grants to help businesses defray some of the costs of development. In the last 10 years working with MN Department of Employment and Economic Development (DEED) and Greater MSP, the city has attracted the following new business: » Federal Packaging relocated to Chanhassen to expand an existing business by building a new 140,800 square foot facility and adding 32 new jobs to the existing 15 jobs over a five year period. » The Bernard Group relocated to Chanhassen in order to expand the size of an existing business. They were able to remodel a vacant building of 156,000 square feet and provide for 581 employees » Emerson Automation Solutions, with the new investments in the oil industry, Emerson has invested $14 million in the converting 30,000 square feet of office space to factory space and added 80 new employees with the potential for more. 1.5 | Redevelopment With the maturing of the downtown core of the city, redevelopment is happening. Buildings older than 30 years are being redeveloped into new business. The city has pursued DEED contamination grants as well as Metropolitan Council Livable Communities Demonstration Account (LCDA) grants to assist in redevelopment. The city is currently conducting an update to its Downtown Vision. The plan will examine current market conditions to strategically direct redevelopment as the maturing businesses and infrastructure redevelop. 1.6 | Pending Projects Avienda With the update of the 2030 Comprehensive plan, the city dual guided 120 acres to either Office or Regional Commercial District. This site has access off Highway 212 and two county roads. The city has been working on the approvals for the project the last two years. The 2030 Comprehensive Plan states: Definition/Vision A mixed commercial district with retail and entertainment uses of a scale and function that serves a regional market. The physical environment emphasizes an attractive, comfortable walking experience for shoppers and visitors and is designed to serve trail users and mass transit as well as automobile traffic. Centers of this type have at least two major retail anchors and are characterized by the diversity and mix of retail and service uses within their boundaries. Uses within this district should complement existing retail users in the other commercial districts. Development of these centers shall be planned as a group of organized uses and structures to accommodate a sensitive transition between commercial activities such as loading, parking of automobiles, lighting and trash collection and surrounding residential uses. Such centers shall be designed with one theme, with similar architectural style, similar exterior building materials and a coordinated landscaping theme. Vehicle and pedestrian access is coordinated and logically linked to provide a City of Chanhassen 2040 Comprehensive Plan6 comprehensive circulation system, building materials and a coordinated landscaping theme. Vehicle and pedestrian access is coordinated and logically linked to provide a comprehensive circulation system. This project includes 5 districts. The goal of this project is to be a walkable mixed-used development » Sub-District 1 - Workplace – provides a location for uses with high concentrations of employees, such as medical/technology related office, and other corporate or institutional uses » Sub-District 2 - The Village – provides the broadest variety, highest density and greatest intensity of development, encouraging both vertical and horizontal mixed use » Sub-District 3 - Commercial – provides a location for large-scale retail and other auto-oriented commercial uses » Sub-District 4 - Multi-Family – provides opportunities for high density senior or rental apartments » Sub-District 5 - Low-Density Residential – provides opportunities for small lot homes The total building square footage for this development will be 1,000,000 square feet of office, and retail with up to 800 dwelling units (including apartments, senior housing and townhomes). The Lifestyle Center was given prelimi- nary approval by the City Council in the spring of 2017. Construction is anticipated to begin in 2019. 1.7 | Goals and Policies 1.7.1 | Land Use Goal 1 Create a mixture of development capable of providing a high quality of life and a reliable tax base. Policies » Create a land use plan that can be utilized as a fundamental tool for directing the community’s growth and development. » Understand that not all uses generate revenue for the city, and strive for a mixture of development that will both meet the needs of residents and assure the city’s financial health. » Encourage development within the MUSA, and support the planned and efficient expansion of urban services to increase the amount of developable land. » Support low-density residential development in appropriate areas of the community in such a manner as to maintain the aesthetic of existing single-family areas, and to create new neighborhoods of similar character and quality. » Designate sufficient land to provide for a wide spectrum of housing. Adequate land should be set-aside for medium and high-density land uses. The city will discourage the conversion of these areas to lower density uses in order to ensure that city’s goals of providing a variety of housing options can be met. » Chanhassen will continue to direct commercial uses to the central business district. Development outside of the central business district shall complement, rather than compete with the existing commercial core. » The city will support the development of neighborhood and local service centers where appropriate. These uses may be developed as part of a mixed-use or Planned Unit Development (PUD); however, development of unplanned and strip commercial centers will be discouraged. » Industrial and office developments will be supported as a means of strengthening and diversifying the city’s tax base. These developments should be planned in such a way as to minimize environmental, neighborhood and traffic impacts. » Transitions should be created between different land uses. The more incompatible the land uses, the more important the transition zone. Whenever possible natural features should be used to create transitions between incompatible uses. When these natural features are absent, the Land Use Plan supports the creation of buffer yards with increased setbacks containing landscaping and berming to improve the separation of incompatible uses. » Development should be commensurate with the ability of the city to provide services. Areas, where services are available, should be developed before services are extended to new areas. » Development should be sought to provide adequate internal street linkages. Growth should be directed so as to make efficient use of the existing road system. Developments should be planned to avoid running high traffic volumes through residential neighborhoods. » Areas outside the MUSA shall be preserved as agricultural zones or used to support very low-density development. This area should not be prematurely developed, and the city will discourage the creation and/or expansion of commercial and industrial facilities in this area. City of Chanhassen 2040 Comprehensive Plan7 » City services shall not be extended to existing large lot subdivisions without city sewer or water even when they are in the MUSA until the majority of residents request that the city extend its service lines or public health issue arise. In these subdivisions, the smallest permitted lot is 2 1/2 acres. New lots meeting the 2 1/2 requirement may be created, assuming there is a suitable location for septic and well or the availability of city services. » A comprehensive and up-to-date set of ordinances shall be maintained to ensure high-quality developments consistent with the Comprehensive Plan. Ordinances shall be reviewed and modified as necessary to improve the quality of new development and ensure they incorporate high-quality design, landscape, etc. » Chanhassen will work with other jurisdiction to combine resources. This includes coordinating and collaborating with cities, counties, Southwest Metro Transit, school districts, and the state on projects of mutual interest such as libraries, public works, collective waste management, arts, transit, recreation, etc. Goal 2 Promote the preservation and protection of valuable historic and cultural resources through community partnerships and collaborations with citizens, non-profits, state, federal, public and private entities. Policies » Inventory the city’s historic assets. » Utilize opportunities to educate students and residents about the historical assets of the city. » Assume a leadership role by identifying historic resources within our community and educating the public on the historic value of a site or structure. » Encourage the preservation of scarce, non-renewable historic resources. » Develop and maintain a list of historic sites and structures within the city. » Develop and maintain an interactive website link of historic inventory between the city and the county. » Encourage the preservation and adaptive reuse of structures of historic and architectural significance. » Incorporate historic sites into new subdivision or developments where possible. » Utilize available historical photographs, maps and artifacts in public buildings to focus attention upon the city’s history and historical assets. » Encourage development of buildings that complement historic buildings. » Encourage property owners to apply for historic designation. » Recognize structures on a voluntary basis. » The City of Chanhassen will rely on Carver County to be the Historic Preservation Organization. » Properties requesting a historic designation or funding will be directed to Carver County Historical Society. » The city will not actively pursue the acquisition of historic sites or structures. 1.7.2 | Housing Goal 1 Provide housing opportunities for all residents, consistent with the identified community goals: » Balanced housing supply with housing available for people of all income levels. » Accommodation of all racial and ethnic groups in the purchase, sale, rental, and location of housing within the community. » A variety of housing types for all people in all stages of the life cycle. » A community of well-maintained housing and neighborhoods, including ownership and rental housing. » Housing development that respects the natural environment of the community while striving to accommodate the need for a variety of housing types and costs. » The availability of a full range of services and facilities for its residents, and the improvement of access to a linkage between housing and employment. Policies » Continue to enforce the City Code regarding property maintenance to maintain the existing housing stock. » As state and federal funding permits, efforts should be made to provide low and moderate housing where needed, to provide balance to the generally high cost of new housing. City of Chanhassen 2040 Comprehensive Plan8 » The city should promote the use of state and federal programs to reduce land costs for developers of low and moderate-income housing. » The city will cooperate with other governmental units and public agencies to streamline, simplify, and coordinate the reviews required for residential development to avoid inflating the cost of housing due to unnecessary delays in the review process. » The city will continue to encourage the development of affordable housing; the city may increase the permitted net density of a project by 25 percent. The “bonus” units must meet affordable housing criteria as defined by the city. Developers shall be required to enter into an agreement ensuring the affordability of the units. » Subsidized housing should be given equal site and planning considerations to non-subsidized housing units and should not be placed in inferior locations or in areas that do not provide necessary urban services including transit and commercial services. » The city will continue to provide alternative types of homes including smaller lot homes, townhouses, etc. that will supplement the conventional single-family homes. » New residential development shall be discouraged from encroaching into natural resources or physical features. » Housing development methods such as PUDs, cluster development, and innovative site plans and building types, should be encouraged to help conserve energy and resources for housing. » Citizen participation in developing plans and implementing housing programs is encouraged in redevelopment, rehabilitation and in planning for the future. » While density is given by a range in the Comprehensive Plan, the city shall encourage development at the upper end of the density range. » The city will promote the mixing of housing densities within projects in order to provide a wide range of housing styles and types. Such mixed densities must provide appropriate transitions for existing development. » The city will continue to participate in the Livable Communities Act of 1995 as stated in the Housing Plan. » The city will promote the integration of life-cycle housing opportunities throughout the community. Affordable and subsidized housing shall not be overly concentrated in one area of the city. 1.7.3 | Natural Resources Goal 1 The city recognizes the importance of its natural environment to the quality of life for its citizens and the need to protect and enhance these resources. Policies » Preserve natural slopes wherever possible. » Seek to connect natural areas whenever possible. » Preserve wooded areas, plant communities and native habitat whenever possible. Goal 2 Provide information and educational resources to improve knowledge and promote an active public role in the management of natural resources. Policies » Identify and provide information on invasive species on public and private lands. Revise city ordinance to include non-herbaceous and/or non-terrestrial invasive species as identified by the State. » Establish and implement ongoing programs designed to educate landowners in sensitive water quality management practices and develop and maintain a public education program to promote the reduction of nutrient and sediment loading into water bodies » Encourage residents and landowners to practice environmentally friendly lawn care and housekeeping practices, and to use native plantings or natural landscapes rather than turf lawns, where appropriate. Encourage the reduction in irrigation use. Promote the City of Chanhassen’s Water Wise Program. » Continue to provide opportunities for public involvement (e.g., neighborhood meetings, public hearings, mailed notices, etc.) for significant water and natural resource decisions or projects. » Coordinate and consult with the City Council and appropriate city commissions and committees on surface water and forestry issues. » Communicate with nurseries and garden centers, lake associations and other appropriate civic and citizen groups. City of Chanhassen 2040 Comprehensive Plan9 » Actively implement the current educational programs and work to develop and implement new education programs and activities related to natural resources. These programs will use a variety of media including use of notices, mailings, local cable television, newsletters, articles, websites, social media, workshops and/or presentations to inform and educate the public. » Cooperate with the other agencies and encourage the establishment of model interpretative sites for public education. Goal 3 Minimize soil erosion and sedimentation. Policies » Continue to implement the erosion and sediment control policies and the construction site inspection program to ensure reduction of water quality impacts from lack of erosion and sediment control. » Minimize disturbances to existing vegetation (trees, turf grass, native vegetation, etc.) Goal 4 Preserve and protect a variety of natural environments. Policies » Continue to work with the Riley-Purgatory-Bluff Creek Watershed District in implementing the Bluff Creek Natural Resource Plan. Use the plan to guide future development in protecting natural resources in the Creek corridor. » Seek to connect greenways throughout the city. Identify possible connections that can be made at the time of development. Goal 5 Increase overall tree cover in Chanhassen. Policies » Promote tree planting throughout the community through education, boulevard plantings and subsidized purchases for residents. Increase canopy cover on private and public lands to meet a minimum standard of 50 percent overall canopy coverage. » Encourage plantings of shade trees. » Adopt a public improvement landscaping policy which states that trees and landscaping will be incorporated in all public improvement projects and boulevard trees will be included in all street improvement projects, where appropriate. » Implement a tree cover analysis for the city to define tree cover needs and strengths. Goal 6 Maintain a healthy and diverse urban forest. Policies » Maintain a public tree inventory data in the city’s GIS database. Update as available with all planting and management activities. » Develop a Forestry Management Plan by identifying strategies or means to achieve the objectives of a safe, healthy, diverse and functional urban forest. The plan will be written to serve the city as a tool to protect, preserve and enhance its forest resources. » Maintain current ordinances designed to protect trees. » Continue to maintain a diversity of species in all public tree planting projects. At a minimum, use the 30-20-10 rule to select trees for projects. » Continue to update the Approved Tree List as needed in the City Code. Goal 7 Restore, protect and improve natural communities through proper management techniques. Policies » Identify significant wooded areas to protect. Preserve areas by means of development restrictions, density transfers, preservation easements, purchase or other methods. » Develop Natural Resources Stewardship Plan that would identify, prioritize and recommend restoration and management strategies for all public natural areas. » Preserve existing landscape features, such as pond plants, standing dead trees and downed trees, in natural communities. » Protect areas identified as endangered species habitat. Increase public land areas for pollinator habitat. City of Chanhassen 2040 Comprehensive Plan10 Goal 8 Encourage resiliency planning that mitigates and adapts to climate changes. Policies » Develop Best Management Strategies to help plan for weather-related impacts to our community. » Strive to increase energy and water efficiency in all public buildings. » Become certified as a GreenStep City. Goal 9 Support residential and business solar development that maintains community character. Policies » Amend the city code to include the following items pertaining to solar energy: definitions, permitted uses and plans, access to sunlight. 1.7.4 | Parks & Open Space The System Plan’s goals and policies are high-level statements intended to guide city decision-making over the next 20 years. The six goals represent the desired long-term outcomes of Chanhassen’s System Plan and were prepared as depictions of how the Parks and Recreation System will function when the guiding principles are achieved. To guide city decision-makers, the general characteristics of each goal are described by a series of policies. Goal 1 Provide a comprehensive system of the park, recreation and open space facilities to serve active and passive needs. Policies » Provide a system that includes neighborhood parks, community parks, preserves and special use parks based on the standards outlined in Table 5-1. » Ensure residents have convenient access to park and recreation facilities at the neighborhood and community park level by ensuring all residents are within a ½ mile of a neighborhood park and 2 miles of a community park. » Provide a mix of athletic complexes with user amenities to meet the needs of recreational, league and tournament play. » Provide user amenities as appropriate for the type of park: » To serve local users walking or biking to their neighborhood park, provide user amenities like benches, bike racks, shade trees, trash and recycling receptacles, and seasonal restrooms. » To serve the community and regional users, provide at community parks amenities like benches, picnic tables, bike racks, information kiosks, shelters, permanent restrooms, trash and recycling receptacles, and access to technology. » Balance the use of the park and recreational facilities for local needs with events, tournaments, gatherings, and programming. » Support year-round recreation through a mixture of indoor and outdoor facilities » Explore opportunities to expand the number and quality of the community’s preserves to protect natural areas that are ecologically sensitive or representative of the city’s natural heritage. » Provide areas for small and large group community gathering through the distribution of shelters in neighborhood and community parks. » Seek opportunities to distribute separated, 2 to 5-year-old playgrounds throughout the community. Goal 2 Maintain a comprehensive and easily navigable trail and sidewalk system that connects neighborhoods to park and recreation facilities, schools, community destinations and other communities. Policies » Prioritize the elimination of trail gaps based on safety, connectivity, and cost. » Create trails within preserves. » Improve the trail user experience through improved maintenance, wayfinding and amenities (i.e. benches, trash cans, etc.). » Establish trails and sidewalks as a key transportation network in new development. City of Chanhassen 2040 Comprehensive Plan11 » Explore opportunities to expand the trail and sidewalk system through neighborhoods to enhance connections to surrounding amenities. » Prioritize the construction of grade-separated crossings of roads for trails based on safety, demand and need warrants. » Preserve vacated or abandoned right-of-way for trail purposes. » Collaborate with local and regional agencies on the establishment of regional trails. » Partner with surrounding communities to create inter-community trail connections that enable users to travel to surrounding communities and regional trails without having to ‘jump’ between different trails and sidewalks. Goal 3 Ensure all residents have the opportunity to participate in recreation, education, cultural and arts activities. Policies » Strive to offer a diversity of programs at a variety of times to serve all age groups. » Explore art, culture and nature-based programming and partnerships to serve non-athletic community needs. » Program and support partners’ events to draw residents to park and recreation facilities. » Encourage, partner with, and support existing associations, clubs and groups to fill programming gaps that the city cannot fill. » Expand partnerships with local schools to serve community needs. Goal 4 Be a leader in environmental sustainability. Policies » Preserve remaining natural areas as opportunities arise. » Support park users’ efforts by offering recycling and/or composting. » Manage the use of pesticides within parks. » Explore opportunities to convert existing turf areas to native plantings. » Reduce impacts on lakes, waterways and groundwater by incorporating stormwater best practices in park and facility design. » Use sustainable building practices when developing, expanding or renovating facilities. » Improve energy efficiency when renovating or constructing new facilities. » Use native trees/shrubs planted in appropriate locations to conserve energy. » Raise public awareness of the importance of sustainability and the city’s efforts through social media, interpretation and educational programming. Goal 5 Proactively plan for a high quality, efficient parks and recreation system that meets community needs. Policies » Encourage parks to be defining features of neighborhoods through the placement of parks in a visible location and the establishment of connecting trails and sidewalks. » Encourage participation by neighborhoods, community groups and local artists in the planning for and development of park and recreation facilities. Identify locations for unique features or improvements to avoid a system of “cookie cutter” parks. » Enhance users’ experiences through well-designed exterior environments/places that give consideration to how all members of the public can engage in these spaces in different ways (educational, cultural, performance, artistic, etc.), how places can be interconnected throughout the community, and how lighting contributes to inviting spaces. As part of the design process, seek opportunities to use artist-created park features rather than standard catalog pieces. » Encourage the use of the park system for performance art, temporary art installations, and public art. » Explore opportunities to reconfigure or improve efficiencies within existing parks to serve identified community needs. » Maintain and routinely review field management plan to ensure high-quality fields through rotational resting of fields based on a schedule/level of use and postponement of use during and after significant rain events. » Continue strong partnership and communication with local associations, clubs and other organizations to ensure facilities are meeting their needs. City of Chanhassen 2040 Comprehensive Plan12 » Integrate trails into the planning and design process for public improvements and land development. » Design parks and facilities to address active and passive needs while giving consideration to the environmental context, surrounding land uses and future maintenance and operational needs. » Establish and routinely update sustainable operations, maintenance and replacement schedule for all parks and facilities with particular attention on playgrounds, basketball courts, tennis courts, Pickleball courts, shelters, etc. » Collaborate with the Engineering Department on trail pavement management program. » Explore partnership opportunities for capital improvement costs and life-cycle system costs. » Continue to support the stated goal of parks in Chanhassen to reasonably meet city needs and promote a sense of community: » Expand the capacity of the athletic facilities through improvements and efficiencies within existing community parks. Goal 6 Implement strategies to increase the city’s capacity to maintain and expand the parks and recreation system. Policies » Identify and expand partnerships with area recreation associations, clubs and groups; local businesses; private organizations; neighborhood groups; and other public agencies. » Utilize our facilities to capitalize on opportunities to generate revenue. » Evaluate options to expand the use of volunteers to support park operations and programming. » Explore seeking voter approval to issue bonds or levy a tax to expand or support the needs of the park and recreation facilities and system. » Encourage property owners interested in donating or granting conservation easements on their land. 1.7.5 | Transportation Goal 1 To create an integrated, multi-modal transportation system which permits safe, efficient and effective movement of people and goods while supporting the city’s development plans, and complementing the metropolitan transportation system that lies within its boundaries. Policies General » Thoroughfares and major routes should be planned so as to reduce conflicts between external traffic and local traffic while facilitating development in the community. » Through the development review process, the City will strive to discourage development from occurring within the designated road way corridors as well as limiting access to collector streets, minor arterials, intermediate arterials and principal arterials. Access points to the regional roadway system should be adequately controlled in terms of driveway openings and side street intersections. » Promote safe and convenient access connections between the highway system and major commercial areas, industrial uses and residential neighborhoods. Roadways » Encourage multiple uses of right-of-way areas accommodating various modes of transportation. » New roadway facilities should be constructed in conjunction with new developments and designed according to the intended function. They should be planned and designed to be compatible with the surrounding environment. » Existing roadways should be upgraded when warranted by demonstrated volume, safety or functional needs. Roadways shall also be maintained and repaired to ensure the greatest possible useful life. » Residential street systems should be designed to discourage through traffic and to be compatible with other transportation modes including transit, bicycle and walking. » The city will implement roadway design standards and inspection practices which ensure proper construction. » Streets shall be designed and operated to enable safe access for all users, including pedestrians, bicyclists, motorists and transit riders of all ages and abilities. City of Chanhassen 2040 Comprehensive Plan13 Transit » The city encourages all forms of ridesharing in order to reduce vehicle miles of travel, reduce petroleum consumption and improve air quality. » The city will review all major new developments in light of the potential for ridesharing including bus accessibility, preferential parking for carpools/vanpools and mixed-use development. » The city will support Federal, State, Metropolitan and local efforts directed toward the provision of rail transit for the community, the region, and the state. » The city encourages cooperation with the Metropolitan Council and Southwest Transit Commission in order to provide future transit service to and within the community. The city will support the development of a park and ride facilities that encourage transit use. Parking » The city will continue to review new developments for adequacy of parking based upon need and the potential for joint use of parking facilities. » Sufficient parking, transfer and bus stop facilities should be provided to meet the needs of mass transit in major employment and commercial areas and in higher density residential and mixed-use areas. Pedestrian/Bicycle » Major activity centers should provide accessibility to pedestrians and bicycles including necessary bicycle parking facilities. » The city will promote increased development of bikeways and trail facilities in order to conserve energy resources, enhance recreational opportunities, improve health and assist in the abatement of pollution and congestion. » Pedestrian and bicycle trails should be interconnected with major generators and have continuity across major roadways and other barriers. » Sidewalks and/or trails should be required in commercial, industrial and residential areas; adjacent to schools and other public buildings and along at least one side of collectors and other high volume roads. Other Mapped Road System The city will utilize the land use plan and transportation plan maps to illustrate planned road alignments and to facilitate their acquisition and construction as new developments are proposed. The plan maps will illustrate all collector and arterial street alignments. They will also be revised from time to time by the city during the subdivision review process. Subdivisions As a part of platting, each development should provide dedication and improvement of public streets consistent with the standards found in city ordinances. The city will promote the provision of street and pedestrian connections to maximize safety and ease of access. Buffer Sufficient setbacks and/or berming should be designed into all development projects adjacent to major public roadways. Capacity Coordinate existing and planned transportation facilities and their capacities with land use types and densities with particular emphasis on land development in the vicinity of interchanges and intersections. Maintenance The city will continue an ongoing maintenance program in order to maximize the community’s investment in transportation facilities. Circulation For proposed developments, the city will require detailed circulation and access plans which depict the impact of the proposed develop- ment on both the existing and future transportation systems. Arterial Deficiencies The city will support Federal, State, Metropolitan and local efforts directed toward the timely construction of a new Minnesota River cross- ing connecting Trunk Highways 169 and 212, upgrading of TH 5 west of TH 41, realignment and construction of TH 101 south of Pioneer Trail, upgrading of TH 101 north of TH 5, TH 41, and other facilities serving the area. City of Chanhassen 2040 Comprehensive Plan14 Chanhassen will coordinate efforts with Eden Prairie, Victoria, and other appropriate jurisdictions to ensure that TH 5 and 101 continue to function effectively. Construction and Maintenance Chanhassen will coordinate the construction and maintenance of hard surfaced local streets, collectors, and arterials. Interconnect Neighborhoods It is the city’s policy to require interconnections between neighborhoods through the construction of local streets to foster a sense of community, to improve safety, encourage health and to provide a convenient access for residents. 1.7.6 | Sewer Goals and Policies The timing of future trunk sanitary sewer improvements will be influenced by several parameters including development pressures in specific areas, failing on-site septic systems, regulatory requirements, availability of funds, etc. As a result, it is difficult to accurately pre- dict the time of future improvements especially those which may occur far into the future. Therefore, the Capital Improvement Program is intended to serve as a guide only for future fiscal planning and should be reviewed on a regular basis as more current planning and cost data becomes available. The city shall: 1. Adopt the Comprehensive Sanitary Sewer Plan for the City of Chanhassen. 2. Review and update the CIP annually for trunk sanitary sewer facilities to reflect sewer improvement projects necessary for the next five-year period. 3. Proceed with future sanitary sewer improvements in accordance with the initial 5- year capital improvement program. 4. Continue to reduce I/I to the existing collection system and maintain provisions for preventing I/I from entering the sanitary sewer system with new construction. The following items are general policy guidelines to be considered when reviewing and/or revising the city’s fee structure: 1. System Expansion (Orderly Development) Development shall occur in an orderly fashion. Properties that abut parcels served by municipal utilities will be considered as the next feasible property for development. The city may limit development activities to selected areas. Petitions to expand in areas not already under development will be considered. Factors that will be considered include, but are not limited to: capacity in the MCES interceptor, capacity in the city’s collection system, economic factors including costs, number of developments under construction and the staff resources available to review the requested development. 2. Leapfrogging Leapfrogging refers to the circumstance where certain parties want to develop an area not currently adjacent to the limits of the City of Chanhassen’s existing sewer system. The applicant wants to “leapfrog” over areas located adjacent to the city’s existing services that would be the next logical area to be developed. In this circumstance, the City of Chanhassen could decide whether or not to approve such development. If approved, it is recommended that the interested property owner pays for the entire cost of installing services to their property and resulting system up- grades. The developer shall be offered no credit or reimbursement for these costs. If the development of the property that was “leapfrogged” is later initiated, payment of all trunk charges for the property will still be required regardless of the fact that the facilities were already installed before development occurred. 3. Overdepth and Oversizing The costs of additional depth shall be defined by differences in cost for the depth required by the development and the depth required for trunk facilities. Trunk oversizing as defined by the city and installed by the developer will be credited using the differential of pipe costs between the larger and the minimum pipe size required for the develop- ment. Bid pricing shall not be the sole determinate in defining a developer credit. The city shall determine if a credit will be given for a project. City of Chanhassen 2040 Comprehensive Plan15 3. Overdepth and Oversizing The costs of additional depth shall be defined by differences in cost for the depth required by the development and the depth required for trunk facilities. Trunk oversizing as defined by the city and installed by the developer will be credited using the differential of pipe costs between the larger and the minimum pipe size required for the develop- ment. Bid pricing shall not be the sole determinate in defining a developer credit. The city shall determine if a credit will be given for a project. 4. Lift Stations Trunk lift stations should be defined as those servicing more than one single development project. The trunk fees will pay for 100 percent of the cost of trunk lift stations. Lift stations that do not fit the definition for a trunk lift station are to be paid for by the developer. All lift stations shall be designed and constructed in accordance with city standards. The city will consider cost sharing for other lift stations if it is found that a particular lift station may be able to serve a greater area than the single development. The cost-sharing shall include the oversizing or over depth required to serve additional area and associated SCADA system costs to establish the lift station on the city’s SCAD A system. 5. Existing Developed Unserviced Properties There are a number of existing developed areas that do not receive sewer and water service within the city limits. The trunk system has been designed to handle all existing developed unserviced properties within the city, but it is not the policy of the city to initiate a sewer extension project. If an individual property owner or group of neighbor- ing property owners would like city sanitary sewer services where it is not yet available, the city will review whether or not it is economically viable. Existing developed, unserviced residential properties will be assessed or required to pay connection fees as required by the City Code. 6. Existing Non-Residential Unserviced Properties Existing unserviced commercial/industrial or other non-residential properties wishing to expand or hookup to mu- nicipal utilities shall be treated the same as new development and will be assessed or required to pay connection fees as required by the city. 1.7.7 | Water Goals and Policies The city shall provide potable water in an efficient and effective manner. 1. Supply Improvements Firm supply capacity (the supply capacity with the largest pump out of service) should be greater than maximum day demands. The city is currently in the midst of constructing the west water treatment plant, which is estimated to have a capacity equal to the recently constructed east water treatment plant (6,000 gpm). In order to fully utilize these two plants, it is estimated that four new wells will be necessary during the life of this plan to meet projected water demands based on projected development in the city. 2. Distribution System Improvements Trunk main looping should be a priority in the expansion of the service area and in water main replacement projects. The proposed layout of trunk water mains in this report would provide water supply and fire protection capabilities to existing and projected service areas. In addition, recommended trunk mains will connect water supply and storage facilities with points of use on the system. The city can also work towards the eventual combination of the Lake Riley and Interbluff pressure zones, which may be the most ideal location for a new elevated storage tank. City of Chanhassen 2040 Comprehensive Plan16 3. Storage Improvements The volume of water storage needed in Chanhassen is dictated by daily demands as well as fire protection. Currently, storage capacity is meeting system needs. Projected demands will create a need for one additional 1.0 MG elevated water storage tank over the life of this plan. A new concept, which places a new tank in the combined Lake Riley/Interbluff lower pressure zone which will help supply these pressure zones with water as well as stabilize system pressures. 4. Report and Model Update This report should be reviewed on an annual basis. Changes in development type or densities can have significant impacts on a water system’s performance, especially during drought conditions or emergencies such as fires. A re- port update should be planned for approximately 5 to 10 years dependent on development pressure. The water system model produced as part of this project is a valuable tool in assisting with the design and construc- tion of Chanhassen water system components. It can be easily updated on an annual basis and used to evaluate the impacts of proposed developments or project phasing. A copy of the computer model will be provided to the city. 1.7.8 | Surface Water The Local Water Management Plan (LWMP) was prepared in conformance with the Minnesota Statutes 103B.235 and Minnesota Rules 8410. This plan is intended to provide the City of Chanhassen with information and direction in the administration and implementation of water resource management activities within the city during the period 2018-2027. It serves as a guide to projects, provides for the effective allocation of resources, and sets forth a funding plan for projects and programs over the next 5 to 10 years. The city will adopt by reference the local 2018 - 2027 surface water management plan (LWMP) and will incorporate the six water resource goals as specified in the LWMP. Goal 1 Promote abstraction through infiltration, reuse and other methods where practicable to do so to provide flood protection, groundwater recharge and improved water quality. Goal 2 Achieve water quality standards in lakes, streams and wetlands consistent with their designated uses and established classifications. Goal 3 Protect and rehabilitate wetlands to maintain or improve their function and value. Goal 4 Prevent contamination of the aquifers and promote groundwater recharge to maintain base flows in streams and wetlands. Goal 5 Maintain primary responsibility for managing water resources at the local level and continue coordination and cooperation with other agencies and organizations. Goal 6 Provide information and educational resources to improve knowledge and promote an active public role in the management of water resources. City of Chanhassen 2040 Comprehensive Plan17 City of Chanhassen 2040 Comprehensive Plan18 Chapter 2LandUse City of Chanhassen 2040 Comprehensive Plan19 2 | Land Use 2.1 | Introduction The purpose of the land use plan is to ensure the community’s quality of life by identifying appropriate locations for all types of uses and provide for the orderly expansion of municipal services through the Metropolitan Urban Service Area (MUSA) phasing plan. The land use plan creates the framework that guides zoning and subsequent land use decisions. This plan establishes the guidelines that the City Council, Planning Commission, and Parks and Recreation Commission use to make decisions on individual development requests, especially those that involve zoning and land use amendments. 2.2 | Development Influences Lakes, wetlands, and woods define Chanhassen. Natural resources such as the sensitive water resources contained within Assumption Creek, Seminary Fen, and the wetlands associated with the Minnesota River are especially im- portant. The city’s 350 wetlands occupy over 2,370 acres, nearly 15% of the city’s total area. Additionally, the city has 12 mapped lakes covering 1,526 acres, and storm water ponds account for another 78 acres of aquatic habitat. The city is also home to the headwaters several major streams including Bluff Creek, Riley Creek, and Purgatory Creek. Cumulatively, surface water features account for 4,269 acres of the city’s surface area. Many of the city’s parcels either take advantage of or are impacted by these water resources. The city is bordered by the Minnesota Landscape Arboretum to the west and the Minnesota River to the south. The community’s northern boundary is predominately low-density residential housing. Surrounding Chanhassen are the communities of Shorewood, Minnetonka, Victoria, Shakopee, Chaska, and Eden Prairie. To the east, Minnetonka, Eden Prairie, and Shorewood are almost entirely developed, and Chanhassen expects to see continued growth in all land use sectors. One of the biggest factors influencing growth in the southern section of the city is the anticipated upgrades and re- alignment of Highways 101/61. In 2014, the City of Chanhassen commissioned a study to investigate the feasibility of extending city utilities to the County Road 61 corridor. This area encompasses 1,430 acres and includes numerous pro- tected areas including the Bluff Creek Primary Zone, the Seminary Fen Scientific and Natural Area, and the MN Valley National Wildlife Refuge. Once these areas are removed from consideration only 12% of this region is developable. Despite these constraints, the study determined that ex- tending utilities to the area was feasible, and the city has guided these properties for the uses and densities neces- sary to ensure that they achieve the highest and best use possible while being responsive to the area’s unique natu- ral setting. The city’s goal is to create an attractive south- ern gateway to the city along this corridor. Development within this area will be contingent upon the extension of city services into this area, which is itself contingent upon the realignment of Highway 101. Upon completion of the study the land use amendments were approved by the Metropolitan Council in February of 2015. City of Chanhassen 2040 Comprehensive Plan20 FIGURE 2-1. A | Highway 61 Corridor Original Land Use Guiding FIGURE 2-1. B | Highway 61 Corridor Revised Land Use Guiding City of Chanhassen 2040 Comprehensive Plan21 2.3 | Growth Forecast The purpose of the land use plan is to ensure the community’s quality of life by identifying appropriate locations for all types of uses and provide for the orderly expansion of municipal services through the Metropolitan Urban Service Area (MUSA) phasing plan. The land use plan creates the framework that guides zoning and subsequent The Metropolitan Council forecasts that the city will add 4,000 households and 2,800 jobs between 2020 and 2040. The Metropolitan Council has designated the city as an Emerging Suburban Edge. The density requirements for this designation are overall average net densities of at least 3-5 dwelling units per acre in forecasted growth through 2040. Source: Metropolitan Council Chanhassen Regional Development Forecast Category Census Revised Forecast 2010 2020 2030 2040 Population 22,952 26,700 31,700 37,100 Metro Sewered 20,576 24,320 29,330 34,720 Households 8,352 10,000 11,900 14,000 Metro Sewered 7,519 9,170 11,070 13,170 Employment 10,905 15,600 17,000 18,400 Metro Sewered 10,662 15,400 16,800 18,200 FIGURE 2-2 | Growth Forecast City of Chanhassen 2040 Comprehensive Plan22 FIGURE 2-3 | City of Chanhassen Community Designation Source: Metropolitan Council City of Chanhassen 2040 Comprehensive Plan23 Staff anticipates that these new housing units will be fairly evenly split between low, medium, and high-density residential districts, with residential mixed-use developments providing a relatively modest share. The average density of past developments has been used to estimate the expected density for future developments. Using these numbers, staff believes that land guided for residential development will provide approximately 3,900 housing units with an average density of 3.93 units per acre. Some additional housing units will likely be created through infill and redevelopment within existing residential developments; however, the vast majority of new housing units between 2020 and 2040 are expected to be provided through new developments. For example, staff projects that downtown redevelopment will add approximately 200 housing units and the newly approved Avienda Lifestyle Center is pro- posing 800 new units. It is expected that the areas to the west of Lakes Lucy and Ann will develop between 2020 and 2030, as will the areas with easy access to Highway 212. Development of the southern portion of the city, especially those along the CSAH 61 corridor and abutting the section of Highway 101 south of CSAH 14 are not expected to develop until after roadway improvements occur and the extension of municipal services become feasible. The recently approved Avienda lifestyle center will facilitate a significant percentage of the projected job growth as its commercial and office subsectors build out between 2020 and 2030. The remainder of the land guided for commercial, office, or industrial uses will develop as market conditions allow, with areas readily serviced by existing municipal infrastructure expected to develop before those in the southern portion of the city. FIGURE 2-4 | Net Developable Residential Acreage 2020-2040 Class Acres Avg. Density Units Low Density Residential 671 2 1342 Medium Density Residential 186 6 1116 High Density Residential 118 10 1180 Mixed Use (Residential)19 14 266 Totals 994 3.93 3904 City of Chanhassen 2040 Comprehensive Plan24 FIGURE 2-5 | Potential Development Timeline CITY OF CHANHASSEN Potential Development Timeline City of Chanhassen 2040 Comprehensive Plan25 Existing and Planned Land Use Table (in acres) Minimum Maximum Residential Land Uses Low Density Residential (developed)1.2 4 3,829 3,900 4,175 4,451 4,605 4,721 892 Low Density Residential (vacant)881 791 516 256 102 (150) Medium Density Residential (developed)4 8 300 313 349 387 452 517 217 Medium Density Residential (vacant)199 186 150 112 47 (18) High Density Residential (developed)8 16 68 99 130 161 206 250 182 High Density Residential (vacant)149 118 87 89 44 (33) Mixed Use Primarily Residential* (developed)8 20 27 39 47 54 56 58 31 Mixed Use Primarily Residential* (vacant)31 19 11 4 2 - C/I Land Uses Commercial (developed)206 215 252 290 309 328 122 Commercial (vacant)122 113 76 38 19 - Industrial (developed)646 752 762 773 808 905 259 Industrial (vacant)259 153 143 132 97 - Office (developed)53 62 100 108 147 187 134 Office (vacant)153 153 87 79 40 - Mixed Use Primarily C/I* (developed)30 38 52 67 77 86 56 Mixed Use Primarily C/I* (vacant)56 48 34 19 10 - Extractive - Public/Semi Public Land Uses Institutional 1,204 1,204 1,204 1,204 1,211 1,211 7 Parks and Recreation 438 457 468 478 481 491 53 Open Space 944 944 1,301 1,301 1,301 1,301 357 Roadway Rights of Way 1,237 1,237 1,237 1,237 1,252 1,411 174 Utility - Railroad - Airport - Subtotal Sewered 10,832 10,841 11,181 11,240 11,265 11,265 2,484 Outside Urban Service Area Minimum lot size Maximum lot size 2015 2020 2025 2030 2035 2040 Change 2015-2040 Large Lot Residential 2.5 na 948 948 948 948 948 948 - Agriculture land use 891 882 577 518 493 493 (398) Subtotal Unsewered 1,839 1,830 1,525 1,466 1,441 1,441 (398) Undeveloped Wetlands (within land use designations)----2,089 2,089 2,089 2,089 2,089 2,089 - Open Water, Rivers and Streams ----2,059 2,059 2,059 2,059 2,059 2,059 - Total 14,760 14,760 14,795 14,795 14,795 14,795 35 Change 2015-2040201520202025203020352040 1/400 Allowed Density Range Housing Units/Acre Est. Employees/Bldg. Sq. Ft. Within Urban Service Area 1/500-1/750 1/300 1/400 FIGURE 2-6 | Land Use Table in 5-Year Stages, Existing, and Planned Land Use In Actions City of Chanhassen 2040 Comprehensive Plan26 FIGURE 2-7 | 2015 Land Use Table 2.4 | Land Use Comparisons FIGURE 2-8 | 2020-2040 Land Use Comparisons Land Uses as of 2015 Category Acres Percent Commercial 328 2.22% Office/Industrial 843 5.71% Office 277 1.88% Mixed Use 144 0.98% Parks & Open Space 1,382 9.36% Public/Semi-Public 1,204 8.16% Residential Large Lot 948 6.42% Residential Low Density 4,710 31.91% Residential Medium Density 499 3.38% Residential High Density 217 1.47% Agriculture Land Use 882 5.98% Roadway Rights of Way 1,237 8.38% Wetlands 2,089 14.15% Total 14,760 100.00% 2020 2030 2040 Land Use Plan Land Use Plan Land Use Plan Change 2020- 2040 Acres Percent Acres Percent Acres Percent Acres Commercial 142 1.2%328 2.2%328 2.2%186 Office/Industrial 694 5.7%883 6.0%905 6.1% 211 Office 114 0.9%339 2.3%187 1.3% 73 Parks & Open Space 1,297 10.6%1,410 9.6%1,787 12.1% 490 Public/Semi-Public 1,204 9.9%1,204 8.2%1,211 8.2%7 Residential Large Lot 870 7.1%971 6.6%950 6.4%80 Residential Low Density 3,295 27.0%4,707 31.9%4,721 32% 1,426 Residential Medium Density 219 1.8%400 2.7%517 3.5% 298 Residential High Density 120 1.0%218 1.5%250 1.7% 130 Mixed Use 51 0.4%115 0.8%143 1.0%92 Undevelopable 4,200 34.4%4,185 28.4%3,796 25.7% (404) TOTAL 12,206 14,760 14,795 2,589 Undevelopable Lakes, Floodplain, Rivers, Streams 2,059 2,059 Road Right-of-Way 1,244 1,244 Agriculture 882 493 TOTAL 4,185 3,796 City of Chanhassen 2040 Comprehensive Plan27 2.5 | Residential Land Uses Within the current MUSA, density ranges are those specified for the land use. Outside of the MUSA, the overall density limit is one unit per 10 acres. It is the city’s policy not to create additional lots that do not have access to municipal services. 2.5.1 | Residential – Large Lot Properties in this district are predominately large-lot estates or, more rarely, agriculturally oriented dwellings. These large-lot residential areas are generally clustered south of Pioneer Trail; however, other concentrations exist north of Trunk Highway 5, east of Galpin Boulevard along Lake Lucy Road, and south of Trunk Highway 5, east of Galpin Boulevard along Timberwood Drive. Large-lot residential developments are intended to have a rural character and are subject to 2.5-acre minimum lot size. The city saw a proliferation of large-lot residential subdivisions in 1987 as developers rushed to subdivide before the current one unit per ten-acre density limit went into effect. Given the one unit per-ten acre density limit, there are very few properties that could subdivide to create new large lot residential properties. It is unlikely that there will be a significant expansion of this land use category. For projecting land demand, an average of 0.4 net units per acre was used. The city anticipates that 0 acres of new development will occur at this density between 2020 and 2040. Large-lot residential is zoned as either A-2 (Agricultural Estate District) or RR (Rural Residential District). 2.5.2 | Residential – Low Density Most residential districts are comprised of low-density, single-family detached housing. Within this category, net densities range from 1.2 to 4.0 units per acres. For projecting land demand, an average density of two dwelling units per acre was used. The city anticipates that 671 acres of new development will occur at this density between 2020 and 2040. Low-density residential areas can be either zoned RSF (Residential Single Family), R-4 (Mixed Low Density), RLM (Residential Low and Medium Density), or PUD-R (Planned Unit Development Residential). City of Chanhassen 2040 Comprehensive Plan28 FIGURE 2-9 | Existing 2030 Land Use Map ( as of 8.16.2016 ) City of Chanhassen 2040 Comprehensive Plan29 FIGURE 2-10 | 2040 Land Use Map Sand y H o o k Road W82ndStWestL a ke Crt LakeS us a n D riveL a k o ta LaneSunset TrailSandyHook C irCheyen neBighornDrive HazeltineBlvd(Hwy41)Lyman Blvd (CSAH1 8 )MinnewashtaParkwayCircle JuniperAve.DogwoodRdSommer Gate RingneckDr.Pheasant Dr Hillsd a l e Crt S o u t h e r n C r t ForestRidgeCircleHawthorne ChaskaRoadMolineCirS te lle r Cir WhiteDoveDr Strat ton CrtCharing Bend H e a therCourtPowersBlvd(CSAH17)S addlebrookPass Trott ersCirTargetLaneKerberBlvdChippewaCir ChippewaTrailSan ta Ve ra DrSaratogaDr SaratogaCirSanta Fe Trail Sie r raT ra ilSierraCourt Sh a d owm e r e CanterburyCir R e d w in g C t . 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These develop- ments can include duplexes, townhouses, and lower density apartments or condominiums. This category allows for a net density of 4.0 to 8.0 units per acre. For projecting land demand, an average density of six units per acre was used. The city anticipates that 186 acres of new development will occur at this density between 2020 and 2040. The following zoning districts can fall within the medium-density residential area: R-4 (Mixed Low Density), RLM (Residential Low and Medium Density), R-8 (Mixed Medium Density), or PUD-R (Planned Unit Development Residential). Medium density areas are used to create transitional zones between low-density residential and com- mercial, office, or high-density residential areas. 2.5.4 | Residential – High Density The city’s highest density category provides for developments with a net density range of 8 to 16 units per acre, and it is typically used for apartments and condominiums. For projecting land demand, an average density of 10 units per acre was used. The city anticipates that 118 acres of new development will occur at this density between 2020 and 2040. Areas guided high density residential can be zoned R-8 (Mixed Medium Density), R-12 and R-16 (High Density Residential), and PUD-R (Planned Unit Development-Residential). High-density residential areas are locat- ed on major transportation corridors, typically near transit, commercial centers, and employment centers. 2.6 | Office Industrial Land Use Most of the city’s existing office/industrial parks are fully built out. The city has guided areas near the intersection of Arboretum Boulevard and Audubon Road, the intersection of Galpin Boulevard and Lyman Boulevard and the intersec- tion of Audubon Road and Lyman Boulevard for future development as office/industrial parks in order to meet antic- ipated demand. The city also uses PUD zoning and the intersection of Audubon Road and Lyman Boulevard to create dedicated industrial parks. Since 2008, the city has added over 400,000 square feet of industrial uses. Industrial uses are facilitated by the IOP (Industrial Office Park) and PUD (Planned Unit Development-Office/Industrial) zoning districts. 2.7 | Commercial Land Use Traditionally, the city has focused on directing commercial development into the Central Business District. This poli- cy has helped Chanhassen create and maintain a strong business community. However between the city’s growth and the realignment of Highway 212, the city has determined that there is a potential for significant commercial develop- ment outside of the downtown core. In order to take advantage of this opportunity, the city guided land for Regional Commercial use and is in the process of moving the Avienda regional lifestyle and mixed-use center through the approval process. This development will significantly increase the amount of commercial real estate in the city, and will create a second, complimentary, hub of commercial activity. Since 2008, the city has added over 300,000 square feet of commercial uses. 2.7.1 | Central Business District Definition/Vision: A compact walkable district featuring a wide variety of business, commercial, office, and residential uses providing a comprehensive range of services at higher development densities than are present elsewhere in the city. The Central Business District is a dense concentration of jobs, services, housing, and civic uses. The city’s highest density developments are located in the Central Business District. The scale of these developments is supported by infrastructure such as the Chanhassen Transit Station. City of Chanhassen 2040 Comprehensive Plan31 The proximity of numerous commercial and civic uses accessible by attractive walking paths draws shoppers, vis- itors, and residents to the area and promotes multiple trips between destinations. New developments in this district are encouraged to complement the existing mix of uses and to contribute to maintaining a vibrant and active district over the course of an extended day. Staff anticipates that redevelopment in this district will create approximately 200 new-dwelling units. Attention is also given to creating attractive and comfortable pedestrian links between varied uses within the district as well as promoting a sense of place. Goods and Services Examples: » Residential (High Density) » Office » Entertainment (Restaurants, Theaters, Music Venues) » Retail, Grocery, Household Goods and Services » Fitness Activities » Hotels » Health Services (Clinics) Zoning districts within this land use is CBD (Central Business District) or BH (Business Highway). Previously, the BG (General Business District) zoning district was used within the area; however, these areas were rezoned as CBD. The BG zoning classification is still the underlying zoning district for several PUDs within the Central Business District. 2.7.2 | Neighborhood/Convenience Commerical Definition/Vision: Neighborhood/Convenience commercial districts are intended to host business that provide the daily goods and services needed by residents or nearby employees. These districts are oriented towards smaller sites with direct access to collector streets and are preferably located close to intersections of collector or arterial roads. These land uses are scaled to be compatible with surrounding districts, which are typically residential. Neighborhood/convenience com- mercial uses should have a minimal impact on surrounding properties, as measured in terms of hours of operation, signage, and the noise, light, and odors generated. No single use in this district should exceed 10,000 square feet in gross built area. Goods and Services Examples: » Small to medium sized restaurants (no drive through windows) » Dry Cleaning » Neighborhood Scale Health/Fitness Services » Office » Day Care » Neighborhood Scale Convenience Store » Gas Stations » Personal Services The zoning application for this land use is BN (Neighborhood Business District) or PUD ( Planned Unit Development). 2.7.3 | Community and General Commercial Definition/Vision: Large-scale commercial and office districts requiring high visibility along arterial roads. This type of development has the capacity to generate enough light, noise, and traffic to have a moderate impact on the surrounding areas. City of Chanhassen 2040 Comprehensive Plan32 These developments are located in areas with access to arterial streets, preferably at intersections with collector and arterial streets, have moderate to large-sized sites, are within the MUSA, and have environmental features, such as soils and topography, suitable for compact development. These projects must have adequate buffering by physical features or adjacent compatible uses to protect nearby residential developments. Goods and Services Examples: » Furniture and Home Furnishings » Electronic and Appliance Stores » Building Material and Garden Supplies » Auto Parts and Accessories » Sporting Goods Suitable areas will be zoned CC (Community Commercial) to facilitate this land use. 2.7.4 | Regional/Lifestyle Center Commercial Definition/Vision: A regional destination featuring a highly walkable commercial core complimented by residential and office uses. A region center is a mixed commercial district with retail and entertainment uses of an appropriate scale to serve a regional market. The development should be designed to serve pedestrian and mass transit users along with auto- mobile users. Its design should create an attractive and comfortable walking experience for visitors and residents establishing a sense of place or destination. The center’s retail component should be integrated with its office and residential components, with mindful transitions between land uses. Goods and Services Examples: » Entertainment » Department Store » Comparison Shopping » Specialty Retail/Boutique » Restaurants » Hotels » Residential The city has guided 160 acres at the southeast corner of Powers and Lyman Boulevards as a potential regional/ lifestyle center. The city has recently approved PUD (Planned Unit Development) zoning for this area in order to accommodate the Avienda project, which is proposing approximately 800 dwelling units. The zoning for this land use is PUD-Regional Commercial. 2.7.5 | Business Fringe District This district was created to facilitate limited commercial activity in areas outside the MUSA. Currently the district is located at the intersection of Highway 101 and Flying Cloud Drive; however, the area is ultimately envisioned as a mixed-used development, with the existing uses to be phased out once urban services are available. Zoning in this area is BF-Fringe Business District. City of Chanhassen 2040 Comprehensive Plan33 2.8 | Public Semi-Public Land Use There areas are intended to serve a communal or public purpose. Uses with this designation include the Minnesota Landscape Arboretum, Campfire Girls (Camp Tanadoona), public school buildings including Districts 112 and 276, city owned property, and the Eckankar campus. Zoning is either OI (Office and Institutional District, A2 (Agricul- tural District), RR (Rural Residential District) or PUD (Planned Unit Development). 2.9 | Agricultural Land Use Consistent with the Thrive MSP 2040 regional development framework, no zoning district provides for purely agricultural land use. Some of the city’s larger properties are used for crop production, but as the city continues to urbanize these types of uses will become increasingly atypical. The city has reduced the development pressures on agricultural land though it’s MUSA phasing plan. It is the city’s policy to protect its rural regions from development until municipal services are available and requested. Some areas in the city are guided agricultural, but they are unlikely to be developed due to being located within flood plains or having extensive wetlands. 2.10 | Office Land Use The city is experiencing increased interest in office uses, and projects that over 200 acers of land will be developed for office use by 2040. In order to accommodate this demand, the area near the intersection of Highway 212 and Pioneer Trail is guided for office use. Additionally, the recently approved Avienda lifestyle center is expected to include 150,000 square feet of office space. Land intended for office use is zoned OI (Office Institutional District) or PUD (Planned Unit Development-Office/Institutional) zoning districts. 2.11 | Mixed Use Land Use The mixed-use land use allows for the blending of commercial and high-density residential developments. The city projects that 28 percent of land guided for mixed-use will be developed has high density residential with densities between 8 and 20 units an acre. For projecting land demand, an average density of 14 units per acre was used. The City anticipates that 19 acres of new residential development within the mixed use category will occur at this den- sity between 2020 and 2040.Village on the Ponds, located south of TH 5 and east of TH 101, and the Southwest Villages, located at the intersection of Lyman Boulevard and TH 101, are examples of more urban feeling mixed-use developments. Additional land near the intersection of TH 101 and Flying Cloud Drive is guided for mixed-use. These types of developments are facilitated by PUD (Planned Unit Development) zoning. 2.12 | Parks and Open Space Land Use The amount of land guided for Parks and Open Spaces includes almost 140 acres of potential new park and open space. The Bluff Creek Overlay District is an important mechanism for preserving open space, and the city contin- ues to use the district to encourage the use of density transfers to preserve woodlands and bluffs adjacent to these areas. City parks and the Lake Minnewashta Regional Park fall into this land use designation. All zoning districts permit the creation of parks. 2.13 | Policy Issues 2.13.1 | Buffer Yard Concept City of Chanhassen 2040 Comprehensive Plan34 To the greatest extent possible, natural features should be used to create buffers between residential and non-resi- dential uses. When these features are not present, the City Code requires the creation of additional setback or other forms of buffering, including landscaping. 2.13.2 | MUSA Impact on Existing Lots The city still has homes serviced by on-site sewage disposal systems. While these systems are an environmentally acceptable method of dealing with waste generated by large-lot subdivisions, they become more problematic when utilized to service smaller parcels. For this reasons, it is the city’s policy that these subdivisions remain large lot with a minimum lot size of 2 ½ acres. Requests for changes may be made incrementally (on a case-by-case basis), but it is city policy to review land use and zoning changes on an area wide basis. 2.13.3 | Comprehensive Plan Zoning Map Inconsistency Properties not served by urban services shall not be rezoned to a category consistent with their land use designation until urban services are available. Current zoning of a parcel at a less-intensive land use designation may remain until that time. Land use may only be intensified once the property has access to urban services. 2.13.4 | Maximum Use of Allowable Density Due to the city’s housing goals and participation in the Livable Communities Act, the city has the right to deny any project that does not meet the minimum density required by its land use designation. Valid reasons for denial include deviation from city requirements or offsetting the goals of the city. The city may provide developments with a density bonus to facilitate the provision of affordable housing. 2.13.5 | MUSA Staging The Metropolitan Urban Services Area (MUSA) is defined as areas within the city that may be served with cen- tralized infrastructure service and which may therefore develop at urban densities and intensities. The purpose of this boundary is to define the areas within the Twin Cities Metropolitan Area that are eligible for “urban services”, specifically sewers, municipal water systems and particular types of transportation systems. This boundary line is defined and maintained by the Metropolitan Council to assist in the orderly development of the metropolitan area. The city has identified the key infrastructure, lift stations, wells and streets needed to expand into the 2020 MUSA area. It is the city desire to direct development to those properties that have municipal services. Assuming that current development patterns continue the majority of the city will be developed by 2040. The pace of expansion of the MUSA will depend on availability of sufficient developable land to support the required infrastructure. City of Chanhassen 2040 Comprehensive Plan35 FIGURE 2-11 | MUSA 2020 City of Chanhassen 2040 Comprehensive Plan36 2.13.6 | Infill Development The maturation of the city has led to an increase in infill development especially in the downtown core. Buildings that are no longer viable or are obsolete are being redeveloped. The city is in the process of completing a downtown study/vison. The city anticipates that infill development within the downtown core will create approximately 200 new dwelling units between 2020 and 2040. While this plan does not contemplate a land use change, it will examine the existing market conditions and may make recommendation for uses and infrastructure improvements. 2.14 | Historic Preservation 2.14.1 | Introduction The city introduced a historic preservation section in the 2030 Comprehensive Plan. With the rural portion of the city ripe for development and the desire to preserve the city’s history, it is the appropriate time to formalize the city’s goals for historic preservation. 2.14.2 | Background “The history of Chanhassen begins in many places. It begins in Germany where social unrest moved some to travel across an ocean to find a new home. It begins in western Massachusetts in small towns in the Connecticut River Valley. It begins in the halls of Congress as the United States government decided how to distribute land. The area that we know as Chanhassen had its own history as well. Native American populations lived there for thousands of years. Research projects show evidence of habitation around Lake Susan, Minnewashta, and Lotus Lake as early as 6000 BC. For one hundred years, the Dakota were the primary native group, moving into the land and displacing the Iowa people sometime in the 1750’s. They had no major villages in Carver County. In 1851 the treaties of Transvers de Sioux and Mendota provided a cash payment to Native Americans in return for the land. Within weeks, settlers began staking claims.” Source: Chanhassen: A Centennial History. The Preemption Act of 1841, a statute passed by the U.S. Congress, permitted settlers to stake a claim of 160 acres and, after about 14 months of residency, to purchase it from the government for as little as $1.25 an acre before it was offered for public sale. Congress repealed the Preemption Act in 1891. The first wave of German immigration to America came when Minnesota lands opened for sale. A German colony gathered around a lake. Since all the families came from Bavaria, many began to refer to the lake by that name. The Northampton Colony migrated from several towns in the Connecticut River Valley and settled around Lake Minnewashta. In 1887, the Franciscan Brothers relinquished title to the property around St Hubert’s Church and the town of Saint Hubertus was platted. When the Village of Chanhassen was organized in 1896, St.Hubertus opted for the traditional name of Chanhassen. On April 21, 1896, Chanhassen was incorporated as a village government. “When the population of a township exceeds 2,000, the Minnesota Municipal Commission (MMC) is required to hold a hearing to determine its legal future. Chanhassen Township was the largest piece of unincorporated land in Carver County and became a target for the competing interests of local governments. Chaska made the first move, petitioning to annex 3800 acres of Chanhassen Township, including the new Hazeltine Golf Course and the pro- posed “New Town of Jonathan” annexation. In one legal maneuver, Chanhassen lost its southwest corner. The town- ship board was outraged and fought the ruling all the way to the Minnesota Supreme Court where they lost. Victoria began consideration to annex the northwest corner. The township permanently lost sections to Chaska and Victoria. The MMC issued an order in December 1966 that the township and village would merge if there were no objections within the community.” On May 2, 1967, the merger was approved by a vote of two to one. Chanhassen Township was dissolved.” Source: Chanhassen: A Centennial History. City of Chanhassen 2040 Comprehensive Plan37 City of Chanhassen 2040 Comprehensive Plan38 2.14.3 | Historic Preservation Historic Preservation is the act of maintaining and repairing existing historic materials and the retention of a prop- erty’s form as it has evolved over time. When considering the United States Department of Interior’s interpretation, “Preservation calls for the existing form, materials, features, and detailing of a property to be retained and preserved. This may include preliminary measures to protect and stabilize it prior to undertaking other work – or protection and stabilization may be an end in itself, for example, in an archaeological project.” Historic Preservation is a vital tool in the effort to save historic buildings and locales. It helps maintain a community’s historical roots and provides various educational opportunities. In the City of Chanhassen, the focus will be on buildings and places that are unique, time sensitive, culturally or socially important, or architecturally significant. Between December 3, 1997 and April 27, 1998, the city undertook a study of “Old Town” and attempted to create a historic overlay district. Property owners opposed restrictions on their properties that would impose limitations on exterior improvements and remodeling. They welcomed guidelines but not ordinances. The state and county play a role in historic preservation. The state is in charge of making recommendations of prop- erties that are worthy of nominations as historic properties or sites. The recommendation is forwarded to the Keeper of the National Registrar of Historical Places. The Carver County Historical Society’s role and mission is to collect and preserve artifacts and objects. Carver County was awarded a grant and hired The 106 Group, Ltd. to identify historically significant sites. This process included sites listed on the National Register of Historic Places, sites eligi- ble for National Register of Historic Places, and a photo of the property. The 106 Group, Ltd. phased their study into stages: Stage 1: Baseline Data Obtain data on the known historic, archaeological and cultural resources Stage 2: Develop Priorities Delve further into the identification of additional, previously unidentified historic resources Stage 3: Survey and Policy Development Identify and evaluate historic resources that are significant to the heritage and formulate policies with regard to the protection and preservation of those resources. Based on the available information, the city will establish a Recognition Program of historic properties and build- ings, with owner’s consent, designed to encourage private property owners to use, maintain, and protect their his- toric properties. The City of Chanhassen will rely on Carver County to be the Historic Preservation Organization. Properties requesting a historic designation or funding will be directed to Carver County Historic Society. 2.14.4 | Historic Buildings and Structures The city contains a number of structures that embody its architectural and cultural heritage. The city will continue to encourage the preservation, interpretation and active reuse of privately-owned historic buildings and structures, and will work to protect such buildings and structures to the extent feasible during the development process. The city will also continue to preserve and restore the historic structures it owns. The city will not actively pursue the acquisi- tion of historic sites or structures. City of Chanhassen 2040 Comprehensive Plan39 2.14.5 | Land Whenever possible, landmarks should be preserved on the site where they are located. Failing that, they may be moved, if feasible. A demolished landmark may be commemorated in one or more of the following ways: 1. Naming the new structure in honor of the old. 2. Inclusion of some architectural features of the original structure in the new structure. 3. A display area in the new structure which may include photographs or other memorabilia of the old structure or site. 4. A plaque or marker of appropriate size describing the original structure and its significance. City of Chanhassen 2040 Comprehensive Plan40 Chapter 3Housing City of Chanhassen 2040 Comprehensive Plan41 FIGURE 3-1 | Historic Count of Housing Types 3.0 | Introduction Housing comprises 43% of the land use in the city. Since Chanhassen became a city in 1967, the number of housing options has become more diverse. Housing choices have expanded from single-family detached homes to include apartments, condominiums, attached-single family, senior living facilities, and group homes. “Chanhassen is a Community for Life” and thus has provided land use and zoning supporting a variety of housing options for residents in all stages of life. The housing plan will examine existing conditions and provide an analysis of housing needs. The data comes from the June 2014 Maxfield Research Inc. “Comprehensive Needs Assessment for Carver County”, the US Census, the Metropolitan Council, the May 2017 Community Partners Research, Inc. “Carver County Affordable Housing Update”, the Minneapolis Area Association of Realtors, and the City of Chanhassen. Whenever possible the city has attempted to use the most recent information available; however, some older sources, particularly the 2014 Maxfield study, provide unique data not found elsewhere. 3.0 | Overview of Existing Housing Since 2000 the city has grown from a Census estimated 6,195 owner occupied homes and 719 rental units to an estimated 7,497 owner occupied homes and 1,207 rental units in 2015. Source: US Census & City of Chanhassen Building Permit Activity Housing Type Type of housing and units in structure 1990 2000 2010 2015 Owner Renter Owner Renter Owner Renter Owner Renter Single family detached 3,102 105 5,312 88 5,992 115 6,111 144 Single family attached 292 331 920 37 928 169 1,265 316 Duplexes 8 21 10 23 13 0 4 17 Buildings 3-4 units 15 30 24 35 95 23 18 15 Building with 5- 19 units 1 197 33 208 48 44 59 176 Building with 20 0 193 0 328 57 583 37 539 Mobile Homes 2 0 0 0 28 0 3 0 Other Units 8 11 0 0 0 0 0 0 Total occupied housing units 3,428 588 6,199 719 7,161 934 7,497 1,207 HOUSING | Preserve Housing City of Chanhassen 2040 Comprehensive Plan42 FIGURE 3-2 | Housing Permits Issued 2000-2017 *Attached Single Family homes are multi-family homes in which one structure has several dwellings sharing a common wall or walls with another unit. Attached homes are different from apartment buildings in that they usually have fewer dwelling units, typically two to six, and are more likely to be owner occupied than rented. Examples include duplexes, townhomes, and row houses. Source: City of Chanhassen Year Single Family Attached Single Family*Apartments Dwellings 2000 124 34 162 320 2001 85 44 100 229 2002 54 246 0 300 2003 59 94 243 396 2004 76 16 0 92 2005 60 24 0 84 2006 89 42 48 179 2007 65 86 18 169 2008 28 38 0 66 2009 71 14 0 85 2010 71 30 0 101 2011 106 62 0 168 2012 107 78 0 185 2013 89 86 0 175 2014 57 96 0 153 2015 80 24 0 104 2016 48 0 76 124 2017 55 12 0 67 Average 74 57 36 167 Over the last 18 years, the city has approved the construction of an average of 167 dwelling units a year. During 2003, the city issued 396 permits, compared to 66 permits in 2008. The extreme variation during this period is the result of it spanning both the height of the real estate boom and the subsequent economic recession. The five-year average of 125 permits a year represents typical post-recession permit volume for the city. As of 2018, projections for the city’s growth between 2017 and 2021 range from a low of 165 units a year to a high of 200 units a year. City of Chanhassen 2040 Comprehensive Plan43 3.1.1 | Occupied Housing Units by Type and Tenure Approximately 83% of the city’s housing was owner occupied in 2015, down from 88% in 2000. Detached single-family housing continues to be the mainstay of the city’s housing stock; however, the city has added 1,026 attached single-family units since 2000. Many of these units are owner occupied townhomes, although some of these dwellings are being rented. The city has also approved projects featuring multifamily dwellings during this period. Multifamily dwellings are defined as buildings with more than five units. These units include larger townhouses, condominiums, and apartments. Multifamily developments are generally rental properties; however, townhouses and condominiums can be either owner or renter occupied. Since the year 2000, the city has added 647 apartment units. FIGURE 3-3 | 2015 Housing Unit Types FIGURE 3-5 | Housing Tenure Source: U.S. Census, Metropolitan Council Source: US Census ( 2000, 10-year and 2015, 5-year ) Source: U.S. Census, Metropolitan Council FIGURE 3-4 | 2015 Housing Tenure Housing Type Single-family Multi-family 8,180 1,276 Tenure Ownership Units Rental Units 8,186 1,270 88% 10%2% 2000 Housing Tenure Owner-Occupied Renter-occupied Vacant 83% 14%3% 2015 Housing Tenure Owner-Occupied Renter-occupied Vacant HOUSING | Southwest Village City of Chanhassen 2040 Comprehensive Plan44 Over half of Chanhassen’s housing stock was built after 1990. While Chanhassen’s ratio of owner occupied housing built before and after 1990 is similar to Carver County as a whole, a significant portion of its housing stock is older than that of the other rapidly growing cities in the county. For example, 44% of Chanhassen’s ownership housing was built before 1990, compared to 25% in Victoria and 29% in Waconia. The above table lists the median sale price for all residential homes, including detached single-family, attached single-family, and condominium style homes. In 2017, Chanhassen’s median home sale price of $346,950 was the second highest in Carver County, $34,700 over the county’s median sales price. Only Victoria’s median home sale price of $439,900 was higher. FIGURE 3-6 | Age of Owner Occupied Housing Stock (Selected Communities) FIGURE 3-7 | Median Resale Price (Selected Communities) Sources: U.S. Census Bureau, Cities and Townships; Maxfield Research, Inc. Sources: Minneapolis Area Association of Realtors 3.1.2 | Owner Occupied Housing Cities Owner occupied before 1950 1950-1969 1970-1989 1990-1999 2000-2009 2010-2014 Carver 109 39 119 275 509 166 Chanhassen 159 788 2,560 2,552 1,133 714 Chaska 306 419 1,749 1,910 1,797 364 Victoria 128 202 319 617 927 358 Waconia 203 459 364 1,005 1,127 365 Carver County 2,512 2,855 7,002 7,522 6,947 2,090 Cities Median Sale Price (Selected Communities) 2013 2014 2015 2016 2017 Carver $282,500 $270,000 $277,750 $296,090 $345,000 Chanhassen $305,000 $318,838 $325,000 $336,950 $346,950 Chaska $252,000 $235,000 $255,000 $272,500 $293,000 Victoria $371,500 $369,990 $403,250 $423,018 $439,900 Waconia $229,000 $237,000 $250,000 $266,500 $272,000 Carver County $252,000 $258,050 $273,490 $279,900 $312,250 City of Chanhassen 2040 Comprehensive Plan45 FIGURE 3-8 | Chanhassen Single Family Sales FIGURE 3-9 | Active Single Family Developments January 2014 Source: Carver County Assessor; Community Partners Research, Inc. Source: Regional Multiple Listing Service, Maxfield Research Inc. *Home Starts are an average of permits issued from 2006 through 2013. **Estimates are for 2013 and are based on an inventory of active subdivisions. A 2014 survey of active subdivisions found that Chanhassen’s new single-family housing was typically priced between $325,000 and $525,000. The Maxfield study shows that Chanhassen and Victoria had the highest average “active” price of approximately $385,000. There were no active single-family developments under $325,000. *Good sales are fair, open market transactions. Once the data for detached homes, attached homes/townhomes, and condominiums is separated out, it is clear that the price of Chanhassen’s detached single-family housing stock is increasing significantly faster than the price for attached homes/townhomes or condominiums. This discrepancy may be due to the fact that only 24 new at- tached-single family units and no new condominiums were constructed in 2015 and 2016, meaning that most of these sales involved the resale of older units. Chanhassen Single Family Sales Sales Year Detached Houses Town Homes Condominiums Number of Good Sales* Median Sales Price Number of Good Sales* Median Sale Price Number of Good Sales* Median Sale Price 2016 332 $420,000 79 $228,250 79 $166,500 2015 356 $370,000 75 $228,242 76 $161,000 Cities Active Single Family Developments January 2014 Avg. Home Starts (2006- 2014)* Total Lots Vacant Dev. Lots Estimated New Home Prices Estimated Avg. Price** <$325K $325K - $525K $525K + Carver 29 115 68 25%70%50%$307,890 Chanhassen 87 479 118 0%80%20%$385,179 Chaska 68 671 256 50%75%20%$371,179 Victoria 64 502 106 0%50%50%$384,893 Waconia 61 481 144 15%65%20%$285,302 Carver County 357 4,128 1,216 32%55%13%$310,804 City of Chanhassen 2040 Comprehensive Plan46 FIGURE 3-10 | Active Multifamily Developments January 2014 FIGURE 3-12 | Chanhassen Rent Summary Quarter 1, 2017 Source: Regional Multiple Listing Service, Maxfield Research Inc. Sources: U.S. Census Bureau, Cities and Townships; Maxfield Research, Inc. Source: Community Partners Research, Inc. Approximately one third of Chanhassen’s rental housing was constructed before 1990. In Carver County as a whole, over half of rental units were constructed before 1990. No other community in the county has a higher percentage of rental properties constructed after 1990. The city has approved multiple apartment projects in 2017. The Venue with 134 market rate units, Mission Hills Senior Housing with 136 units, and Avienda Lifestyle Center PUD which envisions approximately 700 apartment units. *Home Starts are an average of permits issued from 2006 through 2013. **Estimates are for 2013 and are based on an inventory of active subdivisions. The Maxfield Study found that Chanhassen had the highest average price of active multifamily developments. The city’s estimated average price of $322,076 for new multi-family dwellings is significantly higher than the Carver County Average of $200,000. Cities Active Multi-Family Developments January 2014 Avg. Home Starts (2006- 2014)* Total Lots Vacant Dev. Lots Estimated New Home Prices Estimated Avg. Price** <$325k $325K - $525K $525K+ Carver 20 27 27 60%40%0%$207,450 Chanhassen 54 185 10 60%40%0%$322,076 Chaska 31 168 2 30%40%0%$280,000 Victoria 13 22 0 10%60%30%$260,000 Waconia 29 296 37 80%20%0%$225,000 CarverCounty 159 1,275 258 65%30%5%$200,000 Cities Renter Occupied before 1950 1950- 1969 1970- 1989 1990- 1989 2000- 2009 2010- 2014 Carver 20 0 0 0 0 0 Chanhassen 20 62 303 420 279 100 Chaska 154 115 1,140 471 988 0 Victoria 0 7 120 38 11 0 Waconia 96 156 234 74 162 100 Carver County 646 596 2,140 1,015 1,676 197 3.1.3 | Rental Housing FIGURE 3-11 | Age of Rental Housing Stock (Selected Communities) Bedrooms Estimated Median Rent 0-Bedroom $905 1-Bedroom $1,387 2-Bedroom $1,516 3-Bedroom $1,850 4-Bedroom N/A City of Chanhassen 2040 Comprehensive Plan47 Market rate rents in Chanhassen are higher than the rest of Carver County, for example, the median rent for a 2-bedroom unit in Chanhassen is $1,516 compared to $1,304 in Chaska. This discrepancy in rent rates is likely due to the fact that Chanhassen’s rental stock has a significantly higher percentage of newer units than other communities in Carver County. Community Partners Research, Inc. found that with an estimated 1,270 rental units Chanhassen has nearly 19% of Carver County’s rental stock. Only Chaska has a larger share of the County’s rental properties. A phone survey conducted by Community Partners Research reported a 1% or less vacancy rate in Chanhassen’s rental properties. Pervious work by Maxfield Research, Inc. in 2014 reported Chanhassen’s vacancy rate as 2.90%; however, they found that the city’s affordable housing had a vacancy rate of 0%. Vacancy rates below 5% are generally considered to indicate unmet need for rental housing. 3.1.4 | Housing Condition Seventy-five percent of the Chanhassen’s housing stock was constructed before 2000, and nearly two-thirds of the city’s housing was built between 1980 and 1999. Using the city’s property maintenance code, the city works with homeowners and property managers to ensure that this aging housing stock is safe and maintains its value. The property maintenance code establishes minimum requirements and standards for premises, structures, equip- ment, and facilities for light, ventilation, space, heating, sanitation, protection from the elements, life safety, safe- ty from fire and other hazards, and safe and sanitary conditions. The ordinance also provides for administration, enforcement, and, when necessary, penalties for non-compliance. Maintaining existing housing helps to provide residents with an increased diversity of housing options. 3.1.5 | Analysis of Existing Housing Needs The City of Chanhassen began as a farming and then a bedroom community and has continued to evolve over the last 30 years. While the largest land use is low density residential the city has become a full service community. As the population ages and the industrial and commercial uses attract younger people, the demand for a wide variety of housing has emerged. The city has identified preserving naturally-occurring affordable ownership and rental housing, ownership housing for seniors looking to downsize, ownership housing for first time-homebuyers, and increasing the supply of rental housing as the highest priority existing housing needs. Preserving and expanding these five categories of housing is a vital component of ensuring that Chanhassen is a community where individuals in all stages of life can find safe and desirable housing. HOUSING | Lake Susan Hills HOUSING | Western Hills City of Chanhassen 2040 Comprehensive Plan48 FIGURE 3-13 | Existing Housing Needs Action Plan Identified Need Available Tools Circumstances and Sequence of Use Preserve existing naturally-occurring affordable ownership housing within all levels of affordability Referrals The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist individuals with maintaining their homes and avoiding foreclosure. Maintenance Requirements Staff will continue to enforce the city's maintenance ordinance to preserve the quality and value of existing housing stock. Preserve existing naturally-occurring affordable rental housing within all levels of affordability Referrals The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist property owners with rehabilitating rental properties. Maintenance Requirements Staff will continue to enforce the city's maintenance ordinance to preserve the quality and value of existing rental stock. Rental Licensing Program The city maintained a rental licensing program from 2002 to 2011. The program was discontinued because few violations were uncovered and all of those were addressed by other sections of the code. It is unlikely the city will reinstate a rental licensing program. Ownership housing for seniors looking to downsize PUDs The city has approved and will continue to support the creation of small lot villas/condos/townhouse PUDs in appropriately zoned areas. Accessory Dwelling Units The city code allows for variances to accommodate ageing parents living in a separate dwelling unit within an existing house. Staff will encourage residents to pursue this option when appropriate. Ownership housing for first time homebuyers Code Optimization The city will continue to evaluate its development ordinance and its impact on development costs, especially the PUD ordinance and lot size/setback and design standards. PUDs The city will support the use of PUDs to create a variety of owner occupied housing types (vertical/horizontal townhouses, condominiums, detached villas/cottage style homes, etc.) Referrals The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist first time homebuyers. Rental housing for individuals of all income levels.Referrals The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist perspective renters in finding and affording housing. TIF The city would consider using TIF to support proposals for multifamily housing in locations near transit infrastructure. Accessory Dwelling Units The city would not support the use of accessory dwelling units to provide additional rental housing. City of Chanhassen 2040 Comprehensive Plan49 The Metropolitan Council has designated Chanhassen as an Emerging Suburban Edge. The density requirements for this designation are overall average net densities of at least 3-5 dwelling units per acre in forecasted growth through 2040. The city has also provided sufficient high-density land use to potentially meet the goal of accommodating 806 affordable housing units. 3.2 | Population and Income Over the last decade, the city of Chanhassen’s population increased just over 20 percent. The median age of the city increased 3.7 years and the household size has decreased by nearly 5 percent. 3.2.1 | Demographic Changes FIGURE 3-14 | Chanhassen Population by Age Chanhassen Population by Age 2000 2015 Change Number % of Total Number % of Total Number % ChangeAge Under 5 years 2,020 9.9%1,515 6.2%-505 -25.0% 5 to 9 years 2,227 11.0%1,931 7.9%-296 -13.3% 10 to 14 years 1,889 9.3%2,126 8.7%237 12.5% 15 to 19 years 1,197 5.9%2,102 8.6%905 75.6% 20 to 24 years 590 2.9%1,026 4.2%436 74.0% 25 to 34 years 2,608 12.8%2,370 9.7%-238 -9.1% 35 to 44 years 4,903 24.1%3,348 13.7%-1,555 -31.7% 45 to 54 years 2,816 13.9%4,839 19.8%2,023 71.8% 55 to 59 years 732 3.6%1,808 7.4%1,076 147.0% 60 to 64 years 419 2.1%1,173 4.8%754 179.9% 65 to 74 years 591 2.9%1,393 5.7%802 135.7% 75 to 84 years 270 1.3%464 1.9%194 72.0% 85 years and over 59 0.3%342 1.4%283 479.9% Total Population 20,321 100.0%24,437 100.0%4,116 20.3% Source: US Census In 2015 the largest segment of the population (19.8%) was 45 to 54 years old. The median age of the city’s residents was 39.2 years old, an increase of 3.7 years from the 2000 cen- sus’s average age of 35.5. The average age in the metropolitan statistical area was 36.6 years, roughly unchanged from its 2000 av- erage of 36.1 years. During this same period, the average age in Minnesota increased from 35.4 to 37.7 years, an increase of 2.3 years. These different rates of increase are likely the result of millennials’ preference for more urban environment, and Chanhassen’s hous- ing market being skewed towards executive/ move up housing rather than starter homes affordable to younger couples and families. HOUSING | Summerwood City of Chanhassen 2040 Comprehensive Plan50 Chanhassen Population and Household Estimates Met. (2016)City (2016) Total Population 25,448 24,951 Number of Households 9,267 9,233 Persons per Household 2.74 2.70 Household Type 1990 2000 2010 2015 Family Households 3,273 5,524 6,257 6,864 Married Couples 2,982 4,925 5,505 5,957 with related children under age 18 1,767 3,143 3,470 3,673 no related children under age 18 1,215 1,782 2,035 2,284 Other families 291 599 752 907 Male household, no wife present 88 168 218 276 with related children under age 18 47 112 128 156 no related children under age 18 41 56 90 120 Female Household, no husband present 203 431 534 631 with related children under age 18 137 316 352 348 no related children under age 18 66 115 182 283 Non-family households 743 1,390 2,095 1,840 1 person 527 1,086 1,718 1,523 2 or more persons 216 304 377 317 Total 4,016 6,914 8,352 8,704 Source: US Census The majority of households in the city are comprised of married couples with children. Many of these couples desire traditional detached single-family housing, and this demand has largely driven Chanhassen’s housing market. The city’s location in eastern Carver County and proximity to employment centers means that there will continue to be strong demand for single-family housing. Between 2000 and 2015 the US Census shows that the average persons per household in Chanhassen has dropped from 2.94 to 2.8, a decrease of 4.76%. This decrease is partially explained by young couples choosing to have fewer children, average family size decreased by 3% over this period, and millennials choosing to delay starting families until later in life. Another contributing factor is the increasing number of empty nesters and widows/ widowers. This trend of smaller households and families is expected to continue as the population ages; however, Chanhassen’s 2015 average household size of 2.8 is significantly higher the metropolitan statistical area’s average household size of 2.54. Due to Chanhassen’s location in Eastern Carver County and its amenities, it is likely that the city will continue to attract a disproportionately large share of the region’s young families with children. FIGURE 3-15 | Chanhassen Households by Type FIGURE 3-16 | Chanhassen Number of Households and Size FIGURE 3-17 | 2016 Estimates 2000 2015 Change % Change Number of Households 6,914 8,704 1,790 25.89% Persons per household 2.94 2.8 -0.14 -4.76% Source: US Census Source: Metropolitan Council, Internal Projections. The Metropolitan Council estimates that Chanhassen’s 2016 population was 25,448 people in 9,267 households, which works out to an average of 2.74 people per household.* City of Chanhassen 2040 Comprehensive Plan51 *The difference between these estimates and the numbers reported by the US Census is likely the result of the fact that the most recent census data available comes from the 2011-2015 American Community Survey 5-year estimates. This means that since data from 2011 to 2015 is averaged out to reduce the margin of error the census estimates likely underestimate the population and number of households actually present. The 2015 5-year estimates were used for the proceeding discussion because they provide more detailed data on age and household composition and allow for direct comparison with previous years’ census data. The U.S. Census estimates that Chanhassen’s 2015 median household income was $110,569. Caver County’s 2015 median household income is reported as $86,323, and the metropolitan statistical area is listed as $68,778. Chanhassen’s amenities, location, and housing stock is expected to continue to attract house- holds with median incomes above the regional average The Maxfield study examined the population’s demographic trends and believes that following will be true in Carver County: » Households will increase faster than population as the overall population ages, couples will have fewer children, and single-person households will become more common. By 2040, they predict an average household size of 2.39 people. Caver County’s household size decrease will likely be at a slower pace than other areas of the metropolitan statistical area. » Strong growth is expected across all age groups for the next 20 years, with growth in the number of 25 to 39 year olds fueling demand for single-family housing, town homes, and rental options. After 2030, the older adult population, 55+, is expected to increase rapidly, prompting an increased need for senior oriented housing. » People between ages 55 and 74 will experience the most rapid growth rates this next decade. The younger portion of this group is still looking for move-up housing, and are willing to consider alternatives to traditional single-family homes. » Western Carver County will likely have higher percentage of young families seeking affordable housing; where as, communities in eastern Carver County will likely see a mix of senior, young adults, and older adults. These increases will be due to the aging of the existing population, young adults looking for rental housing near employment hubs, and older adults with greater means purchasing housing that is more expensive. » Post 2030 adults ages 60 to 79 are expected to become the second largest age cohort, after adults 40 to 59 3.2.2 | Income FIGURE 3-18 | Chanhassen’s Median Household Income by Age 2015 Median Household Income By Age Under 25 $53,472 25 to 44 $119,778 45 to 64 $127,852 65 and over $43,894 All Households $110,569 Source: American Community Survey 5-Year Estimates 3.3 | Future Housing Demand FIGURE 3-19 | 2040 Regional Development Forecast Chanhassen Regional Development Forecast Category Census Revised Forecast 2010 2020 2030 2040 Population 22,952 26,700 31,700 37,100 Metro Sewered 20,576 24,320 29,330 34,720 Households 8,352 10,000 11,900 14,000 Metro Sewered 7,519 9,170 11,070 13,170 Employment 10,905 15,600 17,000 18,400 Metro Sewered 10,662 15,400 16,800 18,200 Source: Metropolitan Council The Metropolitan Council believes that Chanhassen’s population will grow by over 11,500 between 2017 and 2040. This population in- crease will take the form of over 4,700 new households. The size and composition of these new households will determine the composition of Chanhassen’s housing market. City of Chanhassen 2040 Comprehensive Plan52 3.3.1 | Residential Lands The city has approximately 1,200 acres of land guided for residential uses. The city projects that the majority of this land will be developed by 2030. It anticipates that land guided for single-family homes will initially be the preferred dwelling type, with an increasing share of multifamily housing developed as the city transitions from building out to in-fill/redevelopment. Most of the housing is expected to be market rate, though there is a strong demand for low- and moder- ate-income housing as well as senior oriented housing products. The Maxfield study had projected that the city would add 6,560 units of housing between 2014 and 2040. Since the study was commis- sioned, new information has caused the Metropolitan Council to re- vise its projections for the city’s growth to down to 4,733 households. FIGURE 3-20 | Chanhassen Projected Housing Demand, 2014 to 2040* FIGURE 3-21 | Chanhassen Projected Housing Demand, 2014 to 2040* Housing Demand 6,560 Ownership 4,479 Single Family 1,971 Multi- family 2,508 Senior 1,206 Adult Owned 310 Adult Rental 580 Service- Enriched 316 Rental 875 Afford/Sub 285 Market Rate 590 Source: Maxfield Research Inc. *The numbers in the Maxfield model are higher than the city’s expected growth; however, the relative distribution of dwell- ing units between the different categories of housing is still informative. HOUSING | Fawn Hill Demand for Additional For-Sale Housing 2014 to 2020 2020 to 2030 2030 to 2040 Projected Household Growth 2,615 2,280 1,665 Estimated Homeownership Rate 75%76%66% Total New Homeowners 1,964 1,730 1,095 Ratio Single Family/Multifamily 50/50 35/65 35/65 Number of Single Family/Multifamily 982/982 606/1,125 383/712 Single Family <$325,000 0 (0%)0 (0%)0 (0%) Single Family $325,000 -$525,000 393 (40%)61 (10%)38 (10%) Single Family $525,000+589 (60%)545 (90%)343(90%) Multifamily-Gen. Occupancy <$225,000 471 (50%)301 (30%)197 (35%) Multifamily-Gen. Occupancy $225,000+471 (50%)703 (70%)365 (65%) Multifamily-Senior <$225,000 40 120 150 Source: Maxfield Research Inc. *The numbers in the Maxfield model are higher than the city’s expected growth; however, the expected distribution of dwelling units between the different catego- ries of housing is still informative. City of Chanhassen 2040 Comprehensive Plan53 3.3.4 | Demand for Rental Housing FIGURE 3-22 | Demand for Additional Rental Housing*Source: Maxfield Research Inc. *The numbers in the Maxfield model are higher than the city’s expected growth; however, the expected distribution of dwell- ing units between the different categories of housing is still informative. The city anticipates a high de- mand for rental housing based the community’s proximity to Carver County’s job hubs, and the desire to locate housing in conjunction with transit or commercial centers. The Maxfield models shows between 2014 and 2030 the greatest demand for rental housing will be for general occupancy rather than senior oriented developments. Throughout the period be- tween 2014 and 2040, they indicate that while the majority of demand for rental housing will be for market rate units, there is also a need for afford- able general occupancy and senior oriented units. 3.4 | Lifecycle Housing In 2014 the City of Chanhassen agreed to participate in the Livable Communities Act. In 2015 the City Council adopted a Housing Action Plan. Demand for Additional Rental Housing 2014 to 2020 2020 to 2030 2030 to 2040 Projected Household Growth 2,615 2,280 1,665 Estimated Percent Renters 25%24%34% Total New Rentals 651 550 570 Ratio General-Occupancy/Senior 58/42 53/43 37/63 No. of Units (General- Occupancy/Senior)375/276 290/260 210/360 General Occupancy Percent Subsidized 39%28%29% 50-80% Median 100 40 50 50% Median 45 40 10 Total New Rentals 145 80 60 Percent Market Rate 61%72%71% Number Market Rate 230 210 150 Senior Rental Housing Percent Affordable Adult 40%46%28% Number 110 120 100 Percent Market Rate 60%54%72% Adult 100 50 100 Congregate 36 50 80 Assisted Living 5 20 40 Memory Care 25 20 40 Number (total)166 140 260 Maxfield’s model shows that they believe the majority of Chanhassen’s detached single-family housing will con- tinue to be oriented toward move-up and executive housing, with no new units expected to be available for less than $325,000. As land available for constructing new detached single-family homes becomes scarcer, they expect the cost of these types of houses to increase. Their model shows that most of the demand for entry-level ownership housing will be met by multi-family developments, i.e. apartment condominiums and town houses. HOUSING | Centennial Hills City of Chanhassen 2040 Comprehensive Plan54 FIGURE 3-23 | Livable Communities Act FIGURE 3-24 | Chanhassen’s 2021-2030 Affordable Housing Allocation 3.4.1 | Livable Communities Act In 2014 the City of Chanhassen established the above affordable and life-cycle housing goals as part of its participa- tion in the Metropolitan Livable Communities Act. The city’s participation in this program reflects its commitment to providing all of its residents with access to a balanced housing supply which provides housing options for people of all income levels. 3.4.2 | Affordable Need Allocation In order to ensure that options for affordable housing are available in every community and that no one community is providing a disproportionate share of the region’s affordable housing, the Metropolitan Council assigns each community a share of the region’s affordable housing need. This need is further broken up by income category with specific targets for level of need. The Metropolitan Council acknowledges that market conditions and development forces may mean that these units are not constructed; however, they require that cities demonstrate that they have sufficient land guided at high enough densities in order to accommodate these developments, should the opportunity emerge. The Metropolitan Council states that communities can meet this requirement by having a sufficient amount of land guided at a minimum density of 8 units/acre to meet its afford- able housing need allocation. LCA (from 2015 Housing Action Plan) City Index Benchmark Goal Affordability Ownership 37%60-69%30% Rental 44%35-37%35% Life-Cycle Type (non-single family detached)19%35-37% 34% (1991 Comp Plan) Owner/Rental Mix 85/15%67-75/25-33%80-90/20-10% Density Single family detached 1.5 units/acres 1.8-1.9 units/acre 1.8 units/acre Multifamily 11 units/acres 10-14 units/acre 9-10 units/acre Overall Average 3.3 Source: City of Chanhassen Source: Metropolitan Council. Affordable Housing Need Allocation 31% to 50% AMI 197 51% to 80% AMI 145 At or below 30% AMI 464 Total Units 806 AMI = Area Median Income City of Chanhassen 2040 Comprehensive Plan55 FIGURE 3-25 | Demonstrated Capacity to meet Affordable Housing Allocation The city anticipates that 118 vacant acres guided for high-density residential uses will be available for development in 2020, along with an additional 19 acres guided for mixed use primarily residential. Both of these land use cate- gories have minimum densities of 8 units/acre. These categories also allow for development densities significantly higher than the 8 unit/acre minimum with maximum densities of 16 and 20 acres, respectively. Although not included in the above totals, both the city’s Central Business District and recently approved Avienda lifestyle center allow for residential developments with densities over 8 units/acre. The Central Business District has no maximum density and the Avienda PUD will allow for a significant portion of 115-acre site to be developed for residential uses with a maximum density of 16 units per acre. These potential units are not included due to the high level of uncertainty regarding the nature of redevelopment in the CBD and the final composition of Avienda’s residential component; however, both of these areas have the potential to provide significant additional amounts of high-density residential housing. Capacity to Meet Affordable Housing Need Allocation Vacant Acres Density (units/acre) Total Units 137 8 1096 City of Chanhassen 2040 Comprehensive Plan56 FIGURE 3-26 | Areas Accommodating New High Density Residential Sand y H o o k Road W82ndStWestL a keCrt LakeS u s a nD riveL ak o t a LaneSunset TrailSandyHook C irCheyen neBighornDrive HazeltineBlvd(Hwy41)Lyman Blvd (CS AH1 8 )MinnewashtaParkwayCircle JuniperAve.DogwoodRdSommer G ate RingneckDr.Pheasant Dr Hillsd al eCrt S o u th e r n C r t ForestRidgeCircleHawthorne ChaskaRoadMolineCirS te lle r Cir WhiteDoveDr Stratton CrtCharing Bend H e a therCourtPowersBlvd(CSAH17)S a ddlebrookPass Trott ersCirTargetLaneKerberBlvdChippewaCir ChippewaTrailSan ta Ve r a DrSaratogaDr Saratoga CirSanta Fe Trail Si er raT ra ilSierra Court S h a d owm e r e CanterburyCir R e d w i ng C t.NezPerceCt O x b o wBendSum mit Circle StagHornLn Oxbow B e ndD ak o taD a k otaCir cl eBuc k in g w o o d C ou rtT i mberwood Dr Pin e wo o d Cir cle A co rn L a neM a p lew o odT e rrac e Oakwood Ridge Renais sance Co urtBenwoodCircle StoneCr eekRdStoneCree k D rStoneCreekDr BluffViewCourt CreekViewCourt Lake D riveW estCommerce Dr Valle y Ridge TrailNorth V alley Rid g eTrail South Valley View Court ValleyRidgeCourtValleyRidge Place ValleyView P lSpoo n b il l C i r M alla rd C r tEgretCrtLakeSusanHillsD r FlamingoDrTe r n C r tK ingfis he r Crt T h r ush Crt M erga nser C rtOaksid e CircleLyman Court MaryJ aneCirBarbara Cr tDrakeCrtDove CrtParkDrPark Roa d L a k e D riveDakotaCirErie AveW 86thSt Quinn RoadBluffCircleFawnHill Court RidgeRoadBelmo nt L n W 78th St W.Village Road LakeLucyLane C restvi ewCir Wh i te t a il R id ge C o ur t MoccasinTrai l W 79th St.Crimson Bay RdG reatPlainsBlvdIn d i a n H i l l R d Yuma D r KiowaLongacres D rMcGlynn DrMelodyLane P.V.LN.P.V.CirLake LucyRoad CenturyBoulevardLon g a c re s D rFawnHillR d FAWNHILLROAD82nd Street MainStreetHighoverDriveHighoverCrtS HighoverCrtN 21 3 4 5 6 Grandview RdStone CreekCrt H eron Dr AlisaCourtAlisaLaneBentBowTrail GunflintCourt 3 C ou lt e r B o u le v a r d Coulter Blvd Andrew Court Coulter Blvd 1 KIMBERLY LANE 3 Nicholas Way 2 Kelly CourtLakewayDrive Lake D riveWestL a k e D r iveL a keD rE.Deerbr o o k Dr H o rse s h o eL a n e HorseshoeCurveBridleCreek Circle NorthwoodCourt4 Autumn Ridge Ct5 Autumn Ridge Ln6 Autumn Ridge Way StoughtonAveHennepinCountyR e g io n a lT ra ilC o r r i d o r West Farm Ro a d H e id i L a neHe s s e F a r m C i r VogelsbergTrailMandan RaspberryHillBl uff Creek Drive M ills Road FlintlockTrailW. 96th Street Hwy101GreatPlainsBlvdFoxfordRoad W 94thSt.KiowaTrailLake Riley BlvdDeerfootTrail ParklandWay Spr ingfiel d D rEastwoodCrt OverlookCourt Sun n y v a le D rGree n v i ew Dr. ShoreviewCourt Greenleaf CourtSummerfieldDrSummerfieldDrive Lym a n Blvd Lak ev iewRdE N o rthB ayDr1 Mission Way Hill W2 Marshland Tr 3 Blackbird Ct4 Hartland Ct 5 Mission Hill Way E6 Rice Ct7 Monk Ct 8 Mayfield Ct9 Mission Hills Dr 10 Frisco Ct Tig u a L aChanhass en Hills Dr NorthC hanh a ssenH illsDrSouthL a keS us a nC rtL akeSusan Hills D r2 43 1 W 187th StW 77th St 5 P elicanC rtOspreyLnBluebillTrailBitternCourtSwanCourtI bi sCrtWestLakeDr MarketBlvd DellRoadLakeDrive E. 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Residential High Density, Mixed Use, and Possible Redevelopment CORRIDOR BLUFF CREEK PRIMARY CORRIDOR Taxparcel 2040 Landuse Type Lifestyle Center Mixed Use Possible Redevelopment Residential High Density 1/23/2018 City of Chanhassen 2040 Comprehensive Plan57 FIGURE 3-28 | 2015 Housing Cost Burdened Households Source: Department of Housing and Urban Development, Metropolitan Council The Metropolitan Council has found that in 2015 Chanhassen had 1,403 household who were cost burdened. Approximately half of these cost-burdened households are renters, and renters over the age of 65 are especially likely to be spending over 30% of their income on housing. Another important term to understand when discussing affordable housing is “cost burdened”. Federal guidelines state that a household spending more than 30% of its income on housing, including utilities, is cost burdened. Households spending more than 35% of their income on housing are considered severely cost burdened and may have trouble affording other essential goods like food and clothing due to the high proportion of their income going towards housing. Many subsidized housing projects either cap rents at rates that will not represent a cost burden to individuals making 80% AMI or limit the maximum rent tenants pay to 30% of their monthly income. Source: Department of Housing and Urban Development 3.4.3 | Affordable Housing Overview The actual income thresholds that determine if households are classified as extremely low income, very low income, or low income depend on both the household’s location and its size. The United States Department of Housing and Urban Development establishes guidelines that determine if families qualify for subsidized affordable housing. FIGURE 3-27 | Department of Housing and Urban Development Income Thresholds 2015 HUD Twin Cities Affordability Levels Household Size Extremely Low Income (30% AMI) Very Low Income (50% of AMI) Low Income (80% of AMI) One-person $18,200 $30,350 $46,100 Two-person $20,800 $34,650 $52,650 Three-person $23,400 $39,000 $59,250 Four-person $26,000 $43,300 $65,800 Five-person $28,410 $46,800 $71,100 Six-person $32,570 $50,250 $76,350 Seven-person $36,730 $53,700 $81,600 Eight-person $40,890 $57,200 $86,900 2015 Housing Cost Burdened Households 30% or less AMI 31% to 50% AMI 51% to 80% AMI 343 365 695 City of Chanhassen 2040 Comprehensive Plan58 FIGURE 3-29 | 2015 Affordability of Existing Housing FIGURE 3-30 2015 Affordable Ownership Housing Source: Metropolitan Council Affordable ownership housing is defined as housing that is affordable to buyers earning 80% of the area median in- come. The Metropolitan Council equates this to a house priced at $238,500. The Community Partners Research, Inc. study looked at all Chanhassen home sales, new and resale, and found that the 2016 median sale price for detached single-family homes was $420,000. They found that the median price for townhomes was $228,250, and that con- dominiums had a median price of $166,500. The city’s inventory of condominiums, attached single-family homes, and older detached single-family homes means that there are opportunities for affordable homeownership; however, those opportunities become scarcer for individuals earning less than 50% of the medium income. The majority of the city’s existing affordable housing takes the form of ownership units. The map below shows the distribution of the city’s ownership housing. Affordable ownership units tend to be found in the city’s older subdivi- sions and attached housing developments. Source: Metropolitan Council The Metropolitan Council estimates that Chanhassen has 3,125 dwelling units which are affordable to families making less than 80% of area’s median income. The number of affordable units decreases significantly for households making less than 50% AMI. The Metropolitan Council evaluates cities based the amount of affordable housing they create and preserve. Chanhassen has a housing performance score of 39 out of 100 (down from 45). This number is used to help pri- oritize the allocation of funding in the Livable Communities Demonstration Account and Tax Base Revitalization Account. The city’s score has gone down due to the fact that no new affordable units have been constructed in the last decade. A lower score hurts the city’s chance of being awarded money from these accounts and also impacts the city’s score on requests for transportation funding. Low scores also give the city preference for the Housing Incen- tives Account, an account which helps cities create affordable housing projects. While the city has created a small lot residential zoning district and uses Planned Unit Developments to encourage the construction multifamily housing, the high cost of land and rising construction costs mean that the city cannot provide the amount of assistance required to build new affordable housing. 3.4.4 | Affordable Ownership Housing 2015 Existing Housing Assessment Affordable Level Units % of Units 30% or less AMI 154 1.63% 31% to 50% of AMI 943 9.97% 51% to 80% of AMI 2,028 21.45% Above 80% AMI 6,331 66.95% Total 9,456 100% 2015 Affordable Ownership Housing 30% AMI 50% of AMI 80% of AMI $84,500 $151,500 $238,500 City of Chanhassen 2040 Comprehensive Plan59 FIGURE 3-31 | Owner-Occupied Housing by Estimated Market Value Source: Metropolitan Council Access to ownership housing is supported by Carver County CDA’s homebuyer and foreclosure prevention counselors which assisted 369 residents in purchasing or keeping their home between 2008 and 2016. Chanhassen Eden Prairie Excelsior Greenwood Jackson Twp. MinnetonkaMinnetrista Shakopee Shorewood Tonka Bay Dahlgren Twp. Carver Chaska Victoria Laketown Twp. - Owner-Occupied Housing by Estimated Market Value 1/5/2018 .1 in = 1.05 miles Chanhassen County Boundaries City and Township Boundaries Streets Lakes and Rivers Owner-Occupied Housing Estimated Market Value, 2016 $243,500 or Less $243,501 to $350,000 $350,001 to $450,000 Over $450,000 Source: MetroGIS Regional Parcel Dataset, 2016 estimated market values for taxes payable in 2017. Note: Estimated Market Value includes only homesteaded units with a building on the parcel. City of Chanhassen 2040 Comprehensive Plan60 FIGURE 3-32 | 2015 Affordable Apartment Rents FIGURE 3-33 | 2015 Publicly Subsidized Units Source: Metropolitan Council Source: Housing Link Streams Data Note: Affordable rents include utilities. 3.4.4 | Affordable Rental Housing For rental housing to be considered affordable, units must have rents below the Metro Housing and Redevelopment Authority standard ($945 for one-bedroom units and $1,190 for a two-bedroom units) to qualify for the Housing Choice Voucher program. Community Partners Research, Inc. estimated the city’s 2017 median rents for one and two-bedroom units to be $1,387 and $1,516, respectively; however, a significant portion of Chanhassen’s older rent- al stock is priced at or below the Metro Housing and Redevelopment Authority’s guidelines. Despite the existence of lower cost rental units Community Partners Research, Inc. estimates that approximately 59% of Chanhassen’s renters pay 30% or more of their income in rent, with the figure increasing to 92% for senior households. When all renter households were examined, they discovered that median percentage of monthly house- hold income that went towards rent was 33%. By comparison, the County wide median was 27.8%. The city has one publicly subsidized housing development, the Gateway Place, a 46-unit development which was funded by housing tax credits. Gateway Place’s compliance period will end in 2021 and, unless relief is sought, its extended use period will last until 2036. The city’s other subsidized housing development, Heritage Park, transi- tioned to market rate housing in 2004 when its housing tax credits’ compliance period expired. The Centennial Hill development provides 65 units of affordable senior housing. These units are priced below market rate, and are subject income limits of 100% of area median income. Community Partners Research, Inc. reported rental rates ranging from $798 to $919 for one-bedroom units and $1,878 for two-bedroom units. Additionally, while the Summerwood project primarily provides market rate senior housing, the city created a TIF housing district to provide 32 affordable senior housing units. Affordable rental housing is also supported by the Carver County CDA. They provide Chanhassen residents with 47 Metro HRA Housing Choice Vouchers, 65 CDA affordable rental units, 13 CDA subsidized rental units, and 3 project based voucher units. 2015 Affordable Apartment Rent Number of Bedrooms Affordable rent at 30% AMI Affordable rent at 50% AMI Affordable rent at 80% of AMI Studio $450 $751 $1,201 1-BR $483 $805 $1,288 2-BR $579 $966 $1,545 3-BR $669 $1,115 $1,784 4-BR $747 $1,245 $1,992 2015 Publically Subsidized Units All publicly subsidized units Publicly subsidized senior units Publicly subsidized units for people with disabilities Publicly subsidized units: All others 134 0 0 134 HOUSING | Oak Ponds City of Chanhassen 2040 Comprehensive Plan61 FIGURE 3-34 | Chanhassen Multifamily Rental Housing Inventory Source: Community Partners Research, Inc., Maxfield Research Inc. Project Name/ Location Year Built Total Units Unit Mix Unit Size (Square Feet) Amenities/Comments Market-Rate General Occupancy Powers Ridge 1371 Lake Dr W 2002 101 22 3 64 12 1BR 1BR/D 2BR 3BR 775-881 904 1,205-1,098 1,347 3-story buildings, Residents pay electric & gas. UG garage included. Lake Susan Apts 8260 Market Blvd 2001 162 59 12 82 3 1BR 1BR/D 2BR 3BR 821 1,031 1,125-1,153 1,344 3-story buildings, residents pay electric & heat. UG garage included. Heritage Park 425 Chan View 1990 60 18 6 36 1BR 1BR/D 2BR 763-766 868-872 954-1100 3-story building, residents pay electric, heat, and gas. UG garage parking is not included. W Village Townhomes 700 W Village 1987 64 1 55 8 1BR 2BR 3BR 870 912 1,050 Santa Vera 601-612 1979 18 8 10 1BR 2BR 800 1,000 Two 2-story walk-up building. Owner pays heat. 16 garages included in rent. Tenants pay electric. Chanhassen Village 7721 MN Hwy 101 1973 120 69 51 1BR 2BR 720 970 Six 3-story buildings. Owner pays heat, water, sewer, and trash. Off-street parking, additional parking available. Chan View Estates 420, 440, 489 Chan View 1969 35 2 11 22 Eff 1BR 2BR 545 690 900 Three 3-story walk up buildings. Heat is included in the rent. Chan View Apts. 410 Chan View 1968 24 12 12 1BR 2BR 650 750 3-story walk up building. Heat is included in rent. Deep-Subsidy/Shallow-Subsidy General Occupancy Gateway Place 721 Lake Susan Drive 2007 48 4 27 17 1BR 2BR 3BR 900 1,041-1,216 1,380-1,450 LIHT Affordable at 60% of AMI. 3-story building. UG parking and heat included. Market Rate Senior Housing Powers Ridge 1371 Lake Dr W 2017 76 24 45 6 1BR 2BR 3BR 812-1,065 1,066-1,175 1,426-1,453 Independent living, 55+, UG Garage included. Summerwood of Chan. 525 Lake Drive 2005 53 2 41 10 Studio 1BR 2BR 265 555-690 950 Assisted living, 55+ Summerwood of Chan. 525 Lake Drive 2004 90 44 13 33 1BR 1BR/D 2BR 705-758 1,000-1,100 1,240-2,009 Congregate, 55+ Summerwood of Chan 525 Lake Drive 2005 18 4 13 1 Studio 1BR 2BR 265 525-580 950 Memory Care, 55+ Shallow-Subsidy Senior Housing Centennial Hills 820 Santa Vera Drive 1996 65 39 23 3 1BR 1BR/D 2BR 700-750 965-984 1,060 Carver County CDA, 3- story affordable building that opened in 2006. City of Chanhassen 2040 Comprehensive Plan62 3.4.5 | Upcoming Projects Creating Lifecycle Housing Several projects which will further increase the diversity of Chanhassen’s housing stock have recently been approved, and others are working their way through the city’s approval process. While none of these projects includes publicly subsidized affordable housing, they will all provide alternatives to traditional single-family detached housing. Arbor Glen A 18 unit detached single-family development. The homes will be handicap adaptable, and the HOA will be respon- sible for all exterior maintenance. While not age restricted, this development is designed to provide housing options for older individuals looking to downsize and age in place. Mission Hill A senior oriented planned unit development with 8 independent living twin homes, 16 units, and a 136-assisted living unit senior housing apartment build- ing. A daycare has also been incorporated into this building. The City Council approved this development on May 8, 2017. Avienda A 115-acre regional commercial/lifestyle center. This development will include up to 800 units of housing. The exact mix of this housing will be determined by the market; however, medium density single-family ownership housing and senior apartments with some level of service are the envisioned uses. This develop- ment was approved by the City Council on July 10, 2017. City of Chanhassen 2040 Comprehensive Plan63 Venue A 134-unit market rate apartment in the heart of Chanhassen’s downtown. These units will provide a walkable downtown rental option. This development also includes a 19,000 square foot retail space which will be occupied by Aldi. This development was approved by the City Council on July 10, 2017. West Park A 82-unit townhouse development featuring a mix of four-, five-, and six-plexs. These units are expected to be priced between $300,000 and $400,000. Units on the lowest end of the price range will provide entry-level housing. This development was approved by the City Council on July 10, 2017. City of Chanhassen 2040 Comprehensive Plan64 3.5 | Action Plan The city will continue to uphold the housing goals and policies of the comprehensive plan. FIGURE 3-36 | Affordable Housing Needs Action Plan Allocation of Affordable Housing Need at or below 30% AMI: 464 Units Allocation of Affordable Housing Need btwn. 31% to 50% AMI: 197 Units Allocation of Affordable Housing Need between 51% to 80% AMI: 145 Units TIF Tax Abatement Housing Bonds Site Assembly Tax Levies to support Affordable Housing Local Housing Incentive Account Local Housing Incentive Account Livable Communities Demonstration Account Livable Communities Demonstration Account Tax Base Revitalization Account Tax Base Revitalization Account Community Growth Partnership Initiative Referrals TIF Tax Abatement Housing Bonds Site Assembly Density Increase Local Housing Incentive Account Livable Communities Demonstration Account Tax Base Revitalization Account Community Growth Partnership Initiative Referrals Tax Levies to support Affordable Housing Community Growth Partnership Initiative Referrals Tax Levies to support Affordable Housing Density Increase TIF Tax Abatement Housing Bonds Site Assembly Density Increase The city has and will continue to consider using TIF to support proposals for this type of housing in areas guided for high density residential use. The city has and will continue to consider applying for a LHIA grant to support proposals for this type of housing in areas guided for high density residential use located near transit hubs. The city has and will continue to consider applying for a LHIA grant to support proposals for this type of housing in areas guided for high density residential use located near transit hubs. The city would strongly consider applying for a LCDA grant to support proposals for this type of housing in areas guided for high density residential use. The city would strongly consider applying for a TBRA grant to support proposals for this type of housing in areas guided for high density residential use located near transit hubs. The city would strongly consider applying for a CGPI grant to support proposals for this type of housing in areas guided for high density residential use. The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist developers in creating viable affordable housing projects. The city has and will continue consider using TIF to support proposals for this type of housing in areas guided for high density residential use. The city would be unlikely to use tax abatement to support new construction. The city would support the issuance of housing bonds; through the Carver County HRA. The city would not engage in site assembly. The city code does permit up to a 25% increase in the net density for a project featuring affordable housing. The city has and will continue to consider applying for a LHIA grant to support proposals for this type of housing in areas guided for high density residential use located near transit hubs. The city would strongly consider applying for a LCDA grant to support proposals for this type of housing in areas guided for high density residential use. The city would strongly consider applying for a TBRA grant to support proposals for this type of housing in areas guided for high density residential use located near transit hubs. The city would strongly consider applying for a CGPI grant to support proposals for this type of housing in areas guided for high density residential use. The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist developers in creating viable affordable housing projects. The city would not adopt dedicated tax levies. The city would strongly consider applying for a LCDA grant to support proposals for this type of housing in areas guided for high density residential use. The city would strongly consider applying for a TBRA grant to support proposals for this type of housing in areas guided for high density residential use located near transit hubs. The city would strongly consider applying for a CGPI grant to support proposals for this type of housing in areas guided for high density residential use. The city will ensure staff is familiar with resources provided by the Carver County CDA and Minnesota Housing Finance Agency which can assist developers in creating viable affordable housing projects. The city would not adopt dedicated tax levies. The city code does permit up to a 25% increase in the net density for a project featuring affordable housing. The city has and will continue consider using TIF to support proposals for this type of housing in areas guided for high density residential use. The city would be unlikely to use tax abatement to support new construction. The city would support the issuance of housing bonds; through the Carver County HRA. The city would not engage in site assembly. The city would be unlikely to use tax abatement to support new construction. The city would support the issuance of housing bonds; through the Carver County HRA. The city would support the issuance of housing bonds; through the Carver County HRA. The city would not adopt dedicated tax levies. The city code does permit up to a 25% increase in the net density for a project featuring affordable housing. Identified Need Available Tools Circumstances and Sequence of Use City of Chanhassen 2040 Comprehensive Plan65 City of Chanhassen 2040 Comprehensive Plan66 Chapter 4NaturalResources City of Chanhassen 2040 Comprehensive Plan67 4 | Natural Resources At a Glance » 140 acres are currently managed for invasive species such as buckthorn, wild parsnip, garlic mustard, and black locust. » The Chanhassen tree inventory has compiled over 6,000 open grown, individual trees on public property. » A single mature tree can retain as much as the first two to four inches of rainfall » Home values can increase by as much as 12 percent if there are mature, healthy trees on the property » There are 504 public trees along West 78th Street from downtown to west of Hwy 41 » Chanhassen has 50 different species of trees planted along its streets and in its parks. » Much of the soil within Chanhassen are loams and clay loams which have high water-holding capacity. » The emerald ash borer threatens 25 percent of the city’s public trees. Natural resources in the City of Chanhassen serve many purposes. They offer recreation on lakes, trails and parks, respite from busy lives, and remediation of development consequences. Collectively, the woods, wetlands, streams, rivers, and prairies contribute to a high quality of life for Chanhassen residents and visitors. The City of Chanhassen recognizes this important value and works to protect and enhance these natural features for the benefit of all. This chapter of the Comprehensive Plan outlines accomplishments, challenges and future goals for the city’s natural resources. In conjunction with ongoing development, the city has continued to make preservation of natural resources a priority. While directly improving the quality of life for Chanhassen residents, the city’s natural resources also indirectly enhance this community by offering environmental benefits. Collectively, ‘green infrastructure’ such as trees, wetlands and open space provides significant economic value by offering stormwater management, heat island reduction, erosion control, carbon sequestration, energy savings and increased property values. Protecting and enhancing the city’s green infrastructure is an investment in the community’s well-being as well as its future sustainability. 4.1 | Introduction As time goes on and communities grow and change, so too do their goals and challenges. For Natural Resources in Chanhassen, the emphasis has shifted to resiliency and sustainability from acquisition and documentation. While there are still open spaces that could become public amenities, management of the existing public lands has taken center stage and requires not only current responses but also long term planning. As the few remaining large piec- es of private property are developed, the tapestry and function of the city’s natural resources becomes solidified. Management and protection strategies are being revised to reflect the need for high-functioning natural resources that not only provide aesthetics and recreation, but also stormwater management, energy conservation and diversi- ty. Valuable natural resources must also be functioning resources. Green infrastructure is now a necessary part of a well-managed community that brings tangible and intangible benefits to every facet of the community. The natural resources challenges over the next decade encompass a broad spectrum from localized invasive species control to regional stormwater management. It will take vision and commitment to protect and enhance the natural resources in Chanhassen. The city’s land use policies should recognize that natural areas and open space are long term uses in our community. The city’s ordinances should reflect best management practices for trees, water and soil. The city’s goals and policies should serve to protect and enhance our natural resources. City of Chanhassen 2040 Comprehensive Plan68 4.2 | Urban Forests and Forestlands Chanhassen: meaning ‘tree of sweet sap’ in the Dakota language. The Minnesota Land Survey of 1830 document- ed that Chanhassen was located in the Big Woods, one of three major ecosystems in the state. The Big Woods was a massive area of forests dominated by sugar maple and basswood trees that stretched from the Minnesota River northwest to the Red River Valley. The trees were punctuated by wooded wetlands and open marshes around the many lakes. In time, the rich soil and plentiful timber gave rise to agriculture and development in the area. Much of Chanhassen, perhaps nearly all, was cleared of forests to create agricultural fields and homesteads. Along bluffs and in scattered remnants, the remains of the Big Woods existed. Today, pockets of mature woods with sugar maple and basswood trees allow visitors to envision the historical Big Woods. Ownership of these remnant woods today is a mix of private and public. Camp Tanadoona and private property to the west of Lake Ann comprise the ownership of large tracts of high quality woods. Park land belonging to the City of Chanhassen and Carver County encompass numerous acres of Big Woods and allow community members to be immersed in a wooded environment. 4.2.1 | Chanhassen’s Urban Forest While no one would consider Chanhassen to be ‘urban’, it does contain an ‘urban forest’ – the many trees that line our city streets, shade our playgrounds and parks and dot the yards of every neighborhood. These trees make up a significant portion of the overall tree cover in the city. They provide multiple and important benefits to the health and economic viability of Chanhassen. Trees increase home values, decrease energy costs, reduce stormwater runoff, provide clean air, sequester carbon, keep people healthy, provide wildlife habitat and enhance community aesthetics. These benefits rise along with the percentage of canopy cover in a community. Currently, the city averag- es about 30 percent tree cover. Optimal tree cover depends on the intersecting aspects of costs, community desires and services provided by trees. Chanhassen has many opportunities to increase canopy cover throughout the city. At a minimum, the city should maintain the overall 30 percent cover and strive to increase it in specific areas that fall short. The city benefits from city ordinances that require tree planting in new developments to assist in replacing lost canopy. Depending on the type of proposed development, tree preservation or replacement plantings in new con- struction must meet an overall canopy goal for the site. The percentages of cover range from 28 percent to 68 per- cent based on the existing conditions of the site and the Comprehensive Plan designation for the site. This ordinance is intended to maintain a minimum canopy coverage for the community. Other programs by which the city adds new trees to the community includes the annual tree planting program for Arbor Day and tree coupons given to residents. Programs such as these work to maintain tree cover, but more can be done. 4.2.2 | Diversity is Key Planting trees to increase canopy cover must be a well-intentioned and well thought-out process. “The right tree in the right place” is not only a catchy phrase, but advice that provides a long term return on the investment. Plant- ing with the intention of seeing that trees grow to maturity and beyond is a cost-effective process that places trees suited to the specific environment in the right places. There are several considerations to make when selecting trees and creating planting plans. Along with selections for height and size, the type of tree is also important. Species diversity will be the key to a sustainable urban forest. At a minimum, the city follows the 30-20-10 rule. No more than 30 percent of trees from any one family, no more than 20 percent of tree from any one genus and no more than 10 percent from any one species. In other words, no more than 30 percent of trees from the Betulaceae, or birch, family; no more than 20 percent of trees from the birch genus, and no more than 10 percent of trees should be paper birch species. A more conservative approach would be to reduce the quantity totals to 20-10-5. A diverse urban for- est is more resilient to pests and diseases. An analysis of the current public tree inventory revealed that the city has overplanted ash and maples. Spruce trees are also too common. Future plantings do not include ash trees at all and have very limited additions of maple trees as well. With the mainstay tree species selection out of the running, new City of Chanhassen 2040 Comprehensive Plan69 choices need to be added. Climate change is promising to expand the palette of tree selections by opening up lists of trees previously not cold hardy in Minnesota. These new selections will be necessary to maintain diversity for our city forest. 4.2.3 | Specifications Additionally, planting specifications are important to the long term sustainability of the city’s urban forest. If the tree is planted improperly, then all the time, money and resources are wasted. Planting specifications that are up-to-date with current research and industry innovations need to be included in all public and private landscaping projects. Chanhassen’s clay soils are unforgiving when it comes to planting depth. Planted too deep, a tree will struggle to thrive. Soil compaction exacerbates the problem so in new developments it can often be challenging to maintain a healthy landscape. 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Ln.Ce ntury Ct Century PlArboretum Village Crv ArboretumVillagePl.W78THStreet Murray Hill Crt La k e Drive P o n d Promenad ePipewoodCurvePipewood LanePipewoodCurve Leslee Curve EmeraldLane RubyLaneTopaz Drive Ridgeview Poin t WaterTowerPlace VassermanTr RidgeviewWayRidgeview Way Mohawk DrPawnee DriveArbor La ne WashtaBayCt DartmouthDrive Ridgehill RdTristinK n oll TristinDrive Wash ta B ayRoad KNOBHILLLANE Vasser manTrailVassermanPlace Hickory Rd Hickory Road Shenandoah GoldenCourtTreetop RoadMill Creek LnKings Road Kings RoadPipewoodCrt PipewoodCir W79thSt Great Plains BlvdGreat Plains BlvdStellersCtPinehurstDr Amberwood La ne Alder Way Fox DrLakeHarrison Circle Lake HarrisonRoad HighoverTrail Galpin Court Lo ng acres DriveArrowheadLnGunflintTrailHighcrestCirHighoverDrHighoverCrtNPipewood Lane StonefieldLaneBl uf fC ree kB lv dColonial Ln Plymouth Ln Freedom LnIndependen ce CirIn d ependenceCirHorseshoe LnB laze TrlB lu ffCreekBlvdEllendale LnPembrokePass DeglerCircle RiverRockDriveN78thStW BeaconCrtW atersEdgeD rWaters Edge DrFoxHollowCtCrossroad sBl vd ColumbiaLn Com m onwealthBlvd Bluff Creek BlvdHwy 101 Great Plains BlvdWestwood Dr Westw ood DrSouthwest Village Dr Sout hwest Villa ge DrApple Tree LaneBlu ffCre ek Driv e Mayapple P ass Hemlock Way Mills D rive Mills Drive Lake Riley DrHallgren Ct 6829RockyIslandLN Ril eyRidge Arrow-head Ct Refle ctionsRdChesterfieldLn M o to rp le x C tC oulterBoulevard Reflections RdBellevueCtLakevi ewRoadEDegler Circle Hemlock Way Hemlock Wa yCottongrass C tMarigoldCourt Wynsong LN Jeur issen Ln RiverRock Dr SRiver Rock Dr NRiverRockDriveS CamdenRidgeDrHenryCour tSout hWestVillage LoopStra wberryLaneStrawberry Lane F a wnHillRoad Preserve C tDegler LNRiver Rock Dr N StateHWY10 1 EagleRidgeR d HawkcrestCir HawkcrestC tEagle CtEagleRidgeRdCrossroad Ct AnthemPlace Maples (blue highlight) on public property City of Chanhassen 2040 Comprehensive Plan70 4.3 | Greenways/Natural Areas The Bluff Creek Corridor runs diagonally through the city connecting Lake Minnewashta with the Minnesota River. The entire watershed of Bluff Creek lies within city boundary lines and because of this, the city had the opportunity to shape the development and protection of the creek. The creation of a green way along the creek has presented opportunities for valuable development and recreational activities. Trail users benefit greatly from the connected web of corridors following Bluff Creek and its tributaries. There remain opportunities to connect areas in the water- shed. These preserved pieces vary in quality but not in value. The city should maintain these greenways and natural areas for native plant and animal habitats. The city should also set a goal to limit fragmentation of natural areas and maintain green corridors that connect open space. City of Chanhassen 2040 Comprehensive Plan71 Areas of Potential Greenways Lake Minnewashta Areas of Potential Greenways Bluff Creek Corridor Lakes City Owned Parks and Property Tax Parcel Other Parkland Minnesota River ² City of Chanhassen 2040 Comprehensive Plan72 4.4 | Soil Soil is one of the most important and complicated assets on any site. And yet, soil is treated at times as an easy thing to manipulate, replace or remove. Construction activities that prepare soil for the addition of a road, house or other non-living, artificial surfaces do significant damage to this resource. Then sod and trees are placed into these sites and expected to perform as though the activities never happened. Rarely, does this work out well. Visit most new neighborhoods and you’ll find struggling young trees and over-watered turf. The city has recognized this negative result and now requires the replacement of six inches of topsoil on every lot in each new development. With this quality soil, water retention improves, roots grow better, runoff takes longer and money is saved through reduced water use and landscape replacement. To gain even better results, soil reconstruction should be done in areas of heavy compaction. Breaking up the soil and rebuilding it with compost and tree planting will provide optimal ben- efits to any site. The city should reassess what measures could be taken during development to protect soils from compaction in the first place and rebuilding it when the protection isn’t enough. 4.5 | Biological Diversity and Invasive Species The significance of conservation areas to plants and animals cannot be understated. It’s critical for people, too, offer- ing valuable recreational and quality of life assets. Ideally, the City of Chanhassen should conduct a natural resource inventory. Currently, the Minnesota County Biological Survey Inventory done in 2000 is the only resources avail- able to assist in documenting what environmental assets may be present. The city should commit to protecting and managing any rare species and unique habitats noted in the survey. A current map, produced by the U.S. Fish and Wildlife Service, of habitat areas of high potential for the rusty patched bumble bee includes Chanhassen. Not only is this an endangered species but also a pollinator, a group of insects that provide vital services to our landscapes and food production. Chanhassen has the opportunity to address and commit to pollinator friendly practices. Most neighboring communities have already adopted city policies that benefit pollinators while incurring no additional costs or labor for the community. Chanhassen can help make an impact on protecting this crucial group of insects. All of our natural resources are under threat from invasive species. Whether aquatic or terrestrial, these invaders wreak havoc on local natural areas and community budgets. The City of Chanhassen should continue to work to manage terrestrial and aquatic invasive species to the best of its ability. Protecting our natural resources from these threats may come at a cost but the benefit of healthy, sustainable natural areas translates into higher real estate val- ues, reduced long term costs, greater quality of life, and more valuable natural assets. Examples of Invasive Species of Concern in Chanhassen Terrestrial Aquatic Insects/Animals Japanese Knot Weed Hydrilla Spotted Lanterfly Wild Parsnip Zebra Mussel Jumping Worms Water Hemlock Starry Stonewort Spiny Waterflea Narrowleaf Bittercress Flowering Rush Asian Longhorn Beetle Knapweed Emerald ash borer Nonnative Bush Honeysuckle Gypsy moth Common Tansy Black Locust City of Chanhassen 2040 Comprehensive Plan73 Endangered Species -Rusty Patched Bumble Bee Endangered Species - Rusty Patched Bumble Bee Habitat Area City of Chanhassen 2040 Comprehensive Plan74 Bluff Creek Vegetation City of Chanhassen 2040 Comprehensive Plan75 MBS Sites of Biodiversity Significance Outstanding High Moderate City Border Tax Parcel Lakes ² Areas of Biological Significance in Carver County City of Chanhassen 2040 Comprehensive Plan76 Arbor Day Tree Tags July 3rd Business Expo - Environmental Commission Table - Focus on Pollinators July 4th Recycling/Composting 4.6 | Education The City of Chanhassen acknowledges the importance of educational outreach in the implementation of its natu- ral resources goals and policies and desires to have the public engaged in the overall discussion. To help facilitate this goal, the city’s 7-member Environmental Commission is charged by the city council to promote and educate Chanhassen residents on the importance of natural resources. This volunteer commission works each year to provide opportunities for Chanhassen residents to learn more about the environment and become involved in the stewardship of it. City staff also endeavors to provide current, factual natural resources-related information to the public, utilizing various means of communication such as the Chanhassen Connection quarterly city newsletter and the city’s website and public events. The City of Chanhassen plans to maintain its current educational activities, as well as continue to expand its natural resources education program into the future. Future public education programs may focus on invasive species, water conservation, tree cover and diversity, and wildlife habitat. City of Chanhassen 2040 Comprehensive Plan77 4.7 | Resiliency As our weather continues to change and intense patterns are experienced more and more, the city is challenged to respond to extreme weather events that threaten public infrastructure, water and energy supplies, and public health and safety. Making a community more resilient to these threats is a process of adaptation and planning. Resiliency is an approach focusing on how well a community can respond to, and ultimately emerge from, climate change effects. One way for a community to increase its resiliency is by joining the GreenStep Cities program. Minnesota GreenStep Cities is “a voluntary challenge, assistance and recognition program to help cities achieve their sustain- ability and quality-of-life goals.” The requirements for becoming a recognized city vary according to the recognition level. To start, a city only has to pass a resolution committing to pursuing a Green Step City status. From there, cities complete a certain number of action items to progress to a Step 2 or 3. The city of Chanhassen endeavors to become a GreenStep City and adopt best management practices throughout the organization that strive to plan for mitigation of and adaptation to climate change impacts. 4.8 | Solar Energy In Chanhassen, certain areas have high potential as solar generation sites as shown in the figure below. Areas that have low potential have inadequate access to sunlight. Factors such as tree cover and slope direction play a signifi- cant role in the solar potential of a site. The city has prioritized tree planting before solar production therefore future public investments will be limited. The city has provisions in city code that accommodate private pursuit of solar energy on businesses and residences. The city is currently participating in two community solar garden contracts. These agreements account for 50 percent of the eligible electrical load from Xcel Energy. If desired, the city could purchase up to 110 percent of its energy from Community Solar Gardens. Chanhassen’s Solar Resource Calculations Community Gross Potential (Mwh/yr) Rooftop Potential (Mwh/yr) Gross Generation Potential (Mwh/yr) Rooftop Generation Potential (Mwh/yr) Chanhassen 28,456,130 1,663,295 2,845,613 166,329 City of Chanhassen 2040 Comprehensive Plan78 Gross Solar Potential City of Chanhassen, Carver, & Hennepin Counties City of Chanhassen 2040 Comprehensive Plan79 City of Chanhassen 2040 Comprehensive Plan80 Chapter 5Parksand Trails City of Chanhassen 2040 Comprehensive Plan81 5 | Parks and Trails System at a glance Over 900 acres of city-owned parks, preserves, and open space 30 community & neighborhood parks 14 preserves & 1 special use park Almost 80 miles of trails. Facilities 24 PLAYGROUND AREAS 17 PICNIC SHELTERS 5 SWIMMING BEACHES 15 TENNIS COURTS 10 PICKLEBALL COURTS 28 DIAMOND FIELDS 22 RECTANGULAR FIELDS 19 BASKETBALL COURTS 5 SLEDDING HILLS 4 SAND VOLLEYBALL COURTS 1 SKATE PARK 1 DISC GOLF COURSE 1 GARDEN PLOT SITE 7 DOCKS & 3 FISHING PIERS 5 OUTDOOR HOCKEY RINKS & 4 PLEASURE RINKS 1 DOG PARK (IN PARTNERSHIP) 1 RECREATION CENTER Chanhassen’s Park and Recreation System is a source of community identity and pride that greatly contributes to residents’ quality of life. The city has historically and will continue to place a strong emphasis on parks and recreation. In the 2016 National Citizen Survey, resi- dents indicated that they highly value Recreation and Wellness op- portunities in Chanhassen and ranked the city’s health and wellness, recreational and fitness opportunities, and preventive health services to be higher than other communities across the country. The survey also indicated that 9 out of 10 residents frequently make use of the city’s wide array of recreational opportunities. The Park and Recreation section of the 2040 Comprehensive Plan provides an overview and analysis of the city’s existing system, iden- tifies goals and policies that will guide park and recreation decision making over the next 20 years, and establishes key initiatives that will complete and enhance the current system. Chanhassen’s Parks and Recreation System Plan is a separate document that provides a more detailed overview of where the city’s park system currently stands and how it will evolve into the future. The System Plan can be accessed from the city’s website. By the Numbers » 12 community events » 250 park programs offered » 1,373 watercraft rentals » 5,123 ice rink visitors » More than 7,900 senior center participants » 15,000 group picnic participants » 24,400 swimmers at Lake Ann City of Chanhassen 2040 Comprehensive Plan82 5.1 | System History Chanhassen’s parks and recreation system is the result of almost 50 years of planning and city and citizen commitment. In addition to adding parks and trails to the system in conjunction with development, the community has supported major park improvement initiatives throughout the years. Three major bond referendums over the system’s history have allowed for major parks and recreation improvements. The first bond referendum for parks was passed in 1969, resulting in the acquisition of Lake Ann Park, the beginning of the neighborhood park system; and the preservation of community character that is enjoyed by residents to this day. 1988 saw the second bond referendum, which funded phase two of Lake Ann Park as well as the purchase of park land in the southern half of the city. Another referendum was passed in 1996, resulting in improvements in 18 parks system-wide; the construction of Bandimere Park; the reconstruction of City Center Park; preservation of over 40 acres of open space; and 7 miles of new community trails. 5.2 | System Components Today, the city’s park and recreation needs are met by a combination of city parks; city trails and sidewalks; school district facilities; private facilities; recreation programs; as well as non-city amenities including regional parks and trails and facilities in surrounding communities. Park Classification Park classifications are used to ensure that a park and recreation system has sufficient diversity and geographic distribution to serve various neighborhood and community needs. Chanhassen’s 30 parks comprise 888 acres of city land, providing 36 acres of parkland per 1,000 residents. These parks fall into four classifications: community parks, neighborhood parks, special use parks, and preserves. Community Parks Community Parks provide opportunities for city-wide recreation and typically serve a 1-2 mile area. They empha- size active recreation by providing amenities like ball fields and soccer/football fields. Chanhassen’s six community parks are distributed throughout the city and most residents live within an easy drive or bike-ride. There is an antic- ipated shortfall in community park land after the year 2020. Since most of the new residential growth is anticipated to occur in two areas; south of Lyman Boulevard and on the west side of Lake Ann, it makes sense to look for new community parks in these areas Chanhassen currently has six Community Parks, including Bandimere Park, City Center Park, Lake Ann Park, Lake Susan Park, South Lotus Lake Park, and the Chanhassen Recreation Center. City of Chanhassen 2040 Comprehensive Plan83 Lake Ann P ark Lake Susan Park Bandimere Park City Center Park Chanhassen Recreation Center South Lotus Lake Par k Kerber P ond P ark Pow er Hill Pa rk Riley Ridge P ark Nort h Lot us La ke P ark Meadow Green Pa rk Herman Field Park Pheas ant Hill Park Sunset R idge Park Stone C reek Park Pione er Pass Park Roundhouse Park Curry Fa rm s Park Chanhass en Hills Park Carv er Bea ch Park Cathc art P ark (O wne d by t he City of S hore wood) Sugarbush Park Prairie K noll Park Ric e Marsh La ke P ark Bandimere Heights Park Greenwood Shores Park Carv er Bea ch Playground Minnewas ht a Height s Park Chanhass en Es tate s Pa rk Chanhass en High School (J oint Fa cilities) Manchest er Park (To B e Com plete d in 2018) Mi n ne w a s h t a R e gi on a l P a r k U ni v e r s it y o f M in ne s ot a La n d s c ap e A r bo r e t u m R a gu e t W ild l if e Ma na g e m en t Ar e a Pr iv a t e l y O w n e d Pu bl ic G o lf C o u r s e MN Va l le y N a t i o na l Wi ld li f e R e fug e Ols on C ommunit y Garden Minnet onka Middle School West CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S treet Lyman Bou levard ChanhassenRoadCrosstow n B oulevard Pleas a nt Vi e wRoad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n eerT railW estL o n g a c resDriv eVictoriaDrive Arboretu m B o ule var d Powe r s Boul evardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 14 0 L ake DriveEast He ronDrive Engler Boulevard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPion eer Trail 82nd Street West F ly in g C lo u d D r iv e Chas k a B o u le v ardL akeDrive Pioneer Trail EastChestnutStreetNorthWest82ndStreet ")140 ")53 ¬«101 ¬«7 £¤212 ¬«5 ")61 ¬«101 ¬«101 L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeAn n L a keL ucyR i c e M a r shLake E d e n P r a i r i e E x c e l s i o r G r e e n w o o d M i n n e t o n k aShorewood T o n k a B a y J a c k s o n T w p . S h a k o p e e C h a s k a V i c t o r i a LEGEN D Op en Space Comm unity Park Neigh borho od Pa rk Preserve Specia l Us e No n-City Parks & Open Sp ac e Publi c Sch ool Surround ing M unicipal Park s Water Bod ies Muni cip al Bou ndaries °0 0.5 10.25 Mil es FIGURE 5-1 | City Park Distribution City of Chanhassen 2040 Comprehensive Plan84 Neighborhood Parks The goal of neighborhood parks is to provide informal recreational opportunities close to where people live. Chanhassen operates under the standard that all residents should be within walking distance, or a half mile, of a neighborhood park. The walking distance must also be free of major barriers like major roads or water bodies to count as adequate. Because community parks often act as neighborhood parks for the people living in close proximity, a half mile radius is applied to both neighborhood and community parks to identify any gaps in service. There are 23 Neighborhood Parks distributed throughout Chanhassen, 22 of which are city owned and operated. Cathcart Park is located within Shorewood, but acts as a neighborhood park for residents north of Lake Minnewashta. Special Use Parks Special Use Parks are used to identify park facilities and amenities that target a specific user group and are not associated with an existing park. Olson Community Garden is the city’s only Special Use Park, and is an extremely popular amenity in the community. Preserves Preserves function to protect the city’s high-quality natural space, and usually involve minimal low-impact develop- ment at most. The city currently owns almost 800 acres of open space protected throughout Chanhassen’s fourteen preserves. These acres encompass a large portion of the Bluff Creek Corridor, as well as other treasured wetland and woodland areas. 5.3 | Programming The City of Chanhassen offers a range of recreation and social programs for all ages. These currently include crafts, dance, and sports for preschool aged children; crafts, sports, self-defense, ski and snowboards, and dance programs for youth; programs serving individuals with developmental disabilities and their families; fitness and sports pro- grams for adults; community-wide events that occur annually; and educational programs, swimming, clubs, field trips, meal and driving programs for seniors. According to the Chanhassen Community Questionnaire, community events are the most popular type of program- ming offered by the city. Annual events hosted by the city and supported by area businesses include February Festi- val, Easter Egg / Candy Hunt, Arbor Day Celebration, July 4th Celebration, Fire Department Open House, Hallow- een Party, and Tree Lighting Ceremony. While these events are well-attended, there continues to be an interest for additional events throughout the year. The city has good working relationships with recreation groups and associations, who do a good job of providing a variety of programs. The city provides introductory level athletic programming for very young children (under 6) and team, league athletics (softball) for adults. There is a desire from some residents that the young athletic pro- gramming be improved in terms of structure and coaching. Additionally, interest has been expressed for more, older youth and adult programming in arts, fitness, and outdoor education. There is also desire from many residents for the city to provide programming, such as aquatics, to meet the needs of those who can’t afford private facilities, such as Lifetime Fitness. 5.4 | Trails Chanhassen’s 76 miles of city trails have been identified as the most popular facility provided in the communi- ty. This city-wide system helps connect neighborhoods to parks, schools, commercial and civic destinations, and adjacent communities. The city is committed to providing pedestrians and cyclists with safe crossings of major City of Chanhassen 2040 Comprehensive Plan85 roadways, and today there is a pedestrian bridge over Highway 5 as well as several underpasses city-wide. Natural surface trails are present in Fox Woods Preserve, and desire has been expressed to expand this network to create more low-impact connections between residents and natural areas. Several regional trails connect Chanhassen to surrounding communities and destinations, including the Lake Minnetonka LRT Regional Trail to the north and the Minnesota River Bluffs LRT Regional Trail to the south which has a parking area and trail head area off of Bluff Creek Drive. Both of these trail corridors are owned by the Hennepin County Regional Railroad Authority (HCRRA). A cooperative agreement between HCRRA and Three Rivers Park District allows the corridors to be used for recreational purposes. Figure 5.2 displays the city’s existing system of trails and sidewalks. Additionally, the Metropolitan Council has shown regional trail search corridors along Highway 101, Highway 41, Highway 5, CSAH 61, and the Twin City and Western Rail Corridor. 5.5 | Notable Facilities RECREATION CENTER The Chanhassen Recreation Center provides the community with year-round indoor and outdoor recreational facil- ities. The Recreation Center is a focal point for many of the city’s community events and recreation activities and programs. The staff at the Recreation Center takes pride in providing a fun and friendly atmosphere for people of all ages at an affordable price. Facilities at the Recreation Center include a gymnasium, fitness room, aerobics/dance studios, five meeting rooms, and outdoor ball fields, tennis and pickleball courts, and hockey/inline skating rinks. Due to the popularity of the programs (especially dance) and the lack of meeting space throughout the community, the Recreation Center is often completely rented out. Senior Center Chanhassen’s Senior Center is a popular and highly utilized amenity for retirees, and is centrally located within the City Hall. The Senior Center provides senior programming including woodcarving, field trips, art and education classes, health and wellness programs, and card playing. Nutrition The CAP Agency Senior Nutrition Program provides nutrition options to Chanhassen seniors age 60+. Through congregate dining, seniors enjoy hot, nutritious meals Monday through Friday at 11:30 am at the Senior Center. Home delivery of meals is also provided. Friendly volunteers will deliver hot, nutritious meals right to resident’s door. This service is available Monday-Friday to seniors who are considered homebound, those recovering from surgery, or more long-term purposes. Menus include gluten-free, low-sodium, or reduced-calorie dessert options. Act on Alzheimer’s In 2015, Chanhassen began the initiative to become an ACT on Alzheimer’s community. There are more than 5 million Americans living with Alzheimer’s disease. These numbers are set to soar as the baby boomers continue to enter the age of greatest risk for Alzheimer’s disease. The projected growth of Alzheimer’s has created a public health crisis and Minnesota is taking action. In 2009, the Alzheimer’s Association and our advocates led legislation to create a State Government Alzheimer’s Disease Plan for Minnesota, which launched the formation of Act on Alzheimer’s. With over 60 nonprofit, governmental, and private sector organizations, Act on Alzheimer’s serves as a volunteer-driven, statewide collaboration who are preparing Minnesota for the impacts of Alzheimer’s disease and other dementias. We have come together – community members, health care providers, government officials, caregivers, people with Alzheimer’s, academics, and businesses – to better support individuals with Alzheimer’s disease and their families. City of Chanhassen 2040 Comprehensive Plan86 NON-CITY FACILITIES There are several non-city recreation facilities located in Chanhassen. The locations of these facilities are highlighted in purple in Figure 5-1. Schools (ISD 276 & 112) The public schools in Chanhassen partner with the city to offer facilities for public use outside of school hours. The city has agreements for shared use at Chanhassen High School for school athletic fields. Bluff Creek Elementary School shares facilities with Chanhassen Recreation Center, while Chanhassen Elementary School shares facilities with City Center Park. While there is not a specific shared use agreement, Minnetonka Middle School West’s facilities assist in addressing needs for surrounding residential neighborhoods. Lake Minnewashta Regional Park This 340 acre Regional Park on the east side of Lake Minnewashta is owned and operated by Carver County with support from the Metropolitan Council. Facilities include lake access, a fishing pier, picnicking, sand volleyball, a swimming beach, and trails. A new off-leash dog area was established in partnership with Carver County, the City of Chanhassen, and the City of Shorewood Parks Foundation. A vehicle entry fee is required; however, the park is free for those who arrive on foot or by bike. Camp Tanadoona Camp Tanadoona was started by the Minneapolis Camp Fire Girls in 1924 and consists of 63 acres of land on Lake Minnewashta, south of Lake Minnewashta Regional Park. Today the camp serves both boys and girls and offers overnight and day camps. MN DNR Lands The Minnesota Department of Natural Resources protects several areas of land within Chanhassen. An eight acre parcel on the east side of Lotus Lake is preserved as open space. The DNR also owns 106 acres of the 600-acre Seminary Fen wetlands complex in southern Chanhassen, which contains a Scientific and Natural Area (SNA) that encompasses 73 acres and protects a rare calcareous fen and threatened plant species. The remaining 33 acres were allotted to the adjacent Raguet WMA. Finally, the DNR owns public land surrounding Lake St. Joe, which is just south of Roundhouse Park in northwest Chanhassen. City of Chanhassen 2040 Comprehensive Plan87 Pleasant V iew Preser ve Ch a n ha s s e n Natu r e Preser ve Rice M arsh Lake P reser ve Bl uff Creek Preser ve Fo x W oo d s Preser v e Hesse Fa r m Par k Pre s e r ve Lake S u san Preser ve Pin e Hu rs t Preser ve Bl uff Cr e e k Preser v e No rt h La k e R i le y Pre s e r ve MN Ri ver Blu ff s Pre s e r ve Hidd en C reek Me a do ws Preser ve La k e S u s a n Preser ve No rt h Pi n e Hu rst a t Lake H arri so n Preser ve Bl uff Cr e e k Head wa te r s Preser v e CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S t reet Lyman Bou levard ChanhassenRoadCross t own B oulevard Pleas ant Vi e wRoad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n e erT railW estL o n g a c resDriv eVictoriaDrive Arboretu m B o uleva r d Powe r s Boul evardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 140 L ake DriveEast He ronDrive Engler Bo ulevard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPi oneer Trai l 82nd Street West F ly in g C l o u d D r iv e Chas k a B o u le v ardLakeDrive Pioneer Trail EastChestnutStreetNorthWest82ndStreet ")140 ")53 ¬«101 ¬«7 £¤212 ¬«5 ")61 ¬«101 ¬«101 L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeAn n L a keL ucyR i c e M a r shLake E d e n P r a i r i e E x c e l s i o r G r e e n w o o d M i n n e t o n k aShorewood T o n k a B a y J a c k s o n T w p . S h a k o p e e C h a s k a V i c t o r i a LEG END Op en Spa ce Preserve Exis ting S idewa lk Exis ting Trail No n-City Pa rks & Open Sp ace Publi c Sch ool Exis ting Regio nal Trails Surround ing Munic ipa l Trai ls Water Bod ies Municip al Bou ndaries °0 0.5 10.25 Mil es FIGURE 5-2 | Trails, Sidewalks, and Open Space City of Chanhassen 2040 Comprehensive Plan88 Minnesota Valley National Wildlife Refuge There are approximately 60 acres of the Minnesota Valley National Wildlife Refuge within the city. The refuge was established in 1976 to provide habitat for migratory waterfowl, fish, and other wildlife species. Today the refuge is comprised of 14,000 acres stretching 45 miles from Fort Snelling State Park to Belle Plain, Minnesota. While some areas of the refuge have trails and interpretive signs, there are no public recreation facilities in Chanhassen. Raguet Wildlife Management Area (WMA) The Raguet Wildlife Management Area encompasses 270 acres, 190 of which are located in Chanhassen. The WMA is entirely within the floodplain of the Minnesota River. Natural communities include floodplain forest, wetland areas, and grassland. The management emphasis is maintaining and improving habitat for wetland species. The only public recreation access is for hunting. The Minnesota Landscape Arboretum The Minnesota Landscape Arboretum is a 1,000 acre facility, 675 acres of which are located in western Chanhassen. The Arboretum is a unit of the University of Minnesota and is a public botanical garden and an education and research institution. It features display gardens and exhibits, model landscapes, restored native landscapes, plant research plots as well as extensive plant collections, and hiking and cross country skiing trails. Educational offerings include chil- dren’s programs, family activities, adult education, therapeutic horticulture, and the Anderson Horticultural Library. The Arboretum hosts several public festivals every year as well. A fee is required for use. Golf Courses There are three privately owned Golf Courses within the City of Chanhassen, all located south of Pioneer Trail. Bluff Creek Golf Course is a 228 acre 18 hole course, Hall Greens is a 45 acre 9 hole course, and the Golf Zone is approximately 100 acres just north of the Raguet WMA and includes an all-weather driving range, putting and chipping greens, a 9 hole course, and a 18 hole putting course. 5.6 | Trends In order to keep pace with the demands of a growing population, the City of Chanhassen needs to consider how the dynamic nature of technologies, trends, cultures, and activities will affect facility and programming needs. By building flexibility into the city’s recreation and park facilities by considering the implications of trends, Chanhassen will be able to adapt quickly and efficiently in order to meet these new demands. The following trends are relevant to the future of Chanhassen’s parks and recreation: » Desire to create more memorable experiences » Increased importance of ‘place’ » Desire for conservation & natural connections » Demand for green alternatives » More transient » Pinched government budgets » Increased interest in aging actively » Engaging new generations » Increased interest in weight loss & active living » Rise in informal adult recreation versus league participation » Popularity of new & nontraditional sports » Demand for group fitness events & races » Need for convenience » Increasingly anxious about safety City of Chanhassen 2040 Comprehensive Plan89 5.7 | Needs Assessment Key Findings To understand the state of Chanhassen’s Park and Recreation System, the system planning process involved con- ducting a critical evaluation of the city’s existing conditions, peer communities, national standards and trends, best practices, and community input. These analyses identified current and future needs and desires, which subsequently guided the development of guiding principles and goals, policies, and initiatives that work together to guide the future of the system. The evaluation process included: » Meetings with the City Staff, Advisory Committee, Park Board, and the City Council » Two phases of community input to gather feedback on existing conditions and future desires – Seven Community Pop-Up Events – Athletic Association Stakeholder Meeting – Senior Stakeholder Meeting – Three Online Community Questionnaires – Two Online Social PinPoint Maps – Community Open House » Evaluation of the entire system of parks, trails, natural resources, connectivity, programs, and facilities including an update of the Park System Inventory » Demographic analysis » Evaluation of current park classification system and standards » Evaluation of service areas, future growth, and development needs » Identification of issues and opportunities at a system-wide level » Comparison of existing supply, quality, and distribution of features and facilities to national standards and to peer communities » Evaluation of emerging trends influencing future needs of the system The following are key findings that summarize what was learned throughout the needs assessment process. Parks » Chanhassen’s 30 parks provide about 36 acres of parkland per 1,000 residents, which exceeds the national standards as well as that of surrounding communities. With the expected population growth of over 10,000 new residents in the next 10 to 20 years, the city should continue to look into expanding the number and distribution of parks as opportunities arise. Emphasis should be placed on currently underserved areas, as well as future areas anticipated to be developed with medium and high density housing. » Partnerships with school district have contributed positively to availability of facilities and efficiency of operations. » At existing parks, user amenities like lighting, benches, grills, wifi, and permanent restrooms were suggested as potential improvements Facilities » Chanhassen currently provides a diverse, well-distributed range of park and recreation facilities. » The amount of playgrounds in Chanhassen is consistent with that of surrounding communities, and is within an acceptable range for anticipated population growth. » A desire of the community identified in the engagement process was for the inclusion of natural playscapes, which are play areas either made with natural materials or made to look like nature. The incorporation of natural playscapes can be addressed through replacements, upgrades, and when new construction occurs. City of Chanhassen 2040 Comprehensive Plan90 » The city has sufficient traditional athletic facilities, like diamond fields (baseball, softball) and rectangular fields (soccer, football, lacrosse), for both current and projected population figures. However, an analysis of field sizes finds that many of the existing diamond and rectangular fields are not large enough for adult games so ensuring a mix of field sizes is an important consideration moving forward. Future development should consider how to serve areas in the north, south, and west not otherwise served by non-city facilities. » During the community engagement process, residents expressed a desire for amenities that improve the quality of their playing and viewing experience. This includes lighting, permanent restrooms, and seating. » Informal sport facilities, like tennis, basketball, sand volleyball, pickleball, and open fields, are well-distributed throughout the community. » While the amount of aquatic facilities is on par with those of surrounding communities, all of the facilities are beaches. The community has expressed a strong desire for additional aquatic facilities like an outdoor pool, an indoor pool, and splash pads. » The Recreation Center and Senior Center provide year-round, indoor recreation opportunities. Community input has indicated that the current facilities are not sufficient. Residents desire a signature recreation facility that provides indoor facilities like a running/walking track, a larger fitness center, an indoor/outdoor pool, meeting spaces, family activities, and additional fitness classes. Additionally, interest was expressed in improving the Senior Center by expanding awareness and adding more active recreation offerings, fitness facilities and meeting spaces. » A key focus over the next 20 years should be the maintenance and replacement of aging facilities. Preserves and Open Space » Most residents are happy with the amount of perceived natural open space throughout the city and many would support additional preservation. » While the vistas created by open space are valued, desire was also expressed for increased access so users could better experience natural areas, particularly around Lake Ann and within the Bluff Creek Corridor. Trails » Chanhassen’s 76 miles of trails have been identified as the most popular facility provided in the community. » Safe crossings were a topic discussed throughout the system planning process. Currently the city has a pedestrian bridge over Highway 5 as well as more than ten underpasses city-wide. » In addition to safe crossings, trail users requested additional amenities to improve their trail riding experience. These requests include benches, wayfinding, and lighting to enhance safety and extend year-round use. » Currently there are natural surface trails in Fox Woods Preserve, Carver Beach Park, Lake Ann Park, Carver Pond Park, and Stone Creek Park. Community members expressed a desire for additional natural surface trails, particularly as a way to further explore natural areas, whether in preserves or parks. Programming » The City of Chanhassen offers a range of recreation and social programs for all ages. There is a desire from some residents that the young athletic programming be improved in terms of structure and coaching. Additionally, interest has been expressed for more older youth and adult programming in arts, fitness, and outdoor education. There is also desire from many residents for the city to provide more programming, such as aquatics, to meet the needs of those who prefer public recreation programs. » According to the online system-wide questionnaire performed in Fall of 2016, community events are the most popular type of programming offered by the city. While these events are well-attended, there continues to be an interest for additional events throughout the year. » The city has good working relationships with recreation groups and associations, who do a good job of providing a variety of programs City of Chanhassen 2040 Comprehensive Plan91 » Improved amenities that support events, like picnic shelters with amenities to support food preparation, would help encourage existing and future programming. Management and Operations » There are concerns about deferred maintenance issues, especially in small neighborhood parks (playgrounds, basketball courts, hockey rinks). » Concerns also existing surrounding the maintenance of natural resources and lake water quality. » Ongoing investments will be required to maintain the quality of the existing system into the future. 5.8 | System Plan The system plan recommendations were drafted based on the findings from the needs assessment, peer community and national standards analysis, community input, review of the previous Comprehensive Plan, Advisory Commit- tee discussions, and meetings with city staff. The recommendations are organized into goals, policies, and strategies. Goals are broad statements that describe the desired long-term outcomes needed for the system’s guiding principles to be achieved. The next level, policies, are statements that will guide city decision-making to achieve the goals. Policies are followed by initiatives, which describe the specific actions or steps that need to be taken. To support and further clarify the initiatives, maps have also been attached to illustrate recommendations relative to parks, facilities, preserves, and trails. A set of precedent imagery has also been prepared to help illustrate what some of the proposed new facilities may look like. Vision & Guiding Principles As the City of Chanhassen develops and changes over the course of the next 20 years, its Parks and Recreation System must likewise evolve. New opportunities will present themselves, as will new challenges. Sustaining a desirable park and recreation system through this evolution will require a set of guiding principles based on the community’s shared vision. These guiding principles provide an over-arching framework that informs the development of specific goals, policies, and initiatives. They are also a tool for future decision-making, serving as a yardstick to measure the results of this plan and the appropriateness of future initiatives. Stewardship Stewardship is one of the hallmarks of Chanhassen’s Parks and Recreation System. An extensive network of preserves gives residents the opportunity to explore and learn about Chanhassen’s rich web of natural resources. Greater awareness of Chanhassen’s prairies, wetlands, lakes, rivers, forests, and wildlife has led to a greater understanding of the role those resources play in making the community a great place. Chanhassen’s citizens have embraced their role as stewards of their city’s natural resources. They understand the need to conserve Chanhassen’s natural resources so they will continue to enrich future generations, and they advocate continuing to incorporate sustainability practices such as sustainable design, native plant diversity, and ecological maintenance into the system’s planning and daily operations. Connectivity Connectedness is at the heart of Chanhassen’s Parks and Recreation System. The system itself is connected; its parks, preserves, and trails knitted together to create a network of recreation and open spaces that reaches every corner of the community. This network connects residents, neighborhoods, and destinations to one another, strength- ening the community and enabling all to enjoy safe, easy, and convenient travel throughout the community and to neighboring cities. Likewise the system’s facilities and programs not only connect residents to one another, but they also connect residents to the outdoors and to Chanhassen’s wealth of natural resources. City of Chanhassen 2040 Comprehensive Plan92 Engagement Chanhassen’s Parks and Recreation system welcomes residents of all ages and all abilities, enabling them to lead active, healthy lives in which they engage with the outdoors, with art and culture, and with one another. Partnerships with private entities, neighborhood and community organizations, athletic associations, user groups, businesses and schools have created a sense of shared ownership and pride across segments of the community, leading to active participation in system planning, operation, and maintenance. The system’s high quality facilities and programs are a source of community pride that inspire life-long discovery, learning and socializing. Adaptable As Chanhassen has evolved, becoming a larger, more economically and culturally diverse community, its Parks and Recreation System remains adaptable in the way it responds to new needs and challenges and dynamic in its ability to deliver high-quality programs, facilities and services. Increased partnerships with groups, organizations, and business- es representing all segments of the community have resulted in new and diverse sources of funding and an infusion of new ideas, energy and enthusiasm. These partnerships have increased the system’s versatility, enabling staff and volunteers to adjust to lifestyle changes, respond to new trends, and enhance the system’s quality and efficiency. Goals & Policies The System Plan’s goals and policies are high-level statements intended to guide city decision-making over the next 20 years. The six goals represent the desired long-term outcomes of Chanhassen’s System Plan, and were prepared as depictions of how the Parks and Recreation System will function when the guiding principles are achieved. To guide city decision-makers, the general characteristics of each goal are described by a series of policies. In the System Plan hierarchy, goals are the highest level and are numbered 1-6, while policies are number red 1.1, 1.2., etc. so it is clear to which goal a specific policy relates. Goal 1. Provide a comprehensive system of park, recreation and open space facilities to serve active and passive needs. 1.1. Provide a system that includes neighborhood parks, community parks, preserves and special use parks based on the standards outlined in Table 6-1. 1.2. Ensure residents have convenient access to park and recreation facilities at the neighborhood and community park level by ensuring all residents are within a ½ mile of a neighborhood park and 2 miles of a community park. 1.3. Provide a mix of athletic complexes with user amenities to meet the needs of recreational, league and tournament play. 1.4. Provide user amenities as appropriate for the type of park. 1.4.1. To serve local users walking or biking to their neighborhood park, provide user amenities like benches, bike racks, shade trees, trash and recycling receptacles and seasonal restrooms. 1.4.2. To serve community and regional users, provide at community parks amenities like benches, picnic tables, bike racks, information kiosks, shelters, permanent restrooms, trash and recycling receptacles and access to technology. 1.5. Balance the use of park and recreational facilities for local needs with events, tournaments, gatherings and programming. 1.6. Support year-round recreation through a mixture of indoor and outdoor facilities. 1.7. Explore opportunities to expand the number and quality of the community’s preserves to protect natural areas that are ecologically sensitive or representative of the city’s natural heritage. 1.8. Provide areas for small and large group community gathering through the distribution of shelters in neighborhood and community parks. 1.9. Seek opportunities to distribute separated, 2 to 5 year old playgrounds throughout the community. City of Chanhassen 2040 Comprehensive Plan93 2040 Regional Trail Search Corridors The Metropolitan Council has estab- lished general search corridors for new regional trails or extensions of existing regional trails. These cor- ridors were designated in order to create connections between regional parks and trails. The map below displays regional trail search corri- dors that intersect with the City of Chanhassen. While corridors have been identified, the specific align- ment of the regional trails will still need to be determined through a planning process led by the regional park implementing agency. L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeA n n L a keL ucy¬«101 ¬«7 ¬«212 ")140 ")53 CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S t reet Lyman Boulevard ChanhassenRoadCros st own B oulevard Pleas a nt Vi e wRoad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n e erT railW estL o n g a c resDriv eVictoriaDrive Arb oretu m B o ule var d PowersBoulevardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 140 L ake DriveEast He ronDrive Engler Bou levard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPioneer Trail 82nd Street West M a rk e t BoulevardFlyin g Cl oud D r i v e Chas k a B o u le v ardLake Drive Pioneer Trail East High w ay 101ChestnutStreetNorthWest82ndStreetLEGEND ""Ov erpass ##Trail Head !!Underpass Exis ting, Sid ewalk Futu re , Sid ewalk Exis ting, Trai l Futu re , Trail Open Spa ce Community Pa rk Ne igh borhood Park Preserve Spec ial Us e Non-City Pa rks & Op en Space Public Scho ol Water Bodi es Municipa l Boun daries Surround ing Mu nici pal Trails Surround ing Mu nici pal Parks Exis ting Region al Trails Re gio nal Tra il Search Corridor Re gio nal Tra il - 2040 Sys tem Additio n 2030 Planned Land Use Med ium/Hig h Density Res idential Low Densi ty Residential Large L ot Residential °0 0.5 10.25 Mile s Regional Search Corridors FIGURE 5-3 | Regional Trail Search Corridors City of Chanhassen 2040 Comprehensive Plan94 Goal 2. Maintain a comprehensive and easily navigable trail and sidewalk system that connects neighborhoods to park and recreation facilities, schools, community destinations and other communities. 2.1. Prioritize the elimination of trail gaps based on safety, connectivity and cost. 2.2. Create trails within preserves. 2.3. Improve the trail user experience through improved maintenance, wayfinding and amenities (i.e. benches, trash cans, etc.) in neighborhoods to enhance connections to surrounding amenities. 2.4. Establish trails and sidewalks as a key transportation network in new development. 2.5. Explore opportunities to expand the trail and sidewalk system through neighborhoods to enhance connections to surrounding amenities. 2.6. Prioritize the construction of grade-separated crossings of roads for trails based on safety, demand and need warrants. 2.7. Preserve vacated or abandoned right-of-way for trail purposes. 2.8. Collaborate with local and regional agencies on the establishment of regional trails. 2.9. Partner with surrounding communities to create inter-community trail connections that enables users to travel to surrounding communities and regional trails without having to ‘jump’ between different trails and sidewalks. Goal 3. Ensure all residents have the opportunity to participate in recreation, education, cultural, and arts activities. 3.1. Strive to offer a diversity of programs at a variety of times to serve all age groups. 3.2. Explore art, culture and nature based programming and partnerships to serve non-athletic community needs. 3.3. Program and support partners’ events to draw residents to park and recreation facilities. 3.4. Encourage, partner with, and support existing associations, clubs and groups to fill programming gaps that the city cannot fill. 3.5. Expand partnerships with local schools to serve community needs. Goal 4. Be a leader in environmental sustainability. 4.1. Preserve remaining natural areas as opportunities arise. 4.2. Support park users’ efforts by offering recycling and/or composting. 4.3. Manage the use of pesticides within parks. 4.4. Explore opportunities to convert existing turf areas to native plantings. 4.5. Reduce impacts on lakes, waterways, and groundwater by incorporating stormwater best practices in park and facility design. 4.6. Use sustainable building practices when developing, expanding or renovating facilities. 4.7. Improve energy efficiency when renovating or constructing new facilities. 4.8. Use native trees/shrubs planted in appropriate locations to conserve energy. 4.9. Raise public awareness of the importance of sustainability and the city’s efforts through social media, interpretation, and educational programming. Goal 5. Proactively plan for a high quality, efficient parks and recreation system that meets community needs. 5.1. Encourage parks to be defining features of neighborhoods through the placement of parks in a visible location and the establishment of connecting trails and sidewalks. 5.2. Encourage participation by neighborhoods, community groups and local artists in the planning for and development of park and recreation facilities. Identify locations for unique features or improvements to avoid a system of “cookie cutter” parks. 5.3. Enhance users’ experiences through well-designed exterior environments/places that give consideration to how all members of the public can engage in these spaces in different ways (educational, cultural performance, artistic, etc.), how places can be interconnected throughout the community, and how lighting contributes to inviting spaces. As part of design process, seek opportunities to use artist-created park features rather than standard catalog pieces. City of Chanhassen 2040 Comprehensive Plan95 5.4. Encourage the use of the park system for performance art, temporary art installations and public art. 5.5. Explore opportunities to reconfigure or improve efficiencies within existing parks to serve identified community needs. 5.6. Maintain and routinely review field management plan to ensure high quality fields through rotational resting of fields based on a schedule/ level of use and postponement of use during and after significant rain events. 5.7. Continue strong partnership and communication with local associations, clubs, and other organizations to ensure facilities are meeting their needs. 5.8. Integrate trails into the planning and design process for public improvements and land development. 5.9. Design parks and facilities to address active and passive needs while giving consideration to the environmental context, surrounding land uses, and future maintenance and operational needs. 5.10. Establish and routinely update a sustainable operations, maintenance and replacement schedule for all parks and facilities with particular attention on playgrounds, basketball courts, tennis courts, pickleball courts, shelters, etc. 5.11. Collaborate with Engineering Department on trail pavement management program. 5.12. Explore partnership opportunities for capital improvement costs and life-cycle system costs. 5.13. Maintain current management of fields as demand continues to increase. 5.13.1. Rotational resting of fields based on a schedule/level of use. 5.13.2. Postponement of use during and after significant rain events. 5.14. Continue to support the stated goal of parks in Chanhassen to reasonably meet city needs and promote a sense of community: 5.14.1. Expand the capacity of the athletic facilities through improvements and efficiencies within existing community parks. Goal 6. Implement strategies to increase the city’s capacity to maintain and expand the parks and recreation system. 6.1. Identify and expand partnerships with area recreation associations, clubs and groups; local businesses; private organizations; neighborhood groups; and other public agencies. 6.2. Utilize our facilities to capitalize on opportunities to generate revenue. 6.3. Evaluate options to expand the use of volunteers to support park operations and programming. 6.4. Explore seeking voter approval to issue bonds or levy a tax to expand or support the needs of the park and recreation facilities and system. 6.5. Encourage property owners interested in donating or granting conservation easements on their land. 6.6. Support the creation of a non-profit parks and recreation foundation. Classification Use Service Area Size (Typical)Examples Community Provides facilities serving the community with programmed, active recreation areas and access to natural areas. May serve regional visitors, although not as primary function. Community wide in strategic, consolidated locations at a few sites 15 to 100 acres Lake Ann Park, Bandimere Park Neighborhood Primary recreation facility to meet the day-to- day needs of neighborhoods. Provides active recreation and informal gathering spaces for families and groups of neighbors. Fields are sized for practice/youth games. 1/2 mile radius, free of major barriers such as highways or waterways <15 acres North Lotus Lake Park, Pioneer Pass Park Preserve Areas focused on the provision of natural environments, passive recreation, and ecological education. Community & Regional Draw Centered around natural resources and amenities Fox Woods Preserve, Bluff Creek Preserve Special Use Areas primarily serving a single-use activity.Community & Regional Draw Site specific Olson Community Garden TABLE 5-1 | City Park Classifications City of Chanhassen 2040 Comprehensive Plan96 FIGURE 5-4 | Park Initiatives Lake Ann Park Lake Susan Park Bandimere Park City Center Park Chanhassen Recreation Cent er South Lotus Lake Par k Kerber Pond P ark Power Hill Pa rk Riley Ridge Park Nort h Lot us La ke P ark Meadow Green Pa rk Herman Field Park Pheas ant Hill Park Sunset R idge Park Stone Creek Park Pione er Pass Park Roundhouse Park Curry Fa rm s Park Chanhass en Hills Park Carv er Bea ch Park Cathc art P ark (O wne d by t he City of Shore wood) Sugarbush Park Prairie K noll Park Ric e Marsh La ke P ark Bandimere Heights Park Greenwood Shores Park Carv er Bea ch Playground Minnewashta Heights Park Chanhass en Es tate s Pa rk Chanhass en High S chool (J oint Fa cilities) Manchest er Park (To B e Com plete d in 2018) Mi n ne w a s h ta R e gi on a l P a r k U ni v e r s it y o f M in nes ota La n d s c a p e A r bo r e t u m R a gu e t W ild l ife Ma na g e m en t Ar e a P r iv a te l y O wn e d Pu bl ic G o lf Co u r s e MN V a l le y N a ti o na l Wi ld li f e R e f ug e Ols on C ommunit y Garden Minnetonka Middle School West CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S treet Lyman Bou levard ChanhassenRoadCrosstow n B oulevard Pleasa nt Vi e wRoad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n e erTrailW estL o n g a c resD riv eVictoriaDrive Arb oretu m B o ule va r d Powe r sBoul evardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 14 0 L ake DriveEast He ronDrive Engler Boulevard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPi on eer Tra i l 82nd Str eet West F ly in g C lo u d D r iv e Chas k a B o u le v ardLakeDrive Pioneer Trail EastChestnutStreetNorthWest82ndStreet ")140 ")53 ¬«101 ¬«7 £¤212 ¬«5 ")61 ¬«101 ¬«101 L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeA n n L a keL ucyR i c e M a r shLake E d e n P r a i r i e E x c e l s i o r G r e e n w o o d M i n n e t o n k aShorewood T o n k a B a y J a c k s o n T w p . S h a k o p e e C h a s k a V i c t o r i a LEG END Op en Spa ce Comm unity Park Neigh borho od Park Preserve Specia l Us e No n-City Pa rks & Open Sp ace Publi c School Surround ing M unic ipa l Park s Wa ter Bod ies Muni cip al Bounda ries °0 0.5 10.25 Mil es »Develop a master plan to: »Define the limits of park expansion to the north and west »Preserve natural areas »Complete a loop trail around Lake Ann »Identify new facility and user amenities Lake ann Park »Expanded parking »Add permanent restroom facility »Lighting and structured seating for the baseball field Lake SuSan Park Add a permanent restroom facility & hockey warming house City Center Park »Implement existing master plan »Construct picnic shelter with restrooms »Add field lights »Build sport court »Add a splash pad »Add a hockey warming house Bandimere Park »Seek opportunities to expand the capacity of the community park network to serve athletic and community event needs. »Use maintenance and replacement schedule to plan for phased replacement of neighborhood park facilities (i.e. playgrounds, sport courts, shelters, etc.) City-wide initiativeS Add parks and/or preserves as development occurs in the Bluff Creek Golf Course, Bluff Creek Corridor, and County Road 61 Corridor Plan areas South ChanhaSSen Priority Expansion Area City of Chanhassen 2040 Comprehensive Plan97 5.9 | Initiatives Initiatives are specific actions or steps that are recommended for implementation. Initiatives are organized by the topic areas of parks, facilities, trails, preserves, programming, and operations. The System Plan is the guiding document relative to city Initiatives for the Parks and Recreation System. Prioritization of the initiatives separated the actions in the time frames of short term, long term, and ongoing. The plan remains flexible so that all initiatives will occur as opportunities arise. The initiatives included in the System Plan are summarized by category below: and shown on the maps on the following page: Parks » Maintain Lake Ann Park as the premier community park » Add amenities to Bandimere, City Center, and Lake Susan Community Parks » Use a maintenance and replacement schedule to keep neighborhood park facilities up to date » Seek opportunities to expand the park network to serve changing community needs and preserve natural amenities. Facilities » Identify and construct a year-round signature recreation facility in the community » Add a destination splash pad at a community park » Establish an interpretative center with outdoor lab space and nature-based play » Add community-scale nature play at a community park and unstructured nature play throughout the community as appropriate » Improve user amenities at existing facilities » Explore opportunities for a second community garden » Implement recommendations of the Athletic Fields Study Trails » Address trail gaps and trail crossing safety issues » Work with partner agencies to reopen Minnesota River Bluff LRT Regional Trail » Complete trail connection to Minnesota River » Increase maps and wayfinding to identify loops, distances, and destinations » Provide more user amenities » Expand the number of natural surface trails » Explore opportunities to add trailheads » Initiate a single-track mountain bike trail study Preserves » Continue to preserve sensitive lands within the Bluff Creek Corridor » Collaborate with other agencies to protect the Seminary Fen » Collaborate with other agencies to protect the Minnesota River Valley » Expand marketing & wayfinding » Expand opportunities to interact with and explore nature » Identify & protect natural areas that link parks, preserves, & destinations » Develop natural resource management plan Programming » Continue to host at least 5 major community events » Expand informal, year-round events & nature-based programs » Collaborate with new & existing partner organizations to provide events & programming » Establish an Event Management Plan » Annually assess pricing structure Operations » Use System Plan as basis for budgeting & Capital Improvement Plan » Incorporate sustainable design & maintenance practices to make Chanhassen a model » Consider a tobacco use policy » Communicate benefits of parks and recreation » Establish formal review process for program/event development It is estimated that the priorities identified will cost $70 to $83 million to implement. City of Chanhassen 2040 Comprehensive Plan98 FIGURE 5-5 | Facility Initiatives Lake Ann Park Lake Susan Park Bandimere Park City Center Park Chanhassen Recreation Cent er South Lotus Lake Par k Kerber Pond P ark Power Hill Pa rk Riley Ridge P ark Nort h Lotus La ke P ark Meadow Green Pa rk Herman Field Park Pheas ant Hill Park Sunset R idge Park Stone Creek Park Pione er Pass Park Roundhouse Park Curry Fa rm s Park Chanhass en Hills Park Carv er Bea ch Park Cathc art Park (O wned by the City of Shore wood) Sugarbush Park Prairie K noll Park Ric e Marsh La ke P ark Bandimere Height s Park Greenwood Shores Park Carv er Bea ch Playground Minnewas ht a Height s Park Chanhass en Es tate s Park Chanhass en High S chool (J oint Fa cilities) Manchest er Park (To B e Com plete d in 2018) Mi n ne w a s h t a R egi on al P a r k U ni v e r s it y o f M in ne s ota La n d s c ap e A r bo r e t u m R agu e t W ild l ife Ma nag e m en t Ar e a P r iv a te l y O wn e d Pu bl ic G o lf C o u r s e MN V a l ley N a t i o na l W i ld li f e R e fug e Ols on Communit y Garden Minnet onka Middle School West CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S t reet Lyman Boulevard ChanhassenRoadCros stow n B oulevard Pleasa nt Vi e wRo ad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n eerTrailW estL o n g a c resDriv eVictoriaDrive Arb oretu m Bo ule va r d Powe r sBoul evardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 140 L ake DriveEast He ronDrive Engler Bo ulevard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPion eer Trail 82nd Street West F l y in g C lo u d D r iv e Chas k a B o u le v ardLakeDrive Pioneer Trail EastChestnutStreetNorthWest82ndStreet ")140 ")53 ¬«101 ¬«7 £¤212 ¬«5 ")61 ¬«101 ¬«101 L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeA n n L a keL ucyR i c e M a r shLake E d e n P r a i r i e E x c e l s i o r G r e e n w o o d M i n n e t o n k aShorewood T o n k a B a y J a c k s o n T w p . S h a k o p e e C h a s k a V i c t o r i a LEG END Op en Space Comm unity Park Neigh borho od Pa rk Preserve Specia l Us e No n-City Parks & Open Sp ac e Public School Surrounding M unic ipal Park s Water Bod ies Municip al Bou nda ries °0 0.5 10.25 Mil es »Complete a study to plan for expansion of facility and services »Improve accessibility (i.e. handicapped parking, trip hazards, door access) reCreation Center »Complete a study to plan for expansion of facility and services »Improve accessibility (i.e. handicapped parking, trip hazards, door access) Senior Center Develop and implement a phased plan for improvements to the skate park Skate Park Add permanent concrete tee boxes and improved site amenities to support disc golf users Bandimere Park »Identify and construct a year-round signature recreation facility in the community that includes indoor, outdoor, and passive spaces. Complete an aquatic facilities need study, recreation center study, and senior center study. »Add a destination splash pad with parking and user amenities at a community park. »Support pickleball by adding user amenities like seating, wind screens, and sun canopies. »Improve existing volleyball facilities within community parks through improved seating, nets, and shelters. »Add community-scale nature play at a community park. »Add unstructured nature play throughout the community as appropriate. »Establish an interpretative center with an outdoor lab space and a nature based play area to support natural resources outreach and education. »Explore opportunities for a second community garden. »Complete an audit of system ADA accessibility and address issues identified. Prioritize Recreation and Senior Centers. »Pilot facilities for new or trending sports to assess appropriateness for park system, cost, durability, and demand. »Install additional ballfield safety fencing as needed. »Implement the recommendations of the Athletic Fields Study. City-wide initiativeS City of Chanhassen 2040 Comprehensive Plan99 FIGURE 5-6 | Trail Initiatives CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S t reet Lyman Boulevard ChanhassenRoadCros stow n B oulevard Pleasa nt Vi e wRo ad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n e erTrailW estL o n g a c resDriv eVictoriaDrive Arb or etu m B o ule va r d Power sBoul evardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 140 L ake DriveEast He ronDrive Engler Boulevard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPionee r Trail 82nd Street West F ly in g C lo u d D r iv e Chas k a B o u le v ardLakeDrive Pioneer Trail EastChestnutStreetNorthWest82ndStreet ")140 ")53 ¬«101 ¬«7 £¤212 ¬«5 ")61 ¬«101 ¬«101 L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeA n n L a keL ucyR i c e M a r s h L a k e E d e n P r a i r i e E x c e l s i o r G r e e n w o o d M i n n e t o n k aShorewood T o n k a B a y J a c k s o n T w p . S h a k o p e e C h a s k a V i c t o r i a LEG END ""Existing Ov erpa ss ##Existing Trail Head !!Existing Underpass GIdentified Sa fety C ross ing Conc ern Trail Gap Existing Si dewal k Existing Trail Op en Space Commu nity Park Neigh borhoo d Park Preserve Special Us e No n-City Parks & Ope n Spa ce Public School Existing Re gion al Trails Surrounding Munici pal Trails Surrounding Munici pal Parks Water Bodi es Municipal Boun daries °0 0.5 10.25 Mile s »Address trail gaps and trail crossing safety issues. »Increase awareness and expanded trail use through maps and trail wayfinding to help identify loops, distances, and destinations. »Support trail accessibility through the identification of easily accessible routes that do not have steep slopes, gaps, or challenging transitions. »Enhance user experiences through kiosks/signage at existing trailheads, benches, lighting, garbage cans, etc. »Expand the number of natural surface trails by mapping existing locations, identifying opportunities, and incorporating trail expansion in the Capital Improvement Plan. »Explore opportunities to add trailheads. »Initiate a single-track mountain bike trail study. City-wide initiativeS Complete the connection to the Minnesota River through the construction of a trail along Bluff Creek Drive or Great Plains Boulevard minneSota river Work with partner agencies to reopen the Minnesota River Bluff LRT Regional Trail Lrt regionaL traiL City of Chanhassen 2040 Comprehensive Plan100 Pl e a s a nt V iew Preser v e Chan hassen Natu r e Pre s e r ve Ri ce M a rsh Lake P re s e r ve Blu ff Cre e k Preser v e Fox W oods Pre s e r ve Hesse Fa r m Par k Pre s er ve La k e S u san Pre s e r ve Pi ne Hurst Preser v e Bl uff Cr e e k Preser v e No rt h La k e R i ley Pre s e r ve MN River Bl uff s Pre s er ve Hi dden C reek Mead o ws Pre s e r ve Lake S u san Preser v e No rt h Pi n e Hu rs t at Lake H arriso n Preser ve Bl uff Cr eek Head water s Pre s e r ve CenturyBoulevardHazeltineBoulevardBluffCreek Drive West 78th S treet Lyman Boulevard ChanhassenRoadCrosstow n B oulevard Pleasa nt Vi e wRoad GreatPlai n s Boulev a r dBa varia R o a dSmithtownRoad P i o n eerTrailW estL o n g a c resD riv eVictoriaDrive Arb oretu m Bo ule va r d Powe r s Boul evardKerberBoulevardLake Lucy Road MinnewashtaParkwayCounty Road 14 0 L ake DriveEast He ronDrive Engler Bo ulevard H un d ertm arkRoadEastGalpinBoulevardAudubonRoadPi on eer Trail 82nd Str eet West F ly in g C lo u d D r iv e Chas k a B o u le v ardLakeDrive Pioneer Trail EastChestnutStreetNorthWest82ndStreet ")140 ")53 ¬«101 ¬«7 £¤212 ¬«5 ")61 ¬«101 ¬«101 L o t usL a k eL a k e S u s a n LakeRileyR iceL akeLakeMinnewashta LakeAn n L a keL ucyR i c e M a r shLake E d e n P r a i r i e E x c e l s i o r G r e e n w o o d M i n n e t o n k aShorewood T o n k a B a y J a c k s o n T w p . S h a k o p e e C h a s k a V i c t o r i a LEGEN D Open Spa ce Pre serve Existing S idewa lk Existing Trail Non-City Parks & Open Spac e Publi c Sch ool Existing Regio nal Trails Surround ing M unicipal Trails Water Bod ies Muni cip al Bou ndaries °0 0.5 10.25 Miles Collaborate with other government agencies in the protection of Seminary Fen Seminary Fen Collaborate with other government agencies in the protection of the Minnesota River Valley mn river vaLLey »Expand awareness of preserves through marketing and wayfinding. »Encourage expansion of opportunities for increased interaction and exploration of nature (i.e. natural surface trails, interpretation, programming, signage, wayfinding, maps, etc.) »Identify and prioritize the protection of natural areas that provide corridors/linkages between parks, preserves, and other destinations. »Prioritize the development of natural resource management plans. City-wide initiativeS Continue to preserve sensitive lands within the Bluff Creek Corridor BLuFF Creek Corridor FIGURE 5-7 | Facility Initiatives City of Chanhassen 2040 Comprehensive Plan101 City of Chanhassen 2040 Comprehensive Plan102 Chapter 6Transportation City of Chanhassen 2040 Comprehensive Plan103 Chapter 6Transportation 6 | Transportation 6.1 | Introduction The City of Chanhassen is located in northeastern Carver County approximately 20 miles from downtown Minneapolis. It is classified as an emerging suburban edge of the Twin Cities Metropolitan Region, and is anticipated to be fully developed by the year 2040. FIGURE 6.1 | Location Map Several regional highways provide Chanhassen with accessibility to the metropolitan area and to out state Minnesota. These include Minnesota Trunk Highway (TH) 5 which runs east/west and interchanges with I-494 east of Chanhassen in the City of Eden Prairie; TH 7 which runs east-west along the northern border of Chanhassen, TH 41 which runs north-south through the western portion of the city, TH 101 which runs north-south bisecting the southern portion of the city and defining the northeastern border of Chanhassen with Eden Prairie and U.S. Highway 212 which traverses the southern third of the city. The Chanhassen Transportation Plan is based on the city’s 2040 Comprehensive Plan update and incorporates the Land Use Plan to evaluate and direct the local transportation system. Updates to these plans have been under- taken by the city to recognize changes in land use, development patterns and other planning processes including: the Minnesota Department of Transportation’s “The 20-Year Minnesota State Highway Investment Plan” City of Chanhassen 2040 Comprehensive Plan104 (MnSHIP), which directs capital investment for Minnesota’s state highway system. The plan must identify invest- ment priorities given current and expected funding. It is updated every four years, as required by the Minnesota Statute. This MnSHIP update spans the 20-year planning period from 2018 to 2037. The Statewide Multimodal Transportation Plan describes statewide objectives and strategies that help MnDOT and its partners make progress toward the Minnesota GO 50-Year Vision, Carver County’s Transportation Plan 2014 update and the Metropolitan Council’s 2040 Transportation Policy Plan (TPP) and Thrive 2040 MSP. The TPP was adopted on January 14, 2015 and outlines major transportation investments for the transportation system in the seven county metropolitan area. The TPP identified $84 Billion (2015-2040) in the Current Revenue Scenario for transportation needs in the region. As a result of this funding level, many needs throughout the metropolitan area will go unmet over the next 20 years. The TPP identified current Level of Service (LOS) problems on regional routes such as TH 5, TH 7, TH 41, TH 101 and U.S. Highway 212. Given these limited capacity improvements to regional facilities, operational (congestion), and safety problems on these facilities will continue to increase. Since the regional facilities are anticipated to func- tion poorly, additional traffic is anticipated to divert to the local system. Carver County is in the process of updating their Comprehensive Plan including the transportation element. System changes and traffic forecasts included in this plan are based on county facilities and forecasts. Study Goals and Objectives The Transportation Plan shows how the City of Chanhassen will achieve its goal of creating an integrated, multi-modal transportation system, which permits safe, efficient and effective movement of people and goods while supporting the city’s development plans and complementing the metropolitan transportation system that lays within its boundaries. To accomplish this goal, the Transportation Plan: 1. Identifies the density and distribution of future land uses and their relationship to the proposed local transportation system and the anticipated metropolitan transportation system. 2. Develops a functional hierarchy of streets and roads and defines their access to the regional system to ensure that they support the existing and anticipated development of the area; serve both short trips and trips to adjacent communities; and complement and support the metropolitan highway system. 3. Establishes a system improvement and completion program that ensures that higher priority projects are constructed first; maintains a consistent and coherent roadway system during the roadway system development process; and provides for adequate funding for all needed improvements. 4. Identifies what transit services and travel demand management strategies are appropriate for implementation in Chanhassen in order to increase the number and proportion of people who use transit or share rides, and reduce the peak level of demand on the entire transportation system. 5. Identifies the strategies and policies that need to be implemented to properly integrate the trail system (pedestrian, bicycle, etc.) with the proposed roadway system, to ensure the provision of trails in a sequence consistent with the development of the roadway system, and to create a rational network of sidewalks. Because this analysis deals not only with streets and highways, but also with land use, trails, transit, traffic management and other topics, the results will constitute a Transportation Plan. 6.2 | Land Use Existing Land Use Existing development within the city is influenced by several factors including the relative location of the Minneap- olis Central Business District, the location of metropolitan highways and the location of several lakes within the city. Residential development, which previously has occurred primarily in the northern portion of the city, with some large lot developments in other areas, has begun to spread out throughout the city. Commercial areas in City of Chanhassen 2040 Comprehensive Plan105 Chanhassen have developed along the major highway corridors of TH 5 and TH 41. Additionally, a lifestyle center is under development at the intersection of U.S. Highway 212 and CSAH 17 (Powers Boulevard). The city is also planning for a mixed use development in the CSAH 61 corridor in southern Chanhassen with the extension of urban services. For more information on land use with in the city see the land use section of the comprehensive plan. Metropolitan Urban Services Area The Metropolitan Urban Services Area (MUSA) is defined as areas within the city that may be served with cen- tralized infrastructure service and which may therefore develop at urban densities and intensities. The purpose of this boundary is to define the areas within the Twin Cities Metropolitan Area that are eligible for “urban services”, specifically sewers, municipal water systems and particular types of transportation systems. This boundary line is defined and maintained by the Metropolitan Council to assist in the orderly development of the metropolitan area. The city has identified the key infrastructure, lift stations, wells and streets needed to expand into the 2020 MUSA area. It is the city’s desire to direct development to those properties that have municipal services. Assuming that cur- rent development patterns continue, the majority of the city will be developed by 2040. The pace of expansion of the MUSA will depend on the availability of sufficient developable land to support the required infrastructure. The location of the MUSA line is, therefore, a valuable guide in determining the priority of roadway improvements. The roadway system within the MUSA area is going to be in demand much sooner than the roadway system outside. This is one of the reasons for having such a boundary. It allows municipalities to focus limited resources on partic- ular parts of their territory. All of Chanhassen is expected to be within the MUSA by the year 2020. However, the actual extension of urban services will be dependent on the orderly construction of key infrastructure. Land Use Plan The 2040 Comprehensive Land Use Plan defines areas where the city will encourage specific types of land uses to be developed. The general categories of land uses defined by the city are residential, commercial, mixed use, industrial, office, public and parks. The Land Use Plan is a tool that the city uses to “guide” future development so that it is consistent with current and future land uses in the city. From these land uses, the socioeconomic projections are estimated. Socioeconomic Characteristics The analysis and projection of regional traffic conditions is conducted utilizing a technique known as traffic analysis zones. Traffic analysis zones (TAZ) are defined geographical areas within which data such as population, employ- ment and household information is collected. This data is analyzed through computer modeling techniques which results in forecasts of traffic movement between zones. Utilizing this technique, it is possible to project travel and demand such as person trip productions, person trip attractions, intrazonal person trips and motor vehicle data such as average daily trips and peak hour trips. This data is valuable in both local and regional transportation planning. Table 6.1 shows the past census population, households, and employment as well as 2020 - 2040 forecasts for the City of Chanhassen. From 2010 to 2040, the population and the number of households in Chanhassen are project- ed to increase 62 and 68 percent respectively. By 2040, Chanhassen’s employment is projected to grow 69 percent more than the 2010 figure. City forecasts are based on the location of existing development and an understanding of the kind of development that occurs as well as the rate at which development is occurring both within Chanhassen and throughout the region. City of Chanhassen 2040 Comprehensive Plan106 TABLE 6.1 | Population, Households, and Employment Past Census Totals and 2020, 2030, and 2040 Forecasts TABLE 6.2 | City of Chanhassen 2040 Population, Households, and Employment by TAZ Table 6.2 shows the City of Chanhassen’s forecast for population, households, and employ- ment by TAZ for 2020, 2030 and 2040. This table distributes growth across the city during the planning period. 1970 1980 1990 2000 2010 2020 2030 2040 Population 4,879 6,359 11,732 20,231 22,942 26,700 31,700 37,100 Households 1,349 2,075 4,016 6,914 8,352 10,000 11,900 14,000 Employment 900 2,102 6,105 9,350 10,905 15,600 17,000 18,400 Forecast figures from Metropolitan Council TAZ House Pop Employ House Pop Employ House Pop Employ 375 540 1,539 270 555 1,543 297 573 1,593 327 376 423 1,176 332 470 1,283 350 493 1,331 370 377 192 518 1,170 218 512 1,287 398 931 1,416 382 13 34 485 13 34 598 13 34 951 383 35 90 0 218 569 0 398 1,043 0 384 145 416 26 300 918 51 721 1,702 70 385 513 1,347 8 801 1,972 54 891 2,155 54 386 155 426 69 540 1,385 251 695 1,799 384 387 753 1,987 167 1,046 2,697 1,972 1,100 2,707 2,575 388 652 1,569 3,300 688 2,143 2,550 906 2,087 2,490 389 392 1,074 1,758 392 1,047 2,277 392 1,019 2,600 390 1,080 3,863 352 1,100 3,871 218 1,377 4,071 398 391 1,118 3,102 124 1,456 3,872 134 1,948 6,474 172 392 634 1,399 1,644 663 1,476 1,680 600 1,488 1,554 393 823 1,786 564 830 1,895 572 830 1,895 577 394 1,893 4,521 2,650 1,960 4,604 2,342 2,000 4,856 2,360 395 639 1,853 0 650 1,879 0 665 1,915 0 962 0 0 0 0 0 0 0 0 0 1657 0 0 1,489 0 0 1,294 0 0 1,054 1678 0 0 1,192 0 0 1,073 0 0 1,048 TOTALS 10,000 26,700 15,600 11,900 31,700 17,000 14,000 37,100 18,400 2020 2030 2040 Projections and allocations were made by City of Chanhassen Planning Department, April 2018. City of Chanhassen 2040 Comprehensive Plan107 FIGURE 6.2 | TAZ Map City of Chanhassen 2040 Comprehensive Plan108 6.3 | Analysis of Existing and Future Roadway Needs Determining future roadway needs is based on both an analysis of the existing roadway network needs and an understanding of how traffic demand will grow in the future. A good indicator of existing need is traffic congestion. However, maintaining system continuity as new land develops is also important. Identifying future need requires an understanding of how the city is expected to grow. The preceding section outlined the expected distribution of housing, population and employment. Traffic forecasts were made for the existing roadway system including im- provements that are already programmed. This traffic analysis allows the detection of problems that would develop if no further system improvements were made. Existing Roadway System As with all municipalities, jurisdiction over the roadway system is shared among three levels of government: the state, the county and the city. The Minnesota Department of Transportation (MnDOT) maintains the interstate and trunk highway system on behalf of the state. Carver County maintains the County State Aid Highway (CSAH) and County Road systems. The remaining streets and roadways are the responsibility of the city. The existing street network includes approximately 153 miles of road. This represents double the road system of 75 miles in 1990. Road Type Length in Miles Trunk Highway 21.59 Trunk Highway turn-back 0 County State Aid 19.2 Municipal State Aid 22.14 County 2.04 Local 88.24 TOTAL 153.21 City of Chanhassen 2040 Comprehensive Plan109 TABLE 6.3 | City of Chanhassen Important Transportation Facilities HIGHWAY/STREET FROM TO Audubon Road TH 5 Lyman Boulevard Audubon Road (CSAH 15)Lyman Boulevard South Limit Bluff Creek Boulevard Audubon Road (CSAH 15)Powers Boulevard (CSAH 17) Bluff Creek Drive Bluff Creek Boulevard Flying Cloud Drive (CSAH 61) Coulter Boulevard Century Boulevard Audubon Road Dell Road TH 5 South Limit Flying Cloud Drive (CSAH 61)West Limit East Limit Galpin Boulevard(CR 117 & 15)North Limit Lyman Boulevard (CSAH 18) Kerber Boulevard CSAH 17 W.78th Street Lake Drive East Powers Boulevard (CSAH 17)Dell Road Lake Lucy Road TH 41 Powers Boulevard (CSAH 17) Longacres Drive TH 41 Galpin Boulevard CR117 Lyman Boulevard (CSAH 18) West Limit CSAH 101 Market Boulevard W.78th Street Lake Drive East Minnewashta Parkway TH 7 TH 5 Park Road Audubon Road Powers Boulevard (CSAH 17) Pioneer Trail (CSAH 14)West limit East Limit Pleasant View Road Powers Boulevard(CSAH 17)TH 101 Powers Boulevard (CSAH 17) North Limit Pioneer Trail (CSAH 14) TH 5 West Limit East Limit TH 7 West Limit East Limit TH 41 (Hazeltine Boulevard)South Limit North Limit TH 101 and CR 101 South Limit North Limit U.S. Highway 212 West Limit East Limit West 78th Street TH 41 TH 101 Table 6.3 shows the major components of the existing street system in the City of Chanhassen along with each facility’s termini. Existing Traffic Volumes Traffic volumes for the different highway segments within Chanhassen were collected from MnDOT traffic maps, Carver County Transportation Plan and City of Chanhassen traffic counts in the summer of 2017. These volumes represent average daily traffic volumes and are shown on the Traffic Volumes Map. There are no intermodal freight terminals within the city. There are two areas of office-industrial development. The eastern development in Hennepin County are on either side of Highway 5 from Dell Road west to approximately Highway 101. The other office industrial area is south of Highway 5 from Market Boulevard (CR 101) to Audubon Road and as far south as the TC&W Railroad. City of Chanhassen 2040 Comprehensive Plan110 FIGURE 6.3 | Existing Freight Physical Conditions and Traffic Counts Lyman B l v d (CSAH18) Lyman Blvd (CSAH 18)Pion e e r Trail (C S AH 14)(C S A H 6 1 )F ly in g C lo u d D riv ePowersBlvd(C.R.17)AudubonRoad(CSAH15)State Hig h w a y 10 1Hwy101GreatPlainsBlvd Hwy 101Gr e at Pl ainsBlvdState Hwy 5 S ta te H w y 5 Arboretum Boulevard Highway 41GalpinBlvd.(C.R.117)State Hwy 5 S ta te H w y 7 Hazeltine Blvd (Hwy 41)Chanhassen Rd. Hwy. 101AudubonRoad(C S A H 6 1 )F ly in g C l o u d D rMinnewashtaPkwyGalpinBlvd(C.R.15)£¤212 £¤212 £¤212 PowersBlvd(C.R.17)Bluff Creek DrBluffCreekBlvd 800570 235930 39321598 890 1906602306 8 0 397405370481 35027502 8 5 0 8 1 0 359 980 6 9 0 172784 1 1 5 0 2 6 7 429205110114535 275310 940390 1 2 5 0 City of Chanhassen Existing Freight Physcial Conditions and Traf�ic Counts L Existing Road Network 2 Lane County Road 2 Lane Trunk Highway 4 Lane County Road 4 Lane Trunk Highway Other Roads Railroad Parks Lakes City Boundary Date: 4/26/2018 950 - Traffic Volumes - 2016 HCAADT 24501 8 9 City of Chanhassen 2040 Comprehensive Plan111 FIGURE 6.4 | Traffic Volumes Map City of Chanhassen 2040 Comprehensive Plan112 Existing Transportation Issues/Deficiencies The function of a transportation plan is to not only accommodate future needs but also to analyze existing problems and pose appropriate solutions. Frequently, existing problems are closely related to future needs. As a result, a specific action in a given area can remedy existing deficiencies while providing for future needs. Issues and system deficiencies were categorized into three areas: 1) intersections, 2) roadway capacity/alignment/ connection and 3) jurisdictional continuity. The major issues are shown on the system deficiency map and discussed in more detail as follows: ! ! !! ! ! ! ! ! ! ! ! ! ! !! ! ! Lake Ann Park Rice Marsh Lake Preserve North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve ChanhassenRecreation Center Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park P rairieK n o llP ark PowerHillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park Carver Beach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum SugarbushPark Chanhassen Nature Preserve Minnesota Landscape Arboretum Pleasant ViewPreserveFoxwoods Preserve Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Bluff Creek Preserve Rice Marsh Lake Park Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake Sand y H o o k Road W82ndStWestL a ke Crt LakeS u s a n D riveL a k o ta LaneSunset TrailSandyHook C irCheyen neBighornDrive HazeltineBlvd(Hwy41)Lyman Blvd (CS AH1 8 )MinnewashtaParkwayCircle JuniperAve.DogwoodRdSommer Gate RingneckDr.Pheasant Dr Hillsd al e Crt S o u t he r n C r t ForestRidgeCircleHawthorne ChaskaRoadMolineCirS te lle r Cir WhiteDoveD rStratton CrtCharing Bend H e a therCourtPowersBlvd(CSAH17)S a ddlebrookPass Trott ersCirTargetLaneKerberBlvdChippewaCir ChippewaTrailSan t a Ve r a DrSaratogaDr SaratogaCirSanta Fe Trail S ie r r a T ra ilSierraCourt S h a d o w mere CanterburyCir R e d w i n g C t. NezPerceCt O x b owBendSum mit Circle StagHornLn Oxbow B e ndD a ko taDa k otaCirc l eBuc k in g w o o d C o urtT im berwood Dr Pin e w o o d C ircle A c orn L an eM a p lew o o dT erra c eOakwood Ridge Ren aissance CourtBenwoodCircle St oneCreekRdStoneCree k D rStoneCreekDr BluffViewCourt CreekViewCourt Lake D riveW estC o m m e rce D rValle y RidgeTrailNorth Valley Ridg eTrail South Valley ViewCourt ValleyRidgeCourtValleyRidge Place ValleyView P lSpoo n b il lC ir M alla rd Cr tEgretCrtLakeSusanHills Dr FlamingoDrT e rn C r tK ingfis he r Crt T hrush Crt M erga nserCrt Oaksid e CircleLymanCourt M ary J aneCi rBarbara CrtDrakeCrtDove CrtParkDrPark R o a d L a k eD riveDakotaCirErie AveW 86thSt Quinn RoadBluffCircleFawnHill Court RidgeRoadB e lm o n t L n W 78th St W.Village Road LakeLucy Lane CrestviewCir W h itet a il Ri d ge C our t MoccasinTrail W 79th St.Crimson Bay RdG reatPlainsBlvdIndian Hill Rd Yuma Dr KiowaLongacre s D r McGlynn DrMelodyLane P.V.LN.P.V.CirLake LucyRoad CenturyBoulevardLon g a c re s D rFawnHillR d FAWNHILLROAD82nd Street MainStreetHighoverDriveHighoverCrtS HighoverCrtN 21 3 4 5 6 Grandview RdStone CreekCrt H e ron Dr AlisaCourtAlisaLaneBentBowTrail GunflintCourt 3 Co u lt e r B o u le v a rd Coulter Blvd Andrew Court Coulter Blvd 1 KIMBERLY LANE 3 Nicholas Way 2 Kelly CourtLakewayDrive Lake D riveWestL a k e D r iveLakeD rE .D e e rb ro o k D rH o rs e sho e L a n e HorseshoeCurveBridleCreek Circle NorthwoodCourt4 Autumn Ridge Ct5 Autumn Ridge Ln6 Autumn Ridge Way S toughtonAveH ennepinCountyR e g io n a lT ra ilC o r r id o r W est Farm R o a d H e idi L a neHesse Farm Cir VogelsbergTrailMandan RaspberryHillBl uff C reek Drive M ills Road FlintlockT railW. 96th Street Hwy101GreatPlainsBlvdFoxfordRoad W 94thSt.KiowaTrailLake Riley BlvdDeerfootTrail ParklandWay Spr ingfiel d D rEastwoodCrt OverlookCourt S un n y v ale D rGreen vi ew Dr. ShoreviewCourt GreenleafCourtSummerfieldDrSummerfieldDrive Lym a n Blvd La k eviewRdE N orthB ayDr1 Mission Way Hill W2 Marshland Tr3 Blackbird Ct4 Hartland Ct5 Mission Hill Way E6 Rice Ct7 Monk Ct8 Mayfield Ct9 Mission Hills Dr10 Frisco Ct Tig u a L aChanhass en Hills Dr NorthC hanh a ssenH illsD rSouthL a k eS u s anC rtL ake Susan Hills D r2 43 1 W 187th StW 77th St 5 P elicanC rtOspreyLnBluebillTrailBitternCourtSwanCourtI bi sCrtWestLakeDr MarketBlv d DellRoadL ake Drive E. Cheyenne Spur CheyenneAveLake Dr E .H id d e nCir ErieCir cleErie S purDakota Lane Dakota LaneHiddenCourtMarsh Dr DakotaAveH id denL a n e Sinnen CirGreatPlainsBlvdW79thSt 77th StQuattroD r Park Road Park Court Par k Plac e 3 Autumn Ridge Avenue2 Harvest Way 1 Harvest Lane LukewoodDr S t one Creek Lane W S tone C r eekLaneEB o u ld erR oadBridle CreekTr a il W 82nd St. Arboretum Boulevard Highway 41State Hwy 5 A rb o re tum D rive77thSt L on eCedarLane Minnewashta Court S ou th C ed a r D rive RedOak Lane W hite Oak Lane White Oak Lane Hallgren Lane CountryOaksRoadStratford RidgeGlendale Dr 6 6 Jersey Way StratfordLn StratfordBlvdStateH w y 7 Crestview D r Linden C ir K irkw o o dC ir Land in g s D riveLandingsCrtJoshuaCi rCountryO aks RdLes leeCurveGreenbriar AveN e z P erc e D r AudubonRd(CSAH15)Glendale Dr. Maple Cir Maple DrLeslee Curve Chur chRoadMeado w Lane W. 62nd St.MeadowCourtElmTreeCypressDriveD ar t mo u t h D rFir TreeShoreDrive Highover LaneBar b erryCirAr borLane DogwoodAveIronwo od Pip e r Ri d g e Ln TanagersPointNorth Man o rWash t a Bay R o ad TanagersLn S a n d piperTrailM in n ewashtaWo o d s DrForrestCirFores t Av eOrioleAve64th St.M elodyHill MurrayHillRoadW. 65th St.Hummingbird RdMelod yHillCirHighover Way Ches Mar Farm Rd Ches Mar DrHun te r Dr LodgepolePointHarrisonHillTrailHarrisonHillCourt Re d F ox Circle Brinker St CrocusCt.TulipCt.Majes ticWay WindmillDr5 BANEBERRY WAY E6 CONE FLOWER CRV S7 BLUEBONNET BLVD 10 BLUE SAGE LN E9 POPPY DR8 CHICORY WAY 13 BUTTER CUP CRT14 BLUESAGE LN WMillCreekLNKings Road Settlers CtTrailsEndRd Trails E n dRdLake Lucy Rd W.78thSt HighwoodDr TreeTopRdMarket St Crestview Dr.Ch estnut L a n e Pinehur s tD rPinehurst Dr 16 SNAPDRAGON DR 4 PRIMROSE PLACE 2 CLOVER1 BANEBERRY WAY W 3 CONEFLOWER CRV N 12 LADY SLIPPER LANE11 WATERLEAF LANE E 15 WATERLEAF LANE WWalnutCurve 6 7 8 9 101115 14 2 3 13 1 16 5 5 4 12Prairie Flow e r BlvdWhiteDoveCir Woo d Duck CirPintailCir Partridge Cir TealCir West 63rd StCardinal Ave.CreekRun Tr.AudubonBlue JayKoehnen Cir. EastKoehnenCir. West P heasantCir Shadow LaneIthlienAshton CT Te tonLaneBretton WayPipewood Cir £¤212 Arlington Ct. 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A summary of the intersections that experience the most problems are as follows: 1. TH 7/Minnewashta Parkway The major problem with this intersection is the angle with which northbound Minnewashta Parkway joins TH 7. As a result, it is difficult to see eastbound traffic on TH 7. Also, turning movements from eastbound TH 7 to southbound Minnewashta Parkway are cumbersome. Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. Installation of a traffic signal or other intersection improvement, e.g. round-about, at this location may be warranted in the future. 2. TH 5/Minnewashta Parkway The City of Chanhassen completed improvements to Minnewashta Parkway in 1993. A pedestrian underpass was constructed to the Minnesota Landscape Arboretum in 2012. Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. Installation of a traffic signal and turn lanes at this location are anticipated in the future. 3. TH 5/Crimson Bay Road/Minnesota Landscape Arboretum entrance Due to heavy traffic volumes, particularly during peak hours, left turning movements in this area are difficult. Elimination of left turns may improve this intersection. 4. TH 41/Lake Lucy Road Due to heavy traffic volumes, particularly during peak hours on TH 41, turning movements in this area are difficult. Installation of a traffic signal at this location may be warranted in the future. 5. TH 41 and Minnetonka Middle School Beehive Homes of Excelsior entrances. Due to heavy traffic volumes, particularly during school pick-up and drop-off hours, turning movements in this area are difficult. Installation of a traffic signal or a round-about at this location may be warranted in the future. 6. TH 41/W. 78th Street Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. Installation of a traffic signal at this location may be warranted in the future. 7. TH 5/TH41 Intersection geometrics were evaluated. Additional turn lanes and through lanes are necessary on TH 41. The south approach to the intersection contains a significant slope that must be lowered. 8. TH 41/Water Tower Place A future right-in/right-out has been planned for this intersection. Installation of this intersection is not possible until the roadway geometrics are improved south of TH 5. Improvements to TH 41 are not in the 20 year MnDOT improvement plan. 9. Galpin Boulevard/Lyman Boulevard With the development of the property south of Lyman, a fourth traffic leg will be added to the intersection. 10. TH 5/Powers Boulevard (CSAH 17) Traffic congestion occurs at this intersection during peak hours. Additional turn lane improvements are required on westbound left turn movements. This intersection experiences an extraordinary number of traffic accidents. 11. TH 5/Market Boulevard Traffic congestion occurs at this intersection during peak hours. Traffic backs up through the intersection of W. 78th St. There are a significant number of crashes at this intersection. 12. Market Boulevard/Market Street Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. This intersection will need to be monitored to determine if improvements are warranted. City of Chanhassen 2040 Comprehensive Plan114 13. TH 5/ Great Plains Boulevard Traffic congestion occurs at this intersection during peak hours. Traffic backs up through the intersection of W. 78th St. Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. 14. Great Plains Boulevard/W. 79th Street This intersection includes failing level of service levels for left turning movements. This intersection will need to be monitored to determine if improvements are warranted. 15. TH 101/Pleasant View Road Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. Installation of a traffic signal at this location may be warranted in the future. Turn lanes were added to this intersection and a pedestrian warning light (rectangular rapid flashing beacons) was installed in 2015. 16. TH 101/Kurvers Point Road/Valley View Road Due to heavy traffic volumes, particularly during peak hours, turning movements in this area are difficult. A southbound by-pass/left turn lane is provided at this intersection. This intersection will need to be monitored to determine if improvements are warranted. Pedestrian and bike crossing at this intersection are challenging and should be evaluated as part of any improvements. 17. TH 5/TH 101/Dakota Ave. Due to heavy traffic volumes, this intersection experiences an extraordinary number of traffic accidents. 18. TH 101/Flying Cloud Drive The city, in conjunction with Carver County and MnDOT, will undertake a study to determine the appropriate access controls necessary to serve the properties and maintain the capacity of Flying Cloud Drive. In 2016, a roundabout was constructed at the intersection of Flying Cloud Drive and the CSAH 101 river crossing. It the future, the north leg of the intersection realigning TH 101 will connect to the roundabout. Road Capacity/Alignment/Connections Deficiencies in this category are mainly caused due to capacity problems created by increased traffic volumes, alignment or geometric deficiencies or poor regional or local connections. Examples of such circumstances include the following: TH 5 Users of TH 5 are aware that excessive congestion on this route occurs at various times of the day with concentrations during peak hours. Portions of TH 5 are overloaded for up to 8 hours per day. In 2015, TH 5 carried 39,000 vehicles per day at Chanhassen’s eastern border, down from the 55,000 vehicle trips per day in 2005. Relief from the congestion of TH 5 was due to the construction of U.S. Highway 212 through Chanhassen. TH 5 east of Powers Boulevard and west of TH 41 continues to be a traffic-congestion problem and with continued growth in western Carver County, congestion along this corridor is expected to increase. With U.S. Highway 212 opening in 2009, some of this congestion has decreased with 26,000 vehicle trips per day in 2015. The City of Chanhassen should continue to partner with Carver County, the City of Eden Prairie, the City of Victoria, MNDOT and other communities along the corridor to plan for future improvements and identify funding. TH 7 TH 7 experiences congestion during peak hours of traffic. Daily traffic volumes exceed the design capacity for a two-lane highway. TH 41 Existing sight distances at various areas along the corridor are potentially inadequate. Additionally with 14,600 vehicle trips per day north of TH 5 and 13,200 vehicle trips per day south of TH 5 in 2015, the capacity of this roadway is being stressed. TH 101 North of TH 5 This corridor should be widened and turn lanes installed at intersections to improve function. Also, geometric improvements should be made. Since a substantial portion of TH 101 is in Carver County, Chanhassen, Eden Prairie and Hennepin County, jurisdictional and functional continuity are significant concerns that could have major consequences for the city. City of Chanhassen 2040 Comprehensive Plan115 TH 101 South of Pioneer Trail to CSAH 61 The highway has significant alignment and geometric problems. TH 101 from TH 5 to Pioneer Trail was improved by MnDOT, Carver County and Chanhassen and will jurisdictionally be transferred to Carver County for future maintenance. The intersection of TH 101 and Pioneer Trail (CSAH 14) has been widened and signalized (2005). The purpose of the project is to improve traffic safety, capacity and connectivity issues on TH 101 between Pioneer Trail and Flying Cloud Drive, which involves realigning and reconstructing 1.2 miles of TH 101 from a two-lane undivided roadway to a four-lane divided roadway with turn lanes at key intersections. A paved multi-use trail is proposed along both sides of TH 101 from Pioneer Trail to Creekwood Drive and along the east side only from Creekwood Drive to Flying Cloud Drive. Carver County currently performs maintenance on this segment of roadway. The City of Chanhassen, in cooperation with MnDOT and Carver County, completed the preliminary design and environmental review (Environmental Assessment Worksheet) for Highway 101 from Pioneer Trail (CSAH 14) to Flying Cloud Drive (CSAH 61). On November 23, 2015, the City of Chanhassen officially mapped the preferred alignment. Preliminary Design: http://www.ci.chanhassen.mn.us/DocumentCenter/View/2730 Official Map: http://www.ci.chanhassen.mn.us/DocumentCenter/View/2729 FIGURE 6.6 | 101 Realignment Map Minimal funding has been provided by the State of Minnesota for this improvement. Additional funding will need to be secured for the future improvements to the corridor. It is expected that state and local funds will be needed to help finance the improvements. Pleasant View Road The existing roadway alignment is inadequate in several areas. Sharp curves, private building structures located at the right of way line, hidden driveways and frequent vistas of Lotus Lake, which serve as a distraction, all combine to create a poor functioning corridor. Due to the need for more right-of-way, previous efforts to improve Pleasant View Road have been unsuccessful. As a result, the inadequacies of this route will continue to intensify in the future as traffic volumes increase. Bluff Creek Boulevard The city constructed a portion of Bluff Creek Boulevard east from Audubon Road (CSAH 15) as part of the 2005 MUSA project. However, the final segment, approximately half a mile, of the roadway to Powers Boulevard was not included in the project. This roadway must be constructed with the development of the properties west of Powers Boulevard. City of Chanhassen 2040 Comprehensive Plan116 Galpin Boulevard (CSAH 117) This roadway provides a connection through Chanhassen to the City of Shorewood and Hennepin County ending at TH 7. In Chanhassen, the roadway is a rural design standard and should be upgraded to an urban design with safety and geometric improvements. In Shorewood, the roadway narrows to a rural section road. Sunset Trail, North Collector Street Connection Local collector roadways were identified in the 2005 MUSA project to properly provide service for the development of this area and con- nect to the County roadway system. This collector road will connect to Lyman Boulevard (CSAH 18). The connection will be constructed with the development of the properties in the area. Eagle Ridge Road, East/West Connection A connection from TH 101 with a touch down in the vicinity of Bandimere Park to Powers Boulevard (CSAH 17) with a touch down between Highway 212 and Homestead Lane. These connections will be constructed with the development of the properties in the area. Additionally, this road will make connections with West 96th Street as well as Homestead Lane and/or Flintlock Trail. Lyman Boulevard (CSAH 18) Chanhassen, Chaska and Carver County are currently working on planning for the future improvements to Lyman Boulevard from Galpin Boulevard to the west. Bluff Creek Golf Course A connection from Pioneer Trail and Powers Boulevard to TH 101 will be required as part of any redevelopment of the golf course. The existing Creekwood Drive is not designed or constructed to accommodate redevelopment traffic. These connections will be constructed with the development of the properties in the area. Flying Cloud Boulevard (CSAH 61) A continuation of the improvement to CSAH 61 west of Bluff Creek Drive to Engler Boulevard is being reviewed by Carver County, Chanhassen and Chaska. These improvements are intended to improve traffic capacity. This project is part of the highway turn-back roadway projects. Other Local Street Improvements: Dogwood Road/Crimson Bay Road At the present time, Crimson Bay Road does not connect to Dogwood Road. Correspondingly, the Crimson Bay neighborhood has only one means of egress/ingress. A future street connection in this area is needed to alleviate existing access problems. Additionally, it is anticipated that once this connection is made, access to TH 5 shall be made into a right-in/right-out only. Fox Hollow Drive The right-of-way is dedicated for the roadway connection. However, the public street does not connect to the two ends of the road. Cur- rently, through traffic must go through a driveway on the North Lotus Lake Park property to continue on Fox Hollow Drive. A public street should be constructed within the right-of-way to complete this roadway as part of any street maintenance or reconstruction project. Nez Perce/Pleasant View Road Connection During review of the Vineland Forest plat, it was evident that a connection between Nez Perce/Lake Lucy Road and Pleasant View Road was warranted since there was no north-south connection between Powers Boulevard (CSAH 17) and Lotus Lake. Improved access is needed for local trips and to ensure the adequate provision of emergency services. At the same time, there were concerns voiced regarding the introduction of additional trips onto Pleasant View Road since the street already suffers from capacity and design constraints. Therefore, it was determined that the Pleasant View Road intersection should be located as far west as possible at the Peaceful Lane intersection. Pipewood Lane and W. 62nd Street A secondary access to this area was discussed as part of the plat for Hidden Creek Meadows. Cathcart Lane is a substandard gravel roadway that provides emergency access to the area. With the future development of the farmstead, a public street will connect these roadways. City of Chanhassen 2040 Comprehensive Plan117 Timberwood Drive/Stone Creek Court The neighborhoods of Timberwood Estates and Stone Creek are separated by approximately 30 feet of unfinished road. This connection would permit the residents of Timberwood Estates to access the Bluff Creek trail system. In addition, this connection could provide a secondary access to Timberwood Estates for residents and emergency vehicles. 6.4 | Future Traffic Forecasts The city has relied on the 2040 baseline traffic forecasts incorporated within the Carver County Transportation Plan to determine the adequacy and appropriateness of the street and highway system to accommodate the development that is expected to be in place by the year 2040. The forecasts were prepared based upon projected population, households and employment data developed by the City of Chanhassen and Carver County in conjunction with the Metropolitan Council. 2040 Baseline – Development assumptions are consistent with the Metropolitan Council’s Thrive MSP 2040. The population, household, and employment information was distributed throughout the city to a refined network of Traffic Assignment Zones (TAZ). The analysis assumed improvements to regional facilities only if they were programmed. Other local improvements were assumed if they have been included in previous transpor- tation plans and were part of the arterial system. These system improvements are listed as follows: » TH 41: Four lanes from Highway 5 to the south Carver County boundary. » TH 101: Four lanes from Pioneer Trail (CSAH 14) to Flying Cloud Drive (CSAH 61) » Lyman Blvd: Four lanes from Galpin Boulevard (CSAH 15) to TH 41. The resulting traffic projections are shown in the 2040 Average Daily Traffic (ADT) map. The forecasts are based on a capacity restrained network. The level of congestion of the future highway system depends in large measure on both the capacity improvements undertaken and the availability of a local arterial system to complement and relieve the regional system. The 2040 forecasts suggest the following: Regional Facilities (TH 7, TH 5, TH 41 and U.S. Highway 212) currently are congested. With little or no capacity improvements to these facilities, congestion will increase on these facilities. In addition, more trips will divert to local routes such as CSAH 14 (Pioneer Trail), CSAH 18 (Lyman Boulevard), County Road 117 (Galpin), CSAH 17 (Powers Boulevard) and to other collector routes within the city. Regional River Crossing Bridges (TH 41 and TH 101) are congested currently and will become more congested as the region expands. The development of U.S. Highway 212 is anticipated to attract more trips from Scott County and U.S. Highway 169. A connection from Highways 212 to 169 will provide relief to this congestion. Agencies should continue to investigate and preserve this corridor or identify how existing corridors could be expanded to address river crossing needs. While CSAH 101 was raised above the flood elevation and widened to four lanes in 2016, additional cross river traffic is anticipated. Improvements proposed for municipal roadways are under direct control of the city and will receive highest priority in the city’s Transportation Improvement Program. For roadways on the county system, the city will cooperate with Carver County and encourage the improvement of county roads in accordance with this plan. 6.5 | System Plan The proposed roadway system should be consistent with the anticipated density and distribution of land uses in the city in the year 2040. The purpose of this section is to review the existing functional classification system and identify po- tential functional classification and other system changes that should be made to accommodate the anticipated growth. City of Chanhassen 2040 Comprehensive Plan118 Guiding Planning Principles The City of Chanhassen Transportation Plan has been developed using the following guidelines and planning principles: 1. The functional classification of the roadway system in Chanhassen should conform to the following criteria and characteristics: » The trip length characteristics of the route as indicated by length of route, type and size of traffic generators served, and route continuity. » The ability of the route to serve regional population centers, regional activity centers and major traffic generators. » The spacing of the route to serve different functions (need to provide access and mobility functions for entire area). » The ability of the route to provide continuity through individual travelsheds and between travelsheds. » The role of the route in providing mobility or land access (number of accesses, access spacing, speed, parking and traffic control). » The relationship of the route to adjacent land uses (location of growth areas, industrial areas and neighborhoods). » The spacing guidelines for the specific road classification. The functional classification system is broken down into four categories – principal arterials, minor arterials (‘A’ and ‘B’), collectors (major and minor) and local roadways. 2. The plan should reflect vehicular travel demand at full development. 3. The full development level, as defined by the proposed Land Use Guide Plan, should incorporate the limiting effects that the identified physical constraints have on the attainment of the anticipated level of development. 4. Compatibility and connectivity should be maintained between the roadway system in Chanhassen and county and regional roadway systems. 5. In developing the plan, roadway segments and intersections that cannot accommodate the anticipated vehicular travel demand should be identified. Functional Classification System The functional classification criteria were closely followed during the preparation of this plan. The intent of a functional classification system is the creation of a hierarchy of roads that collects and distributes traffic from neighborhoods to the metropolitan highway system in the most efficient manner possible given the topography and other physical constraints of the area. Places of high demand, employment or commercial centers, should be served by roadways higher in the hierarchy such as arterial roads. Neighborhoods and places of low demand should have roadways of lower classification such as collectors and local streets. It is in this way that the land use plan is inte- grated into the transportation plan. An important consideration in developing a functional classification system is adherence to the spacing criteria estab- lished by the Metropolitan Council (Table 6.4). The City of Chanhassen is currently considered part of the emerging suburban edge area. As a result, the city has a mixture of urban, suburban, and rural areas. It is anticipated, however, that the city will be fully developed by 2040. The ultimate roadway system assumes full development, but the cur- rent distinction between developing and rural is important in the establishment of implementation priorities. City of Chanhassen 2040 Comprehensive Plan119 TABLE 6.4 | Summary of Spacing Criteria Spacing (Miles) Metro Centers/ Regional Fully Functional Business Developed Developing Rural Classification Concentrations Areas Areas Areas Principal Arterial --2-3 3 -6 6-12 Minor Arterial 1/4 -¾1/2 -1 1 -2 As needed Collector 1/8 -½1/4 -3/4 1/2 -1 As needed Source: Metropolitan Council. The City of Chanhassen functional classification system is shown in below. The classification system is consistent with the preliminary changes that are being proposed by Carver County in the update of their transportation plan. Since the plan is still under development, there may be some further modification of the functional classification system. The functional classification plan includes the following categories: 1. Principal Arterials 2. Minor Arterials » “A” Minor Arterials » “B” Minor Arterials 3. Major Collector Streets 4. Minor Collector Streets 5. Local Streets City of Chanhassen 2040 Comprehensive Plan120 FIGURE 6.7 | Functional Classification Map City of Chanhassen 2040 Comprehensive Plan121 Principal arterials are the highest roadway classification and are considered part of the metropolitan highway sys- tem. These roads are intended to connect the central business districts of the two central cities with each other and with other regional business concentrations in the metropolitan area. These roads also connect the Twin Cities with important locations outside the metropolitan area. Principal arterials are generally constructed as limited access freeways in the developed area, but may also be con- structed as multiple lane divided highways. The following facilities are designated as principal arterials within the City of Chanhassen: Trunk Highway 7 TH 7 serves as a key east-west route through the south central portion of Minnesota. It connects the Twin Cities Metropolitan Area with cities such as Hutchinson, and Montivideo to the west. It is located in the northern portion of Chanhassen and provides regional access and mobility to primarily residential areas. In Chanhassen, vehicle movements are generally uninhibited by signals or major street intersections. To the east, however, Highway 7 passes through Minnetonka and northern Hopkins where there are more frequent signalized intersections and com- mercial development. The roadway carries substantial vehicular traffic and is considered congested (LOS F) during peak travel periods. East of TH 41, TH 7 is a four lane divided highway. West of TH 41, it is a two lane highway. Eventually, TH 7 should be upgraded to four lanes. U.S. Highway 212 The U.S. Highway 212 is a principal arterial and connects small rural communities to the Twin Cities Metropolitan area. In Chanhassen, U.S. Highway 212 travels diagonally across the southern third of the city. This facility was planned for many years and became operational in 2007. The route is a four lane divided facility with controlled access at two interchanges in Chanhassen, one at CR 101 and the other at CSAH 17. New Principal Arterial River Crossing Currently there is a lack of a principal north-south arterial route in the region. This is due to physical constraints such as Lake Minnetonka and Minnesota River bluff area as well as past travel patterns favoring east-west travel. However, as the urban area continues to grow, north-south travel demand is anticipated to increase. The spacing from the Bloomington Ferry Bridge (U.S. Highway 169) to CR 101 is approximately 7 miles. This is inconsistent with the functional classification guidelines. A north-south regional river crossing has been shown previously on the Metropolitan Council’s functional classification system. This route is intended to accommodate regional trips between new Highways 212 and 169. This route was designated a principal arterial route in lieu of designating the current alignment of TH 41 a principal arterial route. This was primarily done because TH 41 goes through downtown Chaska and has numerous access points and limited ability for capacity improvements. The existing river crossings on TH 41, CR 101 and U.S. High- way 169 are shown to be at capacity based on traffic forecasting work done for the Carver County Transportation Plan. Therefore, expansion of existing river crossings or an additional regional river crossing appears to be needed to address regional growth. As part of the review process for the river crossing, MnDOT had prepared a Tier I Environmental Impact State- ment (DEIS), TH 41 Minnesota River Crossing. The study process began in 2002. The scoping decisions for the environmental reviews were made in February 2005 and revised in February 2006. The DEIS review and comment period ended on August 10, 2007. The end result of the DEIS was to identify a preferred alignment for the new river crossing. The preferred alignment should be both a cost effective solution and minimize social, economic and environmental impacts. Once the preferred alignment is chosen, local governments will need to officially map the alignment in order to preserve it for the river crossing. The preferred alignment begins near the boundary of Carver City of Chanhassen 2040 Comprehensive Plan122 and Chaska, goes south of the Chaska Athletic Fields and then parallels TH 41 across the Minnesota River to U.S. Highway 169. A Tier I Environmental Impact Statement review was completed for the river crossing in 2015. This study was done so that a corridor could be selected for preservation for the future Minnesota River Crossing. The crossing will connect Highways 169 and 212, near Highway 41. MnDOT worked with the Federal Highway Administration (FHWA), local governmental units, the Metropolitan Council, state and federal resource agencies and other interest- ed parties to study the need for and potential impacts of this project. A Record of Decision was signed by the FHWA on March 16, 2015. Design details will be studied during a Tier II Environmental Impact Statement process that will occur closer to construction, which is not anticipated for several years. It is anticipated that this route will be a four lane divided highway with interchange access only. Minor Arterials Minor arterials are designed to emphasize mobility over land access, serving to connect cities with adjacent commu- nities and the metropolitan highway system. Major business concentrations and other important traffic generators are often located on minor arterials. In the metropolitan area, minor arterials are divided into two classes “A” Minor Arterials and “B” Minor Arterials. The number of lanes on arterial routes should be based on the projected volumes. Routes are likely to be constructed either as four-lane undivided roads or as three-lane roadways where there is insufficient right-of-way when the system is complete. » Relievers – Minor arterials that provide direct relief for metropolitan highway traffic. » Expanders – Routes that provide a way to make connections between developing areas outside the I-494, I-694 interstate ring. » Connectors – Roads that would provide good, safe connections to and among town centers in the transitional and rural areas in the area. » Augmenters – Roadways that augment principal arterials within the interstate ring or beltway. To the extent possible, “A” minor arterials are the most continuous and form a grid network over the entire city; however, topographic constraints and the location of existing highways and existing land uses can result in devia- tions from the spacing guidelines. Nevertheless, continuity and connectivity among the “A” minor arterials and the principal arterials allows the arterial network to provide important mobility functions throughout the city. In Chanhassen, the current spacing of “A” Minor arterials is approximately every one mile (spacing between TH 101, CSAH 17 and TH 41). The desirable spacing for “A” minor arterials is considered to be one half to 1 mile for fully developed areas. Because Chanhassen is anticipated to be fully developed by the year 2040, additional “A” minor arterials should be designated to maintain mobility throughout the city. The Minor Arterials that are recom- mended in Chanhassen include the following: 1. “A” Minor Arterials Trunk Highway 5 is important roadway in Chanhassen functioning as the city’s transportation backbone. In the early 1970’s, TH 5 was considered a principal arterial route. This designation has changed over time because of the close proximity of TH 7 and lack of continuity west of Carver County. Currently, TH 5 serves as the major link for Chanhassen to the metropolitan area. In addition, TH 5 provides regional access to a large number of businesses and industrial properties in the area. The concentration of these large employers results in some “reverse commuting” patterns as well as destinations for many trips coming in to Chanhassen from the west. Even though this route is designated as a minor arterial, it provides many functions similar to TH 7 and U.S. Highway 212 which are principal arterial routes. As a result, it is recommended that the city continue to support improvement and access management strategies that would maintain the mobility of this route. City of Chanhassen 2040 Comprehensive Plan123 Within Chanhassen, the flow of traffic along Highway 5 is interrupted by traffic signals at TH 41, Century Boule- vard, CSAH 19 (Galpin Boulevard), Audubon Road, CSAH 17 (Powers Boulevard), CR 101 (Market Boulevard), Great Plains Boulevard, Dakota Avenue, and Dell Road. There are no significant commercial or residential uses accessing directly onto Highway 5. Eastbound traffic on TH 5 typically connects with either I-494, U.S. Highway 169 and TH 62. From the Chanhassen border to I-494, TH 5 contains signalized intersections at Eden Prairie Road and Fuller Street. These signalized inter- sections combined with higher traffic volumes in Eden Prairie contribute to significant traffic delays during peak hours. TH5 is a four lane highway east of TH 41 and two lane west of TH 41. Eventually, TH 5 should be a four lane facility. Trunk Highway 41 – Hazeltine Boulevard Another “A” minor arterial that has many principal arterial characteristics is TH 41. This route is located in western Chanhassen and is a major north-south river crossing west of the Bloomington Ferry Bridge (nine miles to the east) that connects U.S. Highway 169, U.S. Highway 212, TH 5 and TH 7. As a result, this route will continue to be an important link serving Carver County and the City of Chanhassen. Chanhassen and Chaska have done a good job in protecting the mobility of this corridor by providing limited access and proper development setbacks. With other north-south corridors being limited, the volumes on this corridor are anticipated to increase as additional development occurs. Currently, TH 41 is a two lane highway through Chanhassen. Eventually, it should be a four lane facility. TH 101/CR 101 This designation is consistent with the Metropolitan Council’s Functional Classification Plan and Hennepin Coun- ty’s designation. This designation is consistent with the spacing guidelines for developing areas. The projected year 2040 daily volumes are at the upper limit or exceed the recommended guidelines for volumes. The roadway con- nects principal and other minor arterial routes thereby providing an important mobility function for the region. The city has historically limited direct access to Highway 101 and will continue to do so. North of TH 5, TH 101 is a two lane facility. South of TH 5 to CSAH 14 (Pioneer Trail), CR 101 is a four lane facility. CSAH 61 – Flying Cloud Drive After the construction of new U.S. Highway 212, old TH 212 (CSAH 61) was downgraded from a principal arterial route to an “A” minor arterial. Flying Cloud Drive is a two lane undivided highway with limited access control on the segment within Chanhassen; however, the river bluff substantially restricts the ability to access this route. The route continues to link Chaska and CR 101 river crossing with Twin Cities Metropolitan Area. The route fits the spacing guidelines for “A” minor arterial routes and provides east-west traffic flow below the bluff. In conjunction with the construction of the CR 101 river crossing, Carver County reconstructed CSAH 61 from Highway 101 to Bluff Creek Drive. A continuation of the improvements to CSAH 61 west of Bluff Creek Drive to Engler Boulevard is being reviewed by Carver County, Chanhassen and Chaska. However, this project is part of the county’s unfunded high priority roadway projects. Reconstruction of Flying Cloud Drive (CSAH 61) from Highway 101 in Chanhassen to Charlson Road in Eden Prairie (3.7 Miles) is programmed to begin in 2018. Hennepin County is leading this reconstruction project. The reconstruction includes: » Two-lane roadway with shoulders » Continuous Shared Center left-turn lane » Right-turn lanes at key intersections » Multi-use trail on north side of roadway » Raise road out of 100 year flood plain » Retaining Walls » Bridges » Intersection Improvements City of Chanhassen 2040 Comprehensive Plan124 CSAH 14 – Pioneer Trail County State Aid Highway 14 is currently classified as an “A” minor arterial based on the spacing with other similar east west routes and the connections that it provides to other arterial facilities: TH 41, CSAH 15, CSAH 17, and CR/TH 101. CSAH 15 – Audubon Road (Lyman Boulevard to south boundary)and Galpin Boulevard (TH 5 to Lyman Boulevard) Together these routes form a north-south connection between CSAH 61 and TH 5. This route meets the spacing with other similar north-south routes and the connections that it provides to other arterial facilities. It connects facilities such as CSAH 61, CSAH 14 (Pioneer Trail), CSAH 18 (Lyman Boulevard) and TH 5. North of CSAH 18 (Lyman Boulevard) the spacing of this roadway with CSAH 17 to the east is approximately one mile and the spacing of this route with TH 41 to the west is approximately one mile. However, there are physical barriers (Bluff Creek) that limit the connections between these routes. North of CSAH 18 (Lyman Boulevard) the spacing of this route with TH 41 to the west is approximately two miles and the spacing of this roadway with Powers Boulevard to the east is approximately one and one-half miles. As the City of Chanhassen develops, this facility will provide mobility for north-south traffic flow to important destinations within the city as well as the regional transportation system CSAH 17 – Powers Boulevard County State Aid Highway 17 is classified as an “A” minor arterial based on the spacing with other similar north- south routes and the connections that it provides to other arterial facilities. It connects facilities such as CSAH 14 (Pioneer Trail), U.S. Highway 212 (interchange), CSAH 18 (Lyman Boulevard), TH 5, and TH 7. The spacing of this roadway with TH 101 to the east is approximately one mile; however, there are physical barriers (lakes and wet- lands) that limit the connections between these routes. The spacing of this route with TH 41 to the west is approx- imately two miles. As the City of Chanhassen develops, this facility will provide mobility for north-south traffic flow to important destinations within the city as well as the regional transportation system. It is recognized that the character of CSAH 17 does change as it extends north into Hennepin County (CR 82). The roadway becomes nar- rower and setbacks are limited. 2. “B” Minor Arterials The Metropolitan Council defines all minor arterials other than “A” minor arterials as “B” minor arterials. These roadways also serve a citywide function. Medium to long distance trips use the “B” minor arterial system. When combined with the “A” minor arterial system, most places in the city are within a mile of such a roadway. There is one route in the City of Chanhassen that is proposed as “B” minor arterial. This route is described as follows: CSAH 18 – Lyman Boulevard Lyman Boulevard is designated as a “B” minor arterial. It is an east-west route that parallels TH 5 one to one and one-half miles to the south. It currently connects TH 41, CSAH 15, CSAH 17 and CR101; however an extension is planned to the west of TH 41. The spacing guidelines are consistent with designation of an “A” minor arterial for this route. However, we have chosen to leave the designation of Lyman Boulevard as a “B” minor arterial because it lacks of continuity east of TH 101. It is in close proximity to the arboretum and there are limited setbacks in the City of Victoria. Major Collectors Major collectors are designed to serve shorter trips that occur entirely within the city and to provide access from neighborhoods to the arterial system. These roads supplement the arterial system in the sense that they emphasize mobility over land access, but they are expected, because of their locations, to carry less traffic than arterial roads. City of Chanhassen 2040 Comprehensive Plan125 The following roadways are recommended as Major Collectors in Chanhassen. Minnewashta Parkway – This street serves as the only north/south route between TH 5 and TH 7 west of Lake Minnewashta. It is also located such that it likely serves some through trips from outside the city along TH 5, traveling to the north to TH 7, as well as locally generated traffic along its route. Galpin Boulevard (CR 117) north of TH 5 – This route connects TH 5 to Shorewood and Highway 7 and is approximately midway be- tween TH 41 and CSAH 17. Lake Drive – Lake Drive serves two functions: local access south of TH 5 and a parallel collector to TH 5. This route is capable of carrying off loaded local trips of short to medium length. The city undertook a joint project with MnDOT and the City of Eden Prairie to extend Lake Drive East to the city line where it merges with the signalized intersection at TH 5 and Dell Road. Pleasant View Road – Pleasant View Road serves as the only east-west connection between CSAH 17 and TH 101 in northern Chanhassen. Lake Lucy Road – Lake Lucy Road serves as the only east-west connection between TH 41 and CSAH 17 in northern Chanhassen. Coulter Boulevard – Coulter Boulevard serves two functions. These include local access south of TH 5 and a parallel collector to TH 5 capable of carrying off loaded local trips of short to medium length. West 78th Street – This east-west route connects TH 41 to TH 101. It parallels TH 5 and provides local access to the properties adjacent to TH 5. Minor Collectors Great Plains Boulevard – This route connects West 78th Street to Lake Drive East. Kerber Boulevard – This route connects West 78th Street in downtown Chanhassen to Powers Boulevard and is parallel to Powers Boulevard. Market Boulevard – This route provides a link between TH 5 and downtown Chanhassen. Century Boulevard – This route provides a north south link between West 78th Street, TH 5 and 82nd Street West. Bluff Creek Drive – This route provides a north-south connection from Bluff Creek Boulevard and Pioneer Trail (CSAH 14) to Flying Cloud Drive. Bluff Creek Boulevard – This route provides an east-west connection from CSAH 15 to CSAH 17 and U. S. Highway 212 interchange. The eastern portion of this roadway will be constructed with the development of the adjacent property. Dakota Avenue (TH 5 to Lake Drive East) – This route completes the connection of TH 101. Yosemite – Lake Lucy Road to city boundary provides a valuable link between Chanhassen and Excelsior. (This route has been added to the collector system since the 2030 Comprehensive Plan.) The ultimate roadway system is based upon the functional classification presented above. It reflects full development of the city according to the land use plan and socioeconomic forecasts presented earlier. The roadway cross-section identified for each classification would be expected to be in place at the time full development is achieved. 6.6 | Planned and Programmed Improvements Roadway Plan Traffic on Chanhassen’s roadway system will continue to increase due to new commercial, residential and industrial development and changes in socio-economic conditions. The impact of added traffic will be more evident on the arterial and collector routes. However, failure to address capacity issues on major routes will result in more traffic diverting to local streets. This can result in safety, speed and other undesirable impacts to collector routes. City of Chanhassen 2040 Comprehensive Plan126 In order to ensure that traffic concerns are addressed thoroughly and comprehensively, the transportation chapter of the Chanhassen Comprehensive Plan contains a planned and recommended roadway system for the year 2040. This system is the result of both current and past planning efforts. The following major improvements are components of the recommendedand planned transportation system: TH 5 – The city will continue to work to get TH 5 improved west of TH 41. The current Carver County Transportation Plan indicates a need for a four-lane TH 5 west toward Waconia to accommodate traffic flows. TH 101 – Planning efforts since 1980 have consistently identified the need for improvements to TH 101. Planned improvements north of TH 5 consist primarily of reconstruction and realignment of the route north of the intersection of TH101 and West 78th Street to effectuate better traffic flow. Based on traffic projections, a four-lane roadway may be required. CR 101 has been widened to 4-lanes and the alignment improved from TH 5 to Pioneer Trail (CSAH 14) On January 9, 2006, the city approved a Joint Powers Agreement with Carver County and the Minnesota department of Transportation to fund the corridor study from Lyman Boulevard (CSAH 18) to Scott County. The purpose of this study was to identify deficiencies and improvements necessary for a two-lane, 3.3 mile segment of TH 101 Corridor in Chanhassen between Lyman Boulevard (CSAH 18) on the north and the Scott County Line on the south. The city proposed that construction of this project be split in to at least two phases. Phase I would be from Lyman Boulevard (CSAH 18) to Pioneer Trail (CSAH 14), which has been completed. Improvements south of Pioneer Trail (CSAH 14) depend on MnDOT turn-back program funding or other funding sources. The road includes a four-lane design. The CR 101 river crossing completed in 2016 expanded the bridge to four-lanes to accommodate traffic with a pe- destrian trail on one side. In addition, the bridge was raised above the 100 year flood elevation. TH 41 – TH 41 needs to be upgraded to a four-lane cross section from TH 7 south to the County line. In addition, the ver- tical alignment of the south approach to TH 5 must be reduced to improve the safety of this heavily used intersection. New Regional River Crossing – U.S. Highway 212 to U. S. Highway 169 – Currently, TH 41 and CR 101 bridges serve the river crossing needs for the region. TH 41 is significantly over capacity. The expansion of CR 101 river crossing has improved traffic crossing the river. The city will work with adjacent communities, Mn/DOT, and the Metropolitan Council to determine potential alternatives to address capacity needs in the region. The regional river crossing will be a four-lane facility with limited interchange access. It is not currently in any funding plan. CSAH 18 (Lyman Boulevard) – Chanhassen, Chaska, and Carver County are currently working for the future improve- ment to Lyman Boulevard west of Galpin Boulevard. This roadway will require a four-lane design. CSAH 14 (Pioneer Trail) – This roadway provides a vital transportation connection from Hennepin County to western Carver County. Based on projected traffic volumes, a four-lane roadway design is required. Recommended Local Street Improvements As Chanhassen continues to develop, transportation conflicts and inconsistencies will become evident. These situ- ations, unlike planning for major routes, are not predictable since they result from the merging of existing and new land use patterns. The Comprehensive Plan can be a useful tool in assisting the city in resolving these local access situations. It is the city’s policy to require interconnections between neighborhoods to foster a sense of community, to improve safety and to provide convenient access for residents. City of Chanhassen 2040 Comprehensive Plan127 Often during the subdivision review process, the need for future extension of local streets becomes apparent. As a result, access concepts are developed to assist in creating an acceptable configuration for the plat and as a guide for the future development of adjoining parcels. It is the city’s intent that the Comprehensive Plan serve as an imple- mentation tool by providing a means by which to record these access plans, legitimizing them by the nature of the fact that they are approved by the City Council prior to recording. It also will provide a useful means of providing information to residents and developers seeking information of future development potential. These concept plans are illustrated below. Additional concept plans will be added to this document over time as they are developed. These concept plans are illustrated below. Additional concept plans will be added to this document over time as they are developed. Bluff Creek Boulevard – The final connection from Powers Boulevard to the westerly terminus of the roadway will be constructed with the development of the underlying properties. North and South 2005 MUSA Collectors – The connection from Bluff Creek Boulevard to Lyman Boulevard will be constructed in conjunction with the development of the underlying properties. The south connection was construct- ed in conjunction with the Pioneer Pass development (Bluff Creek Drive). Eagle Ridge Drive east-west connection – This roadway will connect CSAH 17 to CR 101. The first section of this roadway was installed in the Foxwood development. The remainder of the connections will be constructed with the development of the properties in the area. It should be noted that this connection will likely provide additional connections to West 96th Street and Homestead Lane. Dogwood Road/Crimson Bay Road – Crimson Bay Road does not connect to Dogwood Road. Correspondingly, the Crimson Bay neighborhood has only one means of egress/ingress. A future street connection in this area is needed to alleviate existing access problems. Carver Beach Road Conditions – Chanhassen’s Carver Beach neighborhood was one of the first residential develop- ments on Lotus Lake. This area consists of smaller lots and narrow rights of way. Drainage problems occur due to topography and a lack of storm sewer facilities in some portions of the area. Improvement of existing conditions can only occur in a comprehensive manner involving the reconstruction of both streets and utility systems. Because of development constraints, typical street standards will not be applicable in this area. Nez Perce/Pleasant View Road Connection – During review of the Vineland Forest plat, it was evident that a connec- tion between Nez Perce/Lake Lucy Road and Pleasant View Road was warranted since there was no north/south connection between County Road 17 and Lotus Lake. Improved access is needed for local trips and to ensure the adequate provision of emergency services. At the same time, there were concerns voiced regarding the introduction of additional trips onto Pleasant View Road since the street already suffers from capacity and design constraints. Therefore, it was determined that the Pleasant View Road intersection should be located as far west as possible at the Peaceful Lane intersection. Timberwood Drive/Stone Creek Court – The neighborhoods of Timberwood Estates and Stone Creek are separated by approximately 30 feet of unfinished roads. This connection would permit the residents of Timberwood Estates to ac- cess the Bluff Creek trail system. In addition, this connection could provide a secondary access for Timberwood Es- tates for residents and emergency vehicles. It would also facilitate improved school bus access to the neighborhood. Pipewood Lane and West 62nd Street – A secondary access to this area was discussed as part of the plat for Hidden Creek Meadows. Cathcart Lane is a substandard gravel roadway that provides emergency access to the area. With the future development of the farmstead, a public street will connect these roadways. City of Chanhassen 2040 Comprehensive Plan128 6.7 | Alternative Modes Transit Although private cars are the most commonly used mode of transportation for Chanhassen residents, mass transit serves as an important alternative to automobile uses and serves as one leg of a multi-modal transportation strategy for the community. The City of Chanhassen lies within the Metropolitan Council’s Transit Market Area III, which represents areas with generally lower concentrations of activity, housing and jobs, with intermittent pockets of mod- erate concentrations. Metropolitan Council service options for this area include peak-only express, small vehicle dial-a-ride, mid-day circulators, special needs para-transit (ADA, seniors) and ride-sharing services which are, gen- erally, tied to park-and-ride lots and hubs. Two forms of mass transit, buses and light rail/commuter rail, are specific components of this plan. Plans for these services are outlined as follows: Buses In late 1986, Chanhassen joined the cities of Eden Prairie and Chaska in the creation of the Southwest Metro Transit Commission, operated under a joint powers agreement between the communities, to provide transit service known as the Southwest Transit (SWT). SWT is governed by a seven-person Commission. Each of the three cities has an appointed member as well as an elected official. The seventh member is a representative of the riding public. The city will continue to monitor the effectiveness of the Southwest Transit program in providing cost effective transit service to the City of Chanhassen. Public transit service is provided for Chaska, Chanhassen and Eden Prairie, as well as Carver and Victoria. SWT currently offers service to and from Downtown Minneapolis, the University of Minnesota, Normandale Community College, Best Buy Headquarters and Southdale Transit Center. Park and Ride SWT has two park and ride parking ramps within Chanhassen. These ramps are located in the downtown area off Great Plains Boulevard and Market Street (Chanhassen Transit Station) and at U.S. Highway 212 and CR 101 (Southwest Village). In addition, SWT has parking facilities in Eden Prairie at U.S. Highway 212 and Prairie Center Drive (Southwest Station) in Chaska at U.S. Highway 212 and TH 41(East Creek Station) and in Carver at Jonathan Carver Parkway and Ironwood Drive (Carver Station). Southwest i Planned Park Existing Park City of Chanhassen 2040 Comprehensive Plan129 There are several services provided by Southwest Transit: Express Service – This service provides express service for passengers working in downtown Minneapolis. Riders are picked up at any of the park and ride lots servicing Chanhassen and driven to downtown Minneapolis and the University of Minnesota without stopping. At the end of the workday, the service is reversed taking passengers back to Chanhassen. Southwest Flex Commute – These routes start in Minneapolis and bring passengers to job sites in Chanhassen, Chaska and Eden Prairie. The city’s rapid growth as an employment concentration warrants service to facilitate work trips. SW Flex services provided over 65,000 trips in 2017. Regional Routes – SWT has 80 buses and offers service to Downtown Minneapolis, the University of Minnesota, Southdale Shopping Mall and regional employment centers. Special seasonal routes are also provided to the Minne- sota State Fair, US Bank Stadium and Target Field. Bus shoulder use is permitted on Highways 5 and 212. SW Prime – An on demand ride service to help transit users bridge the gap between transit stations and final desti- nations. This service typically has between 350 and 400 daily users. SW Prime is a transit service for Eden Prairie, Chaska, Chanhassen, Carver, and Victorian. To transfer between zones, riders are dropped off and picked up at SW Chanhassen Village station on Hwy. 212 and Hwy. 101. As a modern local service, riders may request a ride through smartphone app, website or phone, indicate the location from which they want to be picked up and where they want to go. SWT vehicles are ADA compliant. Other Services – Because the agency’s mission is to meet the transit needs of the community, Southwest Transit provides a variety of other transit opportunities. For example, group rides are available for a variety of businesses, schools, organizations and others. Whenever possible, Southwest Transit provides buses for little or no charge for community purposes in Chanhassen and other service communities. SWT has also begun (2014) a seasonal and daily bike rental opportunity (SW Rides) from several of its transit sta- tions. This program is run from April through October. SWT offers travel training services to seniors and other community organizations to promote existing services and help people understand who to use the transit services provided by SWT. SWT provides business out-reach service to Chanhassen businesses in order to help tailor transit services that will meet the transportation needs of local businesses. Non-SWT Services Metro Mobility Is a shared public transportation service for certified riders, who are unable to use regular fixed-route buses due to a disability or health condition. Rides are provided for any purpose. SmartLink Transit (Formerly known as Carver County Transit), provides services to transit dependent residents of Carver and Scott counties. It includes Dial-A-Ride, Medical Assistance and Volunteer Drivers for both Scott and Carver counties. Pri- ority will be given to elderly, disabled, and economically disadvantaged residents. Transitlink is a small bus, curb to curb, reservation only, regional dial-a-ride. Smartlink averages over 400 passenger trips per day in Carver and Scott Counties utilizing 23 buses. WeCAB (Community Area Busing) Provides safe, affordable and flexible supplemental transportation to those who are unable to drive to medical appointments, grocery store or food shelf, church, volunteering or social events. City of Chanhassen 2040 Comprehensive Plan130 Rail Service Twin Cities and Western Railroad (TC&W) runs through the city entering just north of Highway 5 at Dell Road and cuts diagonally to Lyman Boulevard at Galpin Boulevard. TC&W is a regional railroad operating over 229 miles of track serving some of the most productive agricultural counties in Minnesota and South Dakota. In- terchanging with all the Class 1 railroads in the Twin Cities, TC&W provides a connection for the surrounding areas. Operating as far east as St. Paul, Minnesota and as far west as Milbank, South Dakota, the TC&W is the largest shortline in Minnesota. Depending on freight requirements, there are between 1 and 10 daily trains through the community. Light Rail Transit Light rail transit is a mode of transportation that is being constructed in the Twin Cities Metropolitan Area. In 1987, Hennepin County received authorization from the State Legislature to prepare a Comprehensive LRT System Plan for Hennepin County. Toward that end, the county established the Hennepin County Regional Railroad Au- thority to administer the system. Hennepin County owns railroad right of way from downtown Minneapolis to Victoria and Chaska. Other counties in the metropolitan area have followed Hennepin County’s lead and have also established railroad authorities. 36 FIGURE 6.9 | Green Line LRT Map FIGURE 6.8 | Blue Line LRT Map City of Chanhassen 2040 Comprehensive Plan131 FIGURE 6.8 | Blue Line LRT Map FIGURE 6.10 | Green Line Extension There are multiple agencies involved in planning and implementing transitways in the Twin Cities region. Local governments, particularly counties and regional railroad authorities, play a lead role in the planning of transitway corridors and recommending locally preferred alternatives. The Minnesota Department of Transportation (MnDOT), Metropolitan Council and Metro Transit, Counties Transit Improvement Boar (CTIB), counties and cities are in- volved in the funding, design, and construction of transitway facilities and services. Currently, the Blue Line connecting downtown Minneapolis to Bloomington and the Mall of America and the Green Line Connecting the downtowns of Minneapolis and St. Paul are in operation. Southwest Light Rail Transit (Green Line Extension) The Southwest Light Rail Transit (LRT) project (METRO Green Line Extension) will operate on a route from downtown Minneapolis through the communities of St. Louis Park, Hopkins, Minnetonka, and Eden Prairie, passing in close proximity to Edina. The 14.5 mile line will include 15 new stations and will be part of an integrated system of transitways, including connections to the METRO Blue Line, the Northstar Commuter Rail line, many bus routes, and proposed future transitways. The total estimated project cost of $1.858 billion will be funded by the Metropol- itan Council and project partners through a mix of federal, state, and local sources, with federal funds making up approximately half the total. At Target Field Station in Minneapolis, Green Line Extension trains will continue along the METRO Green Line, providing on-seat rides to the University of Minnesota, State Capitol area, and downtown St. Paul. The Southwest LRT line is anticipated to begin construction in 2019. City of Chanhassen 2040 Comprehensive Plan132 FIGURE 6.11 | Blue Line Extension Bottineau LRT Line (Blue Line Extension) An approximately 13-mile route will serve down- town Minneapolis, north Minneapolis, Golden Valley, Robbinsdale, Crystal and Brooklyn Park. Eleven new stations will be built, in addition to Target Field Station. The total project cost is esti- mated at $1.536 billion, funded by a combination of federal, state and local sources. Construction is anticipated to begin in 2020. Commuter Rail Commuter rail is a passenger train service that connects an urban region over moderate distances; which typically operates on existing freight tracks; and whose primary clientele travels between home and work. These trip-to-work services usually offer concentrated frequencies primarily during rush hour with suburban station spacing typically every five miles. Commuter rail typically serves longer trips than most light and heavy rail transit lines. Commuter rail trains are normally made up of a locomotive and several passenger coaches. Commuter rail vehicles have an on-board operator, who adjusts vehicle speed in response to traffic conditions and railway signaling requirements. City of Chanhassen 2040 Comprehensive Plan133 FIGURE 6.12 | Transitway Corridors The Northstar rail line from Big Lake to Minneapolis with stops in Elk River, Ramsey, Anoka, Coon Rapids, and Fridley is the first example of commuter rail in Minnesota. The Northstar Commuter Rail line opened in 2009. The Northstar Expansion proposes to extend service to St. Cloud. Regular weekday service is designed for commuters and is available during the morning and afternoon peak-travel periods. The morning commute period features five inbound trains and one outbound train; the late-afternoon and early-evening commute features five outbound trains and one inbound train. There are three roundtrips each week- end day with special event service available throughout the year. Metro Transit schedules additional trips to provide Northstar service to all Minnesota Twins and Minnesota Vikings games and other large downtown events. The city supports the continuing investigation of commuter rail as a transportation alternative for the community, the region, and the state. The Twin Cities & Western Line, which runs through the heart of Chanhassen, is a possi- ble route. The city has advised the Metropolitan Council that any commuter rail station located within Chanhassen would need to be located between Market Boulevard and Great Plains Boulevard in downtown Chanhassen. The downtown location meets the standards of the transit-oriented development (TOD). The core area of the TOD is a relatively dense mixed-use development and constitutes from one-tenth to one-half the total TOD area. The main characteristics include: » Residential (20 to 30 percent of the TOD area), » Employment uses (20 to 30 percent of the TOD area), and » Civic uses (about 10 percent of the TOD area). In 1997, the Minnesota Legislature instructed the Minnesota Department of Transportation (MnDOT) to conduct a feasibility study to determine if the Twin Cities Metropolitan Area could support commuter rail service. Out of 19 rail corridors studied, six proved to be feasible of supporting commuter rail. Those six lines were divided into two tiers. Tier I included the Northstar Corridor between Minneapolis and St. Cloud, the Red Rock Corridor between Minneapolis and Hastings and the Dan Patch Corridor between Minneapolis and Lakeville. Tier II included the Bethel Corridor, the Rush Line Corridor and the Norwood-Young America Corridor. The city supports the classifi- cation of the Norwood-Young America Corridor as a Tier I commuter rail corridor. City of Chanhassen 2040 Comprehensive Plan134 In January 1999, MnDOT presented the results of the Twin Cities Metropolitan Commuter Rail Feasibility Study to the Minnesota Legislature. After hearing those results the legislature passed M.S. 174.80 to 174.90 which gave the Commissioner of MnDOT the authority to plan, design, construct, and operate commuter rail in the State of Minne- sota. Further, the Commissioner was charged with the responsibility of developing a commuter rail system plan that would ensure that, if built, commuter rail would be part of an integrated transportation system that would interface with all other forms of transportation including LRT, buses, park and ride, bicycles, and pedestrians. In developing the Commuter Rail System Plan, MnDOT has built on the results from the Twin Cities Metropolitan Commuter Rail Feasibility Study and in particular the implementation strategy presented in the final report. FIGURE 6.13 | Commuter Rail System Travel Demand Management Travel Demand Management (TDM) programs will also provide an opportunity to reduce travel demand on the regional highway system. The employment concentrations anticipated for the area, particularly in the office complexes, provide the city with a tremendous opportunity to implement TDM programs. As part of its standard approval process, the city will work with new employers locating in the study area to ensure that employers will: » promote carpooling by providing information on carpooling and vanpooling to employees on a regular basis, providing preferential parking and guaranteed-ride home; » encourage employees to participate in Minnesota Rideshare’s ride-matching program; » Rail Corridors offer employees flexible work hours and set a goal to reduce peak hour trips by 10 percent; and » participate in a Travel Demand Management Organization specifically set up for major employers. This group will consider TDM mea sures that require cooperation among several employers such as, but not limited to: » staggered start times » van-pools » trip reduction goals » transit subsidies City of Chanhassen 2040 Comprehensive Plan135 In addition, every employer, regardless of size, will be required to provide a convenient carpool/vanpool drop-off site that does not interfere with other traffic. This drop-off site will be consistent with applicable Americans with Disability Act requirements. The city may allow a group of employers to provide a shared drop-off site as long as the site is accessible to all participating employers. It will be the goal of the city to reduce peak hour trip generation to and from the study area by 10 percent through the use of a combination of transit service and TDM programs. The city supports investigation of TDM strategies to reduce trip levels on area roads. The city will be advocating the development of a multi-community, multi-county partnership with the business community to promote these strategies. Airports There are no existing or planned airports within the City of Chanhassen. Commercial air service is available at Twin Cities International Airport and general aviation is available at Flying Cloud Airport in Eden Prairie. Flying Cloud Airport is approximately 4 miles east of the City of Chanhassen. A small portion of the City, located in the southeast portion of the city, is within the Flying Cloud Airport (FMC) Air Space Zone height limits. The FMC Airspace zoning limits are located around Lake Riley and are not within a land use limitation district but is restricted by height. This area is guided low, medium density and is mostly developed, except for the area of the old mining site along County Road 61. The mining site is guided for high density. Munici- pal services are not available is this area, but it is anticipated that they will be when TH 101 is reconstructed. Despite the lack of airports in Chanhassen, the city has two primary aviation concerns: first - physical obstructions are controlled, and second - seaplane operations. At the present, the tallest manmade structures within Chanhassen are the city’s water towers, which average 135 feet. Structures under 200 feet are not considered obstructions under state rules. Radio towers are the only potential structures that may exceed the 200 foot threshold. If proposals for towers occur, the city will require that they comply with all State, Federal and local requirements. The highest structures permitted in the city are cell towers. They limited in height to 200 feet in the city code. The Code further states: The applicant is responsible for receiving approvals from the Federal Aviation Administration, Federal Communications Commission, and any appropriate state review authority, stating that the proposed tower complies with regulations administered by that agency or that the tower is exempt from those regulations.” Lakes Minnewashta and Riley are used by seaplanes. To date, there have been few conflicts between boat traffic and seaplane usage. Continued usage in these areas is not viewed as a major issue due to the small number of aircraft and off peak hour operation by their owners. If in the future the numbers of aircraft increases or the potential for serious usage conflicts occurs, the city may work with the State and regional authorities to limit or ban seaplane usage. Pursuant to Minnesota Administrative Rules 8800.2800, planes may land on any lake that is frozen. City of Chanhassen 2040 Comprehensive Plan136 Autonomous Vehicles An autonomous car (also known as a driverless car, auto, self-driving car, robotic car) and Unmanned Ground Vehi- cle is a vehicle that is capable of sensing its environment and navigating without human input. Many such systems are evolving, but as of 2017 no cars permitted on public roads were fully autonomous. They all require a human at the wheel who must be ready to take control at any time. Autonomous cars use a variety of techniques to detect their surroundings, such as radar, laser light, GPS, odometry, and computer vision. Advanced control systems interpret sensory information to identify appropriate navigation paths, as well as obstacles and relevant signage. Autonomous cars must have control systems that are capable of analyzing sensory data to distinguish between different cars on the road. The potential benefits of autonomous cars include reduced mobility and infrastructure costs, increased safety, in- creased mobility, increased customer satisfaction and reduced crime. Specifically, it could lead to a significant reduction in traffic collisions; the resulting injuries; and related costs, including less need for insurance. Autonomous cars are predicted to increase traffic flow; provided enhanced mobility for children, the elderly, disabled and the poor; relieve travelers from driving and navigation chores; lower fuel consumption; significantly reduce needs for parking space; reduce crime; and facilitate business models for mobility as a service, especially via the sharing economy. Among the main obstacles to widespread adoption are technological challenges, disputes concerning liability; the time period needed to replace the existing stock of vehicles; resistance by individuals to forfeiting control; consumer safety concerns; implementation of a workable legal framework and establishment of government regulations; risk of loss of privacy and security concerns, such as hackers or terrorism; concerns about the resulting loss of driv- ing-related jobs in the road transport industry; and risk of increased suburbanization as travel becomes less costly and time-consuming. Many of these issues are due to the fact that autonomous objects, for the first time, allow com- puters to roam freely, with many related safety and security concerns. (Wikipedia September 19, 2017) As autonomous vehicle technology continues to evolve and gain acceptance and use, the city will follow and evalu- ate the potential of such vehicles and its implications to city regulations and design requirements. Trails and Sidewalks The sidewalk and trail system is discussed and mapped primarily as part of the recreation and trail chapter in the Comprehensive Plan. The city desires to be pedestrian friendly. To accomplish this, the city must assure that city improvements and private developments provide pedestrian and bicycle linkages. An integral component of the transportation system is the pedestrian and bicycle sidewalks and trails. Trails also provide a health benefit to res- idents and visitors to the city. The city continues to plan for an extensive trail system throughout the community. These trails will provide linkages between individual neighborhoods as well as connecting these neighborhoods to the rest of the community. As new development is proposed and reviewed, the city will continue to require that these pedestrian linkages be included as part of the project. » Total Number of Trails: 95.3 miles » Total Number of Sidewalks: 32.1 miles 6.8 | Relationship of the Transportation Plan to the Metropolitan System In 2015, the Metropolitan Council issued a Systems Information Statement to the City of Chanhassen. The city was encouraged to address issues identified in the Statement and to ensure that planning in Chanhassen was consistent with the Metropolitan Council’s newly revised Transportation Policy Plan. This section is intended to identify how the revisions to the city’s Transportation Plan support the Metropolitan Council’s Plan. City of Chanhassen 2040 Comprehensive Plan137 As the region continues to grow, utilization of the metropolitan highway system is expected to increase. In some cases, these facilities will become congested. Due to the regional function that these facilities perform, many of the factors affecting segments that are in the City of Chanhassen are beyond the city’s control. Nevertheless, the city supports the desire to resolve transportation issues by coordinating its own efforts with those of adjacent communi- ties, Carver County, MnDOT and the Metropolitan Council. To this effect, the city has undertaken a comprehensive approach for dealing with these transportation issues. This approach considers the following methods for dealing with current and future problems: (1) an updated roadway plan, (2) support of regional programs and activities; and (3) initiation of a TDM program. The city’s approach to each of these is described below: 1. The city has adopted a Transportation Plan that recognizes the need to support the metropolitan highway system. The major elements of the new plan are: » An arterial and collector system spaced in accordance with Metropolitan Council guidelines contained in the Transportation Policy Plan. » An arterial system that provides both east-west and north-south continuity between the City of Chanhassen and adjacent communities, thus providing alternatives to the metropolitan system for medium- and long-distance inter-community trips. » Arterial and collector roadways that are parallel to the metropolitan system, thus providing alternate routes for short and medium length trips and eliminate them from the metropolitan system. 2. The City of Chanhassen supports Metropolitan Council and MnDOT plans to improve the metropolitan transportation system in the following areas: » The city will coordinate site-specific installations with MnDOT in order to develop geometric designs at access streets that will accommodate the resulting queues and reduce the traffic impacts on the local street system. » The city supports the efforts of MnDOT to construct a new Minnesota River Crossing. 6.9 | Plan Implementation Previous sections have examined future travel demand, have suggested guidelines for developing a Transportation Plan, and have recommended a Plan that is responsive to these considerations. This section concentrates on examin- ing the steps necessary to implement the Transportation Plan. It discusses a general strategy for moving from 2007 to the future in accomplishing the plan. Transportation Plan Adoption By adopting the Transportation Plan, the City Council will establish the guidelines by which decisions regarding transportation facilities will be made in Chanhassen. It should be revised as necessary to respond to changing condi- tions and needs. The city should periodically review the assumptions under which the plan was developed, including estimates of future development, population trends, changing financial resources, energy considerations, and citizen and governmental input, and update the plan accordingly. The plan should be circulated widely so that residents and the business community are aware of the opportunities and limitations that the plan provides, thus enabling all interested parties to plan with full knowledge. Jurisdictional Realignment Process In general, it is good policy that Carver County and the State (MnDOT) assume responsibility for the arterial sys- tem, and that the city assume responsibility for the collector and local street systems. This is, to a large extent, the situation in Chanhassen. Currently, Carver County has not accepted the turnback of TH 101 south of CSAH 18. Other roadways that are under consideration for jurisdiction change include: City of Chanhassen 2040 Comprehensive Plan138 » County Road 117 (Galpin Boulevard) from TH 5 to the north city limit (turnback from county to city). This roadway is designated as a local collector street and does not function to serve regional or inter-county type traffic. However, this roadway meets a rural design standard and should be upgraded to an urban design with capacity improvements prior to the city accepting jurisdiction. » TH 5 and TH 41 – The TSP developed by MnDOT indicated that all non-principal arterial routes in the metropolitan area should be con sidered for turnback. This included both TH 5 and TH 41. These routes currently play a critical role in the region. A jurisdictional change should not be considered unless a new river crossing is made linking U.S. Highway 212 and U.S. Highway 169. Access Management The City of Chanhassen, through its ordinances, has authority to approve developments contiguous to city streets. As part of this process, the city will work with MnDOT and Carver County on managing access to all arterial and important collector routes within the city. Access management will help maintain mobility and provide increased safety for route users. Access guidelines will be developed as part of the Carver County Transportation Plan. The city will assist in this process by carefully considering any parcel splits along arterial corridors, promoting frontage roadways to serve developments rather than direct access. In addition, the city will make available any access guide- lines to developers so that they are aware of limitations prior to beginning preliminary platting of property. Establish Improvement Programs An overall strategy of improvement, tempered by fiscal constraints, begins with an analysis of key intersection capacity improvement projects, safety improvements and the protection of access by establishing strict standards and by designating necessary right-of-way. Identifying future needs for facility rights-of-way followed by timely “set-aside” programs will, in the long run, save the community much in the way of financial resources. Roadway improvements should also be geared toward providing for transit needs, particularly in the area of meeting turning radii, traffic signals and adequate roadway structure. It should be pointed out that non-motorized travel needs must also be carefully considered. Chanhassen will continue its policy of designating sufficient right-of-way to provide for sidewalk and bikeway needs. 6.10 | Sources of Funding Roadways under city jurisdiction are maintained, preserved, constructed and re-constructed by the city’s Department of Public Works. Rehabilitation and reconstruction pojects are typically performed by a contractor under supervision of the city’s Engineering Department. Funding for these activities, including the administrative costs of operating the department, are obtained from a variety of sources including ad valorem taxes, special assessments, development fees, Municipal State Aid, state and federal project funding and tax increment financing. A major concern of the city is the availability of sufficient funds for maintenance and construction activities. If funds are unavailable, needed projects may be delayed or terminated and maintenance of existing facilities may fall short of acceptable standards. The following discussion explains the existing sources of funding and potential new sources of revenue. State Aid An extremely important source of revenue to the city is state-aid. A network of city streets called Municipal State- Aid Streets is eligible for funding assistance with revenue from the Highway User Tax Distribution Fund. This fund acts as a distribution or tax clearance fund, and tax income received into the fund is transferred to various transpor- tation related funds for expenditure. The fund receives revenue from two principal sources: 1) gasoline taxes, and 2) vehicle registration taxes. These two sources are permanently dedicated to this fund. Ninety-five percent of the net proceeds of the Highway User Tax Distribution Fund are distributed annually according to a constitutionally man- dated formula: 62 percent to the Trunk Highway Fund, 29 percent to the County State-Aid Highway Fund, and 9 percent to the Municipal State-Aid Street Fund. City of Chanhassen 2040 Comprehensive Plan139 Assessments Property that benefits from a roadway scheduled for improvement may be assessed for a portion of the cost of construction. In order to assess a property owner, it must be demonstrated that the property will benefit from the improvement. For this reason, it is a limited source of revenue. It is also limited by the almost certain requirement that the property must have access to the roadway. Since 1989, the city has generally been following the following assessment practices. This assessment practice is intended to provide direction to city staff in preparation of assessment rolls to ensure fair and consistent treatment of all properties within the City of Chanhassen. Maintenance (Pothole filling, patching, crack sealing seal coat.) Maintenance costs are not assessed to abutting property owners. Maintenance is financed through the city’s Annual Budget process. Rehabilitation (Repair of problem areas to full depth, milling of edge or full width of existing pavement, repair to existing catch basins and/or curb and gutter, pavement overlay.) Total Project Cost = 60% paid by city + 40% assessed to abutting (city share may be MSA, General property owners TIF, Federal or State grants, etc.) Residential properties abutting collector or commercial streets shall be assessed using the same formula; however, the assessments shall be reduced to be equivalent to a typical 31-foot residential street section. Reconstruction Removal of existing street and construction of new street. May include sanitary sewer or water main and stormwater improvements. May recycle the existing asphalt as gravel base. Reconstruction cost are assessed using the same formula as Rehabilitation. New Construction Construction of new streets or utilities or a significant upgrade from the previous facilities, e.g., a 4-lane street replaces and existing 2-lane. New construction will be assessed 100% to the benefiting properties. Note: If a feature (sanitary sewer, water curb and gutter, etc.) that did not previously exist is added during a rehabilitation or reconstruction project, that cost of that item is treated as new construction with the remaining project costs being treated as rehabilitation or reconstruction. Work done by city crews may be maintenance, rehabilitation or new construction. This work is not typicall assessed. Exceptions would include work associated with an assessment agreement signed by the property owner and approved by City Council and work specifically authorized by the City Council to be done by city crews and assessed to the abutting properties. Ad Valorem Taxes If 20 percent of the cost of a city project can be assessed to the adjacent property owners, the remaining cost of the project can be added to the ad valorem or property taxes of the remaining property owners in the city. Ad valorem taxes for street improvements are excluded from the state mandated levy limits. City of Chanhassen 2040 Comprehensive Plan140 Property Tax Funding The seven metropolitan counties – through their regional railroad authorities – are authorized by State Statute to im- pose levies on real estate of up to a maximum of 0.04835% of market valuation to pay for capital and/or operating costs of passenger rail service. Tax Increment Financing Establishing a tax increment financing (TIF) district is a method of funding infrastructure improvements that are needed immediately using the additional tax revenue to be generated in future years by a specific development. Municipal bonds are issued against this future revenue which is dedicated for a period of years to the repayment of the bonds or to other improvements within the TIF project area. When used appropriately, a TIF can accelerate economic development in an area by insuring that the needed infrastructure is in place without requiring support from the usual funding. This method of financing has already been used successfully in the City of Chanhassen and is expected to be used again in selected areas in the future. Potential Source of Revenue Revenues available from current sources of funding are not always sufficient to meet highway maintenance and con- struction needs. In order to reduce the potential shortfall of revenue, other sources of funding need to be considered. Franchise Fee – Every City has a franchise agreement with each utility company (gas, electric, etc.) for their use/rent of city owned right-of-way for their business purposes. » Right-of-way is City property devoted for roadway purposes but is also used for utilities, trails and sidewalks, and snow storage. » By law, Cities may charge utilities a fee for use of city right-of-way. Utility providers will likely pass this fee onto their customers. The franchise fees could be set aside in a dedicated fund to be used solely for expenditures related to pavement man- agement program projects such as street overlays and reconstruction, and trail improvement projects. Impact Fees – Impact fees are assessed to individual developers as property is improved. An attempt is made to deter- mine what impact the additional traffic will have on roadways both near the development and away from it. The cost associated with improving the roadway system sufficiently to handle the additional traffic is assessed to the developer. Road Access Charge – Impact fees are assessed after an attempt is made to determine the specific impacts of a spe- cific development. A road access charge would be assessed all new development based on the trip generation rate of the new development but without documenting specific impacts. Revenues from this funding source would be used to construct or improve arterial and collector streets in the jurisdiction collecting the tax. New legislation would be required for this type of funding mechanism to be implemented. Cities are in a position to assess these fees because of their zoning and development authority. Transportation Utility Billing – Under the concept of a municipal transportation utility, all properties would be subject to a periodic fee (i.e., monthly, quarterly), based upon the number of vehicle-trips generated by the type of property. This revenue would then be used for transportation improvements that produce community-wide benefits including the reconstruction of existing roads and preventive maintenance to reduce deterioration. Such a fund would be es- pecially useful for the maintenance of collector streets which are under the city’s jurisdiction, particularly when it is difficult to show enough direct benefit to adjacent property owners to be able to charge an assessment. The periodic nature of the utility billing would also provide a stable source of income to support a regular maintenance program for the entire street system. Such a utility would be administered by individual cities, with each city deciding on their own fee structure. At the present time, this sort of revenue source is not permitted by the state, but efforts are underway to persuade the State Legislature to pass legislation allowing the cities to obtain revenue in this way. City of Chanhassen 2040 Comprehensive Plan141 Wheelage Tax – Any city (Minnesota Statutes Section 426.05) or metropolitan county board of commissioners (Minnesota Statutes Section 163.051) may impose an annual wheelage tax upon motor vehicles using the public streets or highways. Carver County currently imposes a wheelage tax for roadway improvements in the County. Local Planning Policies Chanhassen has different policies pertaining to construction standards for urban versus rural local streets. Urban road- ways are required to dedicate 60 feet of right of way for local streets and 31-foot wide pavement width. Rural roadways are also required to have a bituminous surfacing 24 feet wide contained within a 60 foot right of way. Right-of-way widths may be reduced to 50 feet if there is extenuating environmental or physical constraints on a property. Current city policy also allows the construction of private streets. Up to four single-family residences may be served via a private street if it is demonstrated to be unfeasible or unnecessary to construct a public street. In such cases, 30 feet of easement is required with the roadway consisting of a 20-foot wide paved surface. Multi-family private streets require 24 feet of paved surface in a 40-foot easement. Commercial, industrial, and office development may be served by 26-foot wide paved private streets within a 40-foot wide access easement. 6.11 | Pavement Management Historically, the emphasis for growing communities has been building roads and implementing preventive main- tenance due to the relatively new network system. But as street networks age, the new focus is on maintaining and preserving existing pavement surfaces. A pavement management program is a systematic approach to using a series of pavement treatment options over time. One treatment at the right time will improve the quality of the pavement surface and extend the pavement life, but the true benefits of the pavement management program are realized when there is a consistent schedule. An effective pavement management program integrates many preventive maintenance strategies, rehabilitation and reconstruction treatments. The goal of such a program is to extend pavement life and enhance system-wide perfor- mance in a cost-effective and efficient way. Studies show that preventative maintenance is six to ten times more cost effective than a minimal maintenance program with only some rehabilitation and reconstruction maintenance strategies used. The City of Chanhassen recognizes that the street infrastructure is an asset to the community that needs to be maintained. In 2004, the city began a pavement management program to identify long-term needs of the city street network. The objective of the program is to have a long-term pavement management plan that can realistically be funded and does not have significant peaks and valleys in the annual budgets. Also, the program will help identi- fy projects long term that will give residents some idea when their street will be proposed for improvements. The program is structured to propose projects when projects are warranted and to have a consistent methodology for proposing street improvement projects. Over the past years, staff has used this information to ascertain which streets require improvements and what type of improvement is required. There are three main types of pavement treatment options: 1. Preventive Maintenance: This item includes filling potholes, patching, crack sealing and seal coating. 2. Rehabilitation: Performed to correct deficiencies that occur in pavements such as extensive cracking and potholing. This type of maintenance includes mill and overlays. 3. Reconstruction: This item is performed when corrective maintenance is no longer appropriate. City of Chanhassen 2040 Comprehensive Plan142 Studies conducted by a number of agencies indicate that as pavement conditions decrease, the cost for the appropriate improvements significantly increases. A typical graph of a pavement degradation curve taken from the American Public Works Association is shown above. This graph shows that it is more cost effective to have pavement repaired with preventative maintenance than it is to wait until the pavement needs reconstruction. FIGURE 6.14 | Pavement Degradation Curve Bridges Bridges meeting the State of Minnesota definition are inspected according to the National Bridge Inspection Standard and are typically inspected every one to two years depending on their condition. Capital Improvements Capital improvements will be included in the implementation chapter. City of Chanhassen 2040 Comprehensive Plan143 City of Chanhassen 2040 Comprehensive Plan144 Chapter 7Sewer City of Chanhassen 2040 Comprehensive Plan145 7.1 | Executive Summary The City of Chanhassen’s Comprehensive Sanitary Sewer System Plan (plan) is intended to be an update to the city’s previous Comprehensive Sewer Plan dated 2008 and to assist the City of Chanhassen in meeting its short-term and long-term sanitary sewer needs. The plan is also intended to serve as an inventory of the city’s existing sanitary sewer facilities and an updated guide for completing the future sanitary sewer trunk system improvements. The city is divided into eight major sanitary sewer service areas or districts as shown in Figure 3.2 in Appendix A. For the purpose of sanitary sewer planning, these major districts are further divided into sub-districts based on both lift station and gravity sewer service areas as shown in Figure 3.3 in Appendix A. Each sub-district contributes wastewater flow to the sanitary sewer collection system dependent upon a variety of parameters. These parameters include but are not limited to land use, population density, wastewater generation rates, development restrictions, wetlands and dedicated green space. Approximate future trunk facility locations were determined based on the topography of undeveloped areas. An objective to planning the trunk sanitary sewer system is to minimize the number of trunk lift stations, while keeping the maximum depth of gravity sewers to realistic depths. The existing and proposed system layout is also shown on Figure 3.4. The system layout is general in nature and exact pipe alignments and lift station locations will be deter- mined by the actual conditions at the time of final design. It is important that the general overall concept and sizing plan is utilized to assure an economical and adequate future system. A 22-year capital improvement plan (CIP) was developed for the completion of the trunk system. These trunk fa- cilities include all gravity sewer mains for each sub-district, lift stations, and force mains. The CIP includes costs for each trunk improvement project; however, the approximate trunk costs do not include the cost of installing lateral sewers for development. The cost for lateral improvements would be funded directly through assessments to the development or redevelopment. The following table summarizes the proposed 22-year CIP and associated costs: 7 | Sewer City of Chanhassen 2040 Comprehensive Plan146 FIGURE 7-1 | Capital Improvement Plan Summary Improvement Description Extended Cost 2018 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $150,000 Lift Station #18,26 $75,000 Subtotal $425,000 2019 Inflow and Infiltration Abatement $200,000 2010 MUSA Lift Station $1,900,000 Sanitary Sewer Replacement $50,000 Lift Station #16 $50,000 Subtotal $2,200,000 2020 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $250,000 Lift Station #22 $50,000 Subtotal $500,000 2021 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $50,000 Lift Station #2,17 $75,000 Subtotal $325,000 2022 Lower Bluff Creek Trunk Sanitary Sewer $10,800,000 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $250,000 Lift Station #13 $50,000 Subtotal $11,075,000 2023 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $50,000 Lift Station #1,20 $120,000 Subtotal $370,000 2024 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $150,000 Lift Station #7 $50,000 Subtotal $400,000 2025 -2030 2026-2030 Sanitary Sewer I/I Rehabilitation $1,000,000 2026-2030 Sanitary Sewer Reconstruction Program $850,000 Lift Station No. Improvements $455,000 Subtotal $2,305,000 2031 -2035 2031-2035 Sanitary Sewer I/I Rehabilitation $1,000,000 2031-2035 Sanitary Reconstruction Program $650,000 Lift Station No. Improvements $330,000 Subtotal $1,980,000 2036 -2040 2036-2040 Sanitary Sewer I/I Rehabilitation $1,000,000 2036-2040 Sanitary Reconstruction Program $850,000 Lift Station No. Improvements $800,000 Subtotal $2,650,000 Total Capital Improvements Plan Costs $22,445,000 » Costs are for budgeting purposes only, and are subject to change as projects are studied, designed and constructed. » Project Costs include 10% for construction contingency and 25% indirect costs where applicable. » Costs are estimated based on 2017 construction costs. City of Chanhassen 2040 Comprehensive Plan147 7.2 | Introduction Purpose The purpose of this study is to provide the city with an updated plan to serve future development and to identify existing system facilities and deficiencies. Scope The scope of this study includes population and sanitary sewer flow projections for the City of Chanhassen through the year 2040. The potential 2040 service area was defined as areas that can be feasibly served by sanitary sewer in the future and was based on the current Land Use Plan prepared for the city’s Comprehensive Plan. The 2040 ser- vice area for the city is considered to be the full build-out of the current city limits. Based on the 2040 service area, sanitary sewer districts and sub-districts were defined. Existing and future sanitary sewer flow rates were calculated for each sub-districts based on the respective land uses. Projected sanitary sewer flow rates were used to analyze the existing trunk system capacity and size future trunk system facilities. Future trunk improvements were defined with the intention that the trunk system would serve the 2040 service area. An approximate layout of potential trunk system improvements along with an opinion of probable cost is provided. Future improvements were prioritized and incorporated into a Capital Improvement Program (CIP) based on an approximate phasing plan provided by the city staff. Data Available In preparing this report, the following sources of information were utilized: » Existing Sanitary Sewer GIS Information » Sanitary Sewer As-builts » City of Chanhassen Comprehensive Sewer Policy Plan, dated November 2008, prepared by WSB & Associates » City of Chanhassen Infiltration and Inflow Reduction Plan, dated June 12, 2006, prepared by WSB & Associates » County Road 61 Corridor Plan, dated December 2, 2014, prepared by SRF Group in association with Hoisington Koegler Group » 2040 Thrive MSP Water Resources Policy Plan Existing City Sanitary Sewer System Overall Sanitary Sewer Service Area Typically, sanitary sewer systems consist of two elements; collection and treatment. Collection systems include sewer services, trunk sewer pipe, manholes, lift stations and forcemains which collect the sewer flows from private resident, commercial and industrial properties within a city. Treatment systems include the biological or chemical treatment in order to remove targeted contaminants from the wastewater. The City of Chanhassen’s existing sanitary sewer system is a collection system only; the Metropolitan Council Environmental Services (MCES) provides treatment for Chanhassen’s entire sanitary sewer flows. MCES is also re- sponsible for major trunk facilities conveying wastewater across city boundaries to regional treatment facilities. All wastewater flows from the City of Chanhassen enter the MCES interceptor system and is conveyed to the MCES Blue Lake Wastewater Treatment Plant (WWTP) located in the City of Shakopee, just north of Highway 101. City of Chanhassen 2040 Comprehensive Plan148 The sanitary sewer service area is defined as the area from which wastewater flows are collected by the city’s regional system. The existing serviced area within the City of Chanhassen is comprised of approximately 10,600 gross acres which includes the lakes, open park land and road right-of-ways. This service area is shown in Figure 3.2. (Appendix A) Sanitary sewer service districts (districts) were developed within the city boundaries based on gravity service and lift station service areas. The existing serviced area has been developed within several districts, many of which are not fully developed. Gravity Sanitary Sewer The City of Chanhassen gravity sanitary sewer system consists of 6- to 36-inch diameter vitrified clay pipe (VCP), acrylonitrile butadiene styrene (ABS), reinforced concrete pipe (RCP), ductile iron pipe (DIP), and polyvinyl chlo- ride (PVC) plastic sewer pipe. The original sanitary sewer system for the area southwest of Lotus Lake was con- structed in the 1950s and consisted of two lift stations. Following the initial construction, a majority of the system was constructed in the 1970s. The existing gravity sanitary sewer system appears to be in good overall condition; however, limited televising inspections have found root penetrations at joints, cracked pipe, leaking manholes and castings, as well as mineral deposits. In recent years, the City of Chanhassen has been identified as having excessive infiltration and inflow (I/I) by MCES. The city is currently included on the MCES “List of Communities with Observed Excess I/I, June 30, 2006.” The city was also assessed a surcharge by MCES according to the adopted MCES 2007 Surcharge Policy. The City of Chanhassen developed an Infiltration and Inflow Reduction Plan dated June 12, 2006 which identified a number of gravity sanitary sewer improvements to reduce the amount of I/I entering the city’s system. The gravity sanitary sewers are directed to several MCES interceptors described in Section 4 that convey wastewa- ter to the Blue Lake WWTP. The existing gravity sanitary sewer trunk mains (8-inch diameter and larger) and the MCES interceptor are shown on Figure 3.1. (Appendix A) Lift Stations The City of Chanhassen sanitary sewer system consists of 31 lift stations ranging from a small 16 gallons per minute (gpm) grinder station to a large 1,448 gpm lift station. The lift station capacities vary depending on size of service area. The locations of the existing lift stations are shown on Figure 3.1 (Appendix A) and the following table summarizes capacity information for each of the lift stations: City of Chanhassen 2040 Comprehensive Plan149 General Lift Station Information General Sewer Shed Information Lift Station Area Year Constructed Approx. Length of Forcemain Pumping Capacity (gpm) Control Panel Age Pump Age Length of pipe (ft) Approx. Number of Manholes Approx. Number of Services 1 1967 5,486 103 1999 2003 3,610 20 40 2 1967 1,420 353 2005 2005 18,287 100 293 3 1971 1,200 860 2008 2008 33,617 164 413 4 1971 882 560 2008 2008 18,559 96 191 5 1971 1,175 325 2008 2008 22,843 105 271 6 1971/1990 400 198 2008 2002 13,997 97 154 7 1971/2000 1,365 370 1999 2006/ 2015 14,499 68 159 8 1971 425 76 2008 2008 470 3 6 9 1975 1,104 288 2008 2008 7,398 43 85 10 1975 1,726 905 2013 2013 51,313 286 827 11 1975 893 126 2011 2005/ 2006 4,254 19 39 12 1975 959 304 2008 2008/ 2007 9,287 56 106 13 1975 2,336 95 1999 2005/ 2000 6,322 34 73 14 1975 485 101 2008 2005/ 2000 663 5 7 15 1975 1,352 136 2006 2006 6,294 37 53 16 1975 174 64 2010 2010/ 2009 755 7 9 17 1977/1993 2,477 956 1996 1996 26,389 153 412 18 1977/1993 1,360 99 1996 2007 5,802 35 61 19 1982 1,590 89 2007 2007 2,874 17 39 20 1985 1,383 16 1986 2004/ 2014 1,393 6 18 21 1985 571 123 2015 2015 5,937 37 88 22 1985/1990 1,600 202 1987 2008/ 1987 2,556 12 7 23 1988 2,775 73 2016 2016 782 3 1 24 1991 1,917 1,448 2010 2010/ 2009 114,733 632 2,850 25 1991 1,460 143 1993 1993 6,920 45 81 26 1991 1,304 396 1993 1998 18,685 100 246 27 1992 676 382 2006 2006 10,789 75 166 28 1994 591 78 1997 1997 762 7 9 29 1993 696 226 1997 1997 1,116 5 7 30 2004 1,128 264 2004 2004 2,163 16 17 31 2006 757 82 2006 2006 1,481 11 28 FIGURE 7.2 | Existing Lift Station Information City of Chanhassen 2040 Comprehensive Plan150 Existing System Analysis and Deficiencies A SewerCAD computer model was developed in 2006 to verify existing system’s capacity to convey existing sys- tem wastewater flows to the MCES collection system. Existing system as-built information was used to develop the model and determine system capacity. Average day and peak flows were calculated by determining the existing developed area in each district, area of each existing land use, number of existing units and assuming a flow generat- ed for each land use. The model was calibrated by reducing the flow generated for each land use until the total system flow matched sewer flows metered by MCES. The existing system model includes the following parameters: » Existing sewer mains – 10-inch diameter and larger » Existing trunk lift stations » Existing trunk main flows (MCES) Figure 7.3 illustrates the remaining pipe capacity resulting from the 2006 analysis trunk mains. Modeling results in- dicated two sections (of 23 sections) of the 36-inch trunk main parallel to the MCES interceptor flowing east along the north side of Lake Susan near Highway 101 exceeded capacity as shown on Figure 7.3. The model indicated a slight surcharge at the manholes in the two sections where existing flows exceeded capacity, however the capacity of the overall trunk system is adequate. The MCES Lake Ann interceptor exhibited a few sections exceeding capacity; however, MCES is responsible for monitoring flows and determining deficiencies for this main. Figure 7.3 shows all trunk lift stations (with influence lines greater than 10-inches diameter) with the exception of Lift Station No. 7 exhibit adequate capacity. The figure below shows existing lift station pump capacity and existing peak inflow information. FIGURE 7.3 | Existing Trunk Lift Station Analysis Lift Station Area Pumping Capacity (gpm) Existing Peak Flow (gpm) Remaining Capacity (gpm) 1 103 38 65 3 594 544 50 4 560 229 331 6 198 130 68 7 135 145 -10 10 905 609 296 12 100 88 12 24 1,448 725 423 26 396 339 57 City of Chanhassen 2040 Comprehensive Plan151 On-site Disposal Systems There are several areas within the City of Chanhassen that are currently on septic systems. Some of these areas are developed with one or two acre lots that could be developed or subdivided with sanitary sewer service. Figure 3.6 in Appendix A presents the lots which currently utilize septic systems. The areas are primarily located in the districts south of the Highway 212 corridor. The remaining existing septic systems are scattered throughout the remainder of the city in areas with larger lots. There are currently 388 Subsurface Sewage Treatment Systems (SSTS) in the community with 380 serving residential and eight serving commercial/industrial uses. Chapter 19, Article IV of the Chanhassen City Code addresses SSTS. MCES SANITARY SEWER SYSTEM The majority of the wastewater generated from the City of Chanhassen is conveyed to one of two MCES interceptor sewers, identified as the Shorewood Interceptor (7017) and the Lake Ann Interceptor (7138). Shorewood Interceptor The Shorewood Interceptor is a combination forcemain and gravity sewer interceptor, which begins at the MCES L21 Lift Station near Lake Virginia and flows eastward through Shorewood, Excelsior, Greenwood, and Tonka Bay. There are four extensions of the Shorewood Interceptor, which extend southward to the north boundary of Chanhassen (information obtained from the 2006 Comprehensive Sewer Policy Plan). » Shorewood interceptor extension 7017-1 is a 15-inch diameter RCP gravity flow sewer extending northeasterly from the Chanhassen boundary at Washta Bay Road along Pleasant Avenue to the northwest side of Mary Lake in Shorewood to the major interceptor. » Shorewood interceptor extension 7017-2 is a 9-inch diameter PVC forcemain that extends from the Chanhassen boundary at Chaska Road to the west shore of Galpin Lake in Shorewood to the major interceptor. » Shorewood interceptor extension 7017-3 is a combined gravity and forcemain facility that flows north from the Chanhassen boundary along Christmas Lake Road through a 15-inch diameter RCP to a lift station, then through a 9-inch diameter PVC pipe and an 8-inch diameter DIP to the major interceptor. » Shorewood interceptor extension 7017-4 is a 12-inch diameter RCP gravity flow sewer extends between Christmas Lake and Silver Lake from the Chanhassen boundary to the Shorewood Interceptor. Wastewater generated from the northern area, the area on the north side of Lake Lucy, and the area around the north and west sides of the Lake Minnewashta area flow north to the Shorewood Interceptor and is ultimately treated at the Blue Lake Wastewater Treatment Facility in Shakopee. Lake Ann Interceptor The Lake Ann Interceptor (7138) is an MCES sewer that serves Chanhassen in the Bluff Creek, Rice Marsh Lake, Lake Susan, Lake Ann, Lotus Lake, Lake Lucy and Lake Riley vicinity. The Lake Ann Interceptor sewer system was constructed in three phases and was completed in 1988. The interceptor extends southeast, beginning at Trunk Highway 41 near the north City limits and approximately 4.5 miles to the Red Rock Interceptor at the Chanhassen/ Eden Prairie border. The city’s Lake Ann trunk sewer is parallel to the MCES trunk sewer between the Red Rock Interceptor and Highway 5. The Red Rock Interceptor starts at the termination of the Lake Ann Interceptor and continues southeasterly through Eden Prairie where it discharges into the Purgatory Creek Interceptor and eventually to the Blue Lake Wastewater Treatment Facility in Shakopee. City of Chanhassen 2040 Comprehensive Plan152 During the 2007 SewerCAD model analysis for the existing City of Chanhassen sanitary sewer system and as discussed previously, the MCES Lake Ann interceptor exhibited a few sections exceeding capacity; however, MCES is responsible for monitoring flows and determining deficiencies for this main. 7.3 | Land Use Land Use Breakdown The current land use plan for the City of Chanhassen is shown in Chapter 2, Figure 2-9. This plan was developed by the city and separates the planning area into eleven (11) different land use categories. Land use is a critical factor in determining future sanitary sewers alignments and sizes due to the fact that different land uses generate different wastewater flow rates. The following table presents the current city land use breakdown and the associated abbreviations: Land Use Designation Abbreviation Residential – Large Lot RLL Residential –Low Density RLD Residential – Medium Density RMD Residential –High Density RHD Commercial C Office O Office/Industrial O/I Parks/Open Space P/OS Public/Semi-Public P/SP Mixed M Agricultural A FIGURE 7.4 | Land Use Summary Existing Developed and Developable Areas The area within the City of Chanhassen’s planning area is approximately 21 square miles or 13,700 acres. The exist- ing area within Chanhassen with sewer service is approximately 16.6 square miles or 10,600 gross acres. For sewer planning purposes, land that is not served by sanitary sewer is considered not developed and not all of this acreage is considered developable. Undevelopable land use categories include open space and water. Existing developed and undevelopable areas were subtracted to obtain developable acreage. Developable acres are shown on Figure 5.1, (Appendix A) along with the existing sewer service area. This is identified as “Gross” Devel- opable Acreage because it includes roads and common or public/park areas potentially included in developments. Roads, common areas and parks typically consume 25% to 30% of the gross area within a development. GROWTH PROJECTIONS Projected Residential Growth Historical growth data for the study area from the Minnesota State Demographer’s office is included on Figure 7.5. The City of Chanhassen exhibited stable growth between 1900 and 1960; however, it grew exponentially between 1960 and 2000 with approximately 73% growth between 1990 and 2000. City of Chanhassen 2040 Comprehensive Plan153 FIGURE 7.5 | Historical Census Data Figure 7.6 below shows the assumed residential population growth and sewered population through the year 2040 from the 2040 Thrive MSP Water Resources Policy Plan. Based on the data provided below, there would be an approximately 16% to 19% growth in population every 10 years. It is assumed that as development occurs, sanitary sewer service will be extended to the new development. Sanitary sewer service will also be extended to current large lot developments based on need such as failing septic systems. Sanitary sewer service would only be extended to new developments and existing large lot developments that have been incorporated into the MUSA area. Year Population Total Households Employees 1970 4,839 1,349 900 1980 6,351 2,075 2,102 1990 11,732 4,016 6,105 2000 20,321 6,914 9,350 2010 22,952 8,679 10,905 2020 2030 2040 Total Population 26,700 31,700 37,100 Sewered Population 24,300 29,300 34,700 Unsewered Population 2,400 2,400 2,400 Total Households 10,000 11,900 14,000 Sewered Households 9,200 11,100 13,300 Unsewered Households 800 800 700 Total Employees 15,600 17,000 18,400 Sewered Employees 15,400 16,800 18,200 Unsewered Employees 200 200 200 FIGURE 7.6 | 2040 Thrive MSP Water Resources Policy Plan Population Projections *Note: In TAZ 386 there are 18 properties where the homes empty into a holding tank at the back of the home, which then connect to a public sanitary sewer within West 96th Street to Lift Station 20. These properties are included in the sewered household category. City of Chanhassen 2040 Comprehensive Plan154 Projected Non-Residential Growth Non-residential customers are located in the following land use areas: Commercial, Office, Office/Industrial, Industrial, Mixed Use, Parks/Open Land and Public/Semi Public. Tracking the exact acreage developed each year for the preceding land uses is difficult; however, it is possible to track the number of total non-residential connections based on water use records. Typically, the above land use categories are grouped into two water use types, commercial and industrial. Since it is not possible to relate land use categories to water use records, the previously listed land use categories have been grouped together as non-residential for determining growth rates. To project future non-residential growth, some trends over the past few years can be analyzed. Figure 7.7 illustrates the growth in non-residential water connections over the past ten years, and the percentage of non-residential connections relative to residential connections for the City of Chanhassen water system. Year Non- residential connections Non- residential annual growth Residential connections Residential annual growth Percent non- residential connections 2007 251 6,545 3.69% 2008 345 37.45% 6,931 5.90% 4.74% 2009 342 -0.87%7,019 1.27% 4.65% 2010 431 26.02% 7,145 1.80% 5.69% 2011 426 -1.16%7,229 1.18% 5.56% 2012 382 -10.33%7,310 1.12% 4.97% 2013 341 -10.73%7,530 3.01% 4.33% 2014 292 -14.37%7,612 1.09% 3.69% 2015 295 1.03% 7,780 2.21% 3.65% 2016 296 0.34% 7,904 1.59% 3.61% Average 4.46% Year Population Residential Connections Non-Residential Connections 2016 24,951 7,904 296 2020 26,700 9,200 373 2030 31,700 11,100 450 2040 37,100 13,300 539 FIGURE 7.7 | Non-Residential Historical Growth FIGURE 7.8 | Non-Residential Growth Projections Historically there is a correlation in the ratio of non-residential to residential connections. The ratio has averaged 4.05% over the last five years. Based on a ratio of non-residential to residential connections of 4.05%, Fig- ure 7.8 was developed to project future non-residential connection growth in a similar fashion to Figure 7.6 projecting future population. Existing Wastewater Flows Future sanitary sewer flows, in conjunction with available slope, govern the capacity of sanitary sewers. To deter- mine future sanitary flows, existing water demand and MCES recommendations were considered. MCES typically estimates 274 gpd/connection or 75 gallons per capita per day (gpcd) for residential estimates and 800 gallons per acre per day (gpad) for non-residential developments. Total existing city wastewater flows are not measured for individual users; the total flows are only measured by MCES at the city flow meter for the entire City of Chanhassen. Wastewater flows are therefore not categorized by land use type. However, the City of Chanhassen does collect water demand data. Water demand data by customer type for 2010-2016 is shown below in Figure 7.9. The actual annual wastewater generated is also shown in the fol- lowing table, along with the percent of wastewater generated per actual gallons of water used. From the information provided, the wastewater generated during the years 2010 to 2016 ranged from 58% to 83% of the actual water usage. City of Chanhassen 2040 Comprehensive Plan155 FIGURE 7.9 | Water Demand By Customer Category FIGURE 7.10 | Historic Wastewater to Water Consumption Percentages Customer Category 2010 2011 2012 2013 2014 2015 2016 Residential (1,000 Gal)689,522 738,107 863,567 764,214 672,717 667,903 630,530 Commercial (1,000 Gal)465,669 180,144 176,868 161,122 147,411 138,082 112,660 Industrial (1,000 Gal)97,806 120,152 107,630 94,111 86,864 84,117 62,132 Other1 (1,000 Gal)21,456 19,744 29,005 22,948 22,257 20,890 107,052 Total (1,000 Gal)971,453 1,058,147 1,117,070 1,042,395 929,249 910,992 912,374 Wastewater Flow (1,000 Gal)2 757,900 784,200 652,800 725,600 721,800 620,200 753,500 % of Wastewater to Water Usage 78% 74% 58% 70% 78% 68% 83% Average Water Demand (MGD)2.7 2.9 3.1 2.9 2.5 2.5 2.6 Average Wastewater Flow (MGD) 2.1 2.1 1.8 2.0 2.0 1.7 2.1 » The other water usage category includes institutions, schools, and parks. » The total annual wastewater flow was provided by MCES and based on the flows that the City of Chanhassen was billed for. The industry standard design for water consumption is 100 gallons per person per day and for sewer it’s 75 gallons per person per day which accounts for losses occurring largely due to lawn watering; therefore for communities that do not have excessive I/I the average wastewater flow is approximately 75% of the water demand. Figure 7.10 sum- marizes the wastewater to water consumption since 2000. As the City of Chanhassen continues to implement the I/I reduction plan, it is expected that the percent of wastewater flow to water demand will decrease and will become consistent with other communities that currently do not have excessive I/I. Year Wastewater to Water Consumption 2000 94% 2001 102% 2002 120% 2003 89% 2004 108% 2005 100% 2006 66% 2007 83% 2008 74% 2009 65% 2010 78% 2011 74% 2012 55% 2013 70% 2014 78% 2015 68% 2016 83% City of Chanhassen 2040 Comprehensive Plan156 FIGURE 7.11 | Wastewater Flow Calculation Assumptions FIGURE 7.12 | Historical Residential Wastewater Flow Rates Land Use Abbreviation Land Use Description Units/Acre Gallons/Acre/Day RLL Residential – Large Lot 1 274 RLD Residential – Low Density 3 822 RMD Residential – Medium Density 7 1,918 RHD Residential – High Density 12 3,288 C Commercial -800 O Office -800 O/I Office/Industrial -800 P/OP Parks/Open Space -100 P/SP Public/Semi-Public -800 M Mixed -800 Residential Flow Rates To determine the residential flow generation rates in gallons per gross acre several factors were reviewed and several assumptions made. As discussed previously, MCES typically uses 75 gpcd. Based on the residential water use from Figure 7.9 and the actual percentages of wastewater to water usage, Figure 7.12 indicates that the average Chanhassen residential wastewater flow is below 75 gpcd. Year Residential Connections Estimated Population Served1 Persons per Connection Residential Water Use (gal/day) Actual Percent of Wastewater to Water Usage Estimated Residential Wastewater Flow (gal/day) Average Residential Wastewater Flow per Connection (gal/day) Average Residential Wastewater Flow per Person (gal/day) 2010 7,145 22,157 3.10 1,889,101 78%1,473,499 206.2 66.5 2011 7,229 22,384 3.10 2,022,211 74%1,496,436 207.0 66.9 2012 7,310 22,689 3.10 2,365,937 55%1,301,265 178.0 57.4 2013 7,530 23,159 3.08 2,093,737 70%1,465,616 194.6 63.3 2014 7,612 23,593 3.10 1,843,060 78%1,437,587 188.9 60.9 2015 7,780 23,860 3.07 1,829,871 68% 1,244,312 159.9 52.2 2016 7,904 24,156 3.06 1,727,479 83%1,433,808 181.4 59.4 Average 188.0 60.9 » Estimated population served per City of Chanhassen Planning Department. Assumes unsewered population is approximately 795. Non-Residential Flow Rates Non-residential wastewater generators consist of Commercial, Office, Office/Industrial, Industrial, Mixed Use and Public/Semi Public land uses. As discussed previously, it is not possible to separate land use areas based on water use records. Therefore, existing wastewater flows were developed based on the water usage records and allocating the remaining water demand flows to each non-residential acre. Water demand was used because it can be sepa- rated by non-residential and residential use based on provided data. Verifying water usage records and applying the MCES assumption for non-residential users of 800 gpd is a reasonable assumptions for overall planning. It is possible a large user could develop within the system; therefore, some laterals may need to be increased in size at the time of construction. The cost to install larger laterals has not been accounted for as a part of this plan. These developments would need to be reviewed on a case-by-case basis as the development occurs. This table presents a number of assumptions utilized during the development of this report to calculate existing wastewater flows by actual developed units and future flows by number of units per acre and/or gallons per day per acre: City of Chanhassen 2040 Comprehensive Plan157 FIGURE 7.13 | Historic Wastewater to Water Consumption Percentages Peak Flow Factors The sanitary sewer collection system must be capable of handling not only average flows, but also the anticipated peak flows. These peak flows can be expressed as a variable ratio applied to average flow rates. This variable ratio, called the peak flow factor, has been found to decrease as the average flow increases. The peak flow factors applied in this study were based on typical MCES supplied peaking factors. They are generally considered conservative, and are widely used for planning in municipalities throughout the twin cities metropolitan area. Appendix B lists the peaking factors used for this study. Infiltration and Inflow (I/I) Infiltration is clear water that enters the sanitary sewer system through defects in the sewer pipes, joints, manholes, and service laterals. Water that enters the sewer system from cross connections with storm sewer, sump pumps, roof drains, or manhole covers is considered inflow. The quantity of I/I entering a wastewater collection system can be estimated utilizing wastewater pumping records, daily rainfall data and water usage characteristics. Water from inflow and infiltration can consume available capacity in the wastewater collection system and increase the hydraulic load on the treatment facility. In extreme cases, the added hydraulic load can cause bypasses or overflows of raw wastewater. This extra hydraulic load also necessitates larger capacity collection and treatment components, which results in increased capital, operation and maintenance, and replacement costs. As sewer system age and deteriorate, I/I can become an increasing problem. Therefore, it is important that I/I be reduced whenever it is cost effective to do so. The MCES has established wastewater flow goals for each community discharging wastewater into the Metropoli- tan Disposal System (MDS) based on average day flows and allowable peaking factors. These enforced wastewater flow goals are aimed at reducing excessive I/I within the city’s sanitary sewer system and also the MCES interceptor system. In February 2006, MCES adopted an I/I Surcharge Program which requires communities within the MCES service area to reduce or minimize excessive I/I over a period of five years. In the case that communities exceed the wastewater flow goals set by MCES during the five-year surcharge period, the community will be assessed a sur- charge for flows above the goal. The City of Chanhassen was identified by the MCES as having excessive I/I during the development of the I/I Sur- charge Program. As part of the MCES surcharge program, the City of Chanhassen has the ability to recover or avoid the imposed surcharges. Surcharges can be avoided by taking official steps to reduce excess I/I through planned city (or private) fund expenditures. In addition, costs spent on repair or reconstruction of the MCES interceptor may be directly credited to the City of Chanhassen’s surcharge amount. The City of Chanhassen’s goal is to abate I/I in a measurable manner: reducing wastewater flows such that they are 75% or less than the water consumption. Figure 7.13 shows the percentage of wastewater to water consumption for the last 17 years. From 2000 to 2006, six of the seven years monitored exceeded 75%. Over the next five years two years exceeded the threshold. From 2012 to 2016 two years exceeded the 75% threshold. Year Wastewater to Water Consumption Year Wastewater to Water Consumption Year Wastewater to Water Consumption 2000 94%2007 83%2012 55% 2001 102%2008 74%2013 70% 2002 120%2009 65%2014 78% 2003 89%2010 78%2015 68% 2004 108%2011 74%2016 83% 2005 100%Average 75%Average 71% 2006 66% Average 95% City of Chanhassen 2040 Comprehensive Plan158 Potential sources of I/I within the city include: sanitary sewer manholes, laterals and services; and sump pump and draintile connections to sanitary sewer services. Every year, a portion of public sanitary sewer infrastructure- man- holes and laterals- is inspected and the necessary repairs are made. Section 19-44 of the City Code is used to enforce the city’s I/I policies with regards to private sewer infrastructure and can be found in Appendix C. Public Sanitary Sewer and Manholes Annually, the city reviews the condition of a portion of the public infrastructure, televising the sewer pipe and inspecting manholes. The sections chosen include pipe and manholes within the next year’s street improvement project and areas that have been identified as high potential for I/I, such as pipe located next to a surface water fea- ture. Issues identified are repaired or replaced. Examples of repair work includes installing I/I barriers and gasketed manhole covers, chemical grout and short lining. Typically, the city reconstructs approximately one mile of streets in even-numbered years based on the condition of the street, water main and sanitary sewer. In odd-numbered years, the city rehabilitates between three and six miles of streets. It is the city’s policy to install drain tile throughout street reconstruction projects and in select areas in rehabilitation projects. Drain tile desaturates the street subgrade, reducing the groundwater available for infiltration into the sanitary sewer system. The drain tile also provides homeowners an option to connect their sump pump dis- charge which reduces inflow into the sanitary sewer system. Private Sewer Services Public sewer televising includes a visual of the service wye. As of 2014, the city offers residents within street project areas the opportunity to have their sanitary sewer service from the home to the public sewer televised. Participation is voluntary and is intended to identify services that are a source of I/I or are in need of other repairs. This service will continue to be offered to residents within street improvement project areas. Private Sump Pump and Drain Tile Illicit Connections According to information provided by the Metropolitan Council, prior to 1969 the Plumbing Code allowed sump pumps to discharge into the sanitary sewer and perimeter drain tile was permitted to be directly connected to the sanitary sewer service. According to the 2016 records, there were 733 buildings within the city that were built in or before 1969; the remaining 8,097 homes within Chanhassen were built after 1969. Of the homes built before 1969, 62% of the service wyes and 1% of the service laterals have been televised. Figure 7.1 in Appendix A shows the properties which contain buildings constructed in or before 1969. In an effort to reduce the number of illicit discharges (inflow) to the sanitary system, the city inspected 924 homes as part of the Sump Pump Inspection Program in 1996: 84% of homes were in compliance, meaning their sump pump was not connected to the sanitary sewer. Throughout the next seven years, the city reinspected the non-compliant properties to ensure that the sump pump discharge was disconnected from the sanitary sewer. More detailed information including specific projects and associated costs are included in the prepared I/I reduction plan. Total annual costs for I/I reduction efforts are included in the overall sanitary sewer Capital Improvements Plan prepared with this comprehensive study. A copy of the detailed I/I Capital Improvements Plan from the I/I reduction plan is included in Appendix C. The clearwater flow from residential uses is estimated using the data presented in Figure 7.12. Design assumptions for sewer discharge is 75 gallons per person per day and 100 gallons per person per day for water consumption, or sewer discharge is 75% of water consumption. Using this rationale wastewater flow in excess of 75% is an estima- tion of clearwater flow and is summarized in Figure 7.14. City of Chanhassen 2040 Comprehensive Plan159 Year Actual Percent of Wastewater to Water Usage Amount Above 75% Threshold Estimated Residential Wastewater Flow (gal/day) Estimated Clearwater Flow (gal/day) 2010 78%3%1,473,499 44,205 2011 74%-1,496,436 - 2012 55%-1,301,265 - 2013 70%-1,465,616 - 2014 78%3%1,437,587 43,128 2015 68%-1,244,312 - 2016 83%8%1,433,808 114,705 FIGURE 7.14 | Historical Residential Wastewater Flow Rates 7.4 | Sanitary Sewer Districts To develop the future sanitary sewer trunk system, the ultimate potential service area was divided into major service areas or districts and then dividing those major service districts into sub-districts. Generally the selection of these areas is governed by existing topography and/or other existing features such as roadways. The ultimate potential service area for Chanhassen is divided into eight major sanitary sewer districts: Minnewashta (MW), Bluff Creek (BC), Lake Ann (LA), Lake Lucy (LC), North (NO), Lotus Lake (LL), Lake Riley (LR), and Lower Bluff Creek (LB). Figures 7.15 and Figures 3.2 and 3.3 in Appendix A show the major sanitary sewer districts and the sub-districts. The existing and projected flows for each sanitary sewer district is presented in Appendix B. The existing flows noted in Appendix B are higher than the sewer flow rates provided by the Metropolitan Council. The difference between calculated and realized sewer flows can be attributed to the fact that properties within each land type can contain undevelopable acreage such as wetland, storm water feature or steep slopes which cannot be readily deleted from the property area. Minnewashta District (MW) The Minnewashta (MW) Sewer District includes the area around the south, west, and north sides of Lake Minnewashta. There are approximately 1,200 acres of developed land consisting of low density residential and commercial uses, including approximately 40 acres of single family residential land within the City of Victoria. The district also includes park/open space and significant acreage of public/semi-public land within the Minnesota Landscape Arboretum property. Approximately 20 acres of low density residential developable land remains within the MW Sewer District. The MW Sewer District is subdivided into seven sub-districts. The flows from the MW district are collected by several sewer lines ranging in size from 8-inch to 10-inch pipe. There are six lift stations that service the MW Sewer District as summarized in Figure 7.16. City of Chanhassen 2040 Comprehensive Plan160 FIGURE 7.15 | Sanitary Sewer Districts City of Chanhassen 2040 Comprehensive Plan161 FIGURE 7.16 | Summary of Lift Stations within the Minnewashta Subdistricts Subdistrict Serviced by Discharges to MW 1 Lift Station 3 MCES Shorewood Interceptor Sewer (7017) MW 2 Lift Station 28 MW 3 MW 3 Lift Station 7 MW 1 MW 4 Lift Station 6 MW 3 MW 5 n/a*n/a MW 6 Lift Station 8 MW 7 MW 7 Lift Station 4 MCES Shorewood Interceptor Sewer (7017) Bluff Creek District (BC) The Bluff Creek (BC) Sewer District includes the area from the east side of Lake Minnewashta and extends southeasterly along the Chanhassen/Chaska border to the Highway 212 corridor. There are approximately 1,250 acres of developed land and 400 acres of developable land within the BC Sewer District. The BC District is partially developed with a combination of low and medium density residential, large lot residential, parks/open space, public/semi-public and office/industrial properties. The BC Sewer District is subdivided into 11 sub-districts. The wastewater generated is collected by gravity sewers ranging from 8-inches to 21-inches diameter. There are three lift stations within the BC Sewer District: Lift Stations 19, 24 and 26. Lift Station No. 19 serves the BC-2 sub-district and Lift Station No. 26 serves the BC-3 sub-district. All of the wastewater from the BC sub-districts flows to Lift Station 24, where it is then pumped north to an 18-inch trunk sewer in the Lake Ann Sewer District Lake Ann District (LA) The Lake Ann District (LA) Sewer District includes the area that runs through the central part of Chanhassen. There are approximately 1,656 acres of existing developed land and 295 acres of developable land within the LA Sewer District. The LA District is sub-divided into 11 sub-districts. The majority of the sub-districts have been developed but there will still be need for lateral sewer lines as LA-4, -5 and -6 are sub-districts that are not fully developed. The LA District consists of low, medium and high density residential properties as well as large lots, park/open space, public/semi-public and office industrial areas. The wastewater generated in the LA District is collected by gravity sewers ranging from 8-inches to 36 inches in diameter. There are five existing lift stations within the LA Sewer District: Lift Stations 23, 27, 29, 30 and 31. Lift Station No 23 is a small station within the LA-4 sub-district that serves Lake Ann Park and discharges to Lake Susan Sub District 11. Lift Station No. 27 serves the LA-7 sub-district and discharges to LA-6. Lift Station No. 29 was constructed to serve approximately nine large lots in the southern part of LA-3 sub-district; however, its use has been very minimal, as it only services one home at this time. Lift Station 30 serves the LA-9 sub-district and dis- charges to LA-8. Lift Station 31 serves approximately 28 single family lots in the southern part of LA-3 sub-district. The MCES Lake Ann Interceptor runs southeast through the center of the LA Sewer District. The city’s major trunk line, which ranges in size from 21-inches in diameter to 36-inches in diameter, parallels the MCES Lake Ann Inter- ceptor from State Highway 5 to near Market Boulevard, where it discharges into the Lake Ann Interceptor. *There is currently no collection system that serves sub-district MW-5, which contains the Minnesota Landscape Arboretum research fields and natural areas. City of Chanhassen 2040 Comprehensive Plan162 Lake Lucy District (LC) The Lake Lucy (LC) Sanitary Sewer District is located around the north side of Lake Lucy. The LC District is not subdivided in to sub-districts due to its size. There is approximately 91 acres of existing developed land within the LC District, which is all low density residential. A 10 acre parcel in the southwest corner of the LC District may further subdivide in the future. Sanitary sewers 8-inches in diameter collect the wastewater and direct it to Lift Station No. 25. Lift Station No. 25 is the only lift station within the LC District, which collects the entirety of wastewater generated and pumps the wastewater to the North District North District (NO) The North District (NO) is located along the north border of the city and extends east from the Minnewashta District to the eastern border of the city. The NO District also includes the area along the northeast side of Lotus Lake and is fully developed. There is approximately 725 acres of existing developed land within the NO Sewer District. The existing de- velopment within the NO District consists of low density residential, park/open space and public/semi-public uses. This district also includes approximately 17 acres of low density residential within the City of Shorewood. The only properties that may be developed in the future are low density residential lots that lie within sub-districts NO-7 and NO-8. The NO District is subdivided into 12 sub-districts. The wastewater generated is collected by gravity sewers ranging in size from 8-inches to 15-inches in diameter. There are six lift stations within the NO District and include Lift Stations 5, 13, 14, 15, 16 and 21. Lotus Lake District (LL) The Lotus Lake District (LL) is located along the western and southern sides of Lotus Lake and is divided into 10 sub-districts. Most of the area within the LL District is developed and is composed of low and high density residential, parks/open space, public/semi-public, office/industrial and commercial properties. There is approximately 925 acres of developed land within the LL Sewer District. Sub-district LL-3 has approximately eight acres of developable low density residential land. LL-7 has one 1.2 acre commercial property that is possible for redevelopment. The wastewater generated is collected by gravity sewers ranging in size from 8-inches to 21-inches in diameter. There are seven lift stations within the LL District and include Lift Stations 1, 2, 9, 10, 11, 12 and 22. Lake Riley District (LR) The Lake Riley District (LR) is located around the north, west and south sides of Lake Riley. There are approximately 485 acres of developed land and 40 acres of developable land within the LR Sewer District. The potential future devel- opment within the LR District is around the US Highway 212 corridor and Great Plains Boulevard. The developed ar- eas consist of low and high density residential, large lots, park/open space and mixed use properties. Sub-districts LR-3 and LR-4 have areas of potential low and medium density residential as well as mixed use developable properties. The LR District is subdivided into five sub-districts. The wastewater is collected by gravity sewers ranging in size from 8-inches to 36-inches in diameter. There are two lift stations within the LR District and include Lift Station 17 and 18. Lower Bluff Creek District (LB) The LB District is located south of Lyman Boulevard between Powers Boulevard and Great Plains Boulevard, and between Pioneer Trail and the southern city limits. This area within the district is partially developed with very little city sewer service. There is a strong possibility for redevelopment, namely along the Highway 212 corridor, as well as the Bluff Creek Golf Course. There are approximately 610 acres of developed land and 1,000 acres of develop- able land within the LB Sewer District. City of Chanhassen 2040 Comprehensive Plan163 The LB District is subdivided into five sub-districts. An 8-inch sanitary extends along 96th Street to Lift Station No. 20 and serves the existing developed lots within LB - 4. Lift Station No. 20 pumps wastewater through a forcemain that runs north along Great Plains Boulevard that discharges to the Lake Riley District. There is also an existing 15-inch and 18-inch trunk sewer line that was constructed along Pioneer Trail and Powers Boulevard; however, this existing trunk sewer does not serve any development at this time. Development of the land within this sewer district and future densities is contingent upon the installation of a lift station and forcemain to bring the sewage to the 21- inch sewer main at Great Plains Boulevard and Lyman Boulevard. The lots within sub-district LB-2 are served by an existing 8-inch diameter sewer that discharges to the Eden Prairie sewer system. Sub-district LB-1 is proposed to have low, large lot and high density residential and office, parks/open space and office industrial properties. The area encompassed in sub-district LB-3 is currently large lot development with area for future residential low density development. Sub-district LB-5 is primarily undeveloped. There are large lots located on Homestead Lane and Flintlock Trail but there is no sewer service. Eight-inch sanitary sewer would be required to convey the flows from these existing lots and potentially from the proposed lift station in LB-4. The northern portion of LB-5 is proposed for low density and large lot residential, office and parks/open space. 7.5 | Future Sanitary Sewer System Wastewater Flow Projections Wastewater flow projections were generated for each sanitary sewer district and corresponding sub-districts based on the gross developable acreage available, anticipated land uses, and wastewater flow generation rates. The waste- water flow generation rates for the various land uses found in Section 7 of this report were used to project the future wastewater flows for the service area. The total district existing average and peak flows and also the ultimate 2040 average and peak flows were calculated using the actual development for existing flows and the projected land use for ultimate flows. Estimated peak hour flows are not totaled as the peaking factor is dependent upon the average day flow rate. Summing the projected peak hour flow rates would produce a flow rate higher than the peak hour flow rate for the entire city; therefore, the peak hour flows are calculated by multiplying the total average flows by the MCES peaking factor. Table 9.1 below pres- ents the existing and projected 2040 flows for each sanitary sewer district. FIGURE 7.17 | 2040 Wastewater Flows Per Sewer District Sanitary Sewer District Existing Average Day Flow (MGD) Existing Peak Hour Flow (MGD) 2040 Average Day Projected Flow (MGD) 2040 Peak Hour Projected Flow (MGD) Minnewashta (MW)0.150 0.589 0.310 1.126 Bluff Creek (BC)0.718 2.370 1.017 3.153 Lake Ann (LA)0.681 2.25 1.114 3.45 Lake Lucy (LC)0.019 0.074 0.027 0.106 North (NO)0.316 1.137 0.363 1.308 Lotus Lake (LL)0.595 2.02 0.642 2.18 Lake Riley (LR)0.222 0.843 0.383 1.377 Lower Bluff Creek (LB)0.015 0.061 1.192 3.696 Total System 2.716 7.333 5.051 12.122 » The sum of the existing peak hour flow does not equal the sum of the peak discharges from each district since the peaking factor decreases as the average flow increases. » Peaking factors were taken from MCES factors included in Appendix B. City of Chanhassen 2040 Comprehensive Plan164 Future Trunk Sanitary Sewer System Analysis The 2007 SewerCAD model developed for the analysis of the existing sanitary system flows was utilized to determine the ability of the existing trunk sanitary system to convey future wastewater flows. Future trunk mains and lift stations will be extended to accommodate future development, which in turn will increase the flows conveyed to the existing trunk system. The trunk sewer system has not been extended since 2007, therefore an updated analyses was not done. Proposed flows were entered into the model and results indicated a reduction in remaining capacity throughout the system, primarily in the Lower Bluff Creek District. Figure 7.3 presents the remaining sewer capacity taking into account proposed future flows. The two sections of the 36-inch trunk main parallel to the MCES interceptor flowing east along the north side of Lake Susan near Highway 101 that exceeded capacity in the existing flow model re- mained the only two sections exceeding capacity in the future system model. Similar to the existing system model, the MCES interceptor exhibited a few sections exceeding capacity; however, MCES is responsible for monitoring flows and determining deficiencies for this main. The City of Victoria future flows conveyed through the MCES interceptor were not included in the model to analyze future capacities in the MCES Lake Ann interceptor. All existing trunk lift stations with the exception of Lift Station Nos. 7 exhibit adequate pumping capacity to serve future development. Figure 7.18 below shows existing lift station pump capacity and existing peak inflow. Lift Station Area Existing Pumping Capacity (gpm) Existing Peak Hour Inflow (gpm) Estimated Future Peak Hour Inflow (gpm) Remaining Pumping Capacity (gpm) 4 560 229 21 310 5 325 69 44 212 7 135 145 4 -14 10 905 609 19 227 17 956 77 425 454 18 99 20 371 292 19 89 20 23 46 24 1,448 725 407 316 25 143 22 22 99 26 396 339 55 2 30 264 30 149 85 FIGURE 7.18 | Future Trunk Lift Station Analysis Lift stations 17, 18, 19 and 30 may need to be upgraded if existing large lot residential properties in subdistricts LR-1 (will flow to LS 17, then LS 19), BC-10 and LA-9 (respectively) are rezoned to low or medium density and serviced by municipal sanitary sewer. A feasibility report would need to be completed to determine the sewer impacts to the existing lift stations. Typically if development impacts from up-zoning are identified, upgrades to existing infrastructure are paid for by the developer or land owner(s). Future Trunk Sanitary Sewer System Minnewashta District (MW) Additional trunk sanitary sewer main improvements will not be necessary to serve the identified future development within the Minnewashta Sewer District. The properties remaining for development are located near trunk and lateral facilities and remaining capacity within the existing facilities is sufficient for estimated peak flows at full build-out. The 2030 Comprehensive Plan addressed the possibility of serving the northeast portion of Victoria through the Minnewashta District. Subsequently, the City of Victoria further examined this service connection and opted to service this area via a future lift station and force main that connect to the Met Council interceptor. City of Chanhassen 2040 Comprehensive Plan165 Lift Station No. 7 may need to be increased in capacity in the future. Currently, Lift Station No. 28 has a capacity of 100 gpm, with an estimated 25 gpm of existing peak flow. Both of these lift stations would need to have the incapac- ity increased if undeveloped property in Victoria to the west of these lift stations where to development and sanitary sewer service connected to the City of Chanhassen sewer system. The estimated future peak flow from the Victoria development area totals 160 gpm (0.2302 MGD). Bluff Creek District (BC) Improvements to the existing lateral and trunk sanitary sewer system will be required to provide service to currently undeveloped properties as well as existing properties that do not have city service. Several of the sub-districts will require improvements to service the developable areas. Sub-district BC-1: Requires an 8-inch trunk line to service a public/semi-public piece of land with the addition of a lift station to pump the wastewater to BC-4. Sub-district BC-2: Contains a nine acre parcel that can be redeveloped into low density residential with the future installation of an eight inch lateral. Sub-district BC-3: This area is fully developed, however several large lots in the Timberwood development are within this district and on a septic system. Future installation of eight inch lateral sanitary sewer will service these properties. Sub-district BC-4: Potential development of low density residential and public/semi-public land with the future installation of an eight inch lateral. Sub-district BC-5: Fully developed and will not require additional sewer installation. Sub-district BC-6: An 11 acre parcel was redeveloped to residential low density in 2017. The extension of an eight inch lateral from the existing stub within the southern portion of Fawn Hill Road served this parcel. Sub-district BC-7: This area is fully developed. However, several large lots in the Timberwood development are within this district and on a septic system. Future installation of eight inch lateral sanitary sewer will service these properties. Sub-district BC-8: There is one undeveloped office industrial property within sub-district BC-8 that will require an 8-inch sanitary sewer line to tie into Chaska’s system or a new lift station to convey flow to Lift Station No. 24 Sub-district BC-9: Future installation of eight inch lateral sanitary sewer will service the properties on Sunridge Court, Audubon Road and Sunset Trail that are currently serviced by septic systems. The vacant land southwest of Lyman Boulevard and Powers Boulevard is guided for medium and high density residential, office and dual guided for commercial as part of the Avienda development pending the extension of eight or ten inch sanitary sewer that flows to Lift Station No. 24. Sub-district BC-10: This area is fully developed as large lot residential. All properties are currently on septic systems. Future improve- ments include installation of eight inch lateral sanitary sewer and a lift station that connects to the BC-2 system. City of Chanhassen 2040 Comprehensive Plan166 Lake Ann (LA) Sub-districts LA-1, LA-2, LA-7, LA-8, LA-10 and LA-11 have developed to their full potential and are sufficiently serviced by the existing sewer systems. Subdistrict LA-3. The 19 acre property east of Audubon Road and south of Alisa Lane can be redeveloped into low density residential and serviced by the extension of eight inch lateral sanitary sewer that connects to the system within Alisa Lane and/or Stonefield Lane. Sub-district LA-4 also will require an 8-inch line to be extended from Coulter Boulevard to the north to service the future office-industrial property located west of McGlynn Drive. Sub-districts LA-5 and LA-6 are proposed to have large areas of development consisting of low, medium, and high density residential properties. Eight-inch sewer laterals will be needed to convey the wastewater from these sub-districts to the existing MCES Interceptor. LA-9 is fully developed, but there are some low density and large lot properties without sewer service. Eight-inch sanitary sewer would be used to connect to the existing sewer system should future connection be asked for by the residents. Lake Lucy (LC) Most of the LC District has sewer service, with the exception of approximately a 10 acre parcel south of Lake Lucy Road at Yosemite Avenue. Eight-inch laterals were stubbed to the property line when the area to the east developed. North District (NO) The only properties that may be developed in the future are low density residential lots and lie within sub-districts NO-7, NO-8 and NO-9. Additional sanitary sewer trunk lines would not be needed to serve these lots as there are sufficient facilities adjacent to the properties. Lotus Lake (LL) The majority of this district is fully developed. The potential future developments within sub-district LL-3 and extension of sanitary sewer to existing lots within LL-10 would be served by the existing trunk sanitary sewer system facilities. Eight inch laterals would be needed to accommodate these properties. Lake Riley (LR) Sub-district LR-1 is fully developed with large lots that will require a future eight-inch sanitary sewer and a lift station to pump the wastewater to sub-district LR-2. The proposed sewer would be needed if the residents requested City service, if the area redevelops, or if septic system failures lead to health or safety issues requiring centralized sanitary sewer service. Sub-districts LR-2 and LR-5 are fully developed are sufficiently serviced by the existing sewer systems. Sub-districts LR-3 and LR-4 are mostly developed and contain future low and medium density residential as well as mixed use properties. To serve future development within these sub-districts, eight inch laterals are proposed. City of Chanhassen 2040 Comprehensive Plan167 Lower Bluff District (LB) Sub-district LB-1 contains low density residential and large lot properties that will be serviced by eight-inch gravity sanitary sewer. In 2014, the “County Road 61 Corridor Plan” by SRF Consulting Group and Hoisington Koegler Group was finalized and included the trunk sanitary layout and estimated costs. The properties west of the Seminary Fen Sci- entific and Natural Area (SNA) will require eight-inch sanitary sewer to convey flow to a future lift station at the west- ern edge of the SNA. The remainder of Sub-District LB-1 will be serviced by eight-inch lateral. A future lift station at Highway 101 and County Road 61 will take all of the flow of LB-1 and pump it north along Highway 101 to LB-5. Sub-district LB-2 is fully developed and is serviced by eight inch sanitary sewer that connects to the City of Eden Prairie. Sub-district LB-3 consists of existing large lot development and future low density residential development. To service this area, eight-inch sanitary sewer and lift station just west of Deerbrook Drive will be required. Flow from this area will be discharged to LB-5. Sub-district LB-4 is fully developed as residential homes connected to the sanitary sewer via a “201 System”. The “201 Program” instituted by the Metropolitan Waste Control Commission (MWCC) based on Section 201 of the Fed- eral Water Pollution Control Act of 1972. The 201 Facilities Planning identified facilities that were required in order to achieve water quality requirements. As a result, Carver County led a project in the 1980s to install sanitary sewer along 96th Street to service the existing properties. The project was to correct the existing problems without providing sani- tary sewer facilities to accommodate additional growth in the area. The project was paid using federal and local funds; also, benefiting property owners were assessed. When this sewer was installed, the services were connected directly to the existing septic tanks instead of abandoning the septic tanks. The old septic tanks are a suspected source on infiltration into the sanitary sewer system. With the proposed sewer layout it may be feasible to abandon Lift Station No. 20 and route the flow west to the new lift station located along Powers Boulevard in LB-5. To reduce the amount of infiltration entering the city’s sanitary sewer system, when the new sewer is constructed, services should be installed directly to the homes and all septic tanks should be abandoned. Sub-district LB-5 is primarily undeveloped. There are large lots located on Homestead Lane and Flintlock Trail but there is no sewer service. To convey the flows from these existing lots and potentially from the proposed lift station in LB-4, eight-inch sanitary sewer would be required. The northern portion of LB-5 is proposed for low and medium density residential and office properties. These properties will require 8-inch trunk mains to carry the wastewater flow. A portion of LB-5 south of Highway 212 and east of Powers Boulevard may be rezoned from low density residential to office. The comprehensive plan assumes the land use will be low density residential as the sewer generation per acre is higher than that of office (822 versus 800 gpad). The Bluff Creek Golf Course may potentially be redeveloped into low density residential properties. Redevelopment of the Bluff Creek Golf Course may be required to convey the gravity sewer flows from the southern and eastern portions of the LB District. To service the existing properties on Delphinium Lane, Raspberry Hill, and Halla Nursery Drive West, eight-inch sanitary sewer will be needed. To convey the flow from the LB-1 -3 and -5 a 15-inch line will be need- ed. All of the LB-5 wastewater flows would be taken by gravity sewer to a proposed lift station north of Pioneer Trail and south east of the Highway 212/Powers Boulevard intersection. This proposed lift station would pump flows to the northeast along the Highway 212 and tie into an existing 21-inch sewer stub in LR-4 of the Lake Riley District. This lift station is critical in pumping all sewer south of Hwy. 212 to the MCES interceptor system. Alternative sewer alignments have been considered to service sub-district LB-3 and the portion of LB-5 south of Pioneer Trail. The alternative alignments, estimated cost (2016 dollars) and design considerations are included in Appendix D. City of Chanhassen 2040 Comprehensive Plan168 7.6 | Capital Improvement Program Analysis of Area South of Pioneer Boulevard The MUSA expansion area generally lies south of Pioneer Trail. Over the past 10 years, two studies have been performed to analyze utility extension to the area: the December, 2014 County Road 61 Corridor Plan by SRF Consulting Group, and the 2016 Kimley Horn Lower Bluff Creek District Sanitary Sewer Study. These studies are intended to serve as guiding documents; actual alignments will be established as development proposals are submitted. These studies are included in Appendix D. The Kimley Horn study included Option 2A, the trunk sewer alignment through the Bluff Creek Golf Course property, and four alternate alignments. Figure 3.4, Appendix A, depicts Option 2A as the future sewer align- ment, which is consistent with the previous comprehensive plan. Figure 7.19 includes a summary of only the estimated oversizing cost for trunk sewer and lift station costs to serve the sewer sub-districts south of Pioneer Boulevard. Figure 3.1 in Appendix A, details the existing MUSA area and the proposed MUSA expansion area. FIGURE 7.19 | Lift Station and Trunk Main Oversizing Cost for the MUSA Expansion Sewer Improvements Sewer Sub-District Utility Extension Cost LB – 5 Trunk Sewer, Lift Station & Forcemain $3,620,000 LB – 1 Trunk Sewer,Lift Station & Forcemain**$11,100,158 *Source: Kimley Horn & Associates for Option 2A **Source: County Road 61 Corridor Plan by SRF Consulting Group, Inc. in association with Hoisington Koegler Group, Inc. Alternative alignments for the LB-3 -4 and -5 subdistricts and the associated estimated costs are included in Appendix D. Lift Station Improvements As discussed in previous sections, the city owns and operates 31 lift stations, which require routine maintenance and upgrades. The expected service life of the controls and equipment in these lift stations is 20 years. Pumps and motors should be replaced at approximately 33,000 hours of use on an intermittent duty pump station. The city has routinely replaced and upgraded outdated pumping equipment and controls in many lift stations over the past several years. It is recommended that this program continue to prevent failure of older and outdated lift station equipment. This replacement program will need to continue over the next 20 years and beyond to keep all the lift stations run- ning efficiently, with minimal maintenance and breakdowns. Replacement of outdated pumps and controls in the lift station should be scheduled as part of the city’s capital improvements program. Figure 7.20 presents a detailed capital improvement program in 5-year increments as a proposed schedule for upgrades to the city’s lift stations. These tables also include the recommended improvements to be made to each of the lift stations listed. This list of improvements is based on information obtained from city staff and from a site investigation of each lift station. New lift stations that are constructed will need to be incorpo- rated into the lift station capital improvements schedule in the appropriate time period. Figure 7.21 presents the cost for the Lift Station Capital Improvements Program per 5-year increment of construction. Most costs include con- struction costs only and do not include administration, legal, or engineering fees as the work would be completed in-house by city staff; however, larger projects may need to be outsourced for design. City of Chanhassen 2040 Comprehensive Plan169 FIGURE 7.20 | Lift Station Capital Improvement Plan Lift Station Number Proposed Improvements Refurbish Control Panel1 New Controls and Control Panel2 New Pump3 New Concrete Top Slab & Hatch4 Wet Well Cleaning& Rehab5 Site Work6 Piping7 2018 26 ●●●●● 18 ●●●●●● 2019 16 ●●● 2020 22 ●●●●●● 2021 2 ●●● 17 ●● 2022 13 ●● 2023 1 ●● 20 ●●●●● 2024 7 ●●●● 2025 to 2030 6 ●●●● 9 ●●●● 10 ●●● 11 ● 12 ●●● 15 ●● 30 ●●●●● 31 ●●● 2031 to 2035 3 ●●● 8 ●●●● 14 ●●●● 19 ●●●● 27 ●●● 2036 to 2040 4 ●●● 5 ●●● 21 ●●● 23 ●●● 24 ●●● 25 ●●● 28 ●●● 29 ●●● 32 ●●● » 1. Includes replacement of panel and replacement of outdated electrical components. » 2. New controls and control panels are recommended for the lift stations that have panels that were installed in the 1980s and 1990s. » 3. Pumps that are over 20 years old need to be replaced. » 4. Includes replacement of sagging hatches or those without safety grates and replacement of the concrete top slab. » 5. Includes cleaning, inspection and applying a protective coating to the wet wells at the time pumps are replaced. » 6. Includes replacement of the bituminous driveways and regrading for proper drainage around the lift station. » 7. Includes restraining discharge piping. City of Chanhassen 2040 Comprehensive Plan170 Lift Station Number 2018 to 2024 2025-2030 2031-2035 2036-2040 Total Lift Station Costs 1 $75,000 $75,000 2 $45,000 $45,000 3 $75,000 75,000 4 $75,000 $75,000 5 $75,000 $75,000 6 $45,000 $45,000 7 $50,000 $50,000 8 75,000 $75,000 9 $75,000 $75,000 10 $85,000 $85,000 11 $45,000 $45,000 12 $50,000 $50,000 13 $45,000 $45,000 14 $50,000 $50,000 15 $45,000 $45,000 16 $45,000 $45,000 17 $45,000 $45,000 18 $45,000 $45,000 19 $65,000 $65,000 20 $45,000 $45,000 21 $75,000 $75,000 22 $55,000 $55,000 23 $75,000 $75,000 24 $200,000 $200,000 25 $75,000 $75,000 26 $45,000 $45,000 27 $65,000 $65,000 28 $75,000 $75,000 29 $75,000 $75,000 30 $65,000 $65,000 31 $45,000 $45,000 32 $75,000 $75,000 Total Costs $495,000 $455,000 $330,000 $800,000 $2,080,000 FIGURE 7.21 | Lift Station Improvements » Costs are for budgeting purposes only, and are subject to change as projects are studied, designed and constructed. » Project Costs include 10% for construction contingency. » Costs are estimated based on 2017 construction costs. Capital Improvements Summary A Capital Improvement Plan based on estimated phasing of trunk sewer construction is presented in Figure 7.1 and Figure 7.22. This figure includes trunk system improvements for service areas added, list station improvements and improvements for I/I reduction efforts. The projected 2040 sanitary sewer trunk system was broken down into improvements based on flow districts. The overall cost associated with these improvements over the next 22 years is approximately $22.5 million. These costs based upon 2017 dollars. City of Chanhassen 2040 Comprehensive Plan171 FIGURE 7.22 | Capital Improvements Improvement Description Extended Cost 2018 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $150,000 Lift Station #18,26 $75,000 Subtotal $425,000 2019 Inflow and Infiltration Abatement $200,000 2010 MUSA Lift Station $1,900,000 Sanitary Sewer Replacement $50,000 Lift Station #16 $50,000 Subtotal $2,200,000 2020 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $250,000 Lift Station #22 $50,000 Subtotal $500,000 2021 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $50,000 Lift Station #2,17 $75,000 Subtotal $325,000 2022 Lower Bluff Creek Trunk Sanitary Sewer $10,800,000 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $250,000 Lift Station #13 $50,000 Subtotal $11,075,000 2023 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $50,000 Lift Station #1,20 $120,000 Subtotal $370,000 2024 Inflow and Infiltration Abatement $200,000 Sanitary Sewer Replacement $150,000 Lift Station #7 $50,000 Subtotal $400,000 2025 -2030 2026-2030 Sanitary Sewer I/I Rehabilitation $1,000,000 2026-2030 Sanitary Sewer Reconstruction Program $850,000 Lift Station No. Improvements $455,000 Subtotal $2,305,000 2031 -2035 2031-2035 Sanitary Sewer I/I Rehabilitation $1,000,000 2031-2035 Sanitary Reconstruction Program $650,000 Lift Station No. Improvements $330,000 Subtotal $1,980,000 2036 -2040 2036-2040 Sanitary Sewer I/I Rehabilitation $1,000,000 2036-2040 Sanitary Reconstruction Program $850,000 Lift Station No. Improvements $800,000 Subtotal $2,650,000 Total Capital Improvements Plan Costs $22,445,000 » Costs are for budgeting purposes only, and are subject to change as projects are studied, designed and constructed. » Project Costs include 10% for construction contingency and 25% indirect costs where applicable. » Costs are estimated based on 2017 construction costs. City of Chanhassen 2040 Comprehensive Plan172 Funding The city’s current sewer fee structure is provided in Appendix E. Fees consist of sewer user fees, trunk sewer fees and sewer access charges (SAC). Utility usage fees are charged to both residential and non-residential users based on the actual water usage metered during the winter months. The purpose of the user charges is to fund the operation, maintenance and replacement costs of existing collection systems. User charges are primarily based on the actual costs of operations, maintenance and replacement of all wastewater system facilities. Trunk and SAC fees provide a funding mechanism for construction of the major infrastructure improvements needed to serve growth. The City of Chanhassen has established that growth should be funded and paid for by those who are in need of the facilities. The development creating the need for additional sanitary sewer system improvements are expected to pay for new trunk facilities and expansion of existing facilities through trunk and SAC fees. Currently, the trunk sewer fees are a per unit cost at the time of development and the SAC fees are calculated based upon the Metro- politan Council’s SAC Procedure Manual, which assigns non-residential properties a SAC unit for office or industrial/ commercial buildings. Developments and redevelopments that currently are not serviced by the city’s sanitary sewer system must construct lateral sanitary service to the parcel. The design and installation costs of the lateral sanitary sewer shall be bore by the project developer. Goals and Policies The timing of future trunk sanitary sewer improvements will be influenced by several parameters including develop- ment pressures in specific areas, failing on-site septic systems, regulatory requirements, availability of funds, etc. As a result it is difficult to accurately predict the timing of future improvements especially those which may occur far into the future. Therefore, the Capital Improvement Program is intended to serve as a guide only for future fiscal planning and should be reviewed on a regular basis as more current planning and cost data becomes available. The following items are general policy guidelines to be considered when reviewing and/or revising the city’s fee structure: System Expansion (Orderly Development) Development shall occur in an orderly fashion. Properties that abut parcels served by municipal utilities will be consid- ered as the next feasible property for development. The city may limit development activities to selected areas. Petitions to expand in areas not already under development will be considered. Factors that will be considered include, but are not limited to capacity in the MCES interceptor, capacity in the city’s collection system, economic factors including costs, number of developments under construction and the staff resources available to review the requested development. Leapfrogging Leapfrogging refers to the circumstance where certain parties want to develop an area not currently adjacent to the limits of the City of Chanhassen’s existing sewer system. The applicant wants to “leapfrog” over areas located adja- cent to the city’s existing services that would be the next logical area to be developed. In this circumstance, the City of Chanhassen could decide whether or not to approve such development. If approved, it is recommended that the inter- ested property owner pay for the entire cost of installing services to their property and resulting system upgrades. The developer shall be offered no credit or reimbursement for these costs. If development of the property that was “leap- frogged” is later initiated, payment of all trunk charges for the property will still be required regardless of the fact that the facilities were already installed before development occurred. City of Chanhassen 2040 Comprehensive Plan173 Overdepth and Oversizing The costs of additional depth shall be defined by differences in cost for the depth required by the development and the depth required for trunk facilities. Trunk oversizing as defined by the city and installed by the developer will be credited using the differential of pipe costs between the larger and the minimum pipe size required for the develop- ment. Bid pricing shall not be the sole determinate in defining a developer credit. The city shall determine if a credit will be given for a project. Lift Stations Trunk lift stations should be defined as those servicing more than one single development project. The trunk fees will pay for 100 percent of the cost of trunk lift stations. Lift stations that do not fit the definition for a trunk lift station are to be paid for by the developer. All lift stations shall be designed and constructed in accordance with city standards. The city will consider cost sharing for other lift stations if it is found that a particular lift station may be able to serve a greater area than the single development. The cost sharing shall include the oversizing or overdepth required to serve additional area and associated SCADA system costs to establish the lift station on the city’s SCADA system. Existing Developed Unserviced Properties There are a number of existing developed areas that do not receive sewer and water service within the city limits. The trunk system has been designed to handle all existing developed unserviced properties within the city, but it is not the policy of the city to initiate a sewer extension project. If an individual property owner or group of neighbor- ing property owners would like city sanitary sewer services where it is not yet available, the city will review whether or not it is economically viable. Existing developed, unserviced residential properties will be assessed or required to pay connection fees as required by the City Code. Existing Non-Residential Unserviced Properties Existing unserviced commercial/industrial or other non-residential properties wishing to expand or hookup to municipal utilities shall be treated the same as new development and will be assessed or required to pay connection fees as required by the city. 7.7 | Recommendations Based on the results and analysis of this study, it is recommended that the City of Chanhassen and the City Council, where applicable: » Adopt this report as the Comprehensive Sanitary Sewer Plan for the City of Chanhassen. » Review and update the CIP for trunk sanitary sewer facilities every year to reflect sewer improvement projects necessary for the next five year period. » Proceed with future sanitary sewer improvements in accordance with the initial 5-year capital improvement program. » Continue to reduce I/I to the existing collection system and maintain provisions for preventing I/I from entering the sanitary sewer system with new construction. City of Chanhassen 2040 Comprehensive Plan174 APPENDIX A | Figures City of Chanhassen 2040 Comprehensive Plan175 Lyman B l v d (C.R.18) Lyman Blvd (C.R.18)Pion e e r Trail (C R 14) (C R 6 1 )F ly in g C lo u d D riv ePowersBlvd(C.R.17)AudubonRoad(C.R.15)State Hig h w a y 1 01Hwy101GreatPlainsBlvd Hwy 101Gr e at Pl ainsBlvdStat e H w y 5 State H w y 5 Arboretum Boulevard Highway 41GalpinBlvd.(C.R.117)State H w y 5 State H w y 7 Hazeltine Blvd (Hwy 41)Chanhassen Rd. Hwy. 101AudubonRoad(C R 6 1 )F ly in g C l o u d D rMinnewashtaPkwyGalpinBlvd(C.R.19)£¤212 £¤212 £¤212 PowersBlvd(C.R.17Bl u f f C r e e k D rBluffCreekBlvd""""""" " """Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä Xä LS 8 LS 1 LS 2 LS 9 LS 7 LS 5 LS 3 LS 4 LS 6 LS 23 LS 19 LS 15 LS 29 LS 17 LS 18 LS 22 LS 20 LS 26 LS 24 LS 13 LS 10 LS 31 LS 11 LS 30 LS 27 LS 25 LS 12 LS 16 LS 28 LS 14 LS 21 Legend Xä Lift Station MCES Interceptor Forcemain Trunk Gravity Main Diameter 10" 12" 15" 16" 18" 21" 24" 27" 36" City Boundary 1 inch = 3,200 feet 0 3,200Feet¯ SewerCAD Model Update & Analysis City of Chanhassen, MN Trunk Sanitary Sewer System City of Chanhassen 2040 Comprehensive Plan176 ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä Lake Ann Park Rice Marsh Lake Park North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve Park Cathcart Park Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park P rairieK n o llPark PowerHillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park Carver Beach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum SugarbushPark Chanhassen Nature Preserve Minnesota Landscape Arboretum Park Pleasant ViewPreservePark Park Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake LS 8 LS 1 LS 2 LS 9 LS 7 LS 5 LS 3 LS 4 LS 6 LS 23 LS 19 LS 15 LS 29 LS 17 LS 18 LS 22 LS 20 LS 26 LS 24 LS 13 LS 10 LS 31 LS 11 LS 30 LS 27 LS 25 LS 12 LS 16 LS 28 LS 14 LS 21 LA-4 LB-1 LB-5 BC-9 MW-5 BC-1 LL-7 BC-8 LL-3 LA-6 LA-2 BC-3 BC-7 LR-4 LR-3 MW-1 LR-2 NO-8 BC-4 LB-3 LC-1 LR-5 MW-4 LR-1 LL-5 LA-3 MW-7 LA-7 LA-5BC-6 BC-5 NO-10 LA-11 NO-9 LB-4 NO-2 MW-3 NO-7 LA-9 LL-6 LA-10 LA-8 NO-5 NO-1 LL-1 LL-8 LB-2 NO-12 BC-2 LL-9 LA-1 LL-2 NO-4 LL-4 NO-11 BC-10 LL-10 BC-11 NO-6MW-6 ä Existing Lift Station Existing Sanitary Sewer Existing Force Main MCES Interceptor ä Future Lift Station Future Force Main Future Sanitary Sewer Sub Districts District Bluff Creek Lake Ann Lake Lucy Lake Riley Lotus Lake Lower Bluff Creek Minnewashta North Not to scale Ü Existing and Future Sanitary Sewer and Subdistricts Document Path: K:\2040 sewer\Separated_MXDs\Future_and_Existing_Sanitary_Sewer_and_Subdistricts.mxdDate: 9/11/2017 Figure 3.1 City of Chanhassen 2040 Comprehensive Plan177 Lake Ann Park Rice Marsh Lake Park North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve Park CathcartPark Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park PrairieK n ollP a rk Power HillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park CarverBeach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum Sugarbush Park Chanhassen Nature Preserve Minnesota Landscape Arboretum Park Pleasant ViewPreservePark Park Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake Not to scale Ü Sanitary Sewer Districts Document Path: K:\2040 sewer\Separated_MXDs\Sanitary_Sewer_Districts.mxdDate: 9/11/2017 District Bluff Creek Lake Ann Lake Lucy Lake Riley Lotus Lake Lower Bluff Creek Minnewashta North Figure 3.2 City of Chanhassen 2040 Comprehensive Plan178 Lake Ann Park Rice Marsh Lake Park North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve Park CathcartPark Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park PrairieK n ollP a rk Power HillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park CarverBeach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum Sugarbush Park Chanhassen Nature Preserve Minnesota Landscape Arboretum Park Pleasant ViewPreservePark Park Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake LA-4 LB-1 LB-5 BC-9 MW-5 BC-1 LL-7 BC-8 LL-3 LA-6 LA-2 BC-3 BC-7 LR-4 LR-3 MW-1 LR-2 NO-8 BC-4 LB-3 LC-1 LR-5 MW-4 LR-1 LL-5 LA-3 MW-7 LA-7 LA-5BC-6 BC-5 NO-10 LA-9 LA-11 NO-9 LB-4 NO-1 NO-2 MW-3 NO-7 LL-6 LA-10 LA-8 NO-5 LL-1 LL-8 LB-2 NO-12 BC-2 LL-9 LA-1 LL-2 NO-4 LL-4 NO-11 BC-10 LL-10 BC-11 NO-6MW-6 NO-3 MW-2 Not to scale Ü Sanitary Sewer Subdistricts Document Path: K:\2040 sewer\Separated_MXDs\Fig3.3_Sanitary_Sewer_Subdistricts.mxdDate: 9/11/2017 Sub Districts District Bluff Creek Lake Ann Lake Lucy Lake Riley Lotus Lake Lower Bluff Creek Minnewashta North Figure 3.3 City of Chanhassen 2040 Comprehensive Plan179 ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä Lake Ann Park Rice Marsh Lake Park North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve Park CathcartPark Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park P rairieK n o llPark Power HillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park CarverBeach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum Sugarbush Park Chanhassen Nature Preserve Minnesota Landscape Arboretum Park Pleasant ViewPreservePark Park Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake LS 8 LS 1 LS 2 LS 9 LS 7 LS 5 LS 3 LS 4 LS 6 LS 23 LS 19 LS 15 LS 29 LS 17 LS 18 LS 22 LS 20 LS 26 LS 24 LS 13 LS 10 LS 31 LS 11 LS 30 LS 27 LS 25 LS 12 LS 16 LS 28 LS 14 LS 21 ä Existing Lift Station Existing Sanitary Sewer Existing Force Main MCES Interceptor ä Future Lift Station Future Force Main Future Sanitary Sewer Not to scale Ü Existing and Future Sanitary Sewer Document Path: K:\2040 sewer\Separated_MXDs\Future_and_Existing_Sanitary_Sewer.mxdDate: 9/11/2017 Figure 3.4 City of Chanhassen 2040 Comprehensive Plan180 Not to scale Ü Existing On-Site Treatment Systems Document Path: K:\2040 sewer\Separated_MXDs\Existing_On_Site_Treatment_Systems.mxdDate: 9/11/2017 Figure 3.6 Not to scale Ü Existing On-Site Treatment Systems Document Path: K:\2040 sewer\Separated_MXDs\Existing_On_Site_Treatment_Systems.mxdDate: 9/11/2017 Figure 3.6 City of Chanhassen 2040 Comprehensive Plan181 ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä ä Lake Ann Park Rice Marsh Lake Park North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve Park CathcartPark Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park PrairieK n ollP ark PowerHillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park Carver Beach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum SugarbushPark Chanhassen Nature Preserve Minnesota Landscape Arboretum Park Pleasant ViewPreservePark Park Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake LS 8 LS 1 LS 2 LS 9 LS 7 LS 5 LS 3 LS 4 LS 6 LS 23 LS 19 LS 15 LS 29 LS 17 LS 18 LS 22 LS 20 LS 26 LS 24 LS 13 LS 10 LS 31 LS 11 LS 30 LS 27 LS 25 LS 12 LS 16 LS 28 LS 14 LS 21 ä Existing Lift Station Existing Sanitary Sewer Existing Force Main MCES Interceptor ä Future Lift Station Future Force Main Future Sanitary Sewer 2030 Landuse Type COMMERICAL OFFICE OFFICE INDUSTRIAL MIXED RESIDENTIAL LARGE LOT RESIDENTIAL LOW DENSITY RESIDENTIAL MEDIUM DENSITY RESIDENTIAL HIGH DENSITY AGRICULTURE PARKS OPEN SPACE PUBLIC SEMI PUBLIC Not to scale Ü Existing and Future Sanitary Sewer and 2040 Land Use Plan Document Path: K:\2040 sewer\Separated_MXDs\Future_and_Existing_Sewer_Landuse.mxdDate: 9/11/2017 Figure 5.1 City of Chanhassen 2040 Comprehensive Plan182 Lake Ann Park Rice Marsh Lake Park North Lotus Lake ParkLake Minnewashta Regional Park (County Park)SunsetRidgeParkMeadow Green Park K e r b e r P o n d P a r k Lake Susan PreserveBluff Creek Preserve Park CathcartPark Hesse Farm Preserve Pheasant Hill Park CurryFarmsPark CityCenterParkStoneCreekPark RoundhousePark HermanFieldPark CarverBeachPlayground Park PrairieK n ollP ark PowerHillPark Chanhassen Hills Park BandimereHeightsPark Greenwood Shores Park Carver Beach Park Bluff Creek Golf Course Raguet Wildlife Management Area (WMA) MN Valley National Wildlife Refuge Minnesota Landscape Arboretum SugarbushPark Chanhassen Nature Preserve Minnesota Landscape Arboretum Park Pleasant ViewPreservePark Park Minnewashta Heights Park S Lotus Lake Park Bandimere Park Chanhassen Estates Park Lake Susan Park Seminary Fen Scientific and Natural Area (SNA) Park Riley Ridge Park Pioneer Pass Park Raguet Wildlife Management Area (WMA) Lotus Lake Lake Riley Lake Minnewashta Lake Lucy Rice Lake Lake Susan Lake Ann Lake Virginia Lake Harrison Rice Marsh Lake Clasen Lake Lake St Joe Christmas Lake Not to scale Ü Homes Built Before 1969 Document Path: K:\2040 sewer\Separated_MXDs\Homes_Built_Before_1969.mxdDate: 9/11/2017 Figure 7.1 City of Chanhassen 2040 Comprehensive Plan183 APPENDIX B | MCES Design Peaking Factors City of Chanhassen 2040 Comprehensive Plan184 Average Flow (MGD) Peak Hourly Flow Factor Average Flow (MGD) Peak Hourly Flow Factor 0.00 to 0.11 4.0 1.90 to 2.29 2.8 0.12 to 0.18 3.9 2.30 to 2.89 2.7 .019 to 0.23 3.8 2.90 to 3.49 2.6 0.24 to 0.29 3.7 3.50 to 4.19 2.5 0.30 to 0.39 3.6 4.20 to 5.09 2.4 0.40 to 0.49 3.5 2.10 to 6.39 2.3 0.50 to 0.64 3.4 6.40 to 7.99 2.2 0.65 to 0.79 3.3 8.00 to 10.39 2.1 0.80 to 0.99 3.2 10.0 to 13.49 2.0 1.00 to 1.19 3.1 13.50 to 17.99 1.9 1.20 to 1.49 3.0 18.00 to 29.99 1.8 1.50 to 1.89 2.9 Over 30.00 1.7 MCES Flow Variation Factors for Sewer Design City of Chanhassen 2040 Comprehensive Plan185 APPENDIX C | Infiltration and Inflow Policies and Reduction Capital Improvements Plan City of Chanhassen 2040 Comprehensive Plan186 7.8 | City Code Section 19-44 Sec. 19-44. - Prohibited discharges into sanitary sewer system. » No person shall discharge or cause to be discharged any substance not requiring treatment or any substance not acceptable for discharge, as determined by the city or the Minnesota Pollution Control Agency, into the sanitary sewer system. Only sanitary sewage from approved plumbing fixtures may be discharged into the sanitary sewer system. » No person shall discharge or cause to be discharged, directly or indirectly, any stormwater, surface water, groundwater, roof runoff, subsurface drainage, or cooling water to any sanitary sewer. Any person having a roof drain, sump pump, unauthorized swimming pool discharge, cistern overflow pipe or surface drain connected and/or discharging into the sanitary sewer shall disconnect and remove any piping or system conveying such water to the sanitary sewer system. » All construction involving the installation of clear water sump pits shall include a sump pump with minimum size 1½ diameter dis charge pipe. The pipe attachment must be a rigid permanent type plumbing such as PVC or ABS plastic pipe with glued fittings, copper or galvanized pipe. All discharge piping shall be installed in accordance with the plumbing code. Discharge piping shall start at the sump pit and extend through the exterior of the building and terminate with not less than six inches of exposed pipe. Sump pump discharge location and flow shall be consistent with the approved development drainage plan for the lot. The discharge may not be pumped directly onto any public right-of-way unless approved by the city engineer or his designee. Any disconnects or openings in the sanitary sewer shall be closed and repaired in compliance with applicable codes. » Every person owning improved real estate that discharges into the city’s sanitary sewer system shall allow inspection by authorized city employees or its agents of all properties or structures connected to the sanitary sewer system to confirm there is no sump pump or other prohibited discharge into the sanitary sewer system. Any persons refusing to allow their property to be inspected shall immediately become subject to the surcharge as described in subsection (g) hereinafter. » Any owner of any property found to be in violation of this section shall make the necessary changes to comply with this section and such change shall be verified by authorized city employees or its agents. Any property or structure not inspected or not in compliance by May 1, 1994, shall, following notification from the city, comply within 14 calendar days or be subject to the surcharge as provided in subsection (g) hereinafter. » Upon verified compliance with this section, the city reserves the right to reinspect such property or structure at least annually to confirm continued compliance. Any property found not to be in compliance upon re-inspection or any person refusing to allow their property to be reinspected shall, following notification from the city, comply within 14 calendar days or be subject to the surcharge hereinafter provided for. » A surcharge of $100.00 per month is hereby imposed and shall be added to every sewer billing, to property owners who are found not in compliance with this section. The surcharge shall be added every month until the property is verified to be in compliance through the city’s inspection program. » The city council, upon recommendation of the city engineer, shall hear and decide requests for temporary waivers from the provisions of this section where strict enforcement would cause a threat to public safety because of circumstances unique to the individual property under consideration. Any request for a temporary waiver shall be submitted to the city engineer in writing. Upon approval of a temporary waiver from the provisions of this section, the property owner shall agree to pay an additional fee for sanitary sewer services based on the number of gallons discharged into the sanitary sewer system as estimated by the city engineer. » Violation of this section is a misdemeanor and each day that the violation continues is a separately prosecutable offense. The imposition of the surcharge shall not limit the city’s authority to prosecute the criminal violations, seek an injunction in district court ordering the person to disconnect the nonconforming connection to the sanitary sewer, or for the city to correct the violation and certify the costs of connection as an assessment against the property on which the connection was made. City of Chanhassen 2040 Comprehensive Plan187 APPENDIX D | Alternative Sanitary Sewer Service for the TH 101 and Pioneer Trail Area City of Chanhassen 2040 Comprehensive Plan188 ENGINEER'S OPINION OF PROBABLE COST - ALTERNATIVES SUMMARY Contract:CP PW285bb Owner:CITY OF CHANHASSEN Project:LOWER BLUFF CREEK DISTRICT SANITARY SEWER STUDY Date:Monday, June 6, 2016 Amount 3,620,000.00$ 3,780,000.00$ 5,520,000.00$ 4,040,000.00$ 2,390,000.00$ OPTION 5 Alternative OPTION 2A OPTION 2B OPTION 3A OPTION 3B City of Chanhassen 2040 Comprehensive Plan189 City of Chanhassen 2040 Comprehensive Plan190 City of Chanhassen 2040 Comprehensive Plan191 City of Chanhassen 2040 Comprehensive Plan192 City of Chanhassen 2040 Comprehensive Plan193 APPENDIX E | City of Chanhassen Sanitary Sewer Fee Structure City of Chanhassen 2040 Comprehensive Plan194 Residential based on winter quarter usage $4.64 per 1,000 gallons Commercial based on actual quarterly usage $4.64 per 1,000 gallons Minimum sewage charge per quarter (for amounts up to 6,000 gallons per quarter) $23.85 City of Chanhassen 2040 Comprehensive Plan196 Chapter 8Water City of Chanhassen 2040 Comprehensive Plan197 8.1 | Introduction Current and projected growth and development in Chanhassen, has created a need for improvements to the water system in order to meet anticipated water demands. The water distribution system has been expanded and improved in the decade since the last comprehensive water plan was completed. Now, the water system can be re-evaluated in light of recent improvements and the need for water system improvements can be re-evaluated. The updated water system model can be used to analyze demands, available supply capacity and storage, and available flow rates and pressures throughout the distribution system. For this purpose, SEH has updated the city’s existing water with water main, PRV, treatment and storage improve- ments that have occurred since the last model update. Additionally, we have processed updated demand data to geo-located water demands in the system so that they are modeled in the area of occurrence. Furthermore, regions of future development expected to create additional system demands were identified with the help of city staff, along with potential water system improvements that will allow the system to meet these expected demands. The computer model was updated using WaterGEMS v8i. The resulting product is a tool that can be used for hy- draulic analysis of the water system and scenario planning. The model can also be built-upon in the future if so desired to analyze water chemistry/water quality throughout the distribution system. In recent years, the city has utilized the model as a valuable tool for: » Identification of future locations of critical supply and storage facilities so land can be purchased and/or set aside before development begins in the designated area. » Provide a long range plan for water system upgrades/expansion so that proposed construction projects include properly sized water mains to allow for future development needs. » Identify deficiencies in the water system and corresponding improvements to reduce or eliminate these deficiencies. 8.2 | Existing Facilities The Chanhassen water system is composed of storage, supply, treatment and distribution components as described in the following paragraphs. Storage, supply and treatment facilities are listed in the tables below. Storage Storage facilities on a water system allow a more constant supply during variable demand conditions. During high demands when water customers are using a greater volume of water, part of that demand can be met by storage reserves in addition to direct pumping from wells. During low demand conditions, the well pumps can continue to operate with excess supply going to fill storage for later withdrawal. In addition to this operational function, storage tanks can serve as an emergency water source in the case of a supply failure (i.e. power outage, well maintenance, etc.); they also increase the amount of water available during a fire and they stabilize water system pressures. 8 | Comprehensive Water System Plan City of Chanhassen 2040 Comprehensive Plan198 Facility Pressure Zone Volume (MG) Useable Volume (MG) Overflow Elevation (ft) Style Arboretum Low 1.50 1.50 1120 Fluted Column - Elevated Lake Lucy Low 3.50 1.75 1120 Steel-Ground Storage Tank Minnetonka Middle School -West High 0.75 0.75 1200 Composite - Elevated East WTP Clearwell Low 0.20 0.20 NA Concrete - Below Grade Storage Capacity 5.95 4.20 Table 8.1 | Existing Water Storage Facilities Source: City Records Supply and Treatment Raw (untreated) water is currently supplied to Chanhassen by means of 12 wells as listed in Table 8.2. These wells utilize the Prairie Du Chien – Jordan aquifer with the exception of wells 5, 6 and 11, which draw water from the glacial drift aquifer. Of these 12 wells, seven pump into the east water treatment plant with the remainder pumping groundwater directly into the distribution system. The treatment plant uses a gravity filtration process to remove iron and manganese from the groundwater. Of the wells pumping directly into the distribution system, wells 3, 15, and 9 pump into the main pressure zone, while wells 7 and 8 pump into the high zone. These wells will eventually feed the new west water treatment plant. Due to a reduction in capacity, Wells 5 and 6 were deactivated in 2008 and are not included in the well summary. The firm well pumping capacity is that which can be supplied reliably even during maintenance activities or an emergency situation where the largest well pump might be out of service. This figure is often used for design and planning purposes, since it represents a worst-case scenario. The total operational supply capacity for Chanhassen is currently 10,600 gpm assuming the well capacities shown in Table 2 while the “firm” supply capacity is 9,350 gpm. The east water treatment plant has a filtration capacity of 6,000 gpm as is noted in Table 8.3. There are four high service pumps that draw from the clearwell at the treatment plant, each with a capacity of 2,000 gpm. Therefore, the firm pumping capacity of the plant is 6,000 gpm. City of Chanhassen 2040 Comprehensive Plan199 Table 8.2 | Existing Water Production Wells Table 8.3 | Water Treatment Facilities Well Name Pressure Zone Theoretical Capacity Operational Capacity (gpm) Operational Capacity (MGD) Treatment Well 3 Main 1,000 800 1.2 Well 7 High 1,350 1,000 1.4 Well 8 High 1,300 1,000 1.4 Well 9 Main 1,000 750 1.1 Well 15 Main 1,100 1,000 1.4 Well 2 Main 1,000 700 1.0 Well 4 Main 1,100 850 1.2 Well 10 Main 1,200 700 1.0 Well 11 Main 500 100 0.1 Well 12 Main 1,450 1,250 1.8 Well 13 Main 1,400 1,200 1.7 Well 14 Main 1,450 1,250 1.8 Total Well Capacity 10,600 15.3 Firm Well Capacity 9,350 13.8 Total Treated Well Capacity 6,050 8.7 Firm Well Capacity (Treated)4,800 6.9 Treatment Capacity 6,000 8.6 Source: City Records Source: City Records Facility Pressure Zone Max. Operational Capacity (gpm) Max. Operational Capacity (MGD) East W ater Treatment Plant Main 6,000 8.6 W est W ater Treatment Plant Main 6,000 8.6 Anticipated Treatment Capacity 12,000 17.3 City of Chanhassen 2040 Comprehensive Plan200 Distribution System The Chanhassen water system is comprised of water mains ranging in size from 6 inches to 24 inches in diameter. The system has been designed with larger trunk main loops with smaller branch mains. The system serves an elevation range of approximately 850 feet to 1080 feet. Pressures in the distribution system are correlated with elevations with properties at higher elevations receiving lower pressure and vice-versa. Because services at relatively high elevations have unacceptably low pressures when served by the low pressure zone, a high pressure zone has been created in the northwestern part of the city, east of Lake Minnewashta. This pressure zone is served by separate wells and a storage tank as discussed in the preceding sections. Water from the high zone can also serve demand on the low zone by passing through pressure reducing valves (PRVs) on the distribution system. These PRVs are shown in Appendix A - Figure 1. Under normal conditions, the PRVs between the high and low pressure zone remain closed. Additional PRVs are located throughout the system and maintain system pressure to the other low pressure zones. As noted earlier, areas of low land elevation have higher pressures in relation to the existing water storage tanks. When pressures exceed 80-90 psi, it is recommended to reduce these pressures to more usable levels. The Lake Riley, Inter Bluff and Lower bluff pressure zones are all service areas with lower land elevations. These areas have PRVs regulating pressure within the zone. Some of the pressure zones identified for future service have in ground vaults ready for installation of PRVs when additional development requires. Table 8.4 below provides a list of existing system PRVs and their operational status. Table 8.4 | Existing PRV Station Facility Inlet Pressure Zone/HGL Outlet Pressure Zone Number of Valves Valve Sizes (dia.,inch) Housing Status Camden Low Inter Bluff 4.00 Concrete BG Active HWY7 & 41 High Low 3.00 2,4,6 Active 101& 96th Low Inter Bluff 1.00 12 Not Active Kiowa Low Lake Rielly 3.00 12,3,1.5 Concrete Active Lyman & Springfield Low Lake Rielly 1.00 12 Concrete Active Monk Ct Low Lake Rielly 3.00 12,3,1.5 Concrete Active Pioneer Pass Low Inter Bluff 1.00 12,3,1.5 Concrete Not Active Powers Low Inter Bluff 1.00 12,3,1.5 Concrete Active Foxwood Low Inter Bluff 1.00 12,3,1.5 Concrete Active Source: City Records 8.3 | Current Water Demand Trends Chanhassen water utility records indicate that in 2016 the average daily (AD) water demand for the complete system was 2,570,000 gallons (1,783 gpm). The maximum day (MD) demand for 2016 was 6,200,000 gallons (4,328 gpm). Table 8.5 presents water demands in Chanhassen from 2007 to 2016. The average day demands over this period are also presented in graphical format in the Figure 8.1. City of Chanhassen 2040 Comprehensive Plan201 Table 8.5 | Recent Historical Average Water Use Average Day Water Sold Water Pumped ResidentialCommercialIndustrialOtherTotalAverage Day Pumped(MGD)Per Capita Water Pumped(gpd)Unaccounted Water (%)2007 23,066 1.95 0.31 0.21 0.02 2.49 3.12 135.3 20% 2008 23,578 2.02 0.38 0.24 0.04 2.67 3.22 136.6 17% 2009 24,481 2.27 0.45 0.43 0.07 3.21 3.64 148.8 12% 2010 24,699 1.89 0.46 0.26 0.06 2.66 2.70 109.2 1% 2011 23,179 2.05 0.42 0.23 0.06 2.76 2.83 122.3 3% 2012 23,484 2.38 0.48 0.29 0.08 3.23 3.26 138.8 1% 2013 23,840 2.09 0.44 0.26 0.05 2.85 2.88 120.7 1% 2014 24,432 1.85 0.30 0.21 0.18 2.54 2.64 108.2 4% 2015 24,951 1.83 0.38 0.23 0.06 2.50 2.54 101.7 2% 2016 25,332 1.73 0.31 0.17 0.29 2.50 2.57 101.4 3% Average 2.05 0.42 0.27 0.08 2.82 2.94 122.29 4% Average Per Capita Water Use (gpd) 83.19 16.27 10.48 3.78 113.72 % of Total 73%15%10%3% Source: DNR Water Use Records, City Records City of Chanhassen 2040 Comprehensive Plan202 Table 8.1 | Recent Historical Average Water Use 0 5,000 10,000 15,000 20,000 25,000 30,000 0 500,000 1,000,000 1,500,000 2,000,000 2,500,000 3,000,000 3,500,000 4,000,000 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016Average Day Demand (gpd)Year 8.4 | Peaking Demand Factors Peaking factors are ratios to the average day demand rate which are used in analysis of water systems. They are representative of temporal variation in water demands. A maximum day peaking factor for a water system is the ratio of the MD demand rate to the AD demand rate. It normally indicates the magnitude of seasonal differences in water demands. For example, if demands on a system increase substantially during the summer due to lawn irrigation, the peaking factors will also be large. Typical MD peaking factors range from 2.0 to 3.0. Larger systems generally have lower maximum day peaking factors. However, predominantly residential municipal- ities, especially in metropolitan areas, generally have higher peaking factors due to lawn irrigation demands. Recent MD peaking factors for Chanhassen are shown in Table 8.6. From the peak demand information that was available, it can be seen that the seasonal demand pattern in Chanhassen is within the typical range. This historical information is useful, not only to assess the capacity of existing water system facilities, but also to an- ticipate future needs. For future demand projections, a MD peaking factor of 3.1 was assumed in this report, which was the highest of the previous fifteen years. City of Chanhassen 2040 Comprehensive Plan203 Table 8.6 | Recent Historical Max Day Water Use and Peak Factors Year Average Day (MGD) Maximum Day (MGD) Maximum Day (gpm) Maximum Day to Average Day Ratio (Peak Factor) 2002 2.4 5.1 3,527 2.2 2003 3.0 8.9 6,169 3.0 2004 2.6 5.9 4,093 2.2 2005 2.7 7.8 5,396 2.9 2006 3.2 9.8 6,803 3.1 2007 3.1 9.2 6,392 3.0 2008 3.2 8.5 5,926 2.7 2009 3.6 8.3 5,771 2.3 2010 2.7 6.4 4,410 2.4 2011 2.8 6.7 4,618 2.3 2012 3.3 7.9 5,503 2.4 2013 2.9 7.4 5,146 2.6 2014 2.6 7.2 4,979 2.7 2015 2.5 6.3 4,391 2.5 2016 2.6 6.2 4,328 2.4 15 Yr. Average 2.9 7.4 5,163 2.6 15 Yr. Max 3.6 9.8 6802.8 3.1 Source: DNR Water Use Records, City Records City of Chanhassen 2040 Comprehensive Plan204 Table 8.7 | Historical Average Day & Per Capita Water Use Year Total Population Average Day Water Pumped (MGD) Average Day per capita Water Use (gpd) 2000 20,321 2.4 119.6 2001 20,982 2.7 126.8 2002 21,561 2.4 109.0 2003 22,376 3.0 132.7 2004 23,431 2.6 112.7 2005 23,652 2.7 113.3 2006 23,864 3.2 132.0 2007 23,506 3.1 132.7 2008 23,153 3.2 139.1 2009 22,806 3.6 159.6 2010 22,952 2.7 117.2 2011 23,179 2.8 122.1 2012 23,484 3.3 138.8 2013 23,954 2.9 120.1 2014 24,388 2.6 108.4 *2015 25,194 2.5 100.7 *2016 25,194 2.6 101.9 5 Year Average 2.8 114.0 5 -Year Max 3.6 138.8 *State Demographer population estimate for 2015 Source: DNR Water Use Records, City Records 8.5 | Demand Distribution Water demands are variable throughout the day and the year. On an annual basis, the heaviest demand conditions (maximum day demands) occur during the summer, when residential irrigation and other outdoor water use activi- ties increase. Water demands also vary over the course of a given day. Figure 8.2 represents the results of typical hourly demand distribution graph for total water use in the City of Chanhassen. This was calculated for a typical average day as well as a maximum day. For comparison purposes, a typical curve developed by the America Water Works Association (AWWA) for residential water use is also included on the graph as a reference. In general, commercial and industrial water uses are typically more constrained and predictable. City of Chanhassen 2040 Comprehensive Plan205 All three curves depict low water demand during the early morning periods. It shows increasing demand during the day with a slight decrease in the late morning periods. By late afternoon, demands level off then increase again during the evening hours, likely when residents are home and utilizing more water. As can be seen in the figure, for the peak day data, the peak hour occurs earlier in the morning, this is likely due to automated irrigation within the city for both commercial and residential customers. As discussed briefly in Section 8.2, storage reservoirs are used to supplement the supply of treated water during the peak usage hours within each day. During the early morning periods when demand is low, the system is able to produce water in excess of the demand. This excess is used to fill the storage reservoirs. When the demand rate exceeds the production rate, stored water in the reservoirs is used to make up for the deficit. The storage reservoirs will start to fill when the demand decreases below the total supply capacity. 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 120% 130% 140% 150% 160% 170% 180% 190% 200% 210% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25Demand %Hour Typical Average Water Use Day - Chanhassen, MN Typical Water Peak Use Day - Chanhassen, MN AWWA 8.6 | Analysis of the Existing Water System All utility-owned pipes 4 inches in diameter and larger were included in the computer model of the distribution sys- tem. Water pumping records from 2016 were used to represent current demands on the system. Storage and supply facilities were modeled based on specifications supplied by city staff. Additional calibration can be conducted in the future, after construction of short-term water system improvements, to improve its accuracy for future use. Figure 8.2 | Typical Hourly Demand City of Chanhassen 2040 Comprehensive Plan206 System Pressure Calculations Pressures in the future system under average day demands were calculated by the computer model. Due to the elevation changes in Chanhassen and the creation of separate pressure zones, the pressures in the system are highly variable. The model calculates pressures in the range of 40 – 110 psi throughout the existing water system. Higher pressures exist on the southern and eastern parts of the distribution system, where elevations are relatively low, with the exception of the reduced pressure zone around Lake Riley. In this zone, the pressure is maintained at a lower level through the use of pressure reduction valves. Industry standard recommends that the normal working pressure in water distribution systems be approximately in the range of 50 to 80 psi and not less than 35 psi. In addition, pressures in excess of 100 psi in the distribution sys- tem should be reuced by pressure reducing valves. The Minnesota Plumbing Code requires that building plumbing systems not exceed 80 psi. Many of the areas with pressures greater than 100 psi are localized on the system (they are limited to the fringes of the existing distribution system). Expansion of the distribution system to the south will require the use of pressure reducing valves as discussed later in this report. Where pressures exceed 80 psi, individual homes or businesses should install pressure reducing valves on the service line near the entrance to the building, as recommended by the Minnesota Plumbing Code. Lake Lucy Road and Powers Boulevard – Analysis of Low Pressures During High Demand Conditions As reported by city staff and mentioned in the previous comprehensive water plan, pressures in the area around the Lake Lucy Reservoir are low during peak demands. This effect is also observed in the computer model. Areas of relatively high elevations are present in the area. Elevations range from about 960 feet in the vicinity of the inter- section of Lake Lucy Road and Powers Boulevard to approximately 1040 feet in certain locations. Most of the high elevations are found on the south and east side of the intersection. It appears from the computer modeling results that there are about 50 homes that may drop below 35 psi during high demands when levels in the Lake Lucy Reservoir are low. If levels in the reservoir drop to 50% of capacity that cor- responds to a water elevation of 1105 feet (15 feet below overflow). At this level, any water service above an eleva- tion of about 1024 feet would drop below 35 psi. As stated previously, industry standard recommends that pressures remain about 35 psi under normal operating conditions, which includes periods of relatively high demand. Since this is primarily an elevation issue, distribution system replacements or upgrades are not expected to have a significant effect in improving pressures in the area. The following three options are presented here for dealing with this pressure issue: » Do nothing. The pressures do not appear to be critically low, and residents have adapted to conditions as they are. » Install individual booster pumps on homes that require higher pressure. » Create a small boosted pressure zone. A small booster station operating on a closed system is possible in the area. The city would need to conduct a detailed study of the issue to determine the optimal way to create such a system while maintaining circulation in the water system to prevent stagnation and the creation of dead ends that would limit fire protection capabilities. City of Chanhassen 2040 Comprehensive Plan207 Pressure Zone Analysis As part of the comprehensive water plan update, the establishment of the pressure zone boundaries was revisited. Since the last comprehensive water plan was completed, pressure reducing valves/vaults have been installed as the system has expanded, which in turn define the boundaries of the pressure zones. As the system evolves, it is gener- ally a good idea to revisit the pressure zone development, identify potential changes and review improvements so the ultimate system provided is optimized. For example, the previous plan identified potential options for definition of the pressure zones. Now that new water main has been installed and pressure reducing valve vaults have been placed, this boundary had changed slightly. As part of this update, a system wide contour map was updated to show parcels of land that can be served by the various pressure zones (see Appendix A - Figure A1). The high and low pressure zones are defined by the elevated water storage tanks that exist in these zones, with HGL’s of 1200’ and 1120’ respectively, these tanks maintain pressures of 40-80 psi to the majority of the service areas. The boundary of the high pressure zone has been clearly defined and does not have a very high potential to be changed or modified in the future. The low/main pressure zone, which is essentially the default pressure zone for the majority of the system, serves the remaining areas with the exception of the Lake Riley Pressure zone which is essentially a reduced pressure zone, served by PRVs from the main zone. In the past, this type of pressure zone had issues with large changes in flow. For example, when hydrants are flowed in this zone and shut off, pressure tends to bounce and transients are not very easily dissipated. This head resulted in water main breaks and water heater failure in some homes. In general, closed water pressure zones (without elevated storage or a standpipe) can experience difficulty with ma- jor flow changes as water is not compressible. When a valve is suddenly shut off (or a PRV throttled back), the wa- ter flowing in a corresponding pipe is suddenly forced to stop. Because of this, high pressure builds up immediately behind the shut off valve and low pressure forms in front of it. The momentum of the water is suddenly transferred into the physical system piping. As a result, a high-pressure region of water “piles up” in the pipe. This high pressure region then travels back along the pipe in the form of a wave. The border of the high-pressure zone is referred to as a pressure wave or transient. Such a pressure wave only exists for a short period of time, but can cause damage to piping and fittings. Transients are not very well understood and are not always accounted for in the design of a water distribution system. A previous comprehensive water plan identified five potential alternate water pressure zones, with two of the zones (Lake Riley and Interbluff) having similar hydraulic grade lines. In light of recent development, and construction of new PRV facilities, a new pressure zone configuration was developed. The primary goal of the pressures zone restructuring was to sustain ideal pressures at all service elevations, simplify zone configurations, and reduce the number of PRVs required to sustain pressure. Available Fire Flow Available fire flows were calculated using the computer model with a residual pressure of 20 psi. According to the American Water Works Association (AWWA), the minimum fire flow available at any given point in a system should not be less than 500 gpm at a residual pressure of 20 psi. This minimum criterion represents the amount of water required to provide for two standard hose streams on a fire in a typical residential area for residential dwell- ings with spacing greater than 100 feet. The distance between buildings and the corresponding recommended fire flow for residential areas is summarized in Table 8.8. City of Chanhassen 2040 Comprehensive Plan208 Table 8.8 | Typical Fire Flow Requirements Land Use Building Separation (feet) Available fire flow @ 20 psi (gpm) Single & Two Family Residential >100 500 Single & Two Family Residential 30-100 750 Single & Two Family Residential 11-30 1000 Single & Two Family Residential <10 1500 Multiple Family Residential Complexes -2,000 to 3,000+ Average Density Commercial -1,500 to 2,500+ High Value Commercial -2,500 to 3,500+ Light Industrial -2,000 to 3,500 Heavy Industrial -2,500 to 3,500+ Source: Insurance Services Office For commercial and industrial buildings, the needed fire flow rate varies considerably and is based on several characteristics of individual buildings such as: » Type of construction » Type of business that is using the property (occupancy) » Proximity and characteristics of nearby properties » Presence or absence of a fire sprinkling system While the fire flow requirements of commercial and industrial properties should be evaluated on a case-by-case basis, a general rule of thumb is that a municipal water system should aim to provide 3500 gpm to this type of land use. The Insurance Services Office (ISO), in determining a City’s fire insurance classification, only considers flow rates up to 3500 gpm. Available fire flows throughout the Chanhassen water system are highly variable due primarily to topographical changes. Available flow rates in the model range from about 500 gpm in some locations to greater than 5000 gpm in others. Areas of potential concern include commercial, industrial or high-density residential land uses where the available flow rate at the water main is less than 3500 gpm. The previous comprehensive water plan identified three distinct locations that had less than desirable available fire flow, as calculated by the water model. Since the previ- ous evaluation, improvements to the water system, including a new water tower have strengthened the water system. Subsequently, the areas of concern in relation to limited fire flow have been remedied. In short, major fire flow deficiencies were not identified as part of this analysis. However, this evaluation is not intended as a comprehensive building by building fire flow analysis, rather a comparison of computer modeling results with land uses across the existing water distribution system. 8.7 | Analysis of the Existing Water System Future sales and pumpage projections can be based on assumptions of water demands that can be expected accord- ing to future land use or population data. Two different means for water use demand projections are documented and compared below. City of Chanhassen 2040 Comprehensive Plan209 Table 8.9 | Projected Water Consumption - By Population Projected Water Demands - By Projected Population Previously in this report, per capita average day water use was calculated. The maximum for this figure for the past 5 years was found to be 139 gallons per day per person. This figure was then multiplied by projected population data. The resulting projected water average and max day demand data is shown below in table 8.9. Year Population Average Day Per Capita Water Pumped (gal) Average Day Water Pumped (MGD) Maximum Day to Average Day Ratio Projected Maximum Day Water Demand (MGD) Projected Maximum Day Water Demand (gpm) Projected Main Zone Maximum Day Water Demand (gpm) Projected High Zone Maximum Day Water Demand (gpm) 2015 24,655 3.4 10.6 7,389 6,429 961 2020 26,700 3.7 11.5 8,002 6,962 1,040 2025 29,200 4.1 12.6 8,752 7,614 1,138 2030 31,700 4.4 13.7 9,501 8,266 1,235 2035 34,400 4.8 14.8 10,310 8,970 1,340 2040 37,100 5.1 16.0 11,119 9,674 1,446 See Table 4 for Per capita water use projection and table 5 for max day to average day ratio Source: DNR Water Use Records, State demographer, Met Council Thrive 2040 Forecast Projected Water System Demands - By Future Land Use The city’s comprehensive plans developed a projected land use map. This map provides for an assumption of future land uses for planning purposes. This projected map also provides for an opportunity to compare the change in land use acreage from exiting uses to projected uses. This information can then be utilized to estimate future water usage based on associated land use changes. Table 8.10 below documents land use changes estimated in the city’s most recent comprehensive plan and equated existing average day water use to existing land use. The estimate of average day water use per acre developed from historical data is then applied to future land use estimates. City of Chanhassen 2040 Comprehensive Plan210 Table 8.10 | Projected Additional Water Consumption - Future Land Use Upper Main Pressure Zone Development Land use Total Acres Res. Units per Acre Units Pers. per Unit Demand per Person (gpd) Demand per Acre (gpd) Projected AD Demand (gpd) Projected AD Demand (MGD) Projected MD Demand (MGD) Residential Medium Density (RMD) 260.0 8 2.5 100 2,000 390,000 0.39 1.2 Residential Large Lot (RLL)120.0 0.4 2.5 100 100 9,000 0.01 0.0 Residential Low Density (RLD)680.0 4 2.5 100 1,000 510,000 0.51 1.6 Residential High Density (RHD)40.0 16 2.5 100 4,000 120,000 0.12 0.4 Office / Industrial 200.0 2,000 300,000 0.30 0.9 Office 60.0 2,000 90,000 0.09 0.3 Mixed Use 21.5 3,000 48,285 0.05 0.1 Commercial 0.9 2,000 1,380 0.00 0.0 Existing Residential to Connect to W ater System (REX) 0.0 411 2.5 100 102,750 0.10 0.3 Totals for Upper Main Zone 1,571,415 1.6 4.9 Low Area Planned Development Land Use Total Developable Acres Res. Units per Acre Units Pers. per Unit Demand per Person (gpd) Demand per Acre (gpd) Projected AD Demand (gpd) Projected AD Demand (MGD) Projected MD Demand (MGD) Residential Large Lot (RRL)78 2.5 100 19,500 0.02 0.1 Residential Low Density (RLD)39 2.5 100 9,750 0.01 0.0 Residential Low Density (RLD)162 2 2.5 100 500 81,000 0.08 0.3 Residential High Density (RHD)33.2 12 2.5 100 3,000 99,600 0.10 0.3 Office 53.4 1,500 80,100 0.08 0.2 Office Industrial 61 1,500 91,500 0.09 0.3 *Existing Gedney Demands 180,000 0.18 0.6 Totals for Low Area 561,450 0.56 1.74 Totals for Main Pressure Zone 2,132,865 2.13 6.61 High Zone Planned Development Land use Total Acres Res. Units per Acre Units Pers. per Unit Demand per Person (gpd) Demand per Acre(gpd) Projected AD Demand (gpd) Projected AD Demand (MGD) Projected MD Demand (MGD) Residential Low Density (RMD)40 4 2.5 125 50,000 0.05 0.2 Residential Med Density (RMD)19 8 2.5 125 47,500 0.05 0.1 Existing Residential Lots 49 2.5 125 15,313 0.02 0.0 Totals for High Zone 112,813 0.11 0.35 Total System (Additional Demand)2,245,678 2.25 6.96 City of Chanhassen 2040 Comprehensive Plan211 Table 8.11 | Projected Water Consumption - By Land Use Area Existing Average Day (MGD) Future Land Use Average Day (MGD) Projected Maximum Day Water Use (MGD) Projected Maximum Day Water Use (gpm) Main Pressure Zone 2.50 2.13 14.37 9,982 High Pressure Zone 0.37 0.11 1.95 1,353 Total 2.88 2.25 16.32 11,335 Existing AD calculated from current 6-year average, Peak factor= 3.1 for main zone, 4.0 for high pressure zone, See table 8.10 for calculations 8.7 | Future Water System Facilities The city is currently planning the construction of new water system facilities to accommodate future water needs. In addition to normal water uses, system facilities are often sized for fire protection needs, including addi- tional storage facilities ex. water tanks and supply. Facilities (wells and a future west water treatment plant) and water mains are planned to expand and improve water delivery. The following sections of this report discuss the estimated need for future water system facilities, based on the demand projections presented in Table 8.11. Future Distribution System In Appendix A - Figure 7, a proposed trunk water main layout has been drawn as part of the future water sys- tem vision. The future mains include 12-inch loops helping to balance the future water system by allowing large volumes of water to flow between supply, storage and points of use. These trunk main loops will be required to effectively transport water to the extremities of the proposed expansion areas. Looping is recommended wherev- er possible to minimize dead-ends in the water system. Dead-ends or branched water systems are less reliable since water must come from one direction. This forces the utility to shut off water to some customers during repairs or maintenance. In addition, larger head losses (or pressure losses) are experienced on dead-ends than on looped systems. This can limit available flow rates during fire protec- tion activities. In addition to future system improvements, the existing system could be improved by eliminating dead ends that are relatively long or less than 8 inches in diameter. This work should be coordinated with future street replacement projects to reduce costs where possible. Due to the fact that much of the future service area on the south end of the city already contains residential devel- opment, it is difficult to provide trunk main looping to serve the proposed developments on the far south end of the future service area, such as those proposed between the Hennepin County Regional Trail Corridor and Flying Cloud Drive. The proposed distribution system serves these developments using long dead end mains for this reason. If possible, the city should consider looping these segments to improve system hydraulics. A connection may be possible on the eastern extent of the future main shown on Flying Cloud Drive to the proposed 12-inch main on Deerbrook Drive. City of Chanhassen 2040 Comprehensive Plan212 Pressure Zones The Chanhassen water distribution system serves a range of elevations that prevents the entire system from being served on a single pressure zone. In order to keep pressures at acceptable levels throughout the system, there are currently three separate pressure zones in the system. The pressure zones are defined by different hydraulic grade, which allows pressures to remain in a more acceptable range. The pressure zone boundaries are shown on Appendix A - Figure 2. As part of the water comprehensive plan update, a review of the pressure zone boundaries was completed by ana- lyzing citywide land elevations with resulting reasonable pressures within each defined pressure zone. The result of this analysis is shown in Appendix A. In short, the current pressure zone plan could be optimized to simplify oper- ations. The map shown in Appendix A, Figure A1 is defined to show which pressure zone would be best suited to serve varying land elevations. In those areas that may have sops that fall out of tolerance, individual PRVs could be installed if the water pressure in the street exceeds 80 psi. The largest zone is the low pressure zone, which is currently served by the east water treatment plant; wells 3, 4 and 9; and the Lake Lucy and Arboretum storage tanks. The hydraulic grade of this zone is determined by an overflow elevation of 1120 feet for the storage tanks. The high pressure zone is located roughly between Hazeltine Blvd. and Galpin Blvd., north of Arboretum Blvd. This zone is currently served by wells 7 and 8 and an elevated storage tank, Melody Hill, which has an overflow eleva- tion of 1200 feet. Future developments on the south end of town are at relatively low elevation compared with the rest of the city. As the distribution system expands into this area, the water pressure in the mains will need to be reduced through the use of pressure reducing valves, similar to the way in which the Lake Riley Pressure Zone is currently served. In light of recent development and construction of new PRV facilities, a new pressure zone configuration was de- veloped. The primary goal of the pressures zone restructuring was to sustain ideal pressures at all service elevations, simplify zone configurations, and reduce the number of PRVs required. In the future, it appears that the existing Lake Riley Pressure Zone could be merged with the Interbluff Pressure Zone and served but a single elevated storage tank. Not only would this simplify system operations, and reduce the reliance on PRV stations, but pressures in these zones would be sustained by a storage vessel which would ease pressure transients and better serve major changes in flow, reducing the possibility of pressure spikes. Appendix A - Figure 7, represents a potential location for an elevated storage tank for the new combined Interbluff/Lake Riley Pressure Zone. Future Supply Facilities Firm supply capacity, which is the amount of water that can be reliably supplied with the largest well out of service, should be greater than or equal to the maximum day demand. When projected maximum day demands reach firm capacity, it is an indication that additional water supply capacity is needed. The projected 2040 maximum day demand for Chanhassen is approximately 11,120 (16.0 MGD) gpm. As men- tioned in previous studies, the city should plan to serve the maximum day demand with firm capacity, defined here as the supply capacity with the largest distribution system well out of service and the largest well supplying the east water treatment plant out of service. City of Chanhassen 2040 Comprehensive Plan213 The total system capacity with wells 2, 3, 4, 7, 8, 9, 10, 12, 13 and 14 will be 8,850 gpm. The firm capacity will be 7,450 gpm. To meet ultimate demand projections, there will be a well capacity need of approximately 3,700 (11,120 gpm – 7,450). Based on previous well capacities, that will equate to four additional wells to meet projected maxi- mum day demands. It is suggested that three additional wells serve the future west water plant while one additional well should be constructed to serve the east water treatment plant. Table 8.12 | Future Water System Supply Needs Year Maximum Day Water Pumped (MGD) Existing Firm Supply Capacity (MGD) Additional Supply Capacity Recommended (MGD) Additional Supply Capacity Recommended (gpm) Existing 5 Year Average 7.0 0.0 0 2020 11.5 0.8 552 2025 12.6 1.9 1302 2030 13.7 3.0 2051 2035 14.8 4.1 2860 2040 16.0 5.3 3669 10.7 Source: DNR Water Use Records, State demographer Future Storage Facilities In order to determine the water storage needs of a community, average daily demands, peak demands, and emergen- cy needs must be considered. For many communities, fire protection needs tend to be the controlling factor when calculating needed storage volume. Table 8.13 shows the calculations used to determine future water storage volume requirements for the total system in Chanhassen. These calculations consider ultimate development of the proposed expansion areas. Water storage facilities should be able to supply the desired rate of fire flow for the required length of time during peak demands, when the water system is already impacted by other uses and with the largest pump out of service. The calculations in Table 8.13 assume that 75% of storage volume is available for firefighting, maximum day de- mands are occurring on the system and the well with the greatest capacity is out of service. It appears, based on the demand projections used here, that Chanhassen will need about 1.0 million gallons of future additional storage for the system as a whole. There is a trade-off between storage volume for fire protection and water quality. If the storage volume becomes too much greater than average day demands, it can result in longer tank residence times and increased water age. With age, water can lose its chlorine residual and develop taste and odor problems as well as a potential for bacterial contamination. City of Chanhassen 2040 Comprehensive Plan214 Previously, 750,000 gallons of elevated storage was recommended for the high zone. Since this recommendation was made, the new 750,000 gallon tank has been constructed. With this tank in place, the projected additional storage need for the water system as a whole is around 1.0MG, which could be constructed in the main zone or as discussed later, in the proposed combine Interbluff Zone. Proposed locations for the future 1.0 MG tank is shown in Appendix A - Figure 7. Existing System 2030 Projection 2040 Projection Average Day Demand 2,568,510 4,399,370 5,148,790 Maximum Day Demand 6,232,000 13,638,048 15,961,249 Maximum Day Demand (gpm)4,328 9,471 11,084 Peak Hour Demand (gpm)8,439 16,100 18,843 Existing Storage Volume (gal)4,200,000 4,200,000 4,200,000 Well Pump Firm Capacity (gpm)7,450 7,450 7,450 Requirement No.1 Storage Volume Recommended (Min. Total Storage) (gal)2,568,510 4,399,370 5,148,790 Requirement No.2 Storage Volume Recommended (Min. Total Storage) (gal)1,973,467 3,182,211 3,724,291 Requirement No.3 Storage Volume Recommended (Min. Elevated Storage) (gal)68,000 994,000 1,284,000 Additional Storage Required (gallons)(1,630,000)200,000 900,000 Assumes Supply Remains Constant Table 8.13 | Complete System Water Storage Requirements 8.8 | Analysis of the Proposed System Layout The computer model of the distribution system was used to calculate pressures and available fire flows as was done previously for the existing system. Much of the new development is expected to the south of the existing water system, where elevations decrease as discussed in previously sections. When PRVs are set in the model to correspond to the recommended hydraulic grades and are located as shown in Appendix A - Figure 7, pressures and available flows for fire protection appear to be adequate to support the proposed land uses, based on the criteria presented in Section 8.4. Extended Period Simulation As part of the previous comprehensive plan, an extended period simulation (EPS) was conducted using the model to analyze system operations during several days of maximum day demands. The primary purpose of this simulation was to check for cumulative system imbalances that are not evident in standard simulations and to verify if system operations can be maintained under high demand conditions. The locations of supply and storage facilities and the sizes of distribution system pipes contribute to imbalances. Considerable distances between supply and storage locations and inadequately sized water mains can contribute to a reduced storage-replenishment rate and the inability to refill the towers at night during low demand periods. Once again, we have conducted a 72-hour water model simulation to review the possible water tower site A loca- tion. We have simulated a 72-hour period with three consecutive maximum day (MD) demand conditions. This time period was chosen since most supply and distribution system deficiencies will be exposed in three days of operations with MD demands. For example, if tanks are unable to refill daily under high demand conditions, a City of Chanhassen 2040 Comprehensive Plan215 trend will emerge in tank level data produced by the EPS. The model was simulated with a new tank located at site A, feeding the combined Interbluff/Lake Riley zone. The simulation found that it is feasible to sustain water system pressures with this type of configuration. The existing main pressure zone tanks operate and float at similar water levels/water elevations while the proposed tank sustains more consistent pressures in the lower pressure zone. 8.9 | Conclusions and Recommendations Supply Environments Firm supply capacity (the supply capacity with the largest pump out of service) should be greater than maximum day demands. The city is currently in the midst of constructing the west water treatment plant, which is estimated to have a capacity equal to the recently constructed east water treatment plant (6,000 gpm). In order to fully utilize these two plants, it is estimated that four new wells will be necessary during the life of this plan to meet projected water demands based on projected development in the city. Distribution System Improvements Trunk main looping should be a priority in the expansion of the service area and in water main replacement projects. The proposed layout of trunk water mains in this report would provide water supply and fire protection capabilities to existing and projected service areas. In addition, recommended trunk mains will connect water supply and storage facilities with points of use on the system. The city can also work towards the eventual combination of the Lake Riley and Interbluff pressure zones, which may be the most ideal location for a new elevated storage tank. Storage Improvements The volume of water storage needed in Chanhassen is dictated by daily demands as well as fire protection. Current- ly, storage capacity is meeting system needs. Projected demands will create a need for one additional 1.0 MG elevated water storage tank over the life of this plan. A new concept, which places a new tank in the combined Lake Riley/Interbluff lower pressure zone which will help supply these pressure zones with water as well as stabilize system pressures. Report and Model Update This report should be reviewed on an annual basis. Changes in development type or densities can have significant impacts on a water system’s performance, especially during drought conditions or emergencies such as fires. A re- port update should be planned for approximately 5 to 10 years dependent on development pressure. The water system model produced as part of this project is a valuable tool in assisting with design and construction of Chanhassen water system components. It can be easily updated on an annual basis and used to evaluate the im- pacts of proposed developments or project phasing. A copy of the computer model will be provided to the city. City of Chanhassen 2040 Comprehensive Plan216 APPENDIX A | City of Chanhassen 2040 Comprehensive Plan217 City of Chanhassen 2040 Comprehensive Plan218 City of Chanhassen 2040 Comprehensive Plan219 City of Chanhassen 2040 Comprehensive Plan220 City of Chanhassen 2040 Comprehensive Plan221 City of Chanhassen 2040 Comprehensive Plan222 City of Chanhassen 2040 Comprehensive Plan223 City of Chanhassen 2040 Comprehensive Plan224 City of Chanhassen 2040 Comprehensive Plan225 City of Chanhassen 2040 Comprehensive Plan226 City of Chanhassen, Minnesota Local Stormwater Management Plan Adopted xxxxxxxxxxx, 2018 COUNCIL: Mayor Denny Laufenburger Bethany Tjornhom Jerry McDonald Elise Ryan Dan Campion STAFF: Vanessa Strong Paul Oehme Photos: City of Chanhassen Wenck Associates, Inc. WENCK ASSOCIATES, INC.: Diane Spector Erik Megow Todd Shoemaker, P.E. File 1481-0013 Prepared by: WENCK Associates, Inc. 1800 Pioneer Creek Center Maple Plain, MN 55359 Phone: 763-479-4200 Fax: 763-479-4242 [This page intentionally blank for printing] Table of Contents Page | i REVIEW DRAFT Local Stormwater Management Plan, January 2018 1.0 INTRODUCTION AND PURPOSE ............................................................................................. 1-1 1.1 Purpose of Plan ................................................................................................... 1-1 1.2 Relationship to Other City Plans ......................................................................... 1-1 1.2.1 Comprehensive Plan............................................................................ 1-1 1.2.2 Storm Water Pollution Prevention Program ....................................... 1-1 1.2.3 Wellhead Protection Plan ................................................................... 1-2 1.2.4 Bluff Creek Natural Resources Management Plan .............................. 1-2 1.3 Relationship to Other Plans ................................................................................ 1-3 1.3.1 Metropolitan Council Water Resources Policy Plan............................ 1-3 1.3.2 Minnesota River Basin Plan ................................................................. 1-3 1.4 Relationship to Other Regulatory Agencies ........................................................ 1-3 2.0 REGULATORY FRAMEWORK .................................................................................................. 2-1 2.1 Chanhassen Ordinances and Policies .................................................................. 2-1 2.2 State Agency Regulatory Framework ................................................................. 2-1 2.2.1 Metropolitan Council .......................................................................... 2-2 2.2.2 Minnesota Pollution Control Agency .................................................. 2-2 2.2.3 Minnesota Department of Natural Resources .................................... 2-2 2.2.4 Minnesota Department of Health ....................................................... 2-3 2.2.5 Carver County and Carver SWCD ........................................................ 2-3 2.2.6 Watershed Districts and WMOs .......................................................... 2-4 2.3 Wetland Conservation Act .................................................................................. 2-8 2.4 Relationship to NPDES Stormwater Permit ........................................................ 2-8 2.5 Water Resource Related Agreements ................................................................ 2-8 3.0 ASSESSMENT OF PROBLEMS ................................................................................................. 3-1 3.1 Hydrologic Modeling ........................................................................................... 3-1 3.1.1 Areas of Known Flooding .................................................................... 3-1 3.2 Impaired Waters ................................................................................................. 3-1 3.3 TMDLs and UAAs ................................................................................................. 3-2 3.3.1 Total Maximum Daily Load (TMDL) Studies ........................................ 3-2 3.3.2 UAAs .................................................................................................... 3-3 3.4 Problems and Issues ........................................................................................... 3-4 4.0 GOALS AND POLICIES ............................................................................................................ 4-1 4.1 Goals and Policies ............................................................................................... 4-1 5.0 IMPLEMENTATION PLAN ....................................................................................................... 5-1 5.1 Permitting and Enforcement .............................................................................. 5-1 5.1.1 Current Ordinances and Potential Revisions ...................................... 5-1 5.1.2 NPDES Permit Implementation Requirements ................................... 5-6 5.2 Implementation Programs and Projects ............................................................. 5-6 5.2.1 Education and Outreach Program ....................................................... 5-6 5.2.2 Monitoring Program ............................................................................ 5-7 5.2.3 Operations and Maintenance ............................................................. 5-8 5.2.4 Capital Improvement Program ............................................................ 5-9 Table of Contents Page | ii REVIEW DRAFT Local Stormwater Management Plan, January 2018 5.3 Implementation Plan Funding .......................................................................... 5-10 5.4 Addressing Identified Problems and Issues ...................................................... 5-15 6.0 AMENDMENTS TO THE PLAN ................................................................................................ 6-1 6.1.1 WMO Plan Amendments..................................................................... 6-1 6.1.2 Major Plan Amendments .................................................................... 6-1 6.1.3 Routine Updates .................................................................................. 6-1 7.0 REFERENCES ......................................................................................................................... 7-1 TABLES Table 2.1. MCWD LGU Coordination Plan……………………………………………………………………………………………..2-4 Table 3.1. Impaired Waters in Chanhassen. .............................................................................................. 3-1 Table 3.2. Problems, issues, and opportunities. ........................................................................................ 3-4 Table 4.1. Water resources management goals. ....................................................................................... 4-1 Table 4.2. Comparison of TP-40 to Atlas 14 event depths......................................................................... 4-2 Table 4.3. Agencies with regulatory authority. .......................................................................................... 4-7 Table 5.1. Regulatory requirements of various agencies compared to Chanhassen current ordinances. 5-3 Table 5.2. Chanhassen LWMP Implementation Plan 2018-2027............................................................. 5-11 Table 5.3. Chanhassen LWMP Implementation Plan 2018-2027 by year. ............................................... 5-13 Table 5.4. Implementation actions addressing identified problems and issues...................................... 5-15 FIGURES Figure 1.1. City of Chanhassen in located in the Twin Cities Metro Area, Minnesota. ............................... vii Figure 2.1. Watershed Management Organizations in Chanhassen. ........................................................ 2-7 APPENDICES Appendix A: Land and Water Resources Inventory Appendix B: Hydrologic Modeling Update Acronyms Page | iii REVIEW DRAFT Local Stormwater Management Plan, January 2018 AIS Aquatic Invasive Species BMP Best Management Practice BWSR Board of Water and Soil Resources cfs cubic feet per second cfu colony-forming unit Chl-a Chlorophyll-a CIP Capital Improvement Program DNR Department of Natural Resources DO Dissolved Oxygen EPA or USEPA US Environmental Protection Agency F-IBI Index of Biotic Integrity for Fish LA Load Allocation LWMP Local Water Management Plan Met Council Metropolitan Council mg/L milligrams per liter M-IBI Index of Biotic Integrity for Macroinvertebrates MPCA Minnesota Pollution Control Agency MS4 Municipal Separate Storm Sewer Systems NPDES National Pollutant Discharge Elimination System NWI National Wetland Inventory SD Secchi depth SWCD Soil and Water Conservation District SWPPP Storm Water Pollution Prevention Program TMDL Total Maximum Daily Load TP Total phosphorus TSS Total suspended solids µg/L microgram per liter WLA Wasteload Allocation WD Watershed District WMO Watershed Management Organization Executive Summary Page | iv REVIEW DRAFT Local Stormwater Management Plan, January 2018 The City of Chanhassen, Minnesota is located in northeastern Carver County (see Figure 1.1), except for one small area in Hennepin County. It is bordered on the east by the City of Eden Prairie; on the north by Shorewood; and on the west by Victoria and Chaska. Its southern border is the Minnesota River. The City has land in four watersheds: the Carver WMO, Riley-Purgatory-Bluff Creek, Minnehaha Creek, and the Lower Minnesota River Watershed Districts. This Local Water Management Plan (LWMP) was prepared in conformance with Minnesota Statutes 103B.235 and Minnesota Rules 8410. This plan is intended to provide the City of Chanhassen with information and direction in the administration and implementation of water resource management activities within the City during the period 2018-2027. It serves as a guide to projects, provides for effective allocation of resources, and sets forth a funding plan for projects and programs over the next 5 to 10 years. A number of water resources-related problems, issues and requirements were identified in this planning process. These include: • The reissue of the State of Minnesota’s NPDES General Stormwater Permit in 2013 requires local governments such as Chanhassen to adopt and enforce standards and ordinances for development and redevelopment which limits stormwater runoff from sites over one acre in size. • New or expanded maintenance and administrative responsibilities are required in the NPDES permit to control runoff and protect and improve water quality from City owned or maintained land. • All 4 WMO’s are updating their 10 year Comprehensive Plans. The City is required to amend their LWMP to be consistent with each WMO • In order to maintain and/or obtain primary responsibility for managing local water resources additional ordinance revisions are required. The alternative is to defer the authority to the local WMO • Some of the lakes and streams in the City do not meet the state’s water quality standards for recreation and aquatic life. • Stream gullies and escarpments are contributing excess sediment into Bluff Creek and the Minnesota River. The LWMP updates the City’s goals and related policies to address the problems and issues that were evaluated for the updated LWMP. The goals are as follows: Executive Summary Page | v REVIEW DRAFT Local Stormwater Management Plan, January 2018 Implementation This LWMP includes an Implementation Plan to help achieve those goals through capital projects, management programs, and operations and maintenance activities. Capital Projects. The Riley-Purgatory-Bluff Creek WD has completed Use Attainability Assessments (UAAs) and/or Total Maximum Daily Load (TMDL) studies for some of the waterbodies in the City. These studies have identified potential actions that could help protect or improve water quality. The City evaluates partnership opportunities with the Districts to undertake priority projects as project plans develop. In addition, the City has been systematically surveying the condition of storm drainage system features. These condition assessments have identified a number of potential improvement projects, and priority actions are included in the Implementation Plan. The Implementation Plan also includes projects to install water quality Best Management Practices (BMPs) with street or other construction projects. Management Programs. The City operates several programs that directly or indirectly affect water resources, including a Public Education and Outreach program. A variety of social and traditional media are also used to inform and educate citizens. City and partnership events, workshops and festivals provide additional opportunities for education. The City of Chanhassen collaborates with the Metropolitan Council to participate in its Citizen Assisted Monitoring Program (CAMP). Volunteer residents take samples from the following lakes: Lake Lucy, Lake Minnewashta, Lake Riley, Lake St. Joe, Lake Susan, and Lotus Lake. Aquatic Invasive Species management is implemented through a partnership with Carver County WMO, Riley Purgatory Bluff Creek Watershed District, and local Lake Associations. Operations and Maintenance Activities. The City undertakes a variety of operations and maintenance actions, including actions required by its NPDES MS4 Permit. These include ongoing water body inventory and condition assessments, erosion control monitoring, street sweeping, stormwater system inspection, maintenance and repairs, road salt management, and a general education and outreach program. Plan Updates Goal 1.Promote abstraction through infiltration, reuse and other methods where practicable to do so to provide flood protection, ground water recharge and improved water quality. Goal 2. Achieve water quality standards in lakes, streams, and wetlands consistent with their designated uses and established classifications. Goal 3. Protect and rehabilitate wetlands to maintain or improve their function and value. Goal 4. Prevent contamination of the aquifers and promote groundwater recharge to maintain base flows in streams and wetlands. Goal 5. Maintain primary responsibility for managing water resources at the local level and continue coordination and cooperation with other agencies and organizations. Goal 6. Cultivate an environmentally literate public to promote an active community role in sustainable management of water resources. Executive Summary Page | vi REVIEW DRAFT Local Stormwater Management Plan, January 2018 Section 6 of this Plan sets forth a process to update the LWMP in response to city operations, budget planning, work requirements or WMO plan revisions. The Implementation Plan and Capital Improvement Program (CIP) will be reviewed and updated periodically by the City as needed based on new information or as new opportunities and requirements arise. At a minimum, the CIP will be updated biannually. Major issues that result in potential significant revisions to the LWMP will be forwarded to the Watershed Districts and WMO for discussion and review to determine if the LWMP will require a formal update. Page | vii REVIEW DRAFT Local Stormwater Management Plan, January 2018 Figure 1.1. City of Chanhassen in located in the Twin Cities Metro Area, Minnesota. Page | 1-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 1.0 Introduction and Purpose 1.1 PURPOSE OF PLAN The City of Chanhassen is located in Carver County within the Twin Cities Metropolitan Area (Figure 1.1). This Local Water Management Plan (LWMP) describes how the City of Chanhassen will fulfill the requirements of Minnesota Statutes 103B.235 and Minnesota Rules 8410 in the management of the water resources within the city during the period 2018-2027. It is a summary of the city’s management goals and policies, and strategies, including a capital improvement program and review of local policies and ordinances. Minnesota Statutes 103B.231 establishes the purposes of water management planning in the Twin Cities Metropolitan Area as to: 1. Protect, preserve, and use natural surface and groundwater storage and retention systems 2. Minimize public capital expenditures needed to correct flooding and water quality problems 3. Identify and plan for means to effectively protect and improve surface and groundwater quality 4. Establish more uniform local policies and official controls for surface and groundwater management 5. Prevent erosion of soil into surface water systems 6. Promote groundwater recharge 7. Protect and enhance fish and wildlife habitat and water recreational facilities 8. Secure the other benefits associated with the proper management of surface and ground water Minnesota statutes and administrative rules also require that City management of its water resources be consistent with the requirements of the four watershed districts having land within its borders: Riley- Purgatory-Bluff Creek Watershed District; Minnehaha Creek Watershed District; Carver County WMO; and the Lower Minnesota River Watershed Management District. 1.2 RELATIONSHIP TO OTHER CITY PLANS This LWMP is intended to address surface water management; ground water supply and wellhead protection planning are separate from this Plan except as surface water management influences groundwater. 1.2.1 Comprehensive Plan The Comprehensive Plan is a blueprint for how the City manages its land use. The Metropolitan Council in accordance with the Metropolitan Land Planning Act develops and updates regional planning policies and requires that all cities periodically update their Comprehensive Plans to be consistent with those policy plans. Thrive MSP 2040 and the 2040 Water Resources Policy Plan identify certain required elements of local water resources planning. This Local Water Management Plan Update meets those requirements. 1.2.2 Storm Water Pollution Prevention Program Chanhassen is regulated by the State of Minnesota’s National Pollutant Discharge Elimination System (NPDES) General Stormwater Permit as a Municipal Separate Storm Sewer System (MS4). In accordance Page | 1-2 REVIEW DRAFT Local Stormwater Management Plan, January 2018 with that permit, the City developed a Storm Water Pollution Prevention Program (SWPPP) comprised of a series of Best Management Practices (BMPs) in six Minimum Control Measure (MCM) areas to prevent pollution and to manage and treat runoff discharged from the city into state waters. An annual report documents the specific actions taken in the previous year, which is presented to the public for review, approved by the City Council, and submitted to the Minnesota Pollution Control Agency (MPCA) for approval. In 2006 the City was one of 30 cities statewide selected by the MPCA to undertake a special Nondegradation Assessment as part of its NPDES permit. The purpose of the study was to assess changes in stormwater runoff volume, total suspended solids (TSS) and total phosphorus (TP) loading since 1988, and to predict how land change expected to 2020 would impact those parameters. The study found that while runoff volumes had increased, pollutant loading had decreased as a result of City and watershed district water quality treatment requirements. A new General Permit became effective August 1, 2013, and the City and other MS4s were required to prepare a new SWPPP and submit obtain renewal of coverage under the permit. Many of those BMPs are incorporated into this LWMP. 1.2.3 Wellhead Protection Plan Minnesota state statutes require the owners and operators of public drinking water systems to prevent contamination of public water supply wells by effectively managing potential contaminant sources in the area which contributes water to those wells. They must prepare a wellhead protection plan which includes: a map showing the boundaries of the delineated wellhead protection area, a vulnerability assessment of the well and the wellhead protection area, an inventory of potential sources of contamination within the wellhead protection area, a plan to manage and monitor existing and proposed potential sources of contamination, and a contingency strategy for an alternate water supply should the water supply be disrupted by contamination or mechanical failure. The City’s Wellhead Protection Plan (WHPP) addresses the ten municipal supply wells used by the City. Initially completed in 2002, it was updated in 2011 to include new wells and additional analysis. The WHPP includes an identification of a Wellhead Protection Area and an assessment of the vulnerability of the wells to contamination. One well, an emergency backup well, was identified as vulnerable to surface contamination, while the other wells were classified as not vulnerable. The uppermost source water aquifer within the Drinking Water Supply Management Area (DWSMA) was identified as having mostly low vulnerability to surface contamination. Infiltration of stormwater is not desirable where the DWSMA indicates the aquifer is vulnerable to contamination from the surface, and other stormwater BMPs are recommended. DWSMA vulnerability is further described at the subwatershed level in Appendix A of this Plan. 1.2.4 Bluff Creek Natural Resources Management Plan The Bluff Creek Natural Resources Management Plan was completed in 1996. The Management Plan identified high-quality natural features for preservation as well as potential restoration projects. To protect this area, several zoning and land use recommendations were intended to minimize new impervious surface, control and limit stormwater runoff and pollutant loading, and protect or enhance wildlife corridors and connectivity. Many of these recommendations were incorporated into the Bluff Creek Overlay District zoning ordinance enacted in 1998. Maintaining and enforcing stormwater Page | 1-3 REVIEW DRAFT Local Stormwater Management Plan, January 2018 management requirements through this Plan and the Riley-Purgatory-Bluff Creek Watershed District are integral to achieving the goals of the Bluff Creek Plan. 1.3 RELATIONSHIP TO OTHER PLANS Several agencies manage programs or regulate activities for local stormwater or water resource management. The following sections summarize those relevant to local water management planning. 1.3.1 Metropolitan Council Water Resources Policy Plan The Metropolitan Council’s Water Resources Management Policy Plan is a framework to integrate water resources management and protection with planning for the Metro region’s growth. In 1995, the Metropolitan Land Planning Act was amended to require that each city and township's comprehensive plan include a local water management plan. These local plans need to be consistent with Minnesota Statutes 103B and Metropolitan Land Planning Act requirements. Local water management plans are reviewed by the Met Council as part of the local comprehensive planning process prior to their approval by the WMO and adoption by the city or township. In addition to the local stormwater plan elements required in statute and administrative rule, the Policy Plan expects communities to show that they are committed to the Met Council’s goal of no adverse impact (nondegradation) for area water resources. Local plans should include actions such as ordinances requiring runoff water quality treatment and limiting the rates and volumes of runoff; adopting Best Management Practices for development and redevelopment; and wetland management planning. The Policy Plan places a special emphasis on nondegradation of lakes identified as Priority Lakes. The Met Council defines Priority Lakes as lakes of high regional recreational value that are at least 100 acres in size; supply drinking water; have very good water quality; or have exceptional significance for wildlife habitat. Lakes in Chanhassen that have been designated as Metro Priority Lakes are: Minnewashta, Ann, Lotus, and Riley. 1.3.2 Minnesota River Basin Plan The Minnesota River flows southeast from its source at Big Stone Lake on the South Dakota border to Mankato then northeast to join the Mississippi River at Fort Snelling (about 335 total miles). It covers approximately 16,770 square miles, roughly 10 million acres. Thirteen major watersheds in Minnesota drain into the basin, which touches 37 counties. Most of Chanhassen is located in the Lower Minnesota River subbasin. The 2001 Minnesota River Basin Plan (MPCA 2001) lays out a broad framework for directing environmental programs toward improving water quality in the Minnesota River, its tributaries and other water bodies. Priority actions include reducing nutrient, sediment, and bacteria inputs to the River and improving the health of biologic communities. 1.4 RELATIONSHIP TO OTHER REGULATORY AGENCIES The LWMP is intended to meet requirements outlined in Minnesota Rules 8410 and Minnesota Statutes 103B as well as provide a user-friendly tool for day-to-day management of the City’s water resources. The LWMP provides the following information, as required in the Minn. Statutes 103B.235. • Existing and proposed physical environment and land use within the City • Drainage areas and the volumes, rates, and paths of stormwater runoff • Identification of stormwater storage areas Page | 1-4 REVIEW DRAFT Local Stormwater Management Plan, January 2018 • Performance standards for water quality and water quantity protection • Implementation program • Capital improvement program The Plan was also written with consideration of the needs, requirements and direction outlined in the following: • Local Water Management Rules – Minn. Rules 8410 • Wetland Conservation Act – Minn. Rules 8420 • Minnesota Pollution Control Agency Water Quality Standards – Minn. Rules 7050 • U.S. Army Corps of Engineers Section 404 Clean Water Act • Metropolitan Council Water Resources Policy Plan May 2005 • Riley-Purgatory-Bluff Creek Watershed District Water Management Plan - January 2011 • Minnehaha Creek Watershed District Comprehensive Water Resources Management Plan – April 2007/ January 2018 • Carver County WMO Comprehensive Water Resources Management Plan – October 2010 • Carver County Groundwater Plan - 2016 • Lower Minnesota River Watershed District Water Management Plan - December 2011 • Metropolitan Surface Water Management Act (Chapter 601, Laws of 1990) • Use Attainability Analyses (UAAs) for lakes and streams in the city • The approved TMDLs for turbidity and fish biotic impairments in Bluff Creek The watershed organizations and their respective jurisdictions within the City are shown on Figure 2.1. The LWMP is intended to satisfy the rules set forth in the current watershed management plans. The City will participate in upcoming revisions, evaluate any future watershed management plan amendments in relation to the LWMP and incorporate items as needed. Page | 2-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 2.0 Regulatory Framework 2.1 CHANHASSEN ORDINANCES AND POLICIES The City has enacted several ordinances to protect and manage its water resources. Chapter 19 of Chanhassen City code addresses design standards and requirements for water and sewers. Article V addresses illicit discharge detection and elimination within Chanhassen storm sewer systems. Article VII spells out development standards and design elements intended to implement the standards and achieve the goals set forth in this plan in order to preserve, protect and improve the city’s surface water resources. Specific elements within Article VII include erosion prevention and sediment control requirements, hydrologic and hydraulic design elements, water quality, rate control and volume reduction requirements. Those design standards include more stringent requirements for developments that discharge into Assumption Creek. That Article also establishes a Surface Water Management Utility and associated fees for operation of this utility. Chapter 20 is the City’s Zoning Code. Article VI establishes wetland management classifications and standards for managing and protecting wetlands in the city. The City of Chanhassen is the responsible Local Government Unit (LGU) for the administration of the Wetland Conservation Act (WCA) in all areas of the city. This article includes standards for setbacks and for establishing and maintaining buffer strips adjacent to wetlands, and policies and procedures for altering wetlands and mitigating impacts to wetland functions and values. Article V establishes the City’s Floodplain Overlay District and floodplain management standards. The ordinance establishes the regulatory flood protection elevation as no lower than two feet above the elevation of the regional flood. The ordinance also establishes what land uses may occur within the Overlay District under what conditions. Article VII sets forth the City’s Shoreland Management District ordinances. The lakes and streams within the city that are regulated under this ordinance are established by management classification. The article includes minimum lot size and width requirements, structure and onsite sewage system setbacks, and limitations on altering and clearing vegetation and adding impervious surface. Article XXVIII establishes bluff protection standards in general. Article XXXI establishes the Bluff Creek Overlay District and standards for protecting the quality and extent of the natural features within the District, which is centered on Bluff Creek. The Overlay District defines a Primary Zone, which is intended to be Open Space, and a Secondary Zone, in which regulated development may occur. Within this Secondary Zone, the ordinance requires a more stringent bluff setback; limits the amount of impervious surface allowed based on bluff slope; encourages terrain- adaptive architecture and density clustering; and requires preservation of natural habitat or, within the Secondary Zone, mitigation of any unavoidable impacts. 2.2 STATE AGENCY REGULATORY FRAMEWORK Many agencies manage programs or regulate activities for local stormwater or water resource management. The following sections summarize those of primary relevance to urban local water management planning. Page | 2-2 REVIEW DRAFT Local Stormwater Management Plan, January 2018 2.2.1 Metropolitan Council The Metropolitan Council’s Water Resources Management Policy Plan includes a range of programs administered by various governmental and private agencies for management of water resources in the Metro area. Several of Met Council’s programs of interest to cities include the following: • Development of targeted watershed pollutant loads • Review of watershed and local water plans and comprehensive plans for consistency with metropolitan goals and objectives • Watershed Outlet Monitoring Program (WOMP) • Citizens’ Assisted Lake Monitoring Program (CAMP) • Environmental Information Management System • Regional Water Supply Plan for the Metropolitan Area 2.2.2 Minnesota Pollution Control Agency The MPCA administers several programs applicable to local storm water management planning. The MPCA monitors water quality, sets standards, and implements various controls. Following are two programs related to water quality. • The MPCA manages the National Pollutant Discharge Elimination System (NPDES) Phase II permitting for small municipal separate storm sewer systems (MS4s) and construction and industrial discharge permitting • The MPCA implements the Clean Water Act, which requires that states adopt water quality standards to protect waters of the state. The EPA and MPCA require preparation of Total Maximum Daily Load (TMDL) studies to identify the source of pollutants and plans for bringing the water resources into compliance. Lake Susan, Riley Lake, and Lotus Lake are impaired by excess nutrients; Bluff Creek is impaired by excess turbidity and does not meet state fish biology standards; and the Minnesota River does not meet turbidity standards. Several lakes and the Minnesota River do not meet mercury or PCB standards and have been listed on the MPCA’s 303(d) list of impaired waters. Section 3.2 discusses impaired waters in more detail. 2.2.3 Minnesota Department of Natural Resources The DNR manages and protects the state’s natural resources and operates numerous programs. The department provides technical assistance and information regarding best management practices, natural resource management, incorporating natural resource conservation in land use planning, and lakescaping. The Fisheries Division monitors and improves fisheries within the state. It also promotes fishing opportunities and provides grants to assist in the construction of fishing piers. The Ecological and Water Resources (EWR) Division focuses on an overarching vision of “Healthy Watersheds throughout Minnesota.” The EWR Division also provides the following services: • Maintains an inventory of public waters and operates permit programs for working in public waters or for appropriating public waters; • Oversees the state’s floodplain management program; • Provides local stewardship by coordinating the Mississippi River Critical Area and MNRAA programs and the Shoreland Management program; Page | 2-3 REVIEW DRAFT Local Stormwater Management Plan, January 2018 • Collects, analyzes, and provides ecological information, including:  Location and management of rare resources (endangered and threatened species, critical habitats, high quality natural communities);  Management of harmful exotic species, fish and wildlife diseases, and negative environmental impacts of human development;  Management and restoration of important ecological processes in river systems and key natural areas; and  Development of information about Minnesota's ecosystems and their significance to a sustainable quality of life. The DNR’s webpage at http://www.dnr.state.mn.us/lakefind/index.html is LakeFinder, a DNR supported tool that combines information from various DNR Divisions, as well as other state agencies, such as Minnesota Pollution Control Agency (water quality) and Minnesota Department of Health (fish consumption). This tool contains data for more than 4,500 lakes and rivers throughout Minnesota. The DNR also provides a variety of specialized programs oriented to property owners or neighborhood groups, such as the Aquatic Plant Management, Urban Fisheries and Fishing in the Neighborhood, Neighborhood Wilds, and Metro Greenways programs. 2.2.4 Minnesota Department of Health The Environmental Health Division of the MDH administers numerous programs of interest to local water management planning, including the following. • Drinking water protection • Wellhead protection • Lake and fish monitoring (in partnership with DNR/MPCA) • Environmental Health Services • Health risk assessment, site assessment, and consultation • Well management The City worked with the MDH to develop a Wellhead Protection Plan (WHPP). 2.2.5 Carver County and Carver SWCD Carver County provides a variety of programs throughout the county that relate to water resources management. County staff manage feedlot and septic system programs, and undertake lake and stream monitoring for water quality where that is not undertaken by a WMO. The County also provides Aquatic Invasive Species (AIS) monitoring and works to stop their spread. Common carp, curlyleaf pondweed, Eurasian water milfoil, and zebra mussels have been found in some of the lakes in Chanhassen. The County has in place an approved groundwater plan, and offers financial assistance to property owners to properly seal unused or abandoned wells. The Carver Soil and Water Conservation District (SWCD) provides outreach and assistance to both urban and agricultural land owners to help them protect and improve lakes, streams, and wetlands in the county. The SWCD promotes environmentally-friendly landscaping, offers financial assistance for shoreline restorations and other Best Management Practices (BMPs), and sponsors student and adult education programming. Page | 2-4 REVIEW DRAFT Local Stormwater Management Plan, January 2018 2.2.6 Watershed Districts and WMOs Watershed Management Organizations (WMOs) in the Metro area are required by statute to prepare and administer water management plans that establish watershed-wide goals, policies, and regulations. Local governments are also required by statute to prepare and administer local water management plans that establish local goals, policies, and regulations regarding those water resources management areas that are consistent with the watershed plans. Chanhassen has land within the boundaries of three watershed districts and one county WMO (see Figure 2.1): • Riley-Purgatory-Bluff Creek Watershed District • Minnehaha Creek Watershed District • Lower Minnesota River Watershed District • Carver County WMO Minnehaha Creek WD Local Plan Requirements. The MCWD updated its Watershed Management Plan in 2017. The City of Chanhassen has land in the Lake Virginia, Christmas Lake and Lake Minnetonka subwatersheds. In addition to the general requirements for Local Management Plans set forth in Minnesota Rules 8410, additional items must be addressed in the city’s Local Plan. One focus of the MCWD plan is fostering collaboration between the District and the cities to achieve mutual water and natural resource management goals. To that end the local plan should include: • Locations of publicly-owned lands such as parkland, right of way, or public facilities that may provide opportunities for collaborative stormwater management BMPs. • Lands that may potentially develop or redevelop within the planning timeframe. • Planned Infrastructure improvements or parks or open space acquisitions. • Potential to use development and redevelopment regulation to create incentives to protect water and other natural resources, including controls on removing mature trees. • Ways in which the city’s development review process encourages low impact development, and how the City ensures BMPs are adequately maintained post-construction. • A description of how the City will proactively and at least annually communicate and coordinate with the District on implementation efforts and opportunities for collaboration. A second focus is the MCWD LGU Coordination Plan. Through the Minnehaha Creek Watershed District (MCWD) 2018 Water Management Plan, LGU coordination is identified as an integral component of the Local Water Management Plan. A coordination plan is requested to define a set of protocols that supports ongoing communication and promotes value-added collaboration between the District and LGU. Through these communications, the District and LGU will coordinate programs and resource deployment and be best suited to identify areas of collaboration and partnership. The goal of the coordination plan is to create a framework to maintain awareness of needs and opportunities to co-plan water and land use early in the planning process, while also identifying LGU services and expectations of MCWD. Through the Local Water Plan, the District invites a partnership framework that fosters increased early coordination of land use and water resource management to achieve its water quality goals. Table 2.1. MCWD LGU Coordination Plan. Element When and How Department & Position Responsible i. Annual meeting to review LWMP implementation September annual meeting Water Resources Department - Water Resources Coordinator Page | 2-5 REVIEW DRAFT Local Stormwater Management Plan, January 2018 ii. Transmittal of annual NPDES MS4 report Available on MPCA website MPCA staff iii. Notice of and consult with the LGU on its land use, infrastructure, park and recreation and capital improvement planning efforts Annual meeting Planning Department - staff iv. Notice to the District on small area plans and other focused development or redevelopment actions Agency Review Request email transmittals will continue to be sent as applications and development proposals are received Planning Department - staff v. Notice of alterations within the LGU MS4 system for District maintenance of its watershed- wide hydrology and hydraulics model. September annual meeting Water Resources Department - Water Resources Coordinator vi.1. Notice of prospective development/redevelopment and receive proposed preliminary plats and development plans Agency Review Request email transmittals will cuntinue to be sent as applications and development proposals are received Planning Department - staff vi.2. Procedures by which the LGU ensures permit applicants are aware of permitting authority of both bodies Agency Review Request email transmittals will cuntinue to be sent as applications and development proposals are received Water Resources Department - Water Resources Coordinator vi.3.a. Pre application and permit reviews Agency Review Request email transmittals will cuntinue to be sent as applications and development proposals are received Planning Department - staff Page | 2-6 REVIEW DRAFT Local Stormwater Management Plan, January 2018 vi.3.b . Construction site inspection and compliance Annual email transmittal and meetings as needed Water Resources Department - Natural Resources Technician vi.3.c. Enforcement of water resource rules of MCWD and LGU Water Resource Permit Application email Water Resources Department - staff vi.3.d . Implementation of the Wetland Conservation Act where LGU is acting as WCA LGU WCA Notice emails Water Resources Department - staff vi.3.e . Implementation of District Rules where LGU is authority Water Resource Permit Application email Water Resources Department - staff Riley-Purgatory-Bluff Creek WD Requirements. The Riley-Purgatory-Bluff Creek Water Management Plan requires Local Water Plans (LWP) to meet the standards set forth in Minnesota Rules 8410. In addition, cities must submit an annual compliance report describing its annual achievements and progress towards meeting its goals. The LWP should also describe the self-evaluation process the city will use to assess whether those goals and actions should be revised. Lower Minnesota River WD Requirements. The Lower Minnesota River Third Water Management Plan requires Local Water Plans (LWP) to meet the standards set forth in Minnesota Rules 8410. The District will spot-check projects and programs for continued compliance with the approved LWP. Carver County WMO Requirements. The Carver County WMO Comprehensive Water Management Plan requires Local Water Plans (LWP) to meet the standards set forth in Minnesota Rules 8410. In addition, if the City desires to take on regulatory responsibility, the Plan should state so, and describe the local controls, policies, and procedures it will use to administer the permitting program, and demonstrate it has the technical capacity to do so. Page | 2-7 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Figure 2.1. Watershed Management Organizations in Chanhassen. Source: Minnesota Board of Water and Soil Districts. Page | 2-8 REVIEW DRAFT Local Stormwater Management Plan, January 2018 2.3 WETLAND CONSERVATION ACT The adminitrative responsibilities for the Wetland Conservation Act of 1991 (WCA) will continue to rest with the City. Wetland LGU responsibilities include: • Review and approve wetland delineations and determinations • Review and approve wetland exemption / no-loss applications • Review and approve wetland replacement plan applications • Coordinate Technical Evaluation Panel (TEP) meetings • Send Notices of Application and Decision to the TEP • Enforce wetland replacement monitoring requirements, review monitoring reports and certify replacement wetlands • Work with DNR and Carver County to enforce WCA violations 2.4 RELATIONSHIP TO NPDES STORMWATER PERMIT The City holds a permit from the MPCA to discharge stormwater into waters of the state through the MPCA’s NPDES General Stormwater Permit. The permit specifies that the City must develop, receive MPCA approval of, and implement a Stormwater Pollution Prevention Plan (SWPPP) that addresses a series of Best Management Practices (BMPs) for the following six minimum control measures established by the EPA: 1. Public education and outreach 2. Public participation/involvement 3. Illicit discharge detection and elimination 4. Construction site runoff control 5. Post-construction runoff control 6. Pollution prevention/good housekeeping during municipal operations The City’s previous SWPPP was approved in 2003 and amended in 2006. The State of Minnesota adopted a new NPDES General Stormwater Permit effective August 1, 2013, and the City submitted a permit reapplication in December 2013. Approval of the new permit and SWPPP was received in 2014. Activities and policies to be included in the SWPPP are prescribed in the General Permit, and include many of the actions and policies set forth in this LWMP. 2.5 WATER RESOURCE RELATED AGREEMENTS Water resource-related agreements, including Joint Powers Agreements, are typically struck between agencies or entities with overlapping regulatory interests or geographic similarities. The City has the following agreements: • Cooperative agreements with RPBCWD providing for property use, construction, maintenance and credit-sharing for Susan Park Pond project and Chanhassen High School stormwater reuse projects (2018), Cooperative agreement for the Lake Susan spent-lime water-quality improvement project (2015), Pursuing a cooperative agreement with RPBCWD for efficient joint administration of financial assurances secured for regulatory purposes (2018) Page | 2-9 REVIEW DRAFT Local Stormwater Management Plan, January 2018 • Memorandum of Agreement Between Carver County Land and Water Services and the City of Chanhassen Regarding Water Quality Education (MS4 Requirements), AIS and Targeted Monitoring Within City Boundaries. • Agreement Between the Carver Soil and Water Conservation District and the City of Chanhassen Relating to Urban Development Review and Site Inspection Services; Wetland Conservation Act; Individual Homeowner Natural Resource Issues. • 1996 was the last executed cooperative agreement with MCWD. The city and MCWD are working on an interim agreement for regulatory responsibility during the current Plan and ordinance process Page | 3-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 3.0 Assessment of Problems 3.1 HYDROLOGIC MODELING As part of this Plan, the HydroCAD hydrologic and hydraulic models for the city were updated to include the most recent watershed and basin information. There are fifteen individual HydroCAD models for the City. Issues raised by these models are discussed in Appendix A in the Subwatershed Summaries. The purpose of performing this modeling is for planning level assessments. The models were not calibrated to actual runoff and flows, and are not intended to be flood studies. The models were executed for the 100-year Atlas 14 precipitation event. Model output is quite lengthy and is available electronically. The output files are incorporated into this Plan as Appendix B. In, addition in 2003, the Minnehaha Creek Watershed District (MCWD) completed a multi-year Hydrologic, Hydraulic, and Pollutant Loading Study (HHPLS) to document the physical and biological characteristics of the watershed which includes projected runoff rates and volumes. 3.1.1 Areas of Known Flooding On June 19, 2014, 4.98 inches of rain fell in less than 24 hours at the National Weather Service monitoring site in Chanhassen, a nearly 25-year return interval event. Almost 4.5 inches of rain had fallen in the weeks preceding this storm event, and the ground was saturated and ponds and wetlands were still full. Localized flooding occurred at a number of locations. These included both ongoing problem areas as well as locations where no or minimal flooding had been observed before: • Market Boulevard north of MN T.H. 5 • Pipewood Curve • Kerber Boulevard between Saddlebrook Curve and Sierra Trail • Lake Riley Boulevard at Lyman Boulevard • Old 212 near Moon Valley Gravel Pit 3.2 IMPAIRED WATERS Waters that do not meet state water quality standards are listed as “Impaired” by the State of Minnesota will require additional analysis in the form of a Total Maximum Daily Load (TMDL) study. A TMDL is the maximum amount of a pollutant a waterbody can receive and still meet water quality standards. The TMDL study identifies the sources and magnitude of pollutant loading and establishes a numeric load reduction that must be made for each source. Table 3.1. Impaired Waters in Chanhassen. Lake/Stream DNR Lake # /Reach # Affected Use Pollutant Minnewashta 10-0009 Aquatic consumption Mercury FT1 Lucy 10-0007 Aquatic consumption Mercury FT1 Ann 10-0012 Aquatic consumption Mercury FT1 Susan 10-0013 Aquatic consumption/Aquatic recreation Mercury FT1 and Excess Nutrients Christmas 27-0137 Aquatic consumption Mercury FT1 Rice Marsh 10-0001 Aquatic recreation Excess Nutrients Page | 3-2 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Lotus 10-0006 Aquatic consumption/Aquatic recreation/Aquatic life Mercury FT1 , Excess Nutrients, and Fish Bioassessments Riley 10-0002 Aquatic consumption/Aquatic recreation/Aquatic life Mercury FT1 , Excess Nutrients, and Fish Bioassessments Bluff Creek 07020012-710 Aquatic life Fish IBI2, Turbidity Minnesota River 07020012-506 Aquatic consumption/Aquatic life Mercury FT1, Mercury WC1, PCB FT1, Turbidity Assumption Creek 07020012-582 Aquatic life Fish Bioassessments 1 "FT" means mercury or PCBs in fish tissue while “WC” means in the water column. 2 Index of Biotic Integrity. A measure of the quantity and quality of aquatic life. Source: MPCA 2018 draft 303(d) list of impaired waters. 3.3 TMDLS AND UAAS A TMDL was completed and approved in 2013 for the Bluff Creek biotic integrity and turbidity impairments. A statewide TMDL has been completed for the mercury impairments. The Riley-Purgatory- Bluff Creek Watershed District has completed Use Attainability Analyses (UAAs) for Lake Susan, Lake Lucy, and Lake Ann. The UAAs are scientific assessments of a water body’s physical, chemical, and biological condition. The studies include water quality assessments and recommendations for protective and/or remedial measures for the studied lakes and their directly tributary watersheds. The results of these UAAs provide the City guidelines for water resource improvement projects for these water bodies. Although the UAAs provide some background data that may be used towards preparation of a TMDL they do not meet MPCA criteria for a TMDL document. 3.3.1 Total Maximum Daily Load (TMDL) Studies Bluff Creek Turbidity and Fish Biota TMDL. Bluff Creek is listed by the Minnesota Pollution Control Agency (MPCA) as impaired for aquatic life use due to excess turbidity levels and low fish biota scores. The Turbidity and Fish Biota TMDL was approved in 2013. The Bluff Creek TMDL Biological Stressor Identification Report identified sediment, metals, habitat fragmentation, and flow as stressors to fish biota. Although the TMDL Report discusses all of these stressors, Wasteload Allocations (WLAs) were made only for total suspended solids (TSS), which represents a surrogate for both turbidity and fish biota. Chanhassen’s TSS Wasteload Allocation requires an 88 percent reduction in TSS contributed to the stream. Primary sources of sediment are stream bank and bluff erosion, as well as poorly vegetated ravines and gullies. An inventory and assessment of the Bluff Creek lower valley was completed to identify sites contributing excessive amounts of sediment to Bluff Creek and to determine feasible options for addressing sources of excess sediment delivery to the stream. Five sites were classified as Severe and are highest priority for stabilization and restoration, as was the stream just below the Hennepin County Regional Trail Corridor culvert crossing. The stream channel has downcut significantly below that culvert, and the culvert is being undermined, which could lead to future failure. This large drop also disrupts the connectivity of the creek, fragmenting habitat. Fish and other aquatic organisms are not able to migrate upstream of the culvert. Correction of the severe erosion and addition of a fish passage to reconnect the creek above and below the culvert were identified as priority implementation projects. Page | 3-3 REVIEW DRAFT Local Stormwater Management Plan, January 2018 South Metro Mississippi Total Suspended Solids TMDL. The South Metro Mississippi TSS TMDL was approved in 2016. This TMDL would require a 25 percent reduction in TSS load from MS4 communities such as Chanhassen. MS4s can demonstrate they meet this reduction by implementing a suite of BMPs that the MPCA will develop, or by showing that pollutant loads from their community meet or are less than the target load of 154 lbs/acre/year. This proof can be accomplished through water quality monitoring or modeling. Twin Cities Metropolitan Chloride TMDL. This study includes TMDLs for 37 of the 39 lakes and streams in the Metro Area that are impaired by excess chloride levels. The report also identifies high-risk waterbodies where monitoring data indicates that resource is approaching the impairment threshold. There are no chloride-impaired waters in Chanhassen, but the City is located within the tributary area of Minnehaha Creek, which is impaired by excess chloride. In addition, Bluff Creek has been classified as a high-risk waterbody. No specific load reductions were identified for Bluff Creek or any other waterbody in Chanhassen, but the TMDL suggests that all cities where high-risk resources are located consider developing a chloride management plan for those lakes and streams. In general, the TMDL suggests that regardless of whether or not runoff drains to an impaired or high-risk waterbody road authorities and other regulated entities take proactive steps to reduce the application of road salt for winter ice control as much as possible without compromising public safety. 3.3.2 UAAs and Other Studies RPBCWD has conducted several excellent UAAs and valuable studies for several water resources in the city. Three UAAs were updated in 2013. Short descriptions of findings are provided below. In addition A UAA for Rice Marsh Lake and Lake Riley was completed in 2016. Furthermore, the District implemented the Creek Restoration Action Strategy study which includes both Bluff and Riley Creeks. The Upper Riley Creek Sediment Source Assessment was also performed February 2017. The District also conducted a beyond Atlas 14 floodplain evaluation. More detail for each study and assessment is available from the Watershed District (http://www.rpbcwd.org/resources/). Lake Susan. Lake Susan is a shallow, 88 acre lake. Nearly all the surface area is less than 15 feet deep, shallow enough to be almost entirely dominated by rooted aquatic vegetation. Water quality is variable, some years approaching state water quality standards for shallow lakes and some years worse, but on average, the lake does not meet those standards. The Riley-Purgatory-Bluff Creek Management Plan classified Lake Susan as a deep lake, and water quality falls short of deep lake goals. Invasive aquatic vegetation has been an issue in Lake Susan for many years. Curly-leaf pondweed and Eurasian watermilfoil present the greatest threat to the lake. The University of Minnesota has been working to manage the rough fish population in the lake while also trying to reestablish native aquatic vegetation. Modeling completed for the UAA update estimated the amount of nutrient loading from the watershed and from internal and other sources. The North subwatershed, where there are developed areas with little or no water quality treatment, is the largest source of load to the lake. In the South subwatershed, a large wetland in Lake Susan Hills West Park is a likely exporter of phosphorus. Lake Susan also experiences high sediment loading. Total Phosphorus (TP) load to Lake Susan needs to be reduced by 182 pounds per year, or about 25 percent, to meet the shallow lake standard. The UAA identified some pond enhancements and a Page | 3-4 REVIEW DRAFT Local Stormwater Management Plan, January 2018 restoration of the identified wetland in Lake Susan Hills Park followed by a lake alum treatment to seal bottom sediments as potential actions to achieve that goal. Lake Lucy and Lake Ann. Water quality in Lake Lucy and Lake Ann has been fairly stable—neither degrading nor improving—in recent years. Lake Lucy currently meets the MPCA shallow lake water quality standards; however, excess phosphorus results in algal blooms and reduced water clarity that does not meet the RPBCWD’s goals. The annual phosphorus loading to Lake Lucy, based on the 2012 water year, indicates nearly half of the phosphorus load to the lake is from watershed runoff. Since the watershed to Lake Lucy has many ponds and wetlands that settle out particulates, much of the phosphorus that reaches Lake Lucy is in the soluble, or non-settleable, form that is readily available for algal uptake. The other primary contributions of phosphorus are internal sources, including release from the bottom sediments and from the dieback of Curlyleaf pondweed. While Lake Ann is currently meeting both the RPBCWD and MPCA water quality goals, the release of phosphorus from the lake sediments appears to lead to periodic blue-green algal blooms suspended below the water surface. During the 2012 water year, more than half of the phosphorus load to Lake Ann came from internal sources, primarily the release from the bottom sediments. Approximately 30 percent of the phosphorus load was from the Lake Ann watershed and discharge from Lake Lucy. Because the lakes currently meet state water quality standards, no specific phosphorus load reductions have been identified. However, to meet Watershed District goals, improve water clarity, and reduce the incidence and severity of algal blooming, the UAA identified a number of management actions. These include: implementing stormwater volume abstraction rules as portions of the watershed develop or redevelop; maximizing the treatment of watershed runoff such as iron-enhanced sand filter pond benches or the use of spent lime treatments to remove soluble phosphorus; and curly-leaf pondweed treatment in Lake Lucy and a whole-lake alum treatment in Lake Ann to help control internal phosphorus load. 3.4 PROBLEMS AND ISSUES Local water management problems, issues, and opportunities were identified by reviewing: • Statutory requirements for Local Water Management Plans • Lake inventory data • Lake UAAs and stream TMDLs • Input solicited from the public, the Environmental Commission, City staff, and state and local agency staff Once the problems and issues were identified staff identified and prioritized potential solutions to help the City of Chanhassen accomplish the goals of this Plan. This section presents those items evaluated to develop the proposed improvements and management studies summarized in the Implementation Plan. Table 3.2. Problems, issues, and opportunities. Water Quality Conditions • Lakes and streams are listed on the Clean Water Act Section 303(d) TMDL List of Impaired Waters. • Nonpoint source pollution reduction is necessary through maintenance practices such as street sweeping, sump manhole cleaning, and pond inspections. Page | 3-5 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Drainage and Flooding • Near stream gullies and escarpments should be addressed to control sediment deposition into surface waters and to protect property and infrastructure. There are ongoing opportunities to work with the WMOs to address gully erosion • Subsurface drainage causing icing on public streets and pedestrian pathways. Regulatory Requirements and Operational Policies • Atlas 14 updated precipitation frequency data is available for adoption. • Approaches such as Minimal Impact Development and Integrated Management Practices are available to reduce the public expenditures necessary to control runoff and protect and improve water quality. • The City’s approved NPDES permit and SWPPP requires ordinance revisions and operating program enhancements. • City goals, policies and ordinances to help protect natural resources may need review and refinement. Water-Based Recreation Needs • Water quality should be protected and improved to protect and enhance recreational opportunities. • Control of aquatic invasive species (AIS) is of growing concern. Maintenance Requirements • BMP maintenance and repair requirements have been identified during NPDES inspections, including restoration of storage capacity, repair of erosion, and prevention of future problems. • Street sweeping, sump manhole cleaning, and BMP inspections are necessary on an ongoing basis to help reduce nonpoint source pollutant loads. Education and Outreach • Education and outreach efforts could be expanded with a focus on targeted groups with new and expanded educational opportunities. Continuing to build and grow education opportunities with CCWMO to improve efficiency and reduce duplication of efforts Financial Resources • Financial resources are limited, requiring that projects be prioritized. Groundwater Protection • The LWMP should be coordinated with the Wellhead Protection Program so that policies that encourage infiltration and groundwater recharge are consistent with the policies to protect sensitive areas and groundwater supply recharge areas. • Seminary Fen is a rare calcareous fen and Assumption Creek is a trout stream, both of which are dependent on groundwater. Collaboration Opportunities • There are opportunities for collaboration with other agencies such as the WMOs, the county, and state agencies to leverage expertise and resources to finance and construct improvements. 3.4.1 2006 SWMP Priority Issues The City’s 2006 Surface Water Management Plan identified a number of potential projects and activities to address the then-current problems and issues and to help achieve that Plan’s goals. The highest priority were set forth in Table 45 of that Plan. These included seven structural practices, two ordinance updates, and some inspection and record keeping updates. Most of these high priority actions have been completed. Page | 4-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 4.0 Goals and Policies This section of the Plan outlines goals and policies guiding surface water management in the City of Chanhassen. A goal is a desired end toward which surface water management efforts are directed. Each goal has several corresponding policies that form the governing principals that will be followed to achieve the goals. Table 4.1 summarizes the six water resources management goals. The six goals and the corresponding policies are presented and discussed in more detail in the following pages. Table 4.1. Water resources management goals. Goal Number Goal Area Goal Statement 1 Water Quantity Promote abstraction through infiltration, reuse and other methods where practicable to do so to provide flood protection, ground water recharge and improved water quality. 2 Water Quality Achieve water quality standards in lakes, streams, and wetlands consistent with their designated uses and established classifications. 3 Wetlands Protect and rehabilitate wetlands to maintain or improve their function and value. 4 Groundwater Prevent contamination of the aquifers and promote groundwater recharge to maintain base flows in streams and wetlands. 5 Regulatory Responsibility Maintain primary responsibility for managing water resources at the local level and continue coordination and cooperation with other agencies and organizations. 6 Public Education and Participation Cultivate an environmentally literate public to promote an active community role in sustainable management of water resources. 4.1 GOALS AND POLICIES Water Quantity Development and changes in land use that result in additional impervious surface will result in a corresponding increase in stormwater runoff rates and volumes. This increase can cause flooding and erosion issues in the downstream system. It is important to control these increased runoff rates and volumes in order to ensure reduction of flooding in the downstream system and to control the potential effects of erosive flows on streams and waterways. Storm sewer design within the City of Chanhassen has been largely based upon the precipitation frequency estimates published in the Weather Bureau’s Technical Paper Number 40 (“TP 40”), Rainfall Frequency Atlas of the United States for Durations from 30 Minutes to 24 Hours and Return Periods from 1 to 100 years (Hershfield 1961). In April 2013 the National Oceanic and Atmospheric Administration (NOAA) published Atlas 14, Precipitation – Frequency Atlas of the United States, Volume 8 Version 2.0 to replace TP40. Atlas 14 used a much more robust data set over a much longer time span then was used for TP 40. While the 2-year average return interval and the 10-year average return interval remained relatively unchanged, the 100-year amount increased by 1.38 inches or 23% over the previous estimate Page | 4-2 REVIEW DRAFT Local Stormwater Management Plan, January 2018 (Table 4.2). The longer period of record used in developing Atlas 40 allowed for a more statistically accurate estimate of the less frequent events. Table 4.2. Comparison of TP-40 to Atlas 14 event depths. Publication 2-Year, 24 Hour 10-Year, 24 Hour 100-Year, 24 Hour TP 40 2.8” 4.2” 6.0” Atlas 14 2.87” 4.27” 7.38” Even though we now know to design to greater depths for certain events the City’s infrastructure has generally performed very well. However, there have been a few instances where the existing infrastructure was inadequate to accommodate the runoff volumes and/or rates. The City experienced large storm events in 2005, 2009, and 2014. The first 2005 large event occurred on September 3 and 4 and totaled approximately 5.55 inches of rainfall. The second occurred on October 4 and 5, 2005, and totaled approximately 4.61 inches of rainfall. From June 19 through June 20, 2014 the Chanhassen area received approximately 6.23 inches of rainfall. That June Chanhassen received 12.79 inches of rainfall after a wetter than average April and May. While significant damages did not occur from these events, a few areas were subject to high water levels and short-term flooding of streets. Lotus Lake, Lake Riley and Lake Minnewashta all experienced extended high water levels. Residents on these lakes experienced submerged docks and some shoreline erosion damage. Users were subject to the City’s emergency slow/no-wake restrictions for a period of about 15 days. Looking at opportunities to reduce the extent and/or duration of these high water levels is one of the key water quantity issues for the City. Because the lake discharges to Purgatory Creek, the solution is not a simple one. Coordination with RPBCWD, Lotus Lake area residents and the potentially impacted property owners downstream will be a critical step in developing a long term solution that does not push the problem downstream. Another issue that was discovered during the large event of 2005 is the lack of emergency overflows and flow paths in some areas of the City. Ultimately, the City’s focus is to operate and maintain the system so that it continues to function in the way it is intended, and provides flood protection for adjacent properties. During review of storm water management plans it is important for City staff to review the location of emergency overflow paths for storm water infrastructure in new developments. In recent years there has been a paradigm shift in water quantity management. The strategy today is to where possible manage stormwater where it falls, as exemplified by the State of Minnesota’s Minimal Impact Design Standards (MIDS). The emphasis is on reducing the volume of runoff discharged to downstream resources through abstraction, or the permanent retention of runoff on a site through structures and practices such as infiltration, evapotranspiration and capture and reuse. This abstraction can help mitigate the effects of larger storm events. Abstraction has other benefits as well, including minimizing and reducing the amount of pollution reaching our lakes, rivers and streams and recharging groundwater resources. A Flood Hazard Boundary Map dated January 1979 was completed for the City of Chanhassen, which identifies the entire City as a No Special Flood Hazard Area or Zone C. The Flood Insurance Study for Carver County is being updated as part of the FEMA Map Modernization Program. Updated maps are expected to be published in 2018. Maps are available from the FEMA website, www.fema.gov, available at City Hall or from the respective WMO. Page | 4-3 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Goal 1. Promote abstraction through infiltration, reuse and other methods where practicable to do so to provide flood protection, ground water recharge and improved water quality. Policy 1.1. Require all developments to construct stormwater best management practices, improve existing practices, and/or contribute to the construction or improvement of a regional facility for the purpose of reducing peak flows and runoff volume generated by the subject development. Policy 1.2. Require all development and redevelopment projects to demonstrate no net increase in the annual runoff water volume discharged from the site compared to pre-development conditions. Policy 1.3. Creative and innovative green site design and Best Management Practices, including infiltration systems and stormwater reuse, will be the preferred practice unless site limitations such as soil conditions, depth to groundwater, and safety preclude the use of these practices. Policy 1.4. Continue to stringently enforce lot coverage requirements set forth in City Code and development contracts. Policy 1.5. Establish and maintain overflow routes for ponds and low areas to provide relief during storm conditions that exceed design conditions. Policy 1.6. Where volume reduction is infeasible and detention ponds are necessary, regional ponding areas, as opposed to individual on-site ponds, should be used to reduce flooding, to control discharge rates, and to provide necessary storage volumes as indicated in this Plan. Policy 1.7. When areas are developed, redeveloped, and as infrastructure is replaced, stormwater facilities should be built and/or upgraded to provide or improve flood management and water quality. Policy 1.8. Encourage the development of new and improvement of existing ponds located upstream of priority water bodies. Policy 1.9. Permanently protect surface water impoundments and drainage systems by requiring the dedication of land and/or protective easements as required. Policy 1.10. Design, operate and maintain newly constructed storm water facilities in accordance with this Plan and NPDES MS4 permit requirements. Policy 1.11. Manage floodplain activities in accordance with all City, state, and federal regulations. Policy 1.12. Require building elevations to provide at least 3 feet of freeboard adjacent to ponding areas and floodplains for all development and redevelopment or when drainage facilities are constructed for an area. Policy 1.13. Preserve existing water storage below 100-year flood elevations. Policy 1.14. Continue management and development of public and private stormwater infrastructure as separate systems. Policy 1.15. The Water Resources Department manages public surface water resources identified in the LWMP and NPDES MS4 permit. Drainage, seeps, and springs on or between single family private parcels is not managed unless specifically identified in the LWMP, NPDES permit, or City ordinance. Page | 4-4 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Policy 1.16. Require development and redevelopment stormwater management incorporate the protection of existing and native plant and forest communities. Policy 1.17. Develop a tree preservation and native habitat protect credit consistent with the MCWD credit Water Quality The City of Chanhassen seeks to maintain and improve the water quality in its lakes, streams and wetlands to meet or better the State of Minnesota surface water quality standards for lakes and streams. There are many potential sources of water pollution that can negatively impact public safety and the enjoyment of these resources. Stormwater runoff can convey phosphorus, chloride, sediment, oils, debris, and bacteria to downstream waters, increasing algal blooms, reducing water clarity, and impacting fish and other aquatic communities. Excessive volumes and rates of stormwater runoff discharged into channels and streams can erode streambanks, causing additional water quality impacts. One of the City’s chief strategies for achieving its water quality goals is to require development and redevelopment to provide stormwater quality treatment through abstraction of 1.1 inch of runoff from impervious surfaces, or if that is infeasible, to provide treatment by some other means. Other strategies include better management of construction site erosion control measures, disconnecting and reducing the level of impervious cover, reducing the extent of managed lawn areas and replacing them with native vegetation, reducing stream bank erosion, and practicing good housekeeping practices, such as removing leaves from streets and storm drains and limiting the use of phosphorus fertilizers. Goal 2. Achieve water quality standards in lakes, streams, and wetlands consistent with their designated uses and established classifications. Policy 2.1. Manage each water body in the City’s surface water system to meet state, local, and federal water quality standards. Policy 2.2. Require that development and redevelopment projects demonstrate no net increase in the annual mass of total suspended solids (TSS), total phosphorous (TP) from the site compared to pre-development conditions. Policy 2.3. Require owners of development or redevelopment projects to provide on-site volume reduction or treatment or, where volume reduction is infeasible, contribute to the construction or improvement of a regional facility. Policy 2.4. Establish and implement on-going programs for property owners, local leaders, and those who live, work and play in the city designed to promote active stewardship of water resources. Develop and maintain a public education program to promote reduction of nutrient and sediment loading to water bodies. Policy 2.5. Continue to monitor long-term water quality trends on prioritized water bodies. Policy 2.6. Develop and implement a priority ranking scheme to focus management activities and capital improvements. Update priorities annually with a 5 year horizon. Policy 2.7. Evaluate the progress of the surface water management program on an annual basis in conjunction with the NPDES MS4 annual report. Policy 2.8. The City may require higher water quality standards in areas draining to an Impaired or Special Water. Page | 4-5 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Policy 2.9. The City will lead by example by following the standards of this Plan and implementing BMPs to provide pollution prevention and water quality treatment on City-initiated projects. Policy 2.10. All vegetative surfaces must utilize native vegetative cover, deep rooted low mow/no mow/turf alternatives, or approved landscape plantings. Landscape plantings include woody vegetation, annual and perennial forbs, ornamental grasses, fruit/vegetable gardens, and mulch Policy 2.11. Prohibit the discharge of foreign material into the storm water system. Such material should include, but not be limited to, waste oil, paint, grass clippings, leaves, commercial fertilizers, trash, construction debris, and miscellaneous chemicals. Policy 2.12. Continue implementing a spill response program for the City personnel to prevent discharge of spilled materials into the storm sewer system. Policy 2.13. Continue to implement the erosion and sediment control policies and the construction site inspection program to ensure reduction of water quality impacts from lack of erosion and sediment control. Policy 2.14. Protect shorelands and water resources. All properties are required to have native vegetated buffer adjacent to wetlands, storm ponds, and water resources. Non- conforming properties, and lots of record shall be brought into compliance when applying for permits or variances to improve the property. Non-conforming buffers should attempt to meet regulatory requirements whenever possible. The minimum non- conforming buffer width shall be 10’. Policy 2.15. Maintain a shoreland ordinance consistent with SNR requirements and recommendations to promote and encourage shoreland protection. Policy 2.16. Develop a Vegetation Management Plan. Ordinances and policies will be updated based on the goals and recommendations of the plan. Wetlands The City of Chanhassen serves as the Local Government Unit (LGU) for the purposes of administering the State of Minnesota’s Wetland Conservation Act (WCA). The City’s Wetland Protection Ordinance sets forth standards for the protection of wetlands, including wetland buffers, setbacks, and mitigation of unavoidable impacts. The policies and strategies set forth in this Plan will apply to all property within the City. Any wetland habitat will be subject to these management policies, as well as the rules and requirements of the Wetland Conservation Act. Goal 3. Protect and rehabilitate wetlands to maintain or improve their function and value. Policy 3.1. Continue to act as the responsible Local Government Unit (LGU) for administration of the Minnesota Wetland Conservation Act (WCA) for wetland impacts in the City. Policy 3.2. Maintain an official wetlands map that classifies wetlands by function and value and periodically update the wetland inventory data and the wetland management classifications. Policy 3.3. Update the City’s Wetland Protection Ordinance as necessary to maintain consistency with state and watershed district requirements. Page | 4-6 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Policy 3.4. Promote stewardship of wetlands on private property Policy 3.5. Ensure administrative costs are reasonable and sufficient to cover administration of WCA. Administrative fee will be an average of neighboring LGUs that administer the WCA Policy 3.6. Improve historic wetlands through pre-treatment and restoration activates when practical to do so, and in conjunction with street improvement and redevelopment projects Policy 3.7. Prioritize the protection the Seminary Fen and, unique natural resources during development and redevelopment Policy 3.8. Allow natural wetland systems to function within their existing and historic boundaries without interference or removal of non-invasive plant and wildlife species Policy 3.9. Impacts to, or created by, existing, non-invasive, vegetation and wildlife caused by local climate impact, natural behavior, or approved development are considered natural wetland functions Groundwater The City’s role in managing groundwater resources is limited in scope. There are actions the City can take to prevent or minimize impacts to groundwater quality. Groundwater and surface waters interact, and streams and wetlands and to a lesser extent lakes are reliant on groundwater contributions to maintain stream baseflow and wetland hydrology. The City’s primary strategies in groundwater management are to encourage infiltration of stormwater to help recharge surficial groundwater and to encourage water reuse and conservation to reduce consumption and protect the water supply. Goal 4. Prevent contamination of the aquifers and promote groundwater recharge to maintain base flows in streams and wetlands. Policy 4.1. Continue implementation of the City of Chanhassen Wellhead Protection Plan and implement Carver County Groundwater Plan 2016 Policy 4.2. Cooperate with the Minnesota Department of Health (MDH), Carver County, the Department of Natural Resources, and other agencies to periodically assess the vulnerability of groundwater used for drinking water supplies. Policy 4.3. Promote infiltration of stormwater and resulting groundwater recharge where it is feasible and does not pose a threat to groundwater quality, in accordance with the Minnesota Department of Health’s Evaluating Proposed Storm Water Infiltration Projects in Vulnerable Wellhead Protection Areas. Policy 4.4. Promote proper well abandonment. Regulatory Responsibility Page | 4-7 REVIEW DRAFT Local Stormwater Management Plan, January 2018 The City assumes the role of permitting all land alteration activities summarized in table 4.3 and enforcing the standards and policies set forth by the Plan. Riley Purgatory Bluff Creek Watershed District (RPBCWD) also reviews and permits on any proposed land alteration under their rules within the RPBCWD. Minnehaha Creek Watershed District (MCWD) permits for projects that include land alteration, floodplain alteration, dredging, shoreline and streambank improvement, and stream and lake crossings. Lower Minnesota River Watershed District reviews alterations to land within the Minnesota River valley. Carver County Water Management Organization reviews and permits land altering projects in the WMO. The City is the LGU for the Wetland Conservation Act, and assumes the role of permitting all wetland impacts. The Minnesota Department of Natural Resources has authority over issues relating to water and wetlands designated as State Protected Wetlands and Waters. The U.S. Army Corps of Engineers has authority relating to all wetlands identified by the U.S. Fish and Wildlife Service’s National Wetland Inventory. The Minnesota Department of Health has regulatory authority over groundwater issues within the City. Carver County has adopted a Groundwater Plan (2016). Erosion control falls under several jurisdictions including the City, the watershed districts, and the MPCA. The MPCA also has regulatory authority over individual septic systems within the City limits. Table 4.3. Agencies with regulatory authority. Rule Chanhassen CCWMO LMnRWD MCWD RPBCWD Dredging And Sediment Removal No No NA Yes Yes Erosion Prevention & Sediment Control Yes No NA No Yes Floodplain Management Yes No NA Yes Yes Shoreline & Streambank Stabilization No No NA Yes Yes Stormwater Management Yes No NA No Yes Water Appropriations No No NA No Yes Waterbody Crossings No No NA Yes Yes Wetland & Stream Buffers Yes No NA No Yes MOU = Memorandum of Understanding Goal 5. Maintain primary responsibility for managing water resources at the local level and continue coordination and cooperation with other agencies and organizations. Policy 5.1. Adopt policies consistent with the most stringent local watershed authorities’ management plans to the extent practicable. Policy 5.2. Enter into memorandum of understanding where maintaining consistency with local watershed authorities’ plans would otherwise be counter to City’s overall goals. Policy 5.3. This plan and all subsequent amendments will be consistent with the plans of regulatory agencies. Policy 5.4. This plan will be amended as necessary to remain current. Policy 5.5. Coordinate projects and information with government agencies; i.e. MnDOT, Carver and Hennepin Counties, Department of Natural Resources, Watershed Districts, and Water Management Organizations. Public Education and Participation Page | 4-8 REVIEW DRAFT Local Stormwater Management Plan, January 2018 The public education and participation goals and policies recognize that people want to be involved in decisions that affect the water resources in their community. The City seeks to create opportunities for the public to participate in information gathering and decision-making. Public education and participation activities are also requirements of the National Pollutant Discharge Elimination System (NPDES) Permit. Goal 6. Cultivate an environmentally literate public to promote an active community role in sustainable management of water resources. Policy 6.1. The City will continue to provide opportunities for public involvement (e.g., neighborhood meetings, public hearings, mailed notices, etc.) for significant water resource decisions or projects. Policy 6.2. The City will coordinate and consult with appropriate City commissions and committees on surface water issues. Policy 6.3. The City will communicate with lake associations and other appropriate civic and citizen groups. Policy 6.4. The City will develop an Education and Outreach Plan, actively implement the current educational programs, and work to develop and implement new education programs and activities related to water resources. Policy 6.5. The City will cooperate with other agencies and encourage establishment of model interpretative sites for public education like the stormwater practices at the Landscape Arboretum. Policy 6.6. Continue to remain in compliance with the NPDES Phase II MS4 permit with respect to public education and involvement. Policy 6.7. Promote the installation of low mow/no mow turf, turf alternatives, and restoration of native vegetation on all public and private property within the city. Update ordinances as needed to reflect policy Policy 6.8. Promote safety education in an effort to promote the co-existence of commercial and recreational navigation on the Lower Minnesota River Policy 6.9. Prioritize partnership opportunities with CCWMO to improve and expand education and outreach programs and goals Page | 5-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 5.0 Implementation Plan The City of Chanhassen will implement both management programs and capital projects to achieve the goals and policies set forth in this Plan. These actions address the problems and issues identified here as well as NPDES and TMDL requirements and agency and watershed expectations. The following sections describe those actions, which as summarized in Tables 5.2 and 5.3. Each year the City will review progress and resources, and these implementation actions may be reviewed and updated based on changing conditions or requirements. If necessary, this Plan may be amended in accordance with the procedure set forth in Section 6.0. 5.1 PERMITTING AND ENFORCEMENT Numerous local, state, and federal agencies regulate water resources. However, the primary regulators are the City of Chanhassen; the four watershed management organizations within Chanhassen; the Minnesota Department of Natural Resources (MDNR); and the Minnesota Pollution Control Agency (MPCA). These regulations are discussed in Section 2.0 Regulatory Framework. 5.1.1 Current Ordinances and Potential Revisions The City of Chanhassen has enacted numerous policies and ordinances regulating and managing water resources. These are described in Section 2.1 above. In its NPDES stormwater permit application, the City agreed to within one year or permit approval adopt ordinance revisions as necessary to meet permit requirements. It is the City’s desire to reduce administrative and regulatory burden while staying protective of our water and natural resources. The City intends to exercise sole regulatory authority over development and redevelopment projects requiring stormwater, wetland, floodplain, or erosion control review and approval, and will work with the WMOs to adopt Memoranda of Understanding (MOU). The City will continue to ensure submission of applications for permits under those WMO rules, and all variances, for which the city does not have authority are submitted to the WMOs for review and approval. This process will be assured through the implementation of a new water resource permit process developed in collaboration with the WMOs. In addition to amending its official controls the City will follow the framework and scope for each WMO required to adopt an MOU. Specifically, RPBCWD requires the MOU details the scope of each entity’s exercise of regulatory authority (i.e., who will regulate what) for presentation to the City Council and Board of Managers for approval. The MOU also will establish a process and schedule for exchanging progress reports, the city’s submission of permitting information to the District and regular meeting to ensure water-resources management concerns and projects are pursued via the most effective and cost- efficient route possible. The MOU also will provide procedures and a timeline for the District’s reengagement of all of its regulatory authority if the city is found not to have adopted the necessary official controls or implemented a complete and effective regulatory program. Additional regulatory revisions are necessary to bring the ordinances into conformance with the requirements of the watershed districts in the city (Table 5.1). The city will undertake these ordinance revisions within six months after adoption of this Plan. It is expected that where the requirements of the Page | 5-2 REVIEW DRAFT Local Stormwater Management Plan, January 2018 individual watershed districts differ, the City will adopt the most stringent of the requirements for application citywide. The most stringent requirements the City will adopt are highlighted in Table 5.1. The city will work with the WMOs as it considers regulatory revisions and permit review processes and procedures to ensure that they are consistent with WMO requirements. The city commits to updating its ordinances as necessary and required within one year after receiving notification that a WMO has significantly revised its rules and standards. Page | 5-3 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Table 5.1. Regulatory requirements of various agencies compared to Chanhassen current ordinances. Note: Highlight indicates the standards the City expects to adopt following approval of the Plan. Standard Chanhassen NPDES General Permit NPDES Construction Permit Carver County WMO Plan: October 26, 2010 Rules: 10/15/16 Riley- Purgatory –Bluff Cr WD Plan: January 26, 2011 Rules: Effective 1/1/15 Lower Minnesota River WD Plan: December 14, 2011 Rules: Cities; new standards pending 9/17 Minnehaha Creek WD Plan: July 5, 2007 Rules: 6/6/14 Threshold: single family residential new development N/A Disturb >1 acre of land, or part of common development >1 acre Disturb >1 acre of land, or part of common development >1 acre Create 1> impervious or >10,000 sf in sensitive areas a. Land-disturbing activities that will disturb 50 cubic yards or more of earth; b. Land-disturbing activities that will disturb 5,000 square feet or more of surface area or vegetation; or c. Subdivision of a parcel into three or more residential lots. Disturb >1 acre of land Pending Draft: within the HVRA Overlay, create >10,000 sq ft new impervious area ≥1 acre where more than 20% of site is or will be impervious Threshold: non-residential new development N/A Disturb >1 acre of land, or part of common development >1 acre Disturb >1 acre of land, or part of common development >1 acre Create 1> impervious or >10,000 sf in sensitive areas a. Land-disturbing activities that will disturb 50 cubic yards or more of earth; b. Land-disturbing activities that will disturb 5,000 square feet or more of surface area or vegetation Disturb >1 acre of land Pending Draft: within the HVRA Overlay, create >10,000 sq ft new impervious area ≥1 acre where more than 20% of site is or will be impervious Threshold: single family residential redevelopment N/A Disturb >1 acre of land, or part of common development >1 acre Disturb >1 acre of land, or part of common development >1 acre Additions: Create 1> acre impervious or >10,000 sf in sensitive areas, for new impervious Tear downs: Create >1 acre impervious or >10,000 sf in sensitive areas, for all impervious created by project; Redevelopments that reduce imperviousness by 10% are exempt from rate, volume, and WQ reqs Same as above, except where redevelopment of more than 50% of site or that increases impervious by more than 50%, applies to entire site; less than 50% of site, applies only to disturbed area/new impervious Disturb >1 acre of land Pending Draft: within the HVRA Overlay, create >10,000 sq ft new impervious area ≤1 acre; requirements vary by size, change in imperviousness, and % disturbance Threshold: non-residential redevelopment N/A Disturb >1 acre of land, or part of common development >1 acre Disturb >1 acre of land, or part of common development >1 acre Additions: Create 1> acre impervious or >10,000 sf in sensitive areas, for new impervious Tear downs: Create >1 acre impervious or >10,000 sf in sensitive areas, for all impervious created by project; Redevelopments that reduce imperviousness by 10% are exempt from rate, volume, and WQ reqs Same as above, except where redevelopment of more than 50% of site or that increases impervious by more than 50%, applies to entire site; less than 50% of site, applies only to disturbed area/new impervious Disturb >1 acre of land Pending Draft: within the HVRA Overlay, create >10,000 sq ft new impervious area >1 acre; requirements vary of < or > 40% site disturbance Page | 5-4 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Standard Chanhassen NPDES General Permit NPDES Construction Permit Carver County WMO Plan: October 26, 2010 Rules: 10/15/16 Riley- Purgatory –Bluff Cr WD Plan: January 26, 2011 Rules: Effective 1/1/15 Lower Minnesota River WD Plan: December 14, 2011 Rules: Cities; new standards pending 9/17 Minnehaha Creek WD Plan: July 5, 2007 Rules: 6/6/14 Threshold: grading and erosion control Disturb>5,000 sf, excavate or place >50 cy fill, any disturbance on “highly erodible” land or land in the Bluff Creek Overlay District, or with any earthwork permit Disturb >1 acre of land, or part of common development >1 acre Disturb >1 acre of land, or part of common development >1 acre >1 acre construction activity; <1 acres in sensitive areas or part of common development a. Land-disturbing activities that will disturb 50 cubic yards or more of earth, b. Land-disturbing activities that will disturb 5,000 square feet or more of surface area or vegetation As required by the General Permit for Construction Pending Draft: Disturb >1 acre of land, or within the HVRA Overlay District, disturb more than 5,000 sq feet or disturb 50 cubic yards or more of earth, All land disturbing activity except agriculture and disturbances of less than 5,000 sq ft moving less than 50 cu yd Water quality: new development Whichever is most restrictive: meet NPDES construction permit; NURP criteria (90% TSS and 60% TP; or special requirements for discharges to “Preserve” waters No net increase in TP or TSS annual load Wet pond with 1,800 cu ft dead storage per contributing acre and live storage of 1” of runoff from new impervious surface 90% removal of TP and TSS from the 1.05” event Provide for at least 60% removal of TP and 90% removal of TSS from all runoff from site Treatment as required by the General Permit for Construction; NURP pond designs apply Draft pending: No net increase in TP or TSS. Within HVRA 60% decrease in TP and 80% TSS from predevelopment condition No net increase in TP, except where land use was row crop/feedlot, must be modeled as if meadow Water quality: redevelopment Whichever is most restrictive: meet NPDES construction permit; NURP criteria (90% TSS and 60% TP; or special requirements for discharges to “Preserve” waters Decrease in TP and TSS annual load Wet pond with 1,800 cu ft dead storage per contributing acre and live storage of 1” of runoff from new impervious surface 90% removal of TP and TSS from the 1.05” event Provide for at least 60% removal of TP and 90% removal of TSS from all runoff from site Treatment as required by the General Permit for Construction; NURP pond designs apply Draft pending: No net increase in TP or TSS. Within HVRA decrease in TP and TSS from predevelopment condition Varies based on size and whether impervious is increased or decreased Rate control No increase over 1- or 2-, 10-, and 100-year rates No specific requirement No more than 5.66 cfs per acre pond surface area No increase over 2-, 10-, and 100-year rates and 10-day snowmelt; Extended detention for sites discharging directly to streams: 50% reduction of 2- year discharge from existing No increase over 2-, 10-, and 100-year Atlas 14 Nested Distribution rates No increase over 1-or 2-, 10-, or 100-year rates Pending draft: using Atlas 14 Nested Distribution rates No increase over 1-, 10-, and 100-year rates, except where land use was row crop/feedlot, must be modeled as if meadow Infiltration: new development Discharging to special waters: Infiltration of excess volume over pre-development volume, up to 2-yr, 24-hour event Any grading permit: Soil amendment ripped into existing soil materials to a depth of ten inches on the site No net increase in annual runoff volume If more than 1 acre of new impervious, infiltrate/abstract 1” from new impervious surface Abstraction of 1.0” runoff from impervious surface (0.5” if site is restricted) 1.1” abstraction from all impervious surface 0.5” runoff from new impervious surface Pending Draft: sites that create >1 acre new impervious abstract 1” from all impervious. Within HVRA, sites that create >10,000 sf new impervious abstract 1.1” 1” from impervious surface. Where 1” infeasible, must do at least 0.5” plus additional TP reduction Page | 5-5 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Standard Chanhassen NPDES General Permit NPDES Construction Permit Carver County WMO Plan: October 26, 2010 Rules: 10/15/16 Riley- Purgatory –Bluff Cr WD Plan: January 26, 2011 Rules: Effective 1/1/15 Lower Minnesota River WD Plan: December 14, 2011 Rules: Cities; new standards pending 9/17 Minnehaha Creek WD Plan: July 5, 2007 Rules: 6/6/14 Infiltration: redevelopment Discharging to special waters: Infiltration of excess volume over pre-development volume, up to 2-yr, 24-hour event Any grading permit: Soil amendment ripped into existing soil materials to a depth of ten inches on the site Decrease in annual runoff volume If more than 1 acre of new impervious, infiltrate/abstract 1” from new impervious surface Abstraction of 1” runoff from impervious surface 1.1” abstraction from all impervious surface 0.5” runoff from new impervious surface Pending Draft: sites that create >1 acre new impervious abstract 1” from all impervious. Within HVRA, sites that create >10,000 sf new impervious abstract 1.1” 1” from impervious surface. Where 1” infeasible, must do at least 0.5” plus additional TP reduction Wetland buffer ** 16.5 to 50 feet from wetlands depending on mgmt. class; 100 feet from special water No specific requirement 100 feet from a special water Minimum 20 feet, adjusted based on slope, whether runoff s directed to the buffer or if the wetland is ranked “high,” to a maximum 50 feet Avg width 20 to 80 feet from wetlands, depending on mgmt. class; 50 feet from a water basin; 50 feet from the thalweg of any watercourse in a High Risk Erosion Area, 50 feet from the centerline of a public waters watercourse a. <2 acres, 25’ minimum; b. .2 acres, 25’ minimum, average 50’ 16 to 75 feet, depending on wetland mgmt class Linear projects No specific requirement Disturb >1 acre of land; may be excepted from some or all infiltration requirement if lack sufficient right of way Disturb >1 acre of land Projects adding 1 acre or more of impervious (10,000 sf in sensitive areas), for new impervious created by project. Reconstructs that reduce imperviousness by 10% are exempt from rate, volume, and WQ reqs If project constructs more than 5,000 square feet of impervious, and creates ≥1 acre new or fully reconstructed impervious surface. Applies only to all new and reconstructed impervious surface. No specific requirement Projects creating >10,000 sq ft new impervious surface Bluff requirements No removal of vegetation and no new impervious in the Bluff Impact Zone (20’ from top of bluff); new structure setback 30 ft top of bluff, SSTS setback 50 ft No specific requirement No specific requirement Unknown Unknown No removal of vegetation in the Bluff Impact Zone and Bluff Face; new structure setback 30 ft top of bluff, SSTS setback 50 ft. Pending Draft: establishes High Value Resources Area (HVRA) Overlay District No specific requirement TP-40 or Atlas 14 TP-40 No specific requirement No specific requirement Atlas 14 Atlas 14 Cities Pending Draft: Atlas 14 Will adopt Atlas 14 as part of current rule revision ** No single WMO had the most stringent wetland buffers. The City will adopt the most stringent buffers across all WMOs as follows: Preserve management class = 80’ base buffer width and 67’ minimum, Manage 1 = 60’ base buffer width and 34’ minimum, Manage 2 = 40’ base buffer width and 24’ minimum, Manage 3 = 20’ base buffer width and 16’ minimum. Seminary Fen = 100’ base buffer width and 50’ minimum. Base buffer widths will be an average for all management classes. Principal structure setback will be 20’ for all management classes. Page | 5-6 REVIEW DRAFT Local Stormwater Management Plan, January 2018 5.1.2 NPDES Permit Implementation Requirements Under the requirements of NPDES Phase II, the City has implemented a Storm Water Pollution Prevention Program (SWPPP). Best Management Practices (BMPs) identified in the MPCA-approved SWPPP are implemented on an ongoing basis. Annual activities are detailed in the city’s Annual Report and reviewed at an annual public meeting prior to submittal of the annual report to the MPCA. More information about the SWPPP can be found in the Surface Water Resources Section of the City’s website (http://www.ci.chanhassen.mn.us/index.aspx?nid=1085.) The City’s Engineering/GIS Department maintains databases and GIS mapping of stormwater and wetland information for both public and private systems. These sources summarize pertinent management information about BMPs, wetlands, and other water resources in the city including BMP location, type, and responsible party. The information provided for stormwater ponding systems includes physical condition, maintenance histories, pond elevations, watershed acreages, basin sizes, and other as-built information where available. This information is being collected, updated, and integrated into asset management software on an ongoing basis as part of the NPDES Phase II permit requirements and provides data and direction to prioritize maintenance. An Inventory of real property owned by the City, and maps of public and private stormwater systems are included in Appendix A. The City os committed to complete the MCWD conveyance map and inventory discussion within 2 years of Plan adoption. The State’s General Permit was reissued effective August 1, 2013, and the City has been issued a reauthorized permit. The City’s SWPPP application identified a number of BMPs that the City needs to initiate or update, such as developing certain programs, expanding record keeping, and establishing new or modified policies. The new permit also requires revisions to the city’s ordinances requiring stormwater management, namely adopting more stringent standards to reduce phosphorus and total suspended sediment in stormwater runoff, limiting new volumes of stormwater runoff, public education and staff training, illicit discharge, BMP inspection and maintenance for both public and private stormwater BMPs. 5.2 IMPLEMENTATION PROGRAMS AND PROJECTS 5.2.1 Education and Outreach Program The City recognizes that a critical element in reaching the long-term goals developed for this LWMP is public education. An education and outreach plan will be developed to achieve these goals and meet requirements of the NPDES permit. This plan will incorporate opportunities to collaborate with the four WMOs and other organizations to maximize existing local education resources and expertise. The City also uses various media outlets such as local news articles, City newsletters, Facebook, and the City of Chanhassen website to educate citizens on the basics of our stormwater system, provide updates on current actions the City is taking to monitor or improve stormwater systems, and inform residents about opportunities to improve local water bodies through workshops, volunteer opportunities, or rebates. City events and festivals provide additional opportunities for education. High priority topics are periodically identified for emphasis, including topics such as: • Water resource management • Pollinators and Wildlife habitat Page | 5-7 REVIEW DRAFT Local Stormwater Management Plan, January 2018 • Groundwater protection • Low impact and green design such as pervious pavers • Wetlands • Pet waste control • Native plant establishment • Leaf and grass clipping management • Wetland, lake and pond buffers • Lawn chemical and phosphorus fertilizer usage Adults and youth can also participate in outreach activities such as: the storm drain labelling program; Wetland Health Evaluation Program (WHEP); park cleanup events; Citizen Assisted Lake Monitoring program (CAMP). The City Council relies on a Planning Commission and Environmental Commission to provide recommendations and direction on water resource topics. The City recognizes the important value of coordination and collaboration with other agencies, and will continue to find opportunities to improve these relationships and will utilize collaborative resources such as WaterShed Partners, Blue Thumb, Let’s Keep it Clean, the Minnesota Stormwater Coalition, and the CCWMO to maximize resources and message impacts. LMRWD offers a Cost Share Incentive Program and Water Quality Restoration Program that the city will promote. Education programming includes training for City staff, local leaders and decision makers on various water resources management topics. 5.2.2 Monitoring Program The city will meet with each WMO staff annually to review opportunities to coordinate data collection and assessment to improve informed decision making. In addition the city continues to operate the following monitoring programs: Citizen Assisted Monitoring Program (CAMP). The City of Chanhassen partners with the Metropolitan Council to participate in its Citizen Assisted Monitoring Program (CAMP). Volunteers collect surface water samples from Chanhassen lakes. The samples are then sent to the Metropolitan Council to be analyzed for the following: • Total phosphorus (TP) • Total Kjeldahl nitrogen (TKN) • Chlorophyll-a (CLA) Volunteers also gather the following information: • Measure surface water transparency using a Secchi disc • Record water temperature • Record perceptions such as weather conditions Samples are taken bi-weekly from April through October (14 sampling dates) and are sampled at the lake's deepest open-water location. The CAMP currently monitors the following lakes: • Lake Lucy • Lake Minnewashta • Lake Riley • Lake St. Joe • Lake Susan Page | 5-8 REVIEW DRAFT Local Stormwater Management Plan, January 2018 • Lotus Lake Stream Health Evaluation Program (SHEP). This program gives citizens professional training on how to evaluate a stream health based on physical assessments and bio-monitoring. Citizens evaluate physical characteristics of stream sites, collect and identify macro-invertebrates. Citizens get hands on opportunities to learn about stream ecosystems and assist Carver County in water quality monitoring. Aquatic Invasive Species (AIS). AIS monitoring is coordinated through a partnership program with CCWMO, RPBCWD, and local lake associations 5.2.3 Operations and Maintenance The City of Chanhassen follows Best Management Practices (BMPs) in operating and maintaining its infrastructure and facilities, consistent with its NPDES permit and this Plan. The City’s approach to ensuring maintenance of private stormwater infrastructure for development and redevelopment includes: • Stormwater BMPs are required to be placed into permanent easements recorded against the property • Public BMPs are required to be placed in drainage and utility easements recorded on the plat • All BMPs are required to have Operation and Maintenance Plans detailing maintenance responsibilities, and recorded against the property • All BMPs are required to have Inspection Forms detailing inspection activities and including identification of responsible party performing the maintenance and submitting annual inspection reports • Authorization for the City to access BMPs for inspection and to perform maintenance if property owner fails to meet requirements. Property owner is responsible for all maintenance costs incurred by the City • Wetlands and water resources are to be placed into outlots during development or redevelopment. • Recommends BMPs receiving public or community stormwater not be placed on single family residential lots during development or redevelopment • The City does not have the capacity to take on private stormwater BMP maintenance, therefore, it is the responsibility of the property owner to operate, maintain, and inspect City staff and projects serve as a model for good housekeeping practices. Some specific Best Management Practices integrated into daily activities include: Street Sweeping. The City sweeps all streets at least annually, and sweeps more frequently in certain key areas. Staff continuously reviews street sweeping practices to assure they are consistent with the latest management recommendations. Some TMDLs and UAAs have identified key areas where enhanced sweeping can provide additional nutrient and sediment removal to protect or improve lake and stream water quality. Snow and Ice Control. Street maintenance staff use the recently-developed Winter Maintenance Assessment Tool from the MPCA to evaluate and enhance snow and ice control practices optimizing the application of road salt - sodium chloride – to limit chloride loading to surface waters. Page | 5-9 REVIEW DRAFT Local Stormwater Management Plan, January 2018 BMP Inspections and Maintenance. In accordance with its NPDES permit, stormwater ponds are inspected at least every five years for sediment accumulation and maintenance needs. The City’s BMP Inspection and Maintenance Program ensures public and private stormwater infrastructure is inspected and maintained to meet regulatory requirements. Private stormwater BMPs on sites over an acre that discharge into the City’s system submit annual inspection reports, and are inspected by City staff once every three years. The City utilizes design standard details setting forth the City’s BMP and infrastructure design and maintenance requirements. The City is developing its Stormwater Inventory Inspection and Maintenance Plan. This Plan includes both activities necessary to meet NPDES Phase II permit obligations as well as general operations and maintenance activities. These include: • BMP operation and maintenance plans • Vegetation Management Plan • Facilities Maintenance Plans • Street and parking lot sweeping • Chloride management • Catch basin and sump inspection, cleaning, and repair. • Sump catch basin inspection, cleaning, and repair. • Sediment removal schedules. • Televising, jetting, and repair of storm sewers and culverts. • Treatment effectiveness evaluation. • Illicit discharge detection and elimination plan As a requirement of its NPDES permit, the City must establish Enforcement Response Procedures and Plan Review Checklists which will be added as Appendix D and E within 6 months of Plan adoption. The City of Chanhassen also maintains up to date GIS shapefiles containing information about water bodies, stormwater facilities, and stormwater infrastructure. Opportunistic BMPs. Where possible, Chanhassen will incorporate BMPs into its street and utility infrastructure to protect and preserve its water and natural resources. 5.2.4 Capital Improvement Program The Implementation Plan in Tables 5.2 and 5.3 details a Capital Improvement Program (CIP) of projects. The Use Attainability Analyses (UAAs) and Total Maximum Daily Load (TMDL) studies have identified potential actions that could help protect and improve the water quality in and enjoyment of studied waterbodies, and some of those actions are included. In addition, every year the City considers updates to the City’s CIP not only for improvements to the storm drainage system but also the transportation system, water and sanitary sewer utilities, and park facilities. Drainage system maintenance and condition assessments have identified a number of pond maintenance and other projects such as dredging to restore or enhance the effectiveness of those features, and priority actions have been included in the CIP. Road, utility, and park projects are also an opportunity to incorporate water quality and quantity BMPs. These projects are intended to maximize the amount of nutrient and sediment removal from stormwater prior to being discharged into the lakes, streams, and wetlands in the community. Concept- Page | 5-10 REVIEW DRAFT Local Stormwater Management Plan, January 2018 level planning estimates the cost of potential BMPs for inclusion in the CIP. Specific BMP selection and design are undertaken during project design. The CIP also includes collaborative projects with the watershed districts. The City is open to working together with the districts to identify additional projects or opportunities, including working with the Minnehaha Creek district in advancing its Balanced Urban Ecology policy. The City also intends to prepare a Natural Resource Management Plan to identify, prioritize, and recommend restoration and management strategies for all public natural areas, and will consult with the various WMOs to obtain their input and feedback. This CIP is reviewed and updated annually, and additional projects may be added as more or better information is available or as opportunities arise. 5.3 IMPLEMENTATION PLAN FUNDING The City will fund the Implementation Program (IP) through a combination of sources. The primary source of funds will be Stormwater Utility Fees. The types of activities included in the IP can be categorized as operations and maintenance; programs and special studies; and capital projects. Operations and maintenance and most of the proposed programs and special studies would be funded by the Stormwater Utility, the General Fund, or the Water Surcharge Fund. For capital projects, other sources of funding may be available to supplement Stormwater Utility Funds: matching funds from the watershed districts, contributions from other agencies for cooperative projects, or grant funds. Page | 5-11 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Table 5.2. Chanhassen LWMP Implementation Plan 2018-2027. Program/Project Description Cost Year Funding Source* PROGRAMS AND ADMINISTRATION Administration Maintain and update modeling tools Update the city’s integrated stormwater management models and tools and develop new tools and linkages as necessary to manage stormwater and water quality. $30,000 As needed SWUF, GF Implement SWPPP Undertake operations and maintenance activities in accordance with the City’s approved SWPPP and NPDES permit including Vegetation Management, BMP Inspection and Maintenance, and IDDE programs $430,000 Annual SWUF Implement ordinances Implement stormwater management, shoreland, floodplain, and wetland management ordinances. Implement permit program to administer standards and ordinances $95,000 Annual SWUF, permit fees Revise and update ordinances Update ordinances as necessary, based on new MOU, WMO or NPDES permit requirements, evolving standards and new best management practices. $5,000 As needed SWUF CIP Updates Update the CIP annually $5,000 Annual SWUF WCA Administration Continue to act as LGU for administration of WCA for wetlands in the city. $40,000 Annual Permit fees Education and Outreach General education and outreach programming Both individually and with the city’s partners and using a variety of delivery mechanisms to cultivate an environmentally literate public to promote an active community role in sustainable management of water resources. $30,000 Annual SWUF, WMO, CWF Education and Outreach Plan Complete the Education and Outreach Plan to assist with targeting educational needs, audience, funding priorities, partnership opportunities and annual program assessment $5,000 2020 SWUF Monitoring Water quality and AIS monitoring Continue CAMP and AIS support partnership monitoring programs. Develop additional citizen monitoring opportunities that prioritize resident and water resource concerns or fill gaps in existing programs. $20,000 Annual SWUF, WMO, CWF TOTAL: Programs and Administration $660,000 CAPITAL IMPROVEMENT PROJECTS Improvement Projects Downtown Water Reuse Project Integrate reuse irrigation from Hwy 5 storm ponds into downtown vision and update project $350,000 2020 SWUF Lake Susan Park Water Re-use Project Partner with RPBCWD to install pump and treatment device to withdraw water from Lake Susan Pond to irrigate Lake Susan Park. $333,000 2018 WMO, CWF, SWUF Chanhassen HS Water Re-use Project Partner with RPBCWD to install pump and treatment device to withdraw water from a pond on the property to irrigate ballfields and other green space at the high school. $350,000 2018 WMO, CWF, SWUF W Central Lotus Lake Channel Restoration Phase II Stabilization of 1,540 lineal feet of deeply incised channel draining 347 acres to Lotus Lake $275,000 2021 WMO, SWUF Lower Bluff Creek TMDL Implementation Volume reduction and rate control in the Bluff Creek drainage are to reduce channel and gully erosion and sedimentation into the Creek. Includes LMRWD Bluff Creek Restoration Project $1,450,000 2018-2022 WMO, SWUF Upper Riley Creek Channel Stabilization Stabilization of in- and near-stream bank undercutting, escarpment and gully erosion in Riley Creek adjacent to the Public Works Facility. $132,000 2021 WMO, SWUF Rice Marsh Lake Iron Enhanced Sand Filter Installation of an iron-enhanced sand filter within Rice Marsh Lake Park. $300,000 2019 WMO, SWUF Enhance and Restore Wetland Draining to Lake Hazeltine Enhance and restore wetlands draining to impaired lake $200,000 2025 WMO, CWF, DNR, SWUF Christmas Lake Stormwater Volume and Pollutant Load Reduction To be identified $200,000 2027 WMO, SWUF Lake Virginia Stormwater Volume and Pollutant Load Reduction To be identified $600,000 2026 WMO, SWUF Lake Ann Parking Lot/Boat Launch Improvements Swale and infiltration basing to capture stormwater runoff along parking lot and boat ramp entering Lake Ann $100,000 2025 WMO, SWUF, GF 101 Stormwater Improvements Including Chloride Management Stormwater and chloride management improvements as part of the 101 realignment project. $1,000,000 2020-2023 WMO, SWUF, CWF, grants Lotus Lake Outfall Improvements Repair and restore highly eroded outfall channels entering Lotus Lake. Includes Kerber Pond outfall. $500,000 2024 WMO, SWUF Page | 5-12 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Program/Project Description Cost Year Funding Source* Street Sweeper Purchase a Vactor street sweeper. The City currently has only one street sweeper $239,000 2019 SWUF, GF, WMO Stormwater Infrastructure Maintenance/ Replacement Annual repair or replacement of public stormwater infrastructure costing less than $25,000. $450,000 Annual SWUF Stormwater Pond Improvements Inspection, repair, and cleaning of stormwater ponds $760,000 Annual SWUF Stormwater Management Component of Street Projects Infrastructure construction or expansion associated with street improvement projects $2,985,000 Annual SWUF, WMO, CWF Lake Lucy Lane Culvert Replacement Culvert replacement and stormwater improvements between wetlands North and South side of Lake Lucy Ln $30,000 2018 SWUF Pioneer Trail Flood Mitigation Reduce flood potential to residential structures by improving failing and deficient infrastructure $150,000 2019 SWUF Strategic Property Acquisition Strategic property acquisition $800,000 Periodic SWUF, WMO TOTAL: Capital Improvement Projects $11,204,000 • GF = General Fund; SWUF = Storm Water Utility Fund; WMO = local Watershed Management Organization; CWF = Clean Water Fund or similar grant funding Page | 5-13 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Table 5.3. Chanhassen LWMP Implementation Plan 2018-2027 by year. Program/Project 2018 2019* 2020* 2021* 2022* 2023* 2024* 2025* 2026* 2027* Administration Maintain and update modeling tools $30,000 $31,200 $32,448 $33,746 $35,096 $36,500 $37,960 $39,478 $41,057 $42,699 Implement SWPPP $430,000 $447,200 $465,000 $483,691 $503,000 $523,120 $544,045 $565,807 $588,439 $611,977 Implement ordinances $95,000 $98,800 $102,752 $106,862 $111,136 $115,581 $120,204 $125,012 $130,012 $135,212 Revise and update ordinances $5,000 $5,200 $5,408 $5,624 $5,850 $6,084 $6,327 $6,580 $6,843 $7,117 CIP Updates $5,000 $5,200 $5,408 $5,624 $5,850 $6,084 $6,327 $6,580 $6,843 $7,117 WCA Administration $40,000 $41,600 $43,264 $44,995 $46,794 $48,666 $50,613 $52,638 $54,744 $56,934 Education and Outreach General education and outreach programming $30,000 $31,200 $32,448 $33,746 $35,096 $36,500 $37,960 $39,478 $41,057 $42,699 Education and Outreach Plan $5,000 $5,200 $5,408 $5,624 $5,850 $6,084 $6,327 $6,580 $6,843 $7,117 Monitoring Water quality and AIS monitoring $20,000 $20,800 $21,632 $22,497 $23,397 $24,333 $25,306 $26,318 $27,371 $28,466 CAPITAL IMPROVEMENT PROJECTS TMDL/Resource Improvements Downtown Water Reuse Project $350,000 Lake Susan Park Water Re-use Project $50,000 Chanhassen HS Water Re-use Project $100,000 W Central Lotus Lake Channel Restoration Phase II $250,000 Lower Bluff Creek TMDL Implementation $250,000 $175,000 Upper Riley Creek Channel Stabilization $132,000 $25,000 $75,000 Rice Marsh Lk Iron Enhanced Sand Filter $300,000 Enhance and Restore Wetland Draining to Lake Hazeltine $200,000 Christmas Lake Stormwater Volume and Pollutant Load Reduction $200,000 Lake Virginia Stormwater Volume and Pollutant Load Reduction $600,000 Lake Ann Parking Lot/Boat Launch Improvements $100,000 101 Stormwater Improvements Including Chloride Management $1,000,000 Lotus Lake Outfall Improvements $500,000 Maintenance/Protection Projects Street Sweeper $239,000 Stormwater Infrastructure Maintenance/ Replacement $50,000 $50,000 $50,000 $50,000 $50,000 $75,000 $75,000 $100,000 $100,000 $100,000 Stormwater Pond Improvements $80,000 $80,000 $80,000 $80,000 $80,000 $100,000 $100,000 $300,000 $300,000 $300,000 Stormwater Management Component of Street Projects $360,000 $250,000 $100,000 $250,000 $250,000 $300,000 $300,000 $500,000 $500,000 Lake Lucy Lane Culvert Replacement $30,000 Pioneer Trail Flood Mitigation $150,000 Strategic Property Acquisition $300,000 $75,000 $75,000 $75,000 $75,000 $75,000 $75,000 $100,000 $100,000 $100,000 TOTAL, IMPLEMENTATION PROGRAMS AND PROJECTS $1,891,000 $1,576,400 $1,518,768 $1,322,409 $1,602,069 $2,302,952 $1,885,069 $1,968,471 $2,503,209 $2,139,338 Page | 5-14 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Program/Project 2018 2019* 2020* 2021* 2022* 2023* 2024* 2025* 2026* 2027* *Assumes an annual 4% budget increase; actual increase may differ. Page | 5-15 REVIEW DRAFT Local Stormwater Management Plan, January 2018 5.4 ADDRESSING IDENTIFIED PROBLEMS AND ISSUES As noted earlier in Table 3.2 of this Plan, the planning process revealed a number of problems and issues. Table 5.4 repeats those by category, and describes how each was addressed in this Plan. Table 5.4. Implementation actions addressing identified problems and issues. Category Identified Problems and Issues Identified Solutions Water Quality Conditions Lakes and streams are listed on the Clean Water Act Section 303(d) TMDL List of Impaired Waters. The CIP includes, and will periodically be updated to include, projects to achieve pollutant load and runoff volume reductions to address listed impairments and NPDES permit requirements. Nonpoint source pollution reduction is necessary through maintenance practices such as street sweeping, sump manhole cleaning, and BMP inspections. The City has an ongoing program of routine and targeted street sweeping and sump manhole cleaning. Public BMPs will continue to be systematically inspected. Maintenance activities and projects programmed into the CIP. Drainage and Flooding Near stream gullies and escarpments should be addressed to control sediment deposition into surface waters and to protect property and infrastructure. The City will continue to work with WMOs to protect existing and improve flood storage capacity through targeted BMPs and increased street sweeping. The City will prioritize BMPs that protect or repair highly erodible and sensitive soil areas in the Bluff Creek Overlay District. Regulatory Requirements and Operational Policies Atlas 14 updated precipitation frequency data is available for adoption. The City will require stormwater modeling work to use Atlas 14 precipitation depths and nested distributions. Approaches such as Minimal Impact Development and Integrated Management Practices are available to reduce the public expenditures necessary to control runoff and protect and improve water quality. The City will continue to work with developers to incorporate standards into new development and redevelopment. The City’s approved NPDES permit and SWPPP requires ordinance revisions and operating program enhancements. City Code will be revised within 12 months to incorporate volume management and water quality requirements. City goals, policies and ordinances to help protect natural resources may need review and refinement. The City currently has ordinances in place protecting steep slopes and bluffs, shorelands, wetlands, and the Bluff Creek Overlay District Water-Based Recreation Needs Water quality should be protected and improved to protect and enhance recreational opportunities. This Plan includes a number of capital projects and maintenance programs intended to improve water quality to better support fishing, swimming and boating. Control of aquatic invasive species (AIS) continues to be an important concern The City will continue to work with CCWMO, watershed districts, lake associations, and DNR to undertake AIS program activities such as watercraft inspections, biocontrol, fish restocking, or other similar activities. Maintenance Requirements BMP maintenance and repair requirements have been identified during NPDES The City will continue to systematically assess the condition of public BMPs. The CIP includes Page | 5-16 REVIEW DRAFT Local Stormwater Management Plan, January 2018 Category Identified Problems and Issues Identified Solutions inspections, including restoration of storage capacity, repair of erosion, and prevention of future problems. and will periodically be updated to include projects identified in the pond inventory and inspections. Street sweeping, sump manhole cleaning, and BMP inspections are necessary on an ongoing basis to help reduce nonpoint source pollutant loads. The maintenance program includes provisions for regular and special street sweeping; inspection and maintenance of sump manholes and catch basins; basin inspections and repairs; illicit discharge detection; and erosion control. Education and Outreach Education and outreach efforts could be expanded with a focus on targeted groups with new and expanded educational opportunities. Opportunities exist with CCWMO and other organizations to improve efficiency and reduce duplication of efforts Education and outreach efforts will be continued including written and electronic communications, and opportunities for participation by citizen volunteers such as the Wetland Health Evaluation Program (WHEP) and the Citizen Assisted Monitoring Program (CAMP) for lakes. Increase collaboration and coordination with CCWMO and other organizations Financial Resources Financial resources are limited, requiring that projects be prioritized. The budget in this Plan prioritizes operating programs and projects to address both regulatory and operational needs and water resource improvements. The City will continue to leverage available funding by collaborating with partners and seeking grant funding. Groundwater Protection The LWMP should be coordinated with the Wellhead Protection Program and Carver County Groundwater Plan (2016) so that policies that encourage infiltration and groundwater recharge are consistent with the policies to protect sensitive groundwater recharge areas Infiltration requirements are integrated with Wellhead Protection requirements and Carver County Groundwater Plan (2016) to protect groundwater quality. Seminary Fen is a rare calcareous fen and Assumption Creek is a trout stream, both of which are dependent on groundwater. The City participates in the Met Council’s Seminary Fen Work Group to study the effects of groundwater pumping on Seminary Fen. City ordinance imposes stringent standards on development and redevelopment in the Assumption Creek drainage area. Collaboration Opportunities There are opportunities for collaboration with other agencies such as the watershed districts, the Three Rivers Regional Park District, and state agencies to leverage expertise and resources to finance and construct improvements. The City will continue to collaborate with the watershed districts to identify and complete capital projects and pursue opportunities with development and redevelopment projects. Page | 6-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 6.0 Amendments to the Plan The Chanhassen Local Water Management Plan extends from 2018 to 2027. However, this document is intended to be a planning tool that will change as the City’s needs change and may be amended as necessary to meet the City’s goals. The Implementation Plan will be reviewed and updated annually. 6.1.1 WMO Plan Amendments Revisions to this Plan required by Watershed Management Organization (WMO) Plan Amendments will be addressed in accordance with Minn. Stat. 103B.235 and Minn. Rules 8410.0160 Subp.6. 6.1.2 Major Plan Amendments Major Plan Amendments to this Plan, such as adoption of significant revisions to official controls or actions that would change the Goals of the Plan will be reviewed by the City Council and submitted to the appropriate WMO for comment and approval and to the Metropolitan Council for comment as set forth in Minn. Stat. 103B.235 and Minn. Rules 8410.160 Subp. 6. 6.1.3 Routine Updates The Implementation Plan will be reviewed and updated as needed as the City’s annual NPDES, operating programs, and CIP and project needs are evaluated and completed. The City may make routine updates including budget and CIP changes, changes in education and outreach programming, revisions in operations and maintenance practices and other programming changes that are consistent with the Goals and policies set forth in this Plan without making formal revisions to this document. Page | 7-1 REVIEW DRAFT Local Stormwater Management Plan, January 2018 7.0 References Barr, 2010. Bluff Creek TMDL Biological Stressor Identification. <http://www.pca.state.mn.us/index.php/view-document.html?gid=13751> Barr, 2013a. Bluff Creek Watershed Total Maximum Daily Load Report: Turbidity and Fish Bioassessment Impairments. <http://www.pca.state.mn.us/index.php/view-document.html?gid=19684> Barr, 2013b. Lake Lucy and Lake Ann Use Attainability Analysis Update. <http://www.rpbcwd.org/files/7213/8426/4821/LakeLucy_LakeAnn_UAAUpdate_September2013_FINA L.pdf> Bonestroo, 1996. Bluff Creek Watershed Natural Resources Management Plan. <http://www.ci.chanhassen.mn.us/DocumentCenter/Home/View/323> MPCA, 2001. Minnesota River Basin Plan. <http://www.pca.state.mn.us/index.php/view- document.html?gid=9946> Wenck, 2013. Lake Susan Use Attainability Assessment (UAA) Update. <http://www.rpbcwd.org/files/4013/8426/4706/Lake_Susan_Report_FINALred1.pdf> [This page intentionally blank for printing] City of Chanhassen 2040 Comprehensive Plan230 Chapter 10 Comprehensive Plan Implementation and Capital Improvement Plan City of Chanhassen 2040 Comprehensive Plan231 This element contains a summary of the city code amendments required, initiatives and capital improvements that are necessary to implement the Comprehensive Plan for the next five years. It pulls together the recommendations of the various elements to provide an overview of the capital costs. The Capital Improvement element is designed to show the magnitude and timing for the construction of public improvements and provide a guide for future capital budgeting in the community. However, the city adopts a separate, five-year capital improvement program annually. 10.1 | Future Water System Facilities Official Controls The city has zoning controls in place governing all properties within the community. Throughout the period covered by this plan, the city will continually evaluate its ordinances to ensure that they are in line with the goals and policies outlined in this plan. Changes to official controls within this plan include: Amend the city code to include the following items pertaining to solar energy: definitions, permitted uses and plans, access to sunlight. Ongoing review of city ordinances to ensure that the code is in line with emerging trends, best management practices, and changing requirements and regulations. Establish and implement ongoing education programs designed to educate landowners in sensitive environmental areas and management practices and develop and maintain a public education program. Revise standards to require at a minimum the use of the 30-20-10 rule to select trees for projects. Surface water Major revisions to Chapters 19 and 20. 1. Required to be compliant with our NPDES permit and required for permit reissuance. 2. Required by our Watershed Management Organizations in conjunction with their 10 year Comp Plan updates (all four are also updating now) 3. Necessary to obtain LGU regulatory authority from the Watershed Management Organizations Initiatives Administrative Work with other governmental agencies and units to streamline, simplify and coordinate development review. 10 | Comprehensive Plan and Capital Improvement Plan Official Control Change:Completion Date Review existing ordinances to ensure compatibility with 2040 Comprehensive Plan December 31, 2019 Update the City’s Surface Water Management Plan (SWMP) in response to any regulation changes June 30, 2019 Ongoing/as needed Table 10.1 | Official Control Change City of Chanhassen 2040 Comprehensive Plan232 Natural Resources » Develop a Forestry Management Plan by identifying strategies or means to achieve the objectives of a safe, healthy, diverse and functional urban forest. » Develop a Natural Resources Stewardship Plan that would identify, prioritize, and recommend restoration and management strategies for all public natural areas. » Become certified as a GreenStep City. Parks and Trails Initiatives are specific actions or steps that are recommended for implementation. Initiatives are organized by the topic areas of parks, facilities, trails, preserves, programming and operations. The System Plan is the guiding doc- ument relative to City Initiatives for the Parks and Recreation System. Prioritization of the initiatives separated the actions in the time frames of short term, long-term and ongoing. The plan remains flexible so that all initiatives will occur as opportunities arise. The initiatives included in the System Plan are summarized by category below: and shown on the maps on the following page: Parks » Maintain Lake Ann Park as the premier community park » Add amenities to Bandimere, City Center and Lake Susan Community Parks » Use a maintenance and replacement schedule to keep neighborhood park facilities up to date » Seek opportunities to expand the park network to serve changing community needs and preserve natural amenities. Preserves » Continue to preserve sensitive lands within the Bluff Creek Corridor » Collaborate with other agencies to protect the Seminary Fen » Collaborate with other agencies to protect the Minnesota River Valley » Expand marketing and wayfinding » Expand opportunities to interact with and explore nature » Identify and protect natural areas that link parks, preserves, and destinations » Develop a Natural Resource Management Plan Facilities » Identify and construct a year-round signature recreation facility in the community » Add a destination splash pad at a community park » Establish an interpretative center with outdoor lab space and nature-based play » Add community-scale nature play at a community park and unstructured nature play throughout the community as appropriate » Improve user amenities at existing facilities » Explore opportunities for a second community garden » Implement recommendations of the Athletic Fields Study Programming » Continue to host at least five major community events » Expand informal, year-round events and nature-based programs » Collaborate with new and existing partner organizations to provide events and programming City of Chanhassen 2040 Comprehensive Plan233 » Establish an Event Management Plan » Annually assess pricing structure Trails » Address trail gaps and trail crossing safety issues » Work with partner agencies to reopen Minnesota River Bluff LRT Regional Trail » Complete trail connection to Minnesota River » Increase maps and wayfinding to identify loops, distances, and destinations » Provide more user amenities » Expand the number of natural surface trails » Explore opportunities to add trailheads » Initiate a single-track mountain bike trail study Operations » Use System Plan as a basis for budgeting and Capital Improvement Plan » Incorporate sustainable design and maintenance practices to make » Chanhassen a model » Create a tobacco use policy » Communicate benefits of parks and recreation » Establish a formal review process for program and event development. Surface Water Adding to the SWMP new Appendices for Enforcement Response Procedures, Public BMP Maintenance, Facility Maintenance, and Vegetation Management Plan, Illicit Discharge and Detection Program, Standard Details and Specification Manual. City of Chanhassen 2040 Comprehensive Plan234 Table 10.2 | Comprehensive Plan Implementation Comprehensive Plan Implementation 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 TOTALS Parks & Trails Neighborhood Park Shelters 80,000$ 640,000$ 720,000$ Chan Nature Preserve Trail 90,000$ 90,000$ Fox Woods trails -$ Arboretum Trail/Hwy 61 underpass 140,000$ 140,000$ CSAH 61 trail -$ Neighborhood Park Improvements 561,000$ 169,000$ 426,000$ 17,000$ 478,000$ 73,000$ 338,000$ 783,000$ 79,000$ Community Park Improvements 65,000$ 120,000$ Subtotal 80,000$ 701,000$ 899,000$ 426,000$ 17,000$ 478,000$ 138,000$ 458,000$ 783,000$ 79,000$ 4,059,000$ Roads Annual Local Street Improvements 2,700,000 3,300,000 1,600,000 2,200,000 3,300,000 3,399,000 3,500,000 3,606,000 3,700,000 3,825,604 Collector Road Street Improvements $2,300,000 $2,100,000 $1,300,000 $1,900,000 1,000,000$ 1,000,000$ 1,000,000$ 1,000,000$ 1,000,000$ 12,600,000$ TH 101 Improvement 32,000,000$ 32,000,000$ Market Blvd.3,200,000$ 3,200,000$ Lyman Blvd. Improvements 13,900,000$ 13,900,000$ Galpin Blvd. (north of Highway 5)10,000,000$ -$ Pavement Management 300,000$ 300,000$ 300,000$ 300,000$ 300,000$ 300,000$ 300,000$ 300,000$ 300,000$ 300,000$ 3,000,000$ Subtotal 300,000$ 19,200,000$ 5,700,000$ 6,400,000$ 46,400,000$ 4,600,000$ 4,699,000$ 4,800,000$ 4,906,000$ 5,000,000$ 102,005,000$ Sewer LB1 Lift 6,110,000$ 5,000,000$ 11,110,000$ 2010 MUSA Lift Station 2,100,000$ 2,100,000$ Lower Bluff Creek Trunk -$ Sewer Replacement 250,000$ 75,000$ 250,000$ 75,000$ 250,000$ 75,000$ 250,000$ 10,000$ 100,000$ 1,335,000$ Lift Station rehabilitation 75,000$ 50,000$ 50,000$ 75,000$ 50,000$ 120,000$ 50,000$ 75,000$ 75,000$ 75000 695,000$ Trunk Oversizing 75,000$ 75,000$ 150,000$ TH 101 Pioneer Tr - CSAH 61 750,000$ 750,000$ I/I 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ Subtotal 275,000$ 500,000$ 1,150,000$ 2,625,000$ 6,510,000$ 5,570,000$ 325,000$ 525,000$ 285,000$ 375,000$ 18,140,000$ Water West WTP -$ I/I abatement 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 200,000$ 2,000,000$ Lower Bluff Creek 1,100,000$ 1,100,000$ TH 101 Pioneer Tr - CSAH 61 850,000$ 850,000$ Watermain replacement 850,000$ 100,000$ 850,000$ 100,000$ 850,000$ 100,000$ 850,000$ 450,000$ 472,500$ 4,622,500$ Well rehabilitation 90,000$ 90,000$ 90,000$ 90,000$ 90,000$ 90,000$ 90,000$ 90,000$ 90,000$ 94,500$ 904,500$ Trunk oversizing 75,000$ 75,000$ 150,000$ Well #16 1,400,000$ 1,400,000$ Well #17 1,600,000$ Subtotal 290,000$ 1,140,000$ 1,315,000$ 2,240,000$ 465,000$ 2,540,000$ 390,000$ 1,140,000$ 740,000$ 2,367,000$ 12,627,000$ Surface Water Lower Bluff Creek -$ W Central Lotus Lake Restoration 250,000$ 250,000$ Water Reuse Parternship Projects 200,000$ Upper Riley Creek Stabilization 100,000$ 100,000$ Lake Susan Park water reuse -$ Rice Marsh Lake sand filter 300,000$ 300,000$ Chan. High water reuse -$ Property Acquisition 75,000$ 75,000$ 75,000$ 75,000$ 75,000$ 75,000$ 450,000$ Street Improvements 250,000$ 250,000$ 250,000$ 100,000$ 250,000$ 55,000$ 250,000$ 100,000$ 55,000$ 1,560,000$ Stormwater Ponds 60,000$ 80,000$ 80,000$ 80,000$ 100,000$ 100,000$ 100,000$ 100,000$ 100,000$ 100,000$ 900,000$ LID projects 11,250$ 11,250$ 11,250$ 11,250$ 11,588$ 11,935$ 12,293$ 12,662$ 13,042$ 13,433$ 119,953$ Infra. Maintenance/Replacement 25,000$ 25,000$ 25,000$ 25,000$ 50,000$ 50,000$ 50,000$ 50,000$ 50,000$ 50,000$ 400,000$ Subtotal 546,250$ 841,250$ 441,250$ 441,250$ 261,588$ 486,935$ 217,293$ 487,662$ 263,042$ 293,433$ 4,279,953$ TOTAL 1,491,250$ 22,382,250$ 9,505,250$ 12,132,250$ 53,653,588$ 13,674,935$ 5,769,293$ 7,410,662$ 6,977,042$ 8,114,433$ 141,110,953$ PLANNING COMMISSION STAFF REPORT Tuesday, July 17, 2018 Subject Galpin Property PUD Concept Review Section NEW BUSINESS Item No: C.1. Prepared By Kate Aanenson, Community Development Director, AICP File No: PC 201812 PROPOSED MOTION: The Planning Commission provides observations and feedback to the City Council on the Concept Planned Unit Development. SUMMARY OF REQUEST The developer is requesting conceptual review to consider rezoning from Agricultural Estate to PUD Residential. APPLICANT U.S. Home Corporation, d/b/a Lennar SITE INFORMATION PRESENT ZONING: RR Rural Residential LAND USE:Low Density Residential 1.2 – 4 units an acre ACREAGE: Approximately 188 acres gross, 88 acres net DENSITY: 2.26 units an acre net BACKGROUND In November 2017 the property was listed for sale by Comerica Bank Trust NA, as personal representatives of the Estate of Prince Rogers Nelson and Paisley Park Enterprises. On several occasions the seller’s agents and members of Lennar have met with city staff to review the zoning standards and the best use for the property. In May of 2018 U.S. Home Corporation entered into an Option Agreement to purchase the property (from the developers narrative). RECOMMENDATION The Planning Commission provides observations and feedback on the Concept Planned Unit Development along with the following comments: PLANNING COMMISSION STAFFREPORTTuesday, July 17, 2018SubjectGalpin Property PUD Concept ReviewSectionNEW BUSINESS Item No: C.1.Prepared By Kate Aanenson, CommunityDevelopment Director, AICP File No: PC 201812PROPOSED MOTION:The Planning Commission provides observations and feedback to the City Council on theConcept Planned Unit Development. SUMMARY OF REQUESTThe developer is requesting conceptual review to consider rezoning from Agricultural Estate to PUD Residential.APPLICANTU.S. Home Corporation, d/b/a LennarSITE INFORMATIONPRESENT ZONING: RR Rural ResidentialLAND USE:Low Density Residential 1.2 – 4 units an acreACREAGE: Approximately 188 acres gross, 88 acres net DENSITY: 2.26 units an acre net BACKGROUNDIn November 2017 the property was listed for sale by Comerica Bank Trust NA, as personal representatives of theEstate of Prince Rogers Nelson and Paisley Park Enterprises. On several occasions the seller’s agents and members ofLennar have met with city staff to review the zoning standards and the best use for the property. In May of 2018 U.S.Home Corporation entered into an Option Agreement to purchase the property (from the developers narrative).RECOMMENDATION The Planning Commission provides observations and feedback on the Concept Planned Unit Development along with the following comments: 1. With the Preliminary PUD, the developer shall address the comments in the staff report from the following: City Engineering Water Resources Coordinator Environmental Resources Specialist Parks and Recreation Building Planning Watershed District ATTACHMENTS: PC Staff Report 1812 Application for Development Review 1812 Galpin Concept Review Narrative Affidavit of Mailing 1812 Landmark Home Plans Villa Home Plans Luxury Single Family Home Plans PUD layout PUD layout with aerial RSF Layout RSF with aerial Email from MN Board of Water & Soil Resources Memo from RPBCWD Memo from CenterPoint Energy Email from Holly Nelson Letter from Strauss CITY OF CHANHASSEN PC DATE: July 17, 2018 CC DATE: August 13, 2018 REVIEW DEADLINE: August 15 CASE # 2018-12 BY: KA PROPOSAL: The applicant is requesting a general concept plan review for a Planned Unit Development (PUD). The site is currently zoned Rural Residential. LOCATION: 7141 Galpin Boulevard APPLICANT: U.S. Home Corporation, d/b/a Lennar PRESENT ZONING: RR Rural Residential 2030 LAND USE PLAN: Low Density Residential 1.2 – 4 units an acre ACREAGE: Approximately 188 acres gross DENSITY: 2.26 units an acre net 88 acres net SUMMARY OF REQUEST: The developer is requesting conceptual review to consider rezoning from Agricultural Estate PUD Residential. LEVEL OF CITY DISCRETION IN DECISION MAKING: The Planning Commission is providing the City Council with comments and direction on the Concept Planned Unit Development. Notice was sent to adjacent properties within 500 feet. PROPOSAL/SUMMARY The applicant is requesting a general concept plan review for a Planned Unit Development (PUD). The site is currently zoned Rural Residential. BACKGROUND In November 2017 the property was listed for sale by Comerica Bank; Trust NA, as personal representatives of the Estate of Prince Rogers Nelson and Paisley Park Enterprises. On several occasions the seller’s agents and members of Lennar have met with city staff to begin reviewing the zoning standards and the best use for the property. In May of 2018 U.S. Home Corporation entered into an Option Agreement to purchase the property. (from the developer’s narrative) PROPOSED ACTION: The Planning Commission provides observations and feedback to the City Council on the Concept Planned Unit Development. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 2 of 13 Map of property Parcel and Site Information Parcel ID Taxpayer GIS Acreage Land Use Current Zoning 256900030 PRN 8.95 Low Density 1.2-4 units/acre Rural Residential 256900020 PRN 149.0 Low Density 1.2-4 units/acre Rural Residential 250100100 Paisley Park Enterprises Inc. 3.23 Low Density 1.2-4 units/acre Rural Residential 256900010 PRN 20.78 Low Density 1.2-4 units/acre Rural Residential 250100200 PRN 6.62 Low Density 1.2-4 units/acre Rural Residential Total 188.58 Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 3 of 13 The surrounding land uses are included in the following table: Subdivision Zoning Land Use Notes South Royal Oaks RSF Low Density 13 acres-33 lots West Woods at Long Acres PUD Low Density 97 acres-115 lots Wynsong - shoreland district PUD Low Density 9.4 acres 4 units North Ashling Meadows RSF Low Density 40 acres-51 units East Lake Ann Recreational not applicable not applicable Undeveloped Adjacent LAND South Gorra Property Zoning Land Use Notes Rural Residential Low Density 38 (25 net) acres- 50 units Rural Residential Low/Medium 34 acres – 204 units Rural Residential Medium Density 46 acres - 276 units Rural Residential High Density 28 acres -336 units The main access point to the development will be of off Galpin Boulevard. The plan proposes connections from the Ashling Meadows subdivision streets of Topaz Drive, Ruby Lane and Lucy Ridge Lane. An existing home that is on 2.62 acres at 7011 Galpin Boulevard is not included in the subdivision. ZONING DISTRICT Low-density zoning options 1.2-4 Units an acre Residential Single Family (RSF) requires 15,000 square foot lots. This zoning district would cause the most the environmental impact to the site. In order to achieve the desire for a larger preservation area next to the lakes, the most appropriate zoning would be either a planned unit development (PUD) or residential-low and medium density (RLM). Both of these districts require preservation of environmental features. It will be the city’s goals to ensure that the request for either zoning meets the intent. ARTICLE VIII. – PLANNED UNIT DEVELOPMENT DISTRICT DIVISION 1. – GENERALLY Sec. 20-501. – Intent. Planned Unit Developments (PUD) offer enhanced flexibility to develop a site through the relaxation of most normal zoning district standards. The use of the PUD zoning also allows for a greater variety of uses, internal transfers of density, construction phasing, and a potential for lower development costs. In exchange for this enhanced flexibility, the city has the expectation that the development plan will result in a significantly higher quality and more sensitive proposal than would have been the case with the use of other, more standard zoning districts. It will be the applicant’s responsibility to demonstrate that the city’s expectation is to be realized as evaluated against the following criteria. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 4 of 13 The applicant is pursuing the PUD Zoning. In their narrative, they have stated, “The use of the PUD zoning also allows for greater specificity in the types, location and sizes of uses. The city has the expectation that the development plan will result in a significantly higher quality and more sensitive proposal than would be the case with the other, more standard zoning districts. It is the applicant's responsibility to demonstrate that the city's expectations are to be realized as evaluated by the city’s goals.” Concept PUD – What is required? Chapter 20 - Zoning, Article VIII. – Planned Unit Development District, Division 2. – Procedures Sec. 20-517. - General concept plan. (a) In order to receive guidance in the design of a PUD prior to submission of a formal application, an applicant may submit a concept plan for review and comment by the planning commission and city council. Submission of a concept plan is optional but is highly recommended for large PUDs. In order for the review to be of most help to the applicant, the concept plan should contain such specific information as is suggested by the city. Generally, this information should include the following information appropriate to the type of development, e.g., commercial, industrial or residential: (1) Approximate building areas, pedestrian ways and road locations; (2) Height, bulk and square footage of buildings; (3) Type, number or square footage or intensities of specific land uses; (4) Number of dwelling units; (5) Generalized development plan showing areas to be developed or preserved; and (6) Staging and timing of the development. (b) The tentative written consent of all property owners within the proposed PUD shall be filed with the city before the staff commences review. Approval of the concept statement shall not obligate the city to approve the final plan or any part thereof or to rezone the property to a planned unit development district. (c) The final acceptance of land uses is subject to the following procedures: (1) The developer meets with city staff to discuss the proposed developments. (2) The applicant shall file the concept stage application and concept plan, together with all supporting data. (3) The planning commission shall conduct a hearing and make recommendations to the City Council. Notice of the hearing shall consist of a legal property description, description of request, and be published in the official newspaper at least ten days prior to the hearing. Written notification of the hearing shall be mailed at least ten days prior thereto to owners of land within 500 feet of the boundary of the property and an on-site notification sign erected. (4) Following the receipt of the report and recommendations from the planning commission, the city council shall consider and comment on the concept plan. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 5 of 13 The PUD process provides an opportunity to receive observation and feedback from other jurisdictions, Planning Commission, City Council and residents of Chanhassen. Summary of Request The applicant proposal is requesting the Low Density Residential PUD Zoning. Site Analysis Gross area 188 acres • Wetland Area 49 acres • Galpin Boulevard ROW Area 1 acre • Dedicated Public Park Area 50 area ( upland) Net acres 88 Manage 1 Wetland Standards • Buffer 30 feet • Building Setback for Buffer 25 feet • Accessory Building setback from the Buffer 15 feet Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 6 of 13 Proposed Lot standards: North lots - Shoreline Overlay non-riparian lots 45 Width 90 feet Area 15,000 sq. feet OHW 75 foot setback Bluff 30 foot setback Local street ROW setback 30 feet Impervious Surface 25 % lots with in the Shoreland District Central Lots 102 Width 65 feet Area 8,450 sq. feet Front setback 25 feet Rear setback 25 feet Side setback 5 feet and 10 feet Lot Coverage 35 % South Lots 52 Width 55 feet Area 6,000 sq. feet Front setback 25 feet Rear setback 25 feet Side setback 5 feet and 10 feet Lot Coverage 35 % The developer has submitted a plan that uses the RSF Zoning District. While the plan is not consistent with the Park Comprehensive Plan, the Developer has shown what they could achieve applying the RSF (15,000 square foot minimum) zoning district. The total lots under this proposal is 20. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 7 of 13 Planning Departments Comments Provide a variety of housing types. Attached are Lennar’s Home Plans. Engineering Comments These comments are intended to identify major considerations for PUD plan approval based upon a review by the Engineering department in response to a development plan submitted by Lennar and received June 15, 2018. Engineering supports the “density transfer” plan. • Tie the development design into the reconstruction project along Galpin Blvd. The city is considering significantly changing the profile of roadway between Hunter Dr. and Longacres Dr. The city would add an underpass in this area and adjust the existing profile by filling between the higher areas near the intersections. • Evaluate safe intersection design requirements and sight distances along Galpin Blvd. • Detail trail connections through the development to Galpin Blvd and the existing park system. • Consider an access for city vehicles to the well house site along Galpin Blvd. • Propose and coordinate property swap near the well site to facility proposed layout. • Consider access along the MCES interceptor and their permanent easement to facilitate maintenance of the sanitary pipeline. Show the permanent easement on the site plan. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 8 of 13 • Evaluate and maintain bluff stability along the northeast side of the site adjacent to Lake Lucy. • Communicate plan for bluff areas along north grouping of homes (90 lot area). • Develop and communicate a detailed storm water plan. • Identify sanitary and water planning meeting the city’s comprehensive plans. • Identify wetland areas intended to be mitigated. Communicate plan to address mitigation requirements. • Detail right-of-way and street widths. • Document proposed street grades. • Detail areas intended for use of retaining wall systems and proposed wall heights. Include information regarding intended block systems. • Show building pad setbacks. • Document mass grading intentions and site balancing. • Identify grading coordination with the neighboring properties. • Identify soil stockpile areas left after mass grading. • Show streams and water flow conveyances along with their protection. • Evaluate coordination with the proposed street connections to Topaz Dr. • Identify naturally occurring features intended to be preserved. • Provide traffic impact study in conjunction with the developer’s proposal. • There is outstanding Assessments for the Lake Ann Interceptor Water Resources Comments • Water resources is strongly supportive of density transfer to preserve connected wetland and woodland areas. • An open space preservation narrative should also discuss wetland and water resource protection. The importance of these spaces to the community goes beyond regulatory and stormwater requirements. • HOA (Master Association) required to maintain open spaces including permanent stormwater best management practices, and buffers. • Must include an open space preservation plan and permanent funding mechanism to ensure maintenance and preservation of open spaces. • Drain tile must be installed back of curb and all sumps connected per Chanhassen Standards and Specifications. • Developer is responsible for completing MnRAM assessments for all wetlands on the property. MnRAMs must be approved by Chanhassen Water Resources Coordinator and Riley Purgatory Bluff Creek Watershed District (RPBCWD). • Approved MnRAMs are required to determine wetland buffer requirements, impacts, and assessments. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 9 of 13 • Wetland Conservation Act (WCA) process must be completed for all proposed impacts. A Notice of Decision for Boundary and Type is the only Decision that has been issued at this time. • All WCA conditions of approval must be completed prior to issuing a grading permit. • All buffers and setbacks must be shown on plans. • Buffer averaging must be shown on all plans. • All lots must meet minimum buffer and setback requirements. • All water resources, and water resource impacts must be shown on plans including creeks, streams, riverines, and natural drainage ways. Not all water resources are identified on the Wetland Delineation. • The creek at the northwest corner connecting Wetland 2 to Wetland 1 must be preserved as an open channel. No filling or piping is permitted. • Crossings of natural channels must be in the form of bridges to allow for passage of wildlife and native vegetation preservation. • Shoreline and streambank restorations shall be incorporated into the plan whenever possible. • Wetlands, buffers, water resources, and stormwater BMPs must be placed in outlots Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 10 of 13 • All pervious surfaces must utilize native vegetative cover, deep rooted low mow/no mow/turf alternatives, or approved landscape plantings. Landscape plantings include woody vegetation, annual and perennial forbs, ornamental grasses, fruit/vegetable gardens, and mulch. • Irrigation systems are discouraged unless they prioritize stormwater re-use. • Identify how green design practices will be prioritized to reduce environmental impact. • Tree preservation and native habitat preservation credits should be discussed further with the city and RPBCWD. • Identify all wildlife corridors, and opportunities to incorporate wildlife corridors into plans. • No structure may be constructed or reconstructed such that its lowest floor elevation is less than 3 feet above the 100 year flood elevation or emergency overflow of any water resource. Note this standard varies slightly from the RPBCWD standard. • Every effort should be made to locate any wet detention basins in low visibility locations. Residents do not find these hard working, pollutant removal devices appealing. They are critical to environmental health, function and public safety, however, these are not “water features.” • Consider aeration in wet detention basins to increase evaporation and reduce algal growth. • A master grading plan will be reviewed and approved for the development. Each lot should also be reviewed by builder and staff to identify missed opportunities to improve grading, drainage, erosion and sediment control, including impacts to adjacent lots. • Provide pet waste facilities throughout the development that include biodegradable bags, disposal containers, educational signage. Facilities must not be directly adjacent to water resources. Facilities will be owned and maintained by HOA. • Identify all public and private stormwater infrastructure, water resources, and drainage pathways on adjacent properties. • The proposed maximum lot coverage of 25% (shoreland overlay district), and 35% (all other lots) is acceptable, however, the developer should limit this to 20% and 30% respectively during the initial development of each lot. This will allow residents 5% lot coverage to utilize for future patios, pathways, sheds, fireplaces, etc. This is a significant issue in the city. • Identify opportunities to incorporate pervious surfaces into lot coverage during development. • Applicant must provide the annual runoff volumes to each wetland for the pre- and post- project conditions. • The proposed redevelopment will need Riley-Purgatory-Bluff Creek Watershed District (RPBCWD) permits. • It is the applicant’s responsibility to ensure and submit proof that permits are received from all other agencies with jurisdiction over the project (i.e. Army Corps of Engineers, DNR, MnDOT, Carver County, RPBCWD, Board of Water and Soil Resources, PCA, etc.). • Project must meet all stormwater requirements of the city and RPBCWD. • Project will require stormwater management fees associated with city development review and permitting process. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 11 of 13 • The city is in agreement with the RPBCWD comments identified in the Memorandum dated June 29, 2018 titled ‘Proposed Single Family Residential Development Galpin Boulevard Planning Case 2018-12.’ Any deviation from those comments are noted in this document. Landscaping Comments/ Tree Preservation Existing conditions on site include maple/basswood (Big Woods) forest in the eastern and northern sections of the property, a lowland floodplain forest in the center area, a mesic oak forest in the central western half and mixed hardwood forest in the southwestern corner of the site. The wooded areas cover a significant portion of the site. Aggressive understory species, such as buckthorn, are present in the western half of the site and are starting to move into the eastern half. There are significant, mature trees in all wooded areas with some of the largest trees being white and red oaks and some maples. Tree Preservation comments: • Applicant will be required to provide a tree inventory for all wooded areas within/near construction limits. Areas of preservation will not need to be inventoried. • In either Scenario, the applicant will need to meet canopy coverage requirements for the development. Preservation within the construction limits (small areas of tree groupings) should be pursued in order to meet requirements. However, oak and maples are sensitive to grade changes and if there is significant grading on site, then Scenario 2 would be highly preferable for tree preservation. • In either Scenario tree preservation along the north and south property lines adjacent to residential areas will be recommended. • The maple basswood in the eastern half of the site is of a better quality than the wooded areas on the west side of the property due to a lesser impact by invasive species. Protecting this forested area should be a priority and staff strongly recommends Scenario Two for tree preservation for future generations. • Linking wooded areas from Lake Ann and Greenwood Shores parks to the western side of the lake will be highly beneficial for forest health, wildlife protection and habitat. Landscaping Comments: • Tree Preservation/Canopy Coverage requirements may incur reforestation requirements for the developer, depending on preservation. · When re-planting, the applicant shall use a diverse mix of species • Bufferyard requirements will need to be met for the north, south, west and internal areas, depending on density differences. • Foundation plantings will be required for the Villa homes. • In common areas/HOA lots: · Preferable to have minimum mowed turf areas. Use prairie or no mow mixes in low use areas · Employ capture-and-use irrigation systems Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 12 of 13 Park Comments At their June 26th meeting, the Park and Recreation Commission recommended that the City Council acknowledged the Lennar Concept Plan 07 dated June 1, 2018 depicting 199 lots clustered to the west central and north central quadrants of the property and preserving 50+/- acres of public park area utilizing a density transfer and park dedication in the eastern quadrant of the property as the preferred starting point for the design of a preliminary plat for the proposed development. Arguably, the now pending subdivision and development of this parcel of land has been one of the most highly anticipated opportunities to create a quality housing community while simultaneously preserving a large tract of public open space that guarantees the character and integrity of Lake Ann Park will be preserved. More than a half dozen potential developers met with city staff prior to considering how they would propose to develop this property and how much they would offer the sellers as a purchase price. Lennar stated in that initial meeting that it was their desire to bring forward a plan that was both viable and met the goals and requirements of the city's guiding plans and ordinances. Now that Lennar has secured an option to purchase the property, they have delivered two concepts for developing the parcel to the city. It is staff's position that Concept Plan 07 succinctly captures the dual goals of creating a quality housing community while simultaneously preserving a large tract of public open space. Planning Commission Galpin Property Concept Planned Unit Development – Planning Case 2018-12 July 17, 2018 Page 13 of 13 Park and Recreation System Initiatives – from the System Plan: While the objectives and policies offer broad guidelines for park and recreation system development, the following initiatives have been identified by city staff, the Park and Recreation Commission, and citizens as key to completing the system and improving existing facilities to meet needs today and over the next 25 years. Numbered initiatives correspond to efforts depicted in Figure 6-8. Parks and Recreation Facilities: P-1. Expand Lake Ann Park to create a premier community park. Expansion of the park would incorporate natural woodlands west of Lake Ann and would preserve views across the lake, protect wildlife habitat, and preserve the community’s natural heritage. The expansion would also allow for a loop trail around Lake Ann and a connection to Lake Lucy. P-2. Create a new ball field complex to meet demands created by increasing population. P-3. Create neighborhood parks in the general locations identified on Figure 6-8 along with development. Fire Department • Cul-de-sacs to deviate from minimum sizes for fire apparatus roads in fire code (96 feet). • Fire hydrants put into area per code. RECOMMENDATION The Planning Commission provides observations and feedback on the Concept Planned Unit Development along with the following comments: 1. With the Preliminary PUD, the developer shall address the comments in the staff report from a. City Engineering b. Water Resources Coordinator c. Environmental Resources Specialist d. Parks and Recreation e. Building f. Planning g. Watershed District g:\plan\2018 planning cases\18-12 galpin development - lennar\concept staff report.doc 1 Galpin Property City of Chanhassen Introduction U.S. Home Corporation, d/b/a Lennar is proposing to develop Galpin Property (actual name TBD) in a manner that is sensitive to the environment and surrounding area. With this application we are submitting two conceptual scenarios. The first scenario is a ‘lot yield’ plan that has 202 homes and demonstrates how the property could be developed following the existing RSF zoning standards with one standard lot width and home style for the entire property. The second scenario is a ‘density transfer’ plan that has 199 homes with varying lot sizes demonstrating how the property could be developed through the use of a PUD that will offer diverse housing opportunities and price points accompanied by the preservation of open space. Background/History In November 2017 the property was listed for sale by Comerica Bank; Trust NA, as personal representatives of the Estate of Prince Rogers Nelson and Paisley Park Enterprises. On several occasions the seller’s agents and members of Lennar have met with City staff to begin reviewing the zoning standards and the best use for the property. In May of 2018 U.S. Home Corporation entered into an Option Agreement to purchase the property. Property Description The site consists of approximately 188 acres made up of several tax parcels (PID 25.6900010, 25.6900020, 25.6900030, 25.0100100, and 25.0100200) located in the Notheast Quarter of the Northwest Quarter of Section 10, Township 116, Range 23. All buildings have been removed and the property has been vacant for some time. The site suffers from frequent trespassers that use the property for walking trails. City Standards Land Use designation The property is designated for Low Density residential: RSF 1.2-4 units per acre. Lot yield Plan – 1.46 DU/Acre (202/138) Concept Plan – 2.26 DU/Acre (199/88) Zoning Classification The site is currently zoned as Rural Residential with underlying zoning of RSF; low density residential 1.2-4 units per acre. The lot yield plan follows RSF standards and has a density of 1.46. The density transfer plan requires a zoning 2 change to PUD to allow flexibility and the relaxation of strict application of the zoning ordinance in exchange for greater environmental sensitivity and preservation of open space for public use. At 2.26 units per acre the density transfer plan also fits within the RSF density classification. Surrounding Land Uses Residential developments of varying densities surround the site to the North, South, and West. To the West, across Galpin is Long Acres which was developed as a PUD to allow flexibility in design standards. Our primary street connections appropriately line up with Hunter Drive and Long Acres Drive. Boarding the property to the North and South are existing neighborhoods zoned RSF. The existing neighborhood to the North (Ashling Meadows) provides two existing road stubs to the subject property. There are no road connections to the South. Lake Lucy, and Lake Ann and their surrounding wetlands are located to the East. Both Ashling Meadows and Long Acres were built by Lennar under the Lundgren Bros Construction name. On the North end, both plans mirror the lot dimensions of the existing neighborhood. Topographical challenges naturally make the North portion of the site more conducive to a wider home style that may not require as much depth for building pads. On the South end of the property the ‘lot yield’ plan shows nine homes backing to the existing neighborhood to the South. The density transfer concept mitigates the visual impacts of smaller lots to the existing neighborhood by incorporating the use of cul-de-sacs and by limiting the home-style in that location to a single story Villa. In this scenario eleven homes will be visible to the existing neighborhood but will be orientated in a manner that attempts to minimize the number that back directly to the existing homes. Open Space Preservation The City of Chanhassen’s 2030 Comprehensive Plan identifies significant trail improvements along the Eastern boundary of the property that would enhance the Lake Ann Park and trail system by completing important connections between Lake Ann, Lake Lucy and Galpin Road. As part of this application we have provided two conceptual plans. The first scenario is a ‘lot yield’ plan that follows the City’s land use designation for the property and conforms to the minimum lot sizes and setbacks allowed within the RSF and Shoreland Overlay district. Park dedication would follow the Cities requirements as described in City Code. The second scenario is the ‘density transfer’ plan that focuses housing development closer to Galpin and preserves approximately 50 acres of land adjacent to Lake Lucy and Lake Ann that could be used for park dedication to the City. The overall lot count in both scenarios is roughly 200 homes. The difference between the two lies in the concentration of acreage used. In scenario one approximately 138 acres 3 are being developed to reach 200 homes. By mixing lot sizes scenario two strategically places the same 200 homes on 88 acres of land giving the opportunity to preserve significantly more open space for use by the residents of Chanhassen. Preserving the open space in this manner not only minimizes environmental impacts but also significantly reduces the length of public infrastructure (sewer, water, roads) required for long term maintenance by the City. Building Plans/Product Information Extensive research on housing availability and market conditions within the City of Chanhassen has guided us in putting together a plan that is matched by a product portfolio that includes an architecturally interesting variety of homes, and price points, that meet multiple buyer niches in Galpin Property . Landmark Series - Designed with efficiency in mind, the Landmark series meets the demands of today’s challenging housing market by offering a fantastic value planned specially for 65’ wide homesites. Lennar has successfully built the Landmark series in Reflections at Lake Riley, Boulder Cove, and Camden Ridge. Typical footprints are 50’ wide allowing the ability to maintain setbacks designated by zoning standards. A variety of houseplans and elevations make up this series offering square footages ranging from 2,200 sq ft to 3,200 sq ft plus the ability to finish the basement to add footage to the home. With families in mind, the homes typically include four bedrooms, a large open living space on the main level, a master suite, mud room, and three car garage. Sixty-five foot wide lots allow the ability to preserve open space without compromising the integrity of the neighborhood. Typical side yard setbacks will be maintained. An interesting streetscape will be maintained through the incorporation of a variety of elevations, materials, and color packages. Lots are arranged in a manner that will include an assortment of walk-outs, look-outs, and flats.  Traditional Series - The Traditional series is designed for the 90’ wide homesites with the move up buyer in mind. A variety of house plans will be offered ranging from 2,600 sq ft to 3,700 sq ft. plus the ability to finish the basement to add additional footage to the home. These well thought out plans typically include four bedrooms, a large open living space on the main level, master suite, craft room, three car garage, and allow for luxury upgrades such as an indoor sport court. No deviation from RSF standards is requested in the large lot area. An interesting streetscape will be maintained through the incorporation of a variety of elevations, materials, and color packages. Luxury Villa – The Luxury Villa is designed for the 55’ wide homesites along the Southern Boarder. The Luxury provides minimal maintenance housing for an underserved market in Chanhassen; and the Twin Cities in general, the ‘empty nester’. Designed for single level living, the Villa homes offer a spacious first floor that includes a master suite, fireplace, open living room, gourmet kitchen, 4 and study. A deck or three season porch is included with the home to allow the opportunity to enjoy the natural features of Galpin Property . Multiple elevations and color packages will be incorporated to reduce monotony. It is important to note that the lot yield plan would be made up of all Traditional Series homes. Based on our absorption forecasts and financial modeling it is a possible that we would need to sell off portions of the lots to other builders. Environmental Impacts Wetlands - A wetland delineation was completed on the site in September 2017. Wetland impacts have been minimized by careful planning and the preservation of open space. The ‘lot yield’ plan will require more impact to existing wetlands for the extension of public infrastructure (sewer, water, streets) to serve the upland adjacent to Lake Ann and Lake Lucy. Tree Preservation – Preservation of open space for public use will allow the opportunity to preserve large wooded areas that may otherwise be disturbed with development. The ‘lot yield’ concept that follows the existing zoning guidelines will have a much greater impact on the large stands of trees located in the upland areas fronting Lake Ann and Lake Lucy. Water Quality – Water quality will be managed through the incorporation of on- site ponding and other appropriate erosion control measures. We are evaluating the potential for water re-use on site to supplement irrigation systems. Lennar is committed to following stormwater policies enacted by the City of Chanhassen and the Minnesota Pollution Control Association (MPCA). Homeowners Association(s) A Master Homeowners Association will be established to maintain private common areas and community monuments. In the density transfer concept a Sub-Association will be created to take care of the common elements within the Villa area. The Villa will be ‘full maintenance’ in nature to include; professional management, mowing, plowing, and exterior upkeep of the homes. Owners of detached single family homes will be responsible for their own upkeep and maintenance subject to City Ordinance and Architectural Controls established within the Master Association. Summary Lennar has a long history of building successful Communities in the City of Chanhassen under the names Lennar, Ryland, Lundgren Bros. Construction, and Orrin Thompson Homes. We are very excited for the opportunity that lends itself through the careful development of this fantastic property and ask for your support. 5 Project Team Developer: U.S. Home Corporation, D/B/A Lennar Builder: Lennar Corporation Primary Contact: Joe Jablonski Planner/Engineer/Surveyor: Pioneer Engineering Wetland Specialist: TBD Landscape Architect: Pioneer Engineering Legal Council: Vantage Law Group Association Manager: TBD Project summary (US Home/Lennar) Galpin Property – 188 Gross Acres Scenario # 1 Total Homesites – 202 Approximate Developed Area – 138 acres Open Space – 50 acres Traditonal homesites – 202 Average Lot – 90’ wide Scenario # 2 Total Homesites – 199 Approximate Developed Area = 88 Acres Open Space = 100 Acres Traditional homesites – 45 Average Lot – 90’ wide Landmark Homesites – 102 Average Lot – 65’ wide Villa Homesites – 52 Average Lot – 55’ wide c 1OFGALPIN BOULEVARD CHANHASSEN, MINNESOTA 6-1-18 JLT JLT Name Reg. No.Date Revisions Date Designed Drawn 2015 Pioneer Engineering, P.A. Mendota Heights, MN 55120 2422 Enterprise Drive (651) 681-1914 Fax: 681-9488www.pioneereng.com LANDSCAPE ARCHITECTSLAND SURVEYORSLAND PLANNERSCIVIL ENGINEERS xx I hereby certify that this plan was prepared by me or under my direct supervision and that I am a duly Licensed Landscape Architect under the laws of the State of Minnesota 44763 Jennifer L. Thompson 1CONCEPT PLAN 07 LENNAR 16305 36TH AVENUE NORTHPLYMOUTH, MINNESOTA 55446 55' LOTS 65' LOTS 90' LOTS c 1OFGALPIN BOULEVARD CHANHASSEN, MINNESOTA 6-1-18 JLT JLT Name Reg. No.Date Revisions Date Designed Drawn 2015 Pioneer Engineering, P.A. Mendota Heights, MN 55120 2422 Enterprise Drive (651) 681-1914 Fax: 681-9488www.pioneereng.com LANDSCAPE ARCHITECTSLAND SURVEYORSLAND PLANNERSCIVIL ENGINEERS xx I hereby certify that this plan was prepared by me or under my direct supervision and that I am a duly Licensed Landscape Architect under the laws of the State of Minnesota 44763 Jennifer L. Thompson 1CONCEPT PLAN 07 LENNAR 16305 36TH AVENUE NORTHPLYMOUTH, MINNESOTA 55446 55' LOTS 65' LOTS 90' LOTS c 1OFGALPIN BOULEVARD CHANHASSEN, MINNESOTA 1-5-18 JLT JLT Name Reg. No.Date Revisions Date Designed Drawn 2015 Pioneer Engineering, P.A. Mendota Heights, MN 55120 2422 Enterprise Drive (651) 681-1914 Fax: 681-9488www.pioneereng.com LANDSCAPE ARCHITECTSLAND SURVEYORSLAND PLANNERSCIVIL ENGINEERS xx I hereby certify that this plan was prepared by me or under my direct supervision and that I am a duly Licensed Landscape Architect under the laws of the State of Minnesota 44763 Jennifer L. Thompson 1CONCEPT PLAN 04 LENNAR 16305 36TH AVENUE NORTHPLYMOUTH, MINNESOTA 55446 c 1OFGALPIN BOULEVARD CHANHASSEN, MINNESOTA 1-5-18 JLT JLT Name Reg. No.Date Revisions Date Designed Drawn 2015 Pioneer Engineering, P.A. Mendota Heights, MN 55120 2422 Enterprise Drive (651) 681-1914 Fax: 681-9488www.pioneereng.com LANDSCAPE ARCHITECTSLAND SURVEYORSLAND PLANNERSCIVIL ENGINEERS xx I hereby certify that this plan was prepared by me or under my direct supervision and that I am a duly Licensed Landscape Architect under the laws of the State of Minnesota 44763 Jennifer L. Thompson 1CONCEPT PLAN 04 LENNAR 16305 36TH AVENUE NORTHPLYMOUTH, MINNESOTA 55446 From:Aanenson, Kate To:Potter, Jenny Subject:FW: Chanhassen Planned Unit Development Concept Review Request Date:Wednesday, July 11, 2018 2:22:21 PM Attachments:image005.png image006.png image007.png image008.png From: Carlson, Ben (BWSR) <ben.carlson@state.mn.us> Sent: Tuesday, July 3, 2018 1:03 PM To: Meuwissen, Kim <kmeuwissen@ci.chanhassen.mn.us> Cc: Potter, Jenny <JPotter@ci.chanhassen.mn.us>; Aanenson, Kate <kaanenson@ci.chanhassen.mn.us> Subject: RE: Chanhassen Planned Unit Development Concept Review Request In regards to the Galpin Development – PUD Concept review, I strongly support the “Density Transfer” plan as this would result in less wetland impact and would also preserve a high quality maple-basswood forest. I do not support the “lot yield” plan for the reason previously listed. Ben Carlson Wetland Specialist Minnesota Board of Water and Soil Resources From: Meuwissen, Kim [mailto:kmeuwissen@ci.chanhassen.mn.us] Sent: Wednesday, June 20, 2018 10:28 AM To: Carlson, Ben (BWSR) <ben.carlson@state.mn.us> Cc: Potter, Jenny <JPotter@ci.chanhassen.mn.us>; Aanenson, Kate <kaanenson@ci.chanhassen.mn.us> Subject: Chanhassen Planned Unit Development Concept Review Request Mr. Carlson, Please review and respond to the attached Agency Review Request no later than Thursday, July 5, 2018. Documents related to this request can be found at www.ci.chanhassen.mn.us/2018-12. Thank you. Kim Meuwissen Office Manager CITY OF CHANHASSEN PH. 952.227.1107 FX. 952.227.1110 www.ci.chanhassen.mn.us protect. manage. restore. 18681 Lake Drive East Chanhassen, MN 55317 952-607-6512 www.rpbcwd.org Memorandum To: Kate Aanenson, Community Development Director From: Terry Jeffery, CWD Subject: Proposed Single-Family Residential Development Galpin Boulevard Planning Case 2018-12 Date: June 29, 2018 c: Claire Bleser; Administrator Riley-Purgatory-Bluff Creek Watershed District This proposed redevelopment will need a Riley-Purgatory-Bluff Creek Watershed District (RPBCWD) permit prior to beginning construction activities. This includes clearing and grubbing and any grading activities. We appreciate the opportunity to provide preliminary comments on the project. The RPBCWD has not received a permit application for this project but offers the following summary of preliminary RPBCWD review comments for the proposed Galpin Boulevard Development in Chanhassen, MN. Additional comments will likely arise once an official application is submitted for RPBCWD review. We are currently scheduled to meet the developer to discuss the project the week of July 1st. The RPBCWD permit application, rules and rule guidance are available for download on the RPBCWD website: http://www.rpbcwd.org/permits/. The following comments are based on the rules that would likely apply to this project and highlight the areas where revisions or additional information would be needed to meet the RPBCWD rules. These review comments do not constitute approval, a variance, or exemption from the rules. Therefore, this project will require permit approvals from the RPBCWD Board of Managers. These comments should be considered in the context that Lake Ann has some of the best water quality in the District and that is, in large part, a result of the limited development around the lake. Urbanization of a watershed will always result in degradation of water quality. Steps should be taken to minimize and mitigate these impacts to this unique resource that is so central to Chanhassen’s park system and provides so many recreational and educational opportunities. The preservation of woodland and wetland areas, especially those more proximal to Lake Ann through better site design practices such as density transfer are strongly supported. Rule B: Floodplain Management and Drainage Alterations Rule B: Floodplain Management and Drainage Alterations applies if a project alters or fills land below the 100-year flood elevation of a waterbody in the watershed. Based on the submitted plans, it is unclear if the project will fill below the 100-year flood elevation of one or more of the wetland on the site. In this case Rule B would apply, and the comments below should be reflected in the plans. • Compensatory storage at the same elevation (+/- 1 foot) and within the floodplain of the same waterbody must be provided for any fill below the 100-year flood elevation. 2 Rule C: Erosion and Sediment Control Erosion and Sediment Control Permit (Rule C) is required from the RPBCWD because more than 50 cubic yards of earth will be placed, altered, or removed and more than 5,000 square feet of land-surface area will be altered (Rule C, Section 2.1). Please see Rule C, Section 3 for the applicable criteria and notes that must be included with the erosion control aspects of the proposed project. Given the high level, generalized nature of the provided plans the necessary erosion control notes or needed erosion prevention and sediment control features are not shown. The needed erosion control notes for inclusion on the plan sheets are available for download under supporting documents on the RPBCWD website: http://www.rpbcwd.org/permits/. Rule D: Wetland and Creek Buffer A Wetland and Creek Buffer Permit (Rule D) is required from the RPBCWD because the proposed activities trigger RPBCWD Rule J (Rule D, Section 2) and there are several wetlands on the project parcel downgradient of the proposed work based on the submitted site survey, the approved wetland type and boundary determination report, National Wetland Inventory mapping, and indicated in the project narrative. Efforts should be taken to avoid and minimize wetland impacts where possible in a manner consistent with the MN WCA and with consideration given to the comments of the Technical Evaluation Panel. Comments provided below are preliminary in nature and the applicant should review the RPBCWD’s Wetland and Creek Buffer Rule for full details on submittal requirements. The following criteria would apply. • A copy of the wetland delineation report and MnRAM assessment must be provided with the application package to confirm the wetland value in accordance with RPBCWD Appendix D1. The RPBCWD value may differ from the value assigned by the city of Chanhassen. • Buffer must be indicated by permanent, free-standing markers at the buffer’s upland edge, in material conformity with a design and text provided by the District. A marker must be placed along each lot line, with additional markers at an interval of no more than 200 feet or where the buffer changes direction. The location of the markers and a detail for the markers must be provided. • A note must be included on the plans indicating: The potential transfer of aquatic invasive species (e.g., zebra mussels, Eurasian watermilfoil, etc.) must be minimized to the maximum extent possible. • Before any work subject to District permit requirements commences, buffer areas and maintenance requirements must be documented in a declaration and recorded in the office of the county recorder or registrar. Rule J: Stormwater Management A Stormwater Management Permit (Rule J) is required for this project because more than 50 cubic yards of earth will be placed, altered, or removed and more than 5,000 square feet of land-surface area will be altered (Rule J, Section 2.1) based on the information provided by the City. Based on the information provided, it appears the project is a new development and the criteria in Rule J, Section 3 would apply to the entire parcel. Comments provided below are preliminary and general in nature and the applicant should review the RPBCWD’s Stormwater Management Rule for full details on submittal requirements. The following criteria would apply. 3 • An applicant for a permit under this rule must demonstrate, using a model utilizing the most recent applicable National Weather Service reference data (e.g., Atlas 14), that the implementation of its stormwater management plan will: o Limit peak runoff flow rates to that from existing conditions for the two-, 10- and 100-year frequency storm events using a nested 24-hour rainfall distribution, and a 100-year frequency, 10-day snowmelt event, for all points where stormwater discharge leaves the site; • Provide for the abstraction onsite of 1.1 inches of runoff from the new or fully reconstructed impervious surface of the parcel; o Soil borings must be provided at all stormwater BMP locations. These must support the infiltration rates used in the design and confirm that the ordinary high groundwater level is at least three feet below the bottom of any proposed filtration or infiltration features. o The narrative notes that ponding will be used. While it may well be that ponding becomes a part of the overall stormwater management strategy, the applicant must first look to abstract 1.1 inches using the sequencing set forth in Rule J, §3.3. o Infiltration is not the only method of abstraction. The stormwater management must consider other methods of abstraction and discuss the feasibility of these measures such as reuse mentioned in the narrative. • Provide for at least sixty percent (60%) annual removal efficiency for total phosphorus, and at least ninety percent (90%) annual removal efficiency for total suspended solids from site runoff. The onsite abstraction of runoff may be included in demonstrating compliance with the total suspended solids and total phosphorus removal requirements. • No structure may be constructed or reconstructed such that its lowest floor elevation is less than 2 feet above the 100-year event flood elevation and no stormwater management system may be constructed or reconstructed in a manner that brings the low floor elevation of an adjacent structure into noncompliance with this standard. • General Comments: o All stormwater management structures and facilities must be designed for maintenance access and properly maintained in perpetuity. A maintenance and inspection plan must be provided. The maintenance and inspection plan must include specific maintenance requirements for the proprietary BMPs installed. o See Rule J, Section 4 for permit exhibit requirements. Summary Based on the information provided to date, a permit from the RPBCWD will be required prior to construction to likely cover the following: Erosion and Sediment Control, Wetland and Creek Buffer, and Stormwater Management. It is also possible that the Floodplain Management and Drainage Alteration rule will be triggered. The online permit application, rules, maintenance declaration template, and financial assurance templates are available for download on the RPBCWD website: http://www.rpbcwd.org/permits/. The District supports and encourages the utilization of Better Site Design and other methods to protect the water quality in Lake Ann as well as the downstream water resources. Thank you for the opportunity to review this concept plan. Please contact us with any questions. From:Aanenson, Kate To:Potter, Jenny Subject:FW: Prince’s land off Galpin Date:Wednesday, July 11, 2018 2:22:45 PM -----Original Message----- From: Holly Nelson <hollysn9@gmail.com> Sent: Wednesday, June 20, 2018 9:12 PM To: Aanenson, Kate <kaanenson@ci.chanhassen.mn.us> Subject: Prince’s land off Galpin I just read through the development plans from Lennar for Prince’s land. Those 55’ and 65’ lots make me sad. I was hoping this would be an elite development in Chan and instead it’s sadly dense. I read their justification that if they spread it out they’d fit that many lots but are condensing it for the parkland. It would be so much nicer to have the 90’ lots through the whole development and have the park land too. This is valuable land. Please don’t let them waste it. Holly Nelson PLANNING COMMISSION STAFF REPORT Tuesday, July 17, 2018 Subject Approval of Planning Commission minutes dated June 19, 2018 Section APPROVAL OF MINUTES Item No: D.1. Prepared By Nann Opheim, City Recorder File No: PROPOSED MOTION: The Chanhassen Planning Commission approves the minutes dated June 19, 2018. ATTACHMENTS: Summary Minutes Verbatim Minutes CHANHASSEN PLANNING COMMISSION REGULAR MEETING SUMMARY MINUTES JUNE 19, 2018 Chairman Aller called the meeting to order at 7:00 p.m. MEMBERS PRESENT: Andrew Aller, Steve Weick, Nancy Madsen, John Tietz, and Mark Randall MEMBERS ABSENT: Mark Undestad and Michael McGonagill STAFF PRESENT: Sharmeen Al-Jaff, Senior Planner; MacKenzie Walters, Planner; and George Bender, Assistant City Engineer PUBLIC HEARING: 3861 RED CEDAR POINT ROAD: SUBDIVISION AND PRELIMINARY PLAT WITH VARIANCE. MacKenzie Walters presented the staff report on this item. Commissioner Madsen asked for clarification on the use of partial cul-de-sacs as it relates to lot widths. Tom Gonyea, representing Estate Development Corporation, explained how this subdivision will be a nice addition to the neighborhood. Chairman Aller opened the public hearing. No one spoke and the public hearing was closed. Tietz moved, Madsen seconded that the Chanhassen Planning Commission recommends that the City Council approve the preliminary plat for a two lot subdivision and a 10.04 foot lot frontage variance for Lot 1, Block 1, Red Cedar Point as shown on the plans dated May 15, 2018 subject to the following conditions of approval and adopts the Findings of Fact and Recommendation: Building: 1. Provide a 1:200 “clean” plat drawing. 2. Demolition permits required for the removal of any existing structures. 3. Buildings may be required to be designed by an architect and/or engineer as determined by the Building Official. 4. A final grading plan and soils report must be submitted to the Inspections Division before permits can be issued. 5. Retaining walls over four feet high require a permit and must be designed by a professional engineer. 6. Each lot must be provided with separate sewer and water services. Engineering: Planning Commission Summary – June 19, 2018 2 1. Drawing 4 – Site and Utility Plan: a) Change detail 1006 (Gate Valve and Box Installation) to detail 1005 (Water Service). b) Add City details 5202A (Bituminous Street Patching), 5203 (Curb and Gutter), 5208 (Concrete Driveway), 5209 (Bituminous Driveway), and 5221 (Tie Card). c) An abandoned watermain exists between the sanitary sewer and the watermain. Add note to make this known to the sanitary sewer and water installation contractor. 2. Drawing 5 – Grading, Drainage, and Erosion Control Plan: a) Add City details 5301 (Rock Construction Entrance) and 5302B (Erosion Control for Individual Lots) b) Provide geotechnical report. c) Include first floor elevation of buildings on adjacent lots. d) Existing and proposed elevations shall be shown at each lot corner and top of the curb at the lot line extension. e) Identify proposed soil stockpile locations. f) If importing or exporting soils for the development of the site is necessary, the applicant will be required to supply the City with a detailed haul route and traffic control plan. 3. SAC and WAC fees due at the rate in force at time of building permit application. Environmental Resources: 1. Tree protection fencing must be properly installed at the edge of the grading limits as shown on the plans dated 5/15/18. This must be done prior to any construction activities and remain installed until all construction is completed. Any trees lost to construction activities shall be replaced. 2. No equipment or materials may be stored within the tree protection area. 3. One tree must be planted in the front of each yard, as per city requirements. Parks: 1. Park dedication fees for one lot at the rate in force at the time of final plat approval. Planning: 1. An escrow of 110 percent of the estimated demolition costs for the demolition of the detached garage on lot 2, block 1 must be received, and the detached garage must be removed within four months of the approval of the final plat. Water Resources: Planning Commission Summary – June 19, 2018 3 1. All permits and approvals must be received from other regulatory agencies prior to issuing permits. 2. Must show existing and proposed drainage. 3. The applicant will need to pay the surface water management (SWMP) fee for 1.010 acres at the rate in force at the time of final plat approval. All voted in favor and the motion carried unanimously with a vote of 5 to 0. APPROVAL OF MINUTES: Commissioner Weick noted the verbatim and summary Minutes of the Planning Commission meeting dated June 5, 2018 as presented. COMMISSION PRESENTATIONS. None. ADMINISTRATIVE ITEMS. MacKenzie Walters provided a City Council action update and discussed future Planning Commission agenda items. Commissioner Madsen moved to adjourn the meeting. All voted in favor and the motion carried unanimously with a vote of 5 to 0. The Planning Commission meeting was adjourned at 7:25 p.m. Submitted by Kate Aanenson Community Development Director Prepared by Nann Opheim CHANHASSEN PLANNING COMMISSION REGULAR MEETING JUNE 19, 2018 Chairman Aller called the meeting to order at 7:00 p.m. MEMBERS PRESENT: Andrew Aller, Steve Weick, Nancy Madsen, John Tietz, and Mark Randall MEMBERS ABSENT: Mark Undestad and Michael McGonagill STAFF PRESENT: Sharmeen Al-Jaff, Senior Planner; MacKenzie Walters, Planner; and George Bender, Assistant City Engineer PUBLIC HEARING: 3861 RED CEDAR POINT ROAD: SUBDIVISION AND PRELIMINARY PLAT WITH VARIANCE. Walters: Thank you very much. This is Planning Case 2018-10. It’s a subdivision with a lot width variance for 3861 Red Cedar Point Road. The applicant is requesting a 10.04 foot lot frontage variance for Lot 1, Block 1 in this proposed 2 lot subdivision. Thank you and Sharmeen has pointed I need to get it off our holding screen. Thank you for that. Right here you can see the proposed, the location for the subdivision. This is a little over an acre parcel in the Red Cedar Point neighborhood. The parcel is zoned residential single family. There’s a section of property zoned planned unit development residential to the north. With regards to the preliminary plat the minimum lot area required for residential single family zoning is 15,000 square feet. The proposed area for Lot 1, Block 1 is 20,417 and for Lot 2, Block 1 is 23,572. The proposed lot width for Lot 1 is 79.96 feet which would require a variance from the 90 foot standard. Lot 2 would meet that standard and both properties significantly exceed the 125 foot minimum depth. There are two other kind of miscellaneous code provisions that pertain to this case. The city code does not allow for the presence of an accessory use without a primary use so you can’t have a garage without a house on a lot and it does not allow for a single family dwelling without a 2 car garage. So in order to avoid creating a non-conformity with this subdivision the applicant will need to remove the existing garage and then construct a 2 car garage to serve the existing house which they’re proposing to retain. One of the other things we look at in a preliminary plat subdivision request is whether or not it meets the City’s tree preservation ordinance. The tree preservation ordinance requires a minimum canopy coverage of 35 percent. The property currently has 42 percent canopy coverage. The applicant is proposing to remove the trees here but has submitted lot cover calculations showing that the property would still have 36 percent so it meets that ordinance. They would be required to install one tree in the front yard if none are present under ordinance as well. The other thing we look at is whether or not they have access to park infrastructure. In this case the proposed subdivision would be served by both Roundhouse Park to the northwest and the Minnewashta park pedestrian trail Chanhassen Planning Commission – June 19, 2018 2 which is in green. In terms of utilities and access, the property has access off of Red Cedar Point Road so no new street would need to be constructed and it is served by city water and sewer. The existing house would continue to use it’s existing connections and the new house would need to tie into those lines. In terms of right-of-way streets and easements, the property has an existing 595 square foot easement for Red Cedar Point. The applicant will be dedicating 10 foot front and 5 foot side and rear drainage and utility easements. The City is not requesting the dedication of any existing right-of-way. As the report mentions Red Cedar Point Road is substandard with 50 feet of right-of-way instead of the traditionally, instead of the currently required 60. However because there is no opportunity for the other properties on the southeast to subdivide and there’s no way the City will ever be able to get that additional right-of-way we’re not going to be asking for any additional right-of-way at this time because we couldn’t find a way to widen the road. In terms of the requested variance, they are requesting a 10.04 foot front lot line width variance for Lot 1, Block 1. The justification is this is a pretty straight forward subdivision. If the applicant conducted a partial cul-de-sac configuration and they presented two they would be able to meet the requirements of the subdivision ordinance without needing the variance. They would have 90 feet front lot width. Because this property is located within the shoreland overlay district for both Lake St. Joe and Lake Minnewashta staff feels it’s important to do everything possible to minimize the creation of extra impervious surface and by granting this 10 foot variance staff estimated it would save about 1,500 to 2,000 square feet of impervious surface that’d be required to create the cul-de-sac and meet the subdivision requirements. The other alternative is a flat lot which would in itself require a variance from the city’s subdivision ordinance and also create lot lines that can cause issues down the road for future property owners. The proposed variance does still leave room for a 60 by 60 building pad and can accommodate the house and 2 car garage so it would be able to meet all current setbacks and looking through both properties within the 500 foot notification area and the neighborhood at large, there are numerous properties that do not meet the 90 foot lot width so it is in keeping with the character of the neighborhood. Staff did receive some comments and concerns from some of the neighbors. One of the concerns that was brought up was concern about establishing a precedent of not meeting lot width. Because lot width in this case could be met through the use of the eyebrow or partial cul-de-sac allowing the property to be subdivided without a variance we don’t believe this establishes a precedent that we’re not going to require properties to meet the lot width to be subdivided. With regards to future issues with setbacks, the parcel is able to meet the required side, front and rear setbacks. The applicant is not requesting a setback variance and staff would not recommend approval of any that were requested subsequently. The lot can accommodate a 60 by 60 building pad. It does meet the tree preservation ordinance requirements. If any trees are lost during construction they would need to be replaced. There have been some historic issues with erosion control in the neighborhood. Engineering and building will monitor those throughout the construction and have been made aware of that. Looking over the proposal for the variance and subdivision staff, as I kind of went through all these so I won’t go into too much detail but we do feel the variance is in keeping with the neighborhood. There are other properties including one adjacent to the west that have similar lot widths of around 80 feet. The subdivision can go forward without a variance with the use of a partial cul-de-sac and staff believes that minimizing impervious surface in the shoreland is of Chanhassen Planning Commission – June 19, 2018 3 greater importance than the 90 foot minimum lot width. And both lots are well in excess of the minimum lot area with over 20,000 square feet compared to the required 15,000. The subdivision meets all the requirements of city code and for that reason staff is recommending approval of preliminary plat with the variance. I’d be happy to take any questions at this time. Aller: Thank you. Does anybody have questions of staff? Seeing none we’ll have the, oh Commissioner Madsen. Madsen: MacKenzie I see that it says that they can build that partial cul-de-sac without any kind of variance so any development could just put a partial cul-de-sac on their lot off any road? Walters: Not necessarily. In this case they can do it and meet the 90 foot but yeah they could choose to dedicate the extra right-of-way to the City in order to meet that frontage. Madsen: And there’s no rules about having several partial cul-de-sacs on a road if various lots wanted to subdivide? Walters: I’ll defer to Sharmeen. She’s a little more familiar with that aspect of the ordinance. Al-Jaff: If you look at areas along Lake Lucy Road, that would be a perfect example. We have a few eyebrows that we look at the situation. Can they put a full pledged cul-de-sac? Does it make sense for them to put a full pledged cul-de-sac and if the answer is no, then we will allow an eyebrow. In this case they would be able to put in the entire bubble of a cul-de-sac. The way the ordinance reads is if that road is not going to go anywhere, let’s assume that there is a wetland further down, which is the case with this one, then they would be able to put a bubble for a cul-de-sac and would be able to meet the ordinance requirements by doing it. Madsen: Okay thank you. Al-Jaff: Sure. Aller: Any additional questions of staff? Okay we’ll have the applicant come forward and make a presentation should they decide to do so. Welcome sir. Tom Gonyea: Good evening Mr. Chair, members of the commission. Tom Gonyea representing Estate Development Corporation, 15250 Wayzata Boulevard in Minnetonka. You know I think MacKenzie went over the matter pretty well. I really don’t have too much to add to it. I think it’s going to be a nice addition to the area. The existing house that’s there is actually a nice house. The garage could use a little help so the proposal is to take the garage down and that’s going to sit on the proposed new lot but the house itself is actually in very good condition inside and out and adding a 2 car garage on should enhance the value of that quite a bit I guess so anyways if there’s any questions of council or staff. Chanhassen Planning Commission – June 19, 2018 4 Aller: Can you tell me how you come to the decision to subdivide as opposed to use an eyebrow or what did you use in making that decision? What were you looking at? Tom Gonyea: You know I guess we looked at it a few different ways. We looked at the flag lot option. There’s a potential to do that within the ordinance. We didn’t pursue it that much. And then we looked at the eyebrow and we came to the conclusion that it probably wasn’t worth adding the road. It was within the shoreland district and that was actually brought up you know between my engineer and Sharmeen are the ones that looked to that and it just kind of doesn’t need it. If you look at some of the other properties in the area it seems to work pretty well with the smaller lot width as it stands so I guess you know I felt it was probably a better way to do it. You’re not adding infrastructure. It’s less disruptive and it should provide a nice building pad for a nice house. Aller: Thank you. Any additional questions for the applicant? Tietz: Yeah just a question. Aller: Commissioner Tietz. Tietz: It looks like the, it says sample building. It looks like it’s more than a sample buildout. Is that a proposed house? It seems to just max the site. You really property line to property line is built within, is that what’s going to be proposed? Tom Gonyea: Mr. Chair, members of the commission. That’s truly proposed. I don’t have a house plan in mind at all. I haven’t selected a builder to build it. What they come up with for a final design certainly will meet the requirements but that is not representative of what will be built there. Tietz: Okay. Aller: Any additional questions? Thank you sir. Tom Gonyea: Thank you. Aller: Okay we’ll open up the public hearing portion of this item. Any individual wishing to speak either for or against the item can do so at this time. Seeing no one come forward we’ll close the public hearing portion of the item and open it up for commissioner comments. And potential action. I’ll start off by saying I think it’s great that it is being considered and that you have a homeowner and their representatives that come in and work with the City on a solution that is a better solution than one they can do anyway and on that fact alone I would almost give you the nod but it does fulfill all the other requirements for a variance in that it’s the nature of the piece of property itself and it’s a reasonable use of the property and the other items that we would be looking at but I certainly agree with the minimizing of the impervious surfaces that Chanhassen Planning Commission – June 19, 2018 5 would be used and the benefits to the shoreland management districts that were considered that it tips me in favor of approval and I’ll be voting that way so. Any additional comments? Concerns. Commissioner Tietz. Tietz: Just a, well just a observation. Obviously they want to maximize the lot for sale with new construction but it, the plans presented here limits any really further construction on, adjacent to the existing house. That 2 car garage kind of maxes out side to side you know lot setbacks so obviously they wanted to max the for sale site but you could have had 90 feet for the existing home and a reduced lot for the for sale site. And they still would have met all the standards. Just a comment. Weick: They still would have needed a variance right? Tietz: Yeah either way. Weick: You’re just saying switching. Tietz: It’s just flipping the 90 foot. Weick: I gotch ya, yeah. Aller: I guess I look at it that it should be presumed that a homeowner’s going to try to maximize the value of their property and maximize the space used so whatever is put on there we have representation in the city and they would have to come before us if they wanted a variance or to alter those setbacks when they’re in use and it sounds like most likely this board as established and the staff would not look favorably on that kind of request so. Any additional comments? Hearing none I’ll entertain a motion. Tietz: I’ll read it. Aller: Commissioner Tietz. Tietz: The Chanhassen Planning Commission recommends that the City Council approve the preliminary plat for a two lot subdivision and a 10.04 foot lot frontage variance for Lot 1, Block 1, Red Cedar Point as shown on the plans dated May 15, 2018 subject to the conditions of approval and adopts the Findings of Fact and Recommendation. Aller: I have a motion. Do I have a second? Madsen: Second. Aller: Having a valid motion by Commissioner Tietz and a second by Commissioner Madsen, any further discussion? Chanhassen Planning Commission – June 19, 2018 6 Tietz moved, Madsen seconded that the Chanhassen Planning Commission recommends that the City Council approve the preliminary plat for a two lot subdivision and a 10.04 foot lot frontage variance for Lot 1, Block 1, Red Cedar Point as shown on the plans dated May 15, 2018 subject to the following conditions of approval and adopts the Findings of Fact and Recommendation: Building: 1. Provide a 1:200 “clean” plat drawing. 2. Demolition permits required for the removal of any existing structures. 3. Buildings may be required to be designed by an architect and/or engineer as determined by the Building Official. 4. A final grading plan and soils report must be submitted to the Inspections Division before permits can be issued. 5. Retaining walls over four feet high require a permit and must be designed by a professional engineer. 6. Each lot must be provided with separate sewer and water services. Engineering: 1. Drawing 4 – Site and Utility Plan: a) Change detail 1006 (Gate Valve and Box Installation) to detail 1005 (Water Service). b) Add City details 5202A (Bituminous Street Patching), 5203 (Curb and Gutter), 5208 (Concrete Driveway), 5209 (Bituminous Driveway), and 5221 (Tie Card). c) An abandoned watermain exists between the sanitary sewer and the watermain. Add note to make this known to the sanitary sewer and water installation contractor. 2. Drawing 5 – Grading, Drainage, and Erosion Control Plan: a) Add City details 5301 (Rock Construction Entrance) and 5302B (Erosion Control for Individual Lots) b) Provide geotechnical report. c) Include first floor elevation of buildings on adjacent lots. d) Existing and proposed elevations shall be shown at each lot corner and top of the curb at the lot line extension. e) Identify proposed soil stockpile locations. f) If importing or exporting soils for the development of the site is necessary, the applicant will be required to supply the City with a detailed haul route and traffic control plan. 3. SAC and WAC fees due at the rate in force at time of building permit application. Environmental Resources: Chanhassen Planning Commission – June 19, 2018 7 1. Tree protection fencing must be properly installed at the edge of the grading limits as shown on the plans dated 5/15/18. This must be done prior to any construction activities and remain installed until all construction is completed. Any trees lost to construction activities shall be replaced. 2. No equipment or materials may be stored within the tree protection area. 3. One tree must be planted in the front of each yard, as per city requirements. Parks: 1. Park dedication fees for one lot at the rate in force at the time of final plat approval. Planning: 1. An escrow of 110 percent of the estimated demolition costs for the demolition of the detached garage on lot 2, block 1 must be received, and the detached garage must be removed within four months of the approval of the final plat. Water Resources: 1. All permits and approvals must be received from other regulatory agencies prior to issuing permits. 2. Must show existing and proposed drainage. 3. The applicant will need to pay the surface water management (SWMP) fee for 1.010 acres at the rate in force at the time of final plat approval. All voted in favor and the motion carried unanimously with a vote of 5 to 0. Aller: The motion carries and then I would just tack on a little recommendation that a notation be made of the community’s request that we keep an eye on the silt fences and there’s a history in that area of having problems and it seems like the plan itself is doing a lot to protect the surface area and the surface water management and we should be doing our best to enforce those requirements as we are imposing them on the construction sites. Tom Gonyea: Thank you. APPROVAL OF MINUTES: Commissioner Weick noted the verbatim and summary Minutes of the Planning Commission meeting dated June 5, 2018 as presented. COMMISSION PRESENTATIONS. None. Chanhassen Planning Commission – June 19, 2018 8 ADMINISTRATIVE ITEMS. Aller: MacKenzie do we have an update? Walters: We do. So the first administrative presentation is the City Council action update. Just letting you know that the craft alcohol production ordinance, the daycare in office and institutional and on site pick up and drive up signs were all approved on the City Council consent agenda on Monday, June 11th so those are now in enforce. Aller: Awesome. Any future Planning Commission agenda items that we need to discuss for the record? Walters: Just letting you know that, well July 3rd there is no meeting so everyone gets to enjoy the holiday. On July 17th there were will be public hearings on the 2040 Comprehensive Plan. Not too much has changed since last time you saw it but we’ll go over what’s new. Potential for a PUD amendment for Avienda. No that was removed. Yeah sorry. Yeah that would not be happening on July 17th. I apologize for that. Control Concepts site plan review as submitted so that is on the schedule. And then the planned unit development concept review for the Galpin property which is now up on the website to go over and that would be the future agenda items. Aller: Awesome. So those individuals that at home or present that want to see what’s coming up please visit the website and take a look at those reports as they come in and the information, packets as presented so that you can ask questions as they arise. Any additional business? Tietz: Mr. Chairman? Aller: Yes Commissioner Tietz. Tietz: Could I just ask a question of MacKenzie. I don’t know MacKenzie have there been any updates on the Galpin property? New concepts? Any further discussions with city staff on what’s going on there? Walters: Not to my knowledge. Everything I’m aware of us receiving is up on the website so my recommendation would be look that over and contact Director Aanenson with any questions. Tietz: Yeah, okay. Thank you. Aller: Great, with no additional business to be had I’ll entertain a motion to adjourn. Commissioner Madsen moved to adjourn the meeting. All voted in favor and the motion carried unanimously with a vote of 5 to 0. The Planning Commission meeting was adjourned at 7:25 p.m. Chanhassen Planning Commission – June 19, 2018 9 Submitted by Kate Aanenson Community Development Director Prepared by Nann Opheim PLANNING COMMISSION STAFF REPORT Tuesday, July 17, 2018 Subject City Council Action Update Section ADMINISTRATIVE PRESENTATIONS Item No: F.1. Prepared By Jenny Potter, Sr. Admin Support Specialist File No: PROPOSED MOTION: ATTACHMENTS: City Council Action Update City Council Action Update MONDAY, JUNE 25, 2018 CITY COUNCIL MEETING: 1. Pervious Pavers Code Amendments – Approved 2. Beekeeping Code Amendments – Approved 3. Xcel Energy Transmission Line – Approved 4. Avienda – Grading Permit - Approved The minutes for this meeting can be viewed from the City’s website. Go to www.ci.chanhassen.mn.us, and click on “Agendas and Minutes” from the left-side links. g:\plan\forms\city council action update.doc PLANNING COMMISSION STAFF REPORT Tuesday, July 17, 2018 Subject Future Planning Commission Agenda Items Section ADMINISTRATIVE PRESENTATIONS Item No: F.2. Prepared By Jenny Potter, Sr. Admin Support Specialist File No: PROPOSED MOTION: ATTACHMENTS: Future Planning Commission Agenda Items Future Planning Commission Agenda Items Schedule DATE ITEMS Work Session Items Possible Future Items (Date Unknown) • Moon Valley – IUP amendment • Santa Vera Apartments – Site Plan Review – PUD • Holasek – United Properties • Beehive 3rd Addition – Site Plan Review • 6480 Oriole Ave. - Subdivision • City Code updates • 330 Pleasant View Road – subdivision • Frontier – subdivision • Eidsness – subdivision with variance • PUD Amendment Avienda January 2 January 22 CC (Mark U. absent) • 7052 Minnewashta Pkwy – setback variances to build a home • 3617 Red Cedar Point Road – Variance (2 car garage and setback) • 531 West 79th Street – Panera site plan review January 16 February 12 CC • 1651 Motorplex Ct – LaMettry RLS (subdivision) • 7700 Quattro Dr. – CUP • 7721 Erie Ave. – variance • 7555 Walnut Curve – variance for pool February 6 February 26 CC (Andrew absent) • Cancelled February 20 March 12 CC (Mark R. and Mark U. absent) • Arbor Glen – PUD Amendment • Annual Report • Interview New Commissioners (immediately following meeting) March 6 March 26 (John & Nancy absent) • Cancelled March 20 April 9 CC (Mark U. absent) • Cancelled April 3 6:00 PM start time WORK SESSION • Review Comp Plan – jurisdictional comments • Local Water Management Plan – update • Oath of Office for new commissioners • Adopt Bylaws • Election of Chair April 17 May 14 CC • MEETING CANCELLED (NO ITEMS SUBMITTED) April 23 CC (Andrew absent) • Joint Meeting with City Council May 1 May 29 (Tuesday) CC • MEETING CANCELLED (NO ITEMS SUBMITTED) Future Planning Commission Agenda Items Schedule DATE ITEMS May 15 June 11 CC • Public Hearing - Code Amendment – pervious pavers & Brewery Ordinance, adult daycare OI district amendment, beekeeping, Retail Pickup Signage June 5 June 25 CC • 1110 Lake Susan Drive – lot cover variance for shed • 340 Sinnen Circle - front setback & lot cover variance for garage expansion • Transmission Line – Audubon & Lyman – CUP June 19 July 9 CC (Michael absent) • 3861 Red Cedar Point Road – subdivision with variance July 3 • No Meeting July 17 August 13 CC (Michael absent) • Control Concepts – site plan review • 2040 Comprehensive Plan • Galpin Property – PUD concept review August 7 August 27 CC • Glendale Drive – subdivision August 8 • Joint Commissions Tour August 21 September 10 CC • September 4 September 24 CC • September 18 October 8 CC • October 2 October 22 CC • October 16 November 13 CC • November 6 • No Meeting - Election November 20 December 10 CC • December 4 January 14 CC • \\cfs5\cfs5\shared_data\agendas\pc\2018\future planning commission agenda items 2018.docx