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79-03 - Sunrise Beach SUB pt 3DNR-8 STATE DEPARTMENT Metro Region Waters, PHONE; __—, 296-7523 !� J Mr. Robert Waibel Land Use Coordinator City of Chanhassen 7610 Laredo Drive Chanhassen, Minnesota 55317 OF NATURAL . RESOURCES 1200 Warner Road, St. Paul, MN 55106 File No. June 9, 1980 LAKE ANN PUD, LAKE SUSAN SOUTH PUD, LAKE SUSAN WEST PRD RECOMMENDATIONS Dear.Mr. Waibel: The above named proposed Planned Unit Developments-(PUD) have been reviewed by -this Department for compliance with Standards and Criteria for.the Management of Municioal Shoreland Areas of Minnesota (Minn. Reg. NR 83 e _as required by the city's shoreland.management ordinance. Based on this review, the Department of Natural Resources hereby makes the following recommendations: 1) The developments must.be serviced by a public sanitary sewer system. . 2) The parks,. open space, and lakeshore easements must be maintained as depicted on the plans submitted by Greg_Ingraham, landscape architect, to the DNR.Regional Office on March 11, 1980. It is our understanding with the City of Chan- hassen, per conversations between you and David Leuthe,.DNR land use hydrologist, that the lake -- shore easements will be deeded to the city or be restrictive on the abutting.pr_operty owners so as not to allow individual boat docks, beach sanding projects -or any structures or uses other than those approved and placed by the city as part of the proposed trail system. 3) Development densities within -the PUD and .within shoreland areas have been analyzed (see attachment #1) and found to be acceptable.. Any alteration of any project which would cause an -intensification of density within the shoreland area (1000' from the Ordinary High Water Level (OHW) of the lake) would require prior written approval of this De- partment. 4) Since stormwater management plans, grading plans, and erosion _control _plans for the three projects were.not available at this timer we are conditioning DNR approval of these three areas on approval of the plans by Riley -Purgatory Creek Watershed District. JUN1960 RECMVED 14UA6V '•HAS01W, , MM" _4 AN EQUAL OPPORTUNITY EMPLOYER 113 ROBERT vdAIBEL JUNE 9, 1980 Page 2 In discussing our areas of -concern (steep slopes,* impervious -surface run-off, and erosion problems) with the Watershed District Engineer, Bob Obermeyer, we agreed that the Watershed District's concerns were similar to ours and that the permit review by the District would adequately address our concerns. Any substantial changes, including additional buildings and/or additional units, in the project plans for any of the three developments would -require. further review and approval by this Department prior to -final city approval. We request that you and/or other city officials take whatever actions that are appropriate to ensure the above conditions are meta This letter does not constitute official.approval of the plans -by this Department. It is the opinion of this Department that our approval of preliminary plans must wait-untilthe environmental review process-bas.been completed.' Please contact David Leuthe in our.office if you have any questions regarding this approval or if we can be of any assistance in this.or other shoreland manage- ment matters. KL/DPL/ch cc: Steve Prestin, Land Use Management Section Ed Dunn, Dunn. & Curry Bob Obermeyer, Riley -Purgatory Creek WSD_- _r4 a Sincerely, Kent Lokkesmoe Regional Hydrologist ATTACHMENT #1 Chanhassen PUD's Lake Ann DNR-RD sewered backlots Total PUD = 2.9 u/a Within shoreland area DNR standards = 2.9 u/a Lake Susan South DNR-RD sewered backlots Total PUD = 2.9 u/a Within shoreland area DNR standards =.2.9 u/a Lake Susan West DNR-RD sewered backlots Total PUD = 2.9 u/a Within shoreland area DNR standards = 2.9 u/a Development Densities* ( densities have been determined by scaling distances off" of the illustrative site plans) Proposed Developments 3.66 u/a Within shoreland area Proposed standards = 2.45 u/a 99 S.F..units - 42 acres 16 Dupl. units- 4.1 acres 16 Quad units -.2.1 acres Park easements-. 5.2 acres 131 units -53.14 acres Proposed Developments 2.7 u/a Within shoreland area Proposed standards = 5.98 u/a 92 Townhse units -- 13 acres 64 Apt. units - 6 acres. 11 Single F units- 4.1 acres Park easements - 4.82-acres 167 units 27.92 acres Proposed Developments 2.99 u/a Within shoreland area Proposed standards = 4.68 u/a 138 Dupl. units - 28.73 acres 72 Townhse units- 11 acres 44 Quad units - 6.2 acres - Park easements - 8.4 acres "254 units —54-.3-3 acres r, SPECIAL CHANHASSEN CITY COUNCIL MEETING JUNE 22, 1981 :Mayor Hamilton called the meeting to order at 7:30 p.m. with the following members present: Councilwoman Swenson, Councilmen Neveaux, Geving, and Horn. The meeting was opened with the Pledge to the Flag. PUBLIC HEARING ,;'TER AND SEWER IMPROVEMENTS CHANHASSEN AMERICAN LEGION POST #580 The public hearing was opened with the following interested persons present: Lewis Woitalla, 6740 Powers Blvd. Robert VanSlyke, 8116 Wentworth Ave. So., Bloomington '-Ir. Woitalla, representing the Legion, asked if the Sinnen property would be assessed as a part of this project. The City Attorney stated that a decision would not be made until the assessment hearing which would be held after the project is completed. Bill Monk, City Engineer, presented the feasibility study. The total estimated cost of the project is $37,026. Mr. Woitalla presented a quote he had received to complete the project in an approximate amount of $16,520. Council members expressed concern about assessing the Sinnen property if the sewer line is not placed on the property line. The City Attorney explained that the Council under State Statute can assess non -abutting properties. Mayor Hamilton requested a map showing where sewer lines would be located to serve the Sinnen property. Councilman Geving moved to continue the public hearing to July 6, 1981, at 7:30 p.m. Motion seconded by Councilman Horn.. The.following voted in favor: Mayor Hamilton, Councilwoman Swenson, Councilmen Neveaux, Geving, and Horn. No negative votes. Motior carried. Property owners involved in the .water and sewer project will be notified by mail of the continuance. CHAPARRAL ON LAKE ANN FINAL DEVELOPMENT PLAN: Ed Dunn, Greg Frank, and Bill Jensen were present. Councilwoman Swenson moved to approve the final development plan for Chaparral on Lake :s ,bhlan on Council Exhibit A consisting of the proposed plat of Chaparral on -=-e .inn Gated May 26, 1981, as prepared by Suburban Engineering, Council Exhibit B •.;:sting of Phasing and Utility Plan for Chaparral on Lake Ann dated 'May 26, 1981, ruparc:d by Suburban Engineering (Phase 10 be substituted for Phase 5. Old Phase 5 5A.) Council Exhibit C showing the Floor Plan and Landscape Plan for `0 series structures, prepared by D. R. Griswold and Associates dated June 16, 1981, ':ibit D being a sche:aatic drawing of exterior elevation of 800 series 01.ru,:tures proposed. Said plans are approved subject to the conditions I - 8 r.:icJ by the City Planner in his report of June 18, 1981, by the Planning recommended conditions 2 and 3 as stated in the City Planner's report of •: �.ig, 1981, and subject to the City Engineer's conditions 3, 4, 6, 7, 8, 9, and 1-0 of ;,is ro port of June 18, 1981. Items 1, 2, and 5 of the City Engineer's report '"z cc�=ents only. Council approval is also contingent upon the donation of a^pro.:imately 20 acres of park land along the western edge of the development, the (ionatioll of approximately four acres of shoreland property along Lake Ann measuring '0 :',eL %,ide, the ,ark donation fee of 125.00 1 $ per dwelling unit, exclusive of ,;,..Valonment on Outlot B, and City purchase of approximately 11 acres adjoining t;:is property and Lake Ann Park. The access of Pueblo Drive at Highway 5 shall be ,estriated Lo right infriglit out turning movements and shall be further reviewed by the Council at the time Phase 9 is platted. The extension of the road serving :1.: 9 F 6l 3 Council Meeting June 22, 1981 -2- shall be required in the future prior to or at the approval of development of Phase 9 and/or Outlot B. The developer shall work with the City Engineer in preparation of grading plans in order to assist the City in rough grading of the Lake Ann Park expansion area. The Council reserves the right to review all substantial changes in building designs and any changes in phasing in the overall project. After the developer has signed the development contract said contract will be presented to the Council for review and approval. Motion seconded by Councilman Geving. The following voted .in favor: Councilwoman Swenson, Councilmen Neveaux and Geving. Mayor Hamilton and Councilman Horn voted no. Motion carried. Councilman Horn - This body takes away the function of the Planning Commission in this case and I don't think we want to set that kind of precedent.' I think unless we enforce, with developers coming in, the fact that they have to comply with Planning Commission recommendations we might as well disband that body because they are going to be completely ineffective and as far as the continual references to the access on Highway 5, we have got suckered into this thing last time the same way and I don't think we will ever see that come out of there. I think the access situation on Highway 5 is deplorable today and we are making it worse. Highway 5 is our main artery and I think we should do everything we can to protect it and I don't think we did that. Mayor Hamilton - This is definitely a Planning Commission item that should have gone back to the Planning Commission. We have a Planning Commissi that is in existance to review these things and we have done exactly'the same thing we did on Fox Chase. ECONOMIC DEVELOPMENT DISTRICT SOUTH OF HIGHWAY 5 AND ABUTTING EXISTING TAX INCREMET DISTRICT: Arijs Pakalns, BRW, presented a feasibility study to evaluate what the implications are and what the consequences are if the Council wanted to expand the district. Councilman Horn moved to order a public hearing for July 27, 1981, to consider the expansion of Tax Increment District 2 to include all properties in the Municipal Development District lying south of Highway 5 and, if necessary, to include the drainage area that runs to Rice Marsh Lake and to include public improvements #1, 2, and 3 as listed in the June 22, 1981, feasibility study prepared by BRW. Motion seconded by Councilman Neveaux. The following voted in favor: Mayor Hamilton, Councilwoman Swenson, Councilmen Neveaux, Geving, and Horn. No negative votes. Motion carried. MUNICIPAL FACILITIES BUDGET AMENDMENT: The City Manager presented a recommended revised Public Works/Fire Station/Library and City Hall Budget for Council review. The City Manager presented a list of eight miscellaneous items to be included in the City Hall. Councilman Neveaux moved to accept the following items: 1. Three oak shelves and closet poles finished and installed. -Charge to Boarman Architects. 2. A 36" x 48" cedar frame bulletin board. 3. Two benches. 4. Glass divider for open office area with 5. Planter bench by stairs in cedar. 6. Oak trophy case finished as per plan. 7. 2 Chamber desks -without gate. 8. Finishing for cedar. Motion seconded by Councilman Geving. The wood frame installed. Delete. City Manager will get another quotation• following voted in favor: Mayor Hamil CITY OF = 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937-1900 PLANNING REPORT TO: Don Ashworth, City Manager FROM: Bob Waibel, City Planner DATE: June 18, 1981 SUBJ: Final Development Plan Review Continutation, Chapparal on Lake Ann PLANNING CASE: P-646 APPLICANT: Dunn & Ckirry Real Estate Management, Inc. At it's meeting of May.11, 1981, the City Council recommended that the applicant prepare plans that would adjust the land use allocation for the subject proposal to 170 single family 78 twin home, 152 quadraminium and 200 8-plex units. The applicant has provided an updated proposed plat, 8-plex arch- itectural renderings and site plan as requested by the City Council for further final development plan consideration. Chancres to Previous Plan 1. Readjustment of Land Uses as stated above. 2. Extension of Pueblo Drive to the southeast for the place- ment of 8-plex units and the placement of 8-plex units in previously described outlot A in the southwestern portion of the subject development. 3. Realignment of Taho Road (previously described as Nachos Court) between Block 7 & 8 to allow for better solar access. 4. Elimination of two cul-du-sacs on the east and west sides 4 of Pawnee Drive East. Comments This office has reviewed the above changes and finds that they are are significantly in accordance with the previous Council 3 Planning Report Chapparal on Lake Ann Page 2 recommendations and finds the proposal acceptable from a planning standpoint. In discussions with representatives of New Horizon Homes, it has been indicated that the 8x's.per unit square footage will vary between 841 square feet to 1,273 square feet depending on the optional floor plans selected by the prospective buyers. The uniform building code does not have any per unit square footage minimums, however the applicant will be required to meet a certain minimum square footages for aspects of interior floor plan. The 8-plex units are proposed to have common ownership of surrounding lands as shown in the outlots indicated on the attached plans. Each unit is proposed to have a single garage with one additional parking space on the asphalt apron between structures. Additionally two additional spaces per structure are proposed to be provided at the rear of said asphalt apron. In reviewing th"e landscape plan for the 8-plex, it was noted that the parking areas are approximately 8 feet deficient in clear isle width. The applicant has indicated that they plan to place the structures such to provide for a separation of a minimum of 115 feet between center lines of structures. This should offset the deficiency noted above and will provide for an additional parking space per unit at the rear of the parking apron. Attached you will find the report from the City Engineer dis- cussing several of the Engineering concerns yet to be resolved. Previous Staff Condition for Approval (Continued to be recommended a part of any approvals) 1. Inclusion of right turn lanes along Route 17/Powers Blvd. 2. Satisfactory compliance with recommendations,of City Engineer. 3. Subject to signing of Developers Agreement & review of the covenants by the attorney. 4. Satisfactory review and approval of the Environmental Assessment Worksheet. 5. Satisfactory review and approval of the Watershed District. 6. Review of building placement and design by the City Planner is recommended. 7. Agreement as development occurs, no single access street no longer than 600 feet will be created. Planning Report Chapparal on Lake Ann Page 3 8. Recognition that development on outlots A & B is con- tingent upon satisfactory site plan review. Previous Planning Commission Conditions for Approval (Con't decision regarding inclusio- 1. Compliance with conditions 1-8 from the BRW/Staff Report dated March 18, 1981. 2. Minimum setback of 100 feet for all units. 3. Subject to approval of housing types i.e, product changes 4. That50o of the units constructed be single family as presented by the developer. CITY OF 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937-1900 TO: Don Ashworth, City Manager FROM: Bill Monk, City Engineer DATE: June 18, 1981 SUBJ: Chaparral on Lake Ann The following comments and conditions are listed to identify the engineer?ng aspect of the proposed preliminary plat: 1. A feasibility study dated March, 1980 was the result of petitions from area property owners to extend a sanitary sewer trunk to serve their properties. The City Council made no commitment to construct this project municipally, but extension of these trunk lines is required to service much of the proposed plat. 2. A question has arisen concerning the City's partici- pation in assuming a portion of the cost to construct Aztec Drive adjacent to the park. 3. The City shall require that construction inspection and staking be controlled by the City and performed by its agent. 4. Utility and drainage easements must be platted where utilities cross lots or follow lot lines as well as easements for the ponding areas. Also, an easement shall be provided across Outlots A and C for extension of sanitary sewer to the Brose property. 5. Trunk watermains are to be constructed within the plat but responsibility for the oversizing costs has not yet been determined. 6. Final construction plans shall be reviewed and approved by this office. Chaparral on Lake Ann June 18, 1981 Page 2 7. Access permits must be secured by the developer from MND©T and Carver County. Right turn lanes shall be constructed at all access road locations. 8. The developer shall be responsible to secure all re- quired agency approvals and comply with their conditions prior to commencement of construction. 9. Aztec Drive from T.H. S to Pueblo Drive, Pueblo Drive, and Aztec Drive from C.R. 17 to Pawnee Drive shall be constructed to a width of 32 feet. 10. A grading plan detailing erosion control shall be submitted for approval with the platting of each phase. 9 t y CITY OF 2_3 CHANHASSEN pub 690 COULTER DRIVE • P O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937-1900 PLANNING REPORT TO: Don Ashworth, City Manager FROM: Bob Waibel, City Planner DATE: June 18, 1981 SUBJ: Final Development Plan Review Continutation, Chapparal on Lake Ann PLANNING CASE: P-646 APPLICANT: Dunn & Curry Real Estate Management, Inc. At it's meeting of May 11, 1981, the City Council recommended that the applicant prepare plans that would adjust the land use allocation for the subject proposal to 170 single family, 78 twin home, 152 quadraminium and 200 8-plex units. The applicant has provided an updated proposed plat, 8-plex arch- itectural renderings and site plan as requested by the City Council for further final development plan consideration. Changes to Previous Plan 1. Readjustment of Land Uses as stated above. 2. Extension of Pueblo Drive to the southeast for the place- ment of 8-plex units and the placement of 8-plex units in previously described outlot A in the southwestern portion of the subject development. 3. Realignment of Taho Road (previously described as Nachos Court) between Block 7 & 8 to allow for better solar access. 4. Elimination of two cul-du-sacs on the east and west sides of Pawnee Drive East. rnmmcn,n +- c This office has reviewed the above changes and finds that they are are significantly in accordance with the previous Council n R MINNESOTA ENVIRONMENTAL QUALITY BOARD ENVIRONMENTAL ASSESSMENT WORKSHEET (EAW) AND NOTICE OF FINDINGS DO NOT WRITE IN THIS SPACE E.R. #: Note: The purpose of the Environmental Assessment Worksheet (EAW) is to provide information on a project so that one can assess rapidly whether or not the project requires an Environmental Impact Statement. Attach additional pages, charts, maps, etc., as needed to answer these questions. Your answers should be as specific as possible. Indicate which answers are estimated. 1. SUMMARY A.. ACTIVITY FINDING BY RESPONSIBLE AGENCY (PERSON) X Negative Declaration (no EIS) EIS Preparation Notice (EIS required) B. ACTIVITY IDENTIFICATION 1. Project name or title: Lake Ann Planned Residential Development 2. Project proposer(s): Dunn & Curry Real Estate Management, Inc. Address: 4940 Viking Drive, Minneapolis, Minnesota 55435 Telephone. number and area code: (612) 835-2808 3. Responsible Agency or Person:. City of Chanhassen Address: 7610 Laredo Drive, Chanhassen, Minnesota 55317 Person in Responsible -Agency (Person) to contact for further information on this EAW: Bob Waibel (612) 937-1900 4. This EAW and other supporting documentation are available for public inspection and/or copying at: Location: City of Chanhassen City Hall Address: 7610 Laredo Drive, Chanhassen, Minnesota 55317 Telephone: (612) 937-1900 Hours: 8:00 a.m. to 4:30 p.m. 5. Reason for EAW preparation X Mandatory Category - cite Petition Other MEQB Rule number(s) - 6 MCAR 3.024B(1)(u): Construction of a resi- dential development of 50 or more residential units, any part of which is within a shoreland'area as defined by Minnesota State 105.485(1974). 6 MCAR 3.024B(1)(t.): Construction of a new or additional residential -2- development consisting of 500 or more units in a sewered area. C. ACTIVITY DESCRIPTION SUMMARY 1. Project location County: Carver. City/township.name: Chanhassen Township number: 1-16 (North) Range number: 23 West` Section.number(s) 11 Street address (if in city) or.legai description: The property which -is the.site of the project is legally described :i'n- documentation.available for public inspection at Chanhassen'City.Ha.11. All of the property is located within the Urban Service Area as de ' fined.by the MetropolitanCouncil, Development Framework`Guide.:'.-The Urban Service Area J s that portion of the metropolitan area- in which governmental agencies'.should plan to support urban development and redevelopment.' Similarly; all of the property is scheduled for urban services in 1979 pursuant to the Metropolitan Council -approved Chanhassen Interim Comprehensive Sewer Plan. 2. Type and scope of proposed project: Lake Ann is a Planned Residential Development consisting of 140 single family units, 168 two-family units, 172 townhome units and 120 multi- family units on 203 acres of land. The .site has been approved for rezoning from R-lA Agricultural Residential District to P-1 Planned Residential District. (See Exhibit 3 - Overall Site'Plan). The project proposer intends to develop Lake Ann in nine phases over a five to seven year period (Exhibit 4 - Phasing Plan Graphic) in accordance with an overall Land Use Plan to be.approved by the City. Development of each stage of the project will be contingent on receipt of final approval from the City. 3. Estimated starting date (month/year): Spring, 1981. 4. Estimated completion date (month/year): 5 7 years from the Spring of 1981. 5. Estimated construction cost: $48,000,000 6. List any federal funding involved and known permits or approvals needed from each unit of government and status of each: Unit of government (federal, Name or type of permit/approval Status state, regional, local) or federal funding -- -- City of Chanhassen Zoning Approval (Rezoning from R-lA Application Agricultural Residential District to Approved P-1, Planned Residential District) - 3 - 6. Continued Unit of government (federal, state, regional, local) City of Chanhassen City of Chanhassen City of Chanhassen Riley -Purgatory Creek Watershed District Name or type of permit/approval Status or federal fundi na Subdivision Approval Application pending Grading Permit Application pending Building Permit Applications to be filed as de- velopment pro- gresses Land Alteration Permit for Earth Applications to Disturbance Activities be filed as de- velopment pro- gresses Federal Housing Administra- Mortgage Insurance Application tion, United States Depart- pending ment of Housing and Urban Development 7. If federal permits, funding or approvals are involved, will a federal EIS be prepared.under the National Environmental Policy Act? NO X YES UNKNOWN II. ACTIVITY�DESCRIFTION A. INCLUDE -THE FOLLOWING MAPS OR DRAWINGS: 1. A map showing the regional location of the project-. (Exhibit 1.) 2. An original 8-k x 11 section of a U.S.G.S. 7-z minute, 1:24,OOO scale map with -the activity or project area boundaries and site layout delineated Indicate quadrangle.sheet name. (Original U.S.G.S. sheet must be maintained by Responsible Agency; legible copies may be supplied to other EAW distribution points.) (Exht--bit 2.) 3. A sketch map of the;site showing location of structures and including significant natural features (water -bodies, roads, etc.). (Exhibit 3 - Overall Site Plan.) 4. Current photos of the site must be maintained by the Responsible Agency.' -Photos need not be sent to other -distribution points. -4- 5. Exhibit 4 - Phasing Plan Graphic 6. Exhibit 5 - Topography and Vegetation Map Graphic 7. Exhibit'6 - Slopes/Soils'Graphic 8. Exhibit`7 - Preliminary Water.Plan Graphic 9. Exhibit 8 - Preliminary Grading Plan Graphic 10: Exhibit'9 - Preliminary- Storm 'Sewer .Pl.an._Graph i`c 11. Exh;i bi t 10 - Prel imina' y Sani tarv- Sewer, Plan Graphi c 12. Exhibit 11 - Storm Sewer Details with Descriptions B. PRESENT LAND USE 1. Briefly describe the present use of the site and lands adjacent to the site. Portions of the site are presently being used for agricultural pur- poses. The balance of the site is undeveloped grasslands and woodlands. The proposed land use is compatible with existing and planned contiguous development. The Chanhassen Lakes Business Park lies across Highway 5 to the south of the site. The business park is partially developed and at full development will include a mixture of light industry and office uses. To the north of the site is Greenwood Shores, a single family subdivision. Lake Ann and Lake Ann Park border the site on the west. To the east of the site is crop and grassland beyond which lies the proposed HRA Chanhassen Downtown Redevelopment Area. A portion of the project's western border is contiguous with Lake Ann and a portion of the residential development will take place within the shoreland of the lake as defined by Minnesota Stat. 105.485. 2. Indicate the approximate acreages of the site that are: a. Urban developed: b. Urban vacant: c. Rural developed: d. Rural vacant: 203 acres e. Designated Recreation/Open Space: f. Wetlands (Type III, IV, V): -5- g. Shoreland (as defined by Minn. Stat. 105.485 Shoreland Manage- ment Act - land within 1,000 feet from the normal high water mark of a lake): 49.5 acres h. Floodplain (as defined by State Standards and Criteria for Manage- ment of Floodplain areas of Minnesota (100,year)): .85 acre i. Cropland/pasture land: 61 acres j. Forested: 22 acres 3. List names and sizes of lakes, rivers and streams on or near the site, particularly lakes within 1,000 feet and rivers and streams within 300 feet. Lake Ann is an 100 acre lake with an average depthcof twenty (20) feet. Its surface elevation is approvimately 956 feet above mean sea level. According to Minnesota Department of Natural Resources, Lake Ann has a permanent fish population but does.experience some winter kill problems. Water quality parameters for Lake Ann are as follows: Secchi°disc trans- parency - 5 feet; Chlorophyll a - 17 micrograms per liter; total phosphorus - 40 micrograms per liter, Lake Ann is the middle of a chain of three small lakes which form the headwaters of Riley Creek. Lake Lucy drains 1,000 acres and flows into Lake Ann; Lake Ann drains 300 acres and flows into Lake Susan which. discharges into Rice Marsh Lake. The Lake Ann Watershed is comprised primarily of rolling glacial hills with loamy well -drained soils. C. ACTIVITY DESCRIPTION 1. Describe the proposed acrivity, including staging of development (if any), operational characteristics, and major types of equipment and/or processes to be used. Include data that would indicate the magnitude of the proposed activity (e.g., rate of production, number of customers, tons of raw materials, etc.). C Construction of 600 residential units, of which: 120 are' in multi -family form . 172 dwelling units are in townhomes 168 dwelling units -are in duplexes 140 are single-family units 600 total units on 203.acres of land. As shown.on Exhibit 4, the Planned Residential Development will be de- veloped in nine phases commencing along County Road 17. The following is a breakdown -of the nine phases by type of residential unit, total number of units and projected construction starting date. PHASE I - SPRINC 1981 48 Townhome Units 16 Two -Family Units 12 Single -Family Units 76 PHASE 2 80 Townhome Units PHASE 3 42 Single -Family Units PHASE 4 44 TownHome Units 18 Two -Family Units 7 Single -Family Units 69 PHASE 7 48 Two -Family Units PHASE 9 _ 120 Multi -Family Units PHASE 5 68 Two -Family Units PHASE 6 ' 37 Single -Family Units. PHASE 8 42 Single -Family Units 18 Two -Family Units Heavy equipment will be utilized for grading and utility installation. It is anticipated that almost all of the fill required for site prepara- tion will.be available on the site itself. 2. Fill in the following where applicable: a. Total project area: 203 acres or length: b. Number of housing or recreational units: 600 c. Height of structures: 15 ft. avj., 40 ft. max. d. Number of parking spaces: 1,200. As required by the Chanhassen Zoning Ordinance, there will be 2 parking spaces per residential unit. Each unit will have at least one garage parking space. As required by the Zoning Ordinance, the two-family, R-2 units will have two garage spaces per unit. The R-4, apartment units will have at. -least one garage space per unit and some surface parking. e. Amount of dredging: None f. Liquid wastes requiring treatment: 108,150 gal/day The City of Chanhassen's sanitary sewer system will have an increased load of 108,150 gallons per day at full development of the project based on a factor: -of 75 gallons per person per day ("Preparing the EAW," Minnesota Environmental Quality Board, March, 1977): 1,442 persons at full development (3.3 persons/single-family unit, 2.3 persons/2-6 family unit, 1.65 persons/6+ family unit) 1,442 persons x 75 gal/person/day = 108,150 gal/day g. Size of marina and access channel (water area): None h. Vehicular traffic trips generated per day: 4,125 ADT 140 single-family and estate units at 10.0 trips/day = 1,400 trips 168 two-family units at 6.1 trips/day = 1,025 trips 172 townhomes at 6.1 trips/day = 1,050 trips. 120 apartment units at 5.4 trips/day '650 trips Total = 4,125 ADT mm i. Number of employees: None j. Water supply needed: 124,444 gal/day The City of Chanhassen's water distribution system will have an increased load of 124,444.gallons per day at full development.of the project based on a,factor of 86.3 gallons per person per day (75 gallons per person per day + increase for "lost water" - water used for.sprinkling-; etc.). ("Preparing the EAW," Minne- sota Environmental Quality Board, March, 1977). 1,442 persons x 86.3 gallons/person/day = 124,444 gal/day k. Solid waste requiring disposal: 923 tons/year At full development, the project will require the disposal of 923 tons per year of solid waste based on a factor of .64 tons per person per year ("Preparing the EAW," Minnesota Environmental Quality Board,.March,-1977). 1,442 persons x .64 tons/person/year = 923 tons/year 1. Commerci:al, retail or industrial flood space: None III. ASSESSMENT OF POTENTIAL ENVIRONMENTAL IMPACT A. SOILS AND TOPOGRAPHY 1. Will the project be built in an area with slopes currently exceeding 12% No X Yes 2. Are there other geologically unstable areas involved in the project, such as fault.zones, shrink -swell soils, peatlands, or sinkholes? No X Yes 3. If yes on l or 2, describe slope conditions or unstable area and any measures to be used to reduce potential adverse impacts. A small portion of the project site, as shown on Exhibit 6, is characterized by slopes currently exceeding 12%. Some of these steep slope areas will be preserved for park and open space. The.majority of the steep slope areas will be developed as single-family lots of 20,000 square feet or more. However, there will be some slope alteration in accordance with City subdivision standards.. Development throughout the phases-wi'l'l-.' be in accordance with.a soil erosion plan or plans, consistent with Watershed -District and City requirements, to mitigate potential adverse impacts associated with.development on relatively steep slopes. According to the soil survey conducted by the United States Depart- ment of Agriculture, Soil Conservation Service discussed in greater detail in the following paragraphs, the project site includes small areas of peat soils. In order to mitigate potential adverse impacts associated with construction on such restrictive soils, the project proposer has determined that no residential units will be located - in the peat areas. No remova.l -nor alteration of the peat i s- contem plated. Development`on areas of restrictive.Gl.encoe silty clay.loam soils may require excavation and compacting.or replacement with more suitable soils. 4. Indicate suitability of site soils for foundation, individual septic systems, and ditching, if these are included in the project. According to the soil survey conducted by the United States,Department of Agriculture, Soil Conservation Service, three predominant building group soil series have been identified on the Lake Ann Planned Residential Development Site. The characteristics of these soils are described below in terms of engineering properties which deter- mine their development potential (Soil Survey of Carver County, Minnesota, Soils in Community Development).- The number of each building group series is followed by a parenthetical listing of the soils found in that particular soil.series. Soil conditions, with the few exceptions noted below, are generally favorable for the light footing loads required for the proposed residential construction. Mitigative measures will follow standard engineering practice with roadway construction according to City specifications. Septic systems will not be required as sanitary sewer will be made avail- able to the site. a. Building Group Series 4 (Hayden and Lester Loams, 2-6% slopes). Soils in Building Group Series 4 are deep, well -drained loamy soi,a.s characterized by moderate permeability and good soil strength. They do not have a seasonal high water table and are not susceptible to flooding. Series 4 soils are generally suitable for most types of urban development, including resi- dential construction. The majority of the project site falls within Builldi:ng Group Series 4. b. Building Group Series 5 (Hayden and Lester loams, 6-12% slopes). Soils in Building Group Series 5 are deep, well -drained, moder= ately permeable soils with adequate soil strength for construction. The depth of the water table exceeds ten feet. Although erosion is a hazard on the steeper slopes when -soils are exposed and left bare during construction, the project proposer has formulated a soil erosion plan to mitigate potential adverse impacts asso= ciated with earth disturbance activities (See Section IIIA7). Similar soil erosion plans consistent with -Watershed District and City requirements, as applicable will also be formulated for each of the subsequent development phases. c. Building Group Series 10 (Peat.and Muck, Glencoe Silty Clay loam) . Soils in Building Group Series 10 are poorly -drained soils lying in depressions. They are characterized by moderate permeability and fair to poor bearing strength. Since the wetness and poor soil strength are unfavorable development features, peat and muck soils will remain undeveloped and will be preserved for drainage easements and ponding areas. Development on the very small portion of existing Glencoe silty clay areas will occur, if at all, after replacement or compacting of the re- strictive soils. Mitigative measures can be undertaken during construction, ifneeded, to minimize potential adverse impacts of these soil characteristics. 5. Estimate -:the total amount of grading and filling that will be done: Earthwork quantities are unknown at this time What percent of the site will be so altered? Approximately 70 percent of the site will be altered by the earth disturbance activities. The land affected has already been subjected to alteration by conversion of native vegetation to cropland and pasture. The natural amenities have been identified and respected - in site planning and will be protected during construction of all - development phases. To ensure that neither Lake Ann nor its shore- line will be altered, an 80 foot wide strip along the lake's eastern shoreline will be dedicated to the City in connection with subsequent development. No shoreline woodlands will be removed. Separate grading plans for each of the subsequent development phases will be prepared for review and approval by the City.and the Water- shed District, as appropriate. They will be based on the design principles described in the preceding paragraph. 6. What will the maximum finished slopes be? The maximum finished slopes will be 3:1. All slope alterations will conform to City sub- division standards. 7. What steps will be taken to minimize soil erosion during and after construction? As indicated above, preparation of the site for residential con- struction does not entail any alteration of Lake Ann or its shore- line. Grading and other earth:, di-stu.rbaft:ceaeti,vi`.ties 1-11 _be con- ducted so as to minimize adverse impacts on soils and topography. Roads as far as possible will follow natural contours, swales and ridges. Temporary -detention ponds with outlets into drainage channels will be installed and maintained during -construction to remove sedi- ment and assimilate nutrients from runoff,waters on lands undergoing development. Ponds will be sized to meet Watershed District stan- dards and their capacity will.be maintained by dredging, as needed, during construction. Straw bale -sediment dams will also be employed during construction to reduce the velocity of the runoff waters. Exact locations will be determined during the platting and grading permit review processes. - 10 - Implementation of these controls will safeguard Lake Ann'watpr quality. The post -development. rate of off -site storm water runoff will be. -the same a57the rate. -of pre:.-devellop- -runoff-and signi- filcant-efertffize`r use associated with agricultural land use will be eliminated. - After- construction, a permanent storm sewer system utilizing per- manent detention ponds with control outlets will be part of an area -wide long-term erosion control and storm water management system. All disturbed, areas will be re -vegetated as soon as practicable in the development process. B. VEGETATION 1. Approximately what percent of the site is in each of the following vegetative types: Woodland 10% Cropland/Pasture 27% Brush or shrubs 5% Marsh 0% Grass or herbaceous 58% Other (specify) Active cultivation of a significant portion of the site through 1980 has drastically altered native vegetation by clearing of woodland areas for crops and pastures. Some native grassland has also 'been eliminated by this agricultural development. 2. How many acres of forest or woodland will be cleared, if any? 6 - 8 acres Approximately 22 acres of the Lake Ann Planned Residential Develop- ment consist of woodlands. It is estimated that 2.0 acres of such woodlands are located along the Lake Ann shoreline. None of these shoreland woodlands, with the exception of diseased trees, will be removed or subjected to earth disturbance activities. The remaining 20 acres of woodlands are located primarily in the west -central portion of the site. After grading and other earth disturbance activities, approximately 12 to 14 acres of non -shoreline woodlands will remain unchanged. Many of these remaining non -shoreline wood- lands are located in an area southeast of Lake Ann, which the City has planned to purchase for park and open space. The project pro - poser's decision to retain all existing shoreline woods and vegeta- tion and the majority of non -shoreline woodlands, as described in greater detail in Section IIIA7 above, conforms with City natural resource policies which require "adequate on- and off -site pro- tection of existing vegetation. : .. to minimize damage to vegetation or wildlife habitat. Consistent wfth� Watershed -Di strict review criteria natural vegetation.and shoreline.woodlan-ds within:50 feet of°Lake.. °Ann will remain Un'distUrtbed. (Riley: -Purgatory - Creek Watershed District Overa-11 Plan.)' 3. Are there any rare or endangered plan species or areas of. unique botanical or biological significance on the site? (See DNR publication, The Uncommon'Ones.) X No Yes C. FISH AND WILDLIFE 1. Are there any designated federal, state or local wildlife or fish management areas or sanctuaries near or adjacent to the site? X No Yes 2. Are there any known rare or endangered species of fish and wildlife on or near the site? (See DNR publication'The Uncommon Ones.) X No Yes If yes, list the species or area and indicate any measures to be used to reduce potential adverse impact. 3. Will the project alter or eliminate wildlife or fish habitat? No X Yes Lake Ann itself and its associated fish habitat will not be altered by the project. As discussed in Section IIIB2 above, a portion of the existing non -shoreline woodlands will be cleared, thus eliminat- ing existing wildlife habitat for small birds and small animals. 4. If yes on any of questions 1 - 3, list the area, species or habitat and indicate any measures to be used to reduce potential adverse impact on them. Topographical and site planning constraints preclude retention of all wildlife habitat associated with non -shoreline woodlands. Some of the non -shoreline woodlands will remain or be transplanted to other portions of the site and landscaping by individual builders, together with replanting initiated by homeowners, will in the long run support small avian and mammalian populations. However, the most significant feature of the site,.Lake Ann and its shoreline, will be maintained in its natural state. Shoreland development densities and shoreline' preservation- have' biffen'approved-:by.--"the -Minnesota Depart- menhreofe.Na-tural.-Rese Ces. (Letter from K. Lokkesmoe to B. Waibel, dated June 9, 1980.) D. HYDROLOGY 1. Will the project include any of the following: If yes, describe type of work and mitigative measures to reduce adverse impacts. NO YES a. Drainage or alteration of any lake, pond, marsh, lowland or groundwater supply X b. Shore protection works, dams, or dikes X - 12 - No Yes c. Dredging or filling operations X d. Channel modifications or diversions X e. Appropriation of ground and/or surface water X f. Other changes in the course, current or cross- section of water bodies on or near the site X 2. What percent of the area will be converted to new impervious surface? Construction of residential buildings, park areas, walk areas and other associated urban development features will convert approxi- mately 20% of the project site to new impervious surface. 3. What measures will be taken to reduce the volume of surface water runoff and/or treat it to reduce pollutants (sediment, oil, gas, etc.)? Drainage easements will preserve the natural drainage systems. Temporary sedimentation ponds and earth and hay bale diversions will be employed to control sediment and reduce velocity of run- off. After construction, permanent storm water detention ponds will be incorporated into the storm drainage system to'serve as part of a long-term erosion control and storm water management system. 4. Will there be encroachment into the regional (100 year) floodplain by new fill or structures? X No Yes Floodplain elevation is 957.0; site low point outside of the park area is 970.0. If "yes," does it conform to the local floodplain ordinance? No Yes 5. What is the approximate minimum depth to groundwater on the site? Approximately 10-foot minimum depth. (Statistic from the Carver County Soil Report) E. WATER QUALITY 1. Will there be a discharge of process or cooling water, sanitary sewage or other wastewaters to any water body or to groundwater? X No Yes. If "yes," specify the volume, the concentration of pollutants and the water body receiving the effluent. 2. If discharge of wastewater to the municipal treatment system is planned, identify any toxic, corrosive or unusual pollutants in the wastewater. Not applicable. - 13 - F. 3. Will sludges be generated by the proposed project? X No ' Yes If "yes," specify the expected volume, chemical composition and method of disposal. 4. What measures will be used to minimize the volumes or impacts identified in questions 1-3? All discharge will be treated at Metro Waste Control Commission facilities. They will be residential type only and will not contain any exotic materials. 5. If the project is or includes a landfill, attach information on soil profile, depth to water table, and proposed depth of disposal. Not applicable. AIR QUALITY AND NOISE 1. Will the activity cause the emission of any gases and/or particulates into the atmosphere? No X Yes If "yes," specify the type and origin of these emissions, indicate any emission -control devices or measures to be used, and specify the approximate amounts for each emission (at the source) both with and without the emission -control measures or devices. The project will be emitting gases and particulates from the heating and cooling systems of the residential structures which will comply with the Minnesota Energy Conservation Code. No emission control devices are planned. Concentration of automobile emissions may occur at entry and exit points subject to mitigation by proper vehicular circulation. Increased traffic generated by the propos.ed.Planned- Residential Development will result in an increase in the ambient level of carbon mono.)G?de in the project vicinity. The incremental nature of the project will reduce the severity of this potential adverse impact on air quality levels. As discussed in greater detail in IIIJ below, scheduled and planned regional roadway: improvementswill improve vehicular circulation and reduce traffic congestion;'thereby minimizing adverse air quality impacts associated with trips generated by Lake Ann residents. In addition, the project proposer and individual builders can be encouraged to promote and market usage of mass transit, car pooling and other shared ride programs which will reduce the number of trips attri- butable to the proposed development (See discussion of "Minnesota Rideshare" program sponsored by the Minnesota Department of Trans- portation in Section IIIG2 below). - 14 - During construction, there will be a short-term adverse a.ir quality impact from fugitive dust generated by construction activities. If required, watering will be employed.to reduce dust generated by pulverization and soil abrasion. City ordinances and other applica- ble development controls will be followed. 2. Will noise or vibration be generated by construction and/or operation of the project?''' No ' X Yes If yes, describe the noise source(s); specify decibel levels (dB(A)), and duration (hrs/da) for each and any mitigative measures to re- duce the noise/vibration. Heavy equipment will be employed on the site to implement.the grading plans and, to a lesser extent, other construction activities. This equipment will be muffled in accordance with applicable state regula- tions. No further mitigative measures are planned. 3. If yes on 1 or 2, specify whether any areas sensitive to. -noise or reduced air quality - (hospitals, elderly housing, wilderness, wild- life areas, residential developments, etc.) are in the affected area and give distance from source. As described in Section IIB above, neighboring land use does not consist of unusually sensitive receptorsother than Lake Ann Park and residential occupants in the general project area. Local govern- ment requirements, if any, for noise abatement will be met. G. LAND RESOURCE CONSERVATION, ENERGY 1. Is any of the site suitable for agricultural or forestry production or currently in such use? No X Yes If yes, specify the acreage involved, type and volume of marketable crop or wood produced and the quality of the land for such use. Approximately 60 acres of the site have been utilized for cropland and pasture. Corn, hay and small grains have been cultivated. Approximately 15% of the site consists of prime farmlands as de- fined by the United States Department of Agriculture. These prime farmlands are located in the central portion of the site. Prime farmlands are those that have the best combination of physical and chemical characterisitics for producing food, feed, forage, fiber and oilseed crops. (7 CFR Section 657.5(a) Identification of Important Farmlands.) Although the loss of this farmland is an adverse impact, the .selection of the project site was based in part on the suitability of its soils and topography, for residential development. 'The site is within one-half mile of`downtown Chanhassen. It is adjacent- to existing single-far,ily developr�ent-to the north known as -Greenwood Shores: The site is near tb"existing.developed land, the Chanhassen Lakes Business Park. It is or will be served by essential services, thereby satisfying a regional planning goal of - 15 - channeling incremental growth into areas already served by public facilities. From a local perspective, it is inevitable that some prime and productive farmlands will be converted to urban land uses to serve the needs of the'City's.growing.population. Finally, the adoption by the Minnesota Legislature 'of the 1980 Agricultural Preserved Act provides new tax and related incentives aimed at the preservation of agricultural farmlands in the metropolitan area. 2. Are there any known mineral or peat deposits on the site? X No Yes If yes, specify the type of deposit and the acreage. Some peat soils are located on the site but such restrictive soils do not constitute deposits suitable for mineral extraction activities. As described in Section IIIA3 above, all on -site peat soils will remain undisturbed by grading and other construction activities. 3. Will the project result in an increased energy demand? No X Yes Complete the following as applicable: a. Energy requirements (oil, electricity, gas, coal, solar, etc.) Estimated Annual Peak Demand (Hourly or Anticipated Firm Contract or Type Requirement Daily) SummerWinter Supplier Interruptible Basis? Natural Gas 67,200 mcf* Not Applicable Minnegasco Firm Electricity 2.3 x 106 KWH* Not Applicable NSP Firm *Federal Energy Administration Interagency Task Force, Project Independence, "Residential Demand - North Central Region," 1970. b. Estimate the capcity of all proposed on -site fuel storage. There are no proposed on -site fuel storage facilities. c. Estimate annual energy distribution for: space heating 70% appliances and lighting, etc. 8:-'• clothes drying 4% processing Not Applicable water heating 14% cooling 4% (Source: Energy Conservation Throu h Land=Use Plahhin , Metro- politan Counci-1, August-1979 figures from Minnesota Energy Agency)). d. Specify any major energy conservation systems and/or equipment incorporated into this project. The Lake Ann Planned Residential Development, as noted above, will result in an increased energy demand. However, the pro- posed development indirectly reduces energy consumption by avoiding costly energy output for extension of services to areas not served by essential services. In addition, studies have shown that the planned development concept and mixture of housing types can reduce energy consumption (The Costs of Sprawl/Executive Summary cited in Energy Conservation Throu h Land -Use Planning, Metropolitan Council, August, 1979. Department of Energy studies have also shown that multiple - dwelling units and townhomes are more effidl6nt energy consumers than the single-family detached dwelling unit. Increased residential energy consumption will be mitigated by compliance.with Minnesota's 1976 Energy Conservation Code which applies to all types of new buildings. The Energy Conservation Code is based on a national standard known as ASHRAE 90-75 and is designed to reduce energy waste by establishing strict require- ments for.building on slopes, selection of heating,• ventilation and air conditioning equipment, water heating and electrical distribution systems. Issuance of a buildingpermit is con- tingent on compliance with these standards, which have been shown to reduce total household energy consumption in the North Central region of the United States by approximately 15%. (Arthur D. Little, Inc., "Energy Conservation in New Building Design; An Impact Assessment of ASHRAE 90-75," cited in Energy Policy and Conservation -Report, 1978.) Although the proposed development will result in increased transportation energy consumption due to increased trip genera- tion, this adverse impact may be lessened somewhat by the proximity of the site to a developing employment -center, the Chanhassen Lakes Business Park and by active promotion of the "Minnesota Rideshare" program described in greater detail in Section IIII3 below.) e. What secondary energy use effects may result from this project (e.g. more or longer car trips, induced housing or business, etc.)? Although the proposed development will result in generation of increased automobile trips, it fulfills a regional goal of pro- moting development in areas served by essential services and public facilities. The project area is generally served by mass transit and.increased ridership on available routes will conserve energy. (See also Section IIII2 below.) H. OPEN SPACE/RECREATION 1. Are there any designated federal, state, county or local recreation or open space areas near the site (including wild and scenic rivers, trails, lake accesses)? No X Yes - 17 - If yes, list areas by.name and explain how each may be affected by the project. Indicate any measures to be used to reduce adverse impacts. According to the' recreation open space chapter of the Metropolitan Development Goide;-originally adopted by the Council in 1974, Chan- hassen is within the'Sector 8 regional recreation area, a sector that is currently .deficient in regional recreation open space. Sector 8 needs are planned to be met.by the acquisition and/or development of significant regional open space facilities in this sector and adjoining sectors As required by the Metropolitan Parks Act of 1974, the Metropolitan Council has prepared a new Recreation Open Space Development Guide - PollCY. Plan (the Policy Plan) which updates and replaces .the recreation open space chapter of the Metropolitan Development Guide. The Policy Plan sets forth detailed.policies and recommendations - concerning development, operation and maintenance of regional parks and park reserves, two special use sites and a network of trails. The Policy Plan identifies Lake Minnewashta Regional Park as an existing regional park facility which is Tocated approximately five miles northwest of the project site. Approximately 350 acres of the proposed 390 acre facility have been acquired or funded and will be developed for camping, picnicking, swimming and boating in the 1980-1985 five-year capital improvement planning period. Riley Lake Regional Park is a proposed regional -park facility located approximately 3-5 miles southeast of the project site in Eden Prairie.. Acquisition of approximately 240 acres is scheduled for 1984, with development for biking and hiking trails, picnicking and swimming planned for 1985-1990. Carver Park Reserve is an existing regional park reserve located approximately 10 miles west of the project site; 2,380 acres of the proposed 3,440 acre facility have been acquired or funded and are developed for a variety of recrea- tional uses. Acquisition of the remaining 160 acres is expected to be completed by 1984 with full development in the 1986-1990 planning period. The Policy Plan also shows a regional trail corridor con- nection between Lake Minnewashta Regional Park and Riley Lake Regional Park. Exact trail alignments, boundaries and uses will be determined through subsequent master planning. Lake Ann Park forms the western border of the site. It is 62 acres of passive and active recreation space. An expansion of Lake Ann Park is planned by dedication of 22.8 acres by the sponsor and the purchase of 11.6 acres by the City of Chanhassen. - 18 - I. TRANSPORATION 1. Will the project affect any existing or proposed transportation systems (highway, railroad;.water,' airport, etc.)? No X Yes If yes, specify which part(s) of the system(s) will be affected. For these, specify existing use and capacities, average traffic speed and percentage of trunk traffic (if highway); and indicate how they will be affected by the project (e.g., congestion, percentage of truck traffic, safety, increased traffic (ADT), access requirements). The primary impact of the project will occur on Trunk Highway (T.H.) 5, and County Road (CR) 17. Direct access to the project will be provided from T.H: 5 and CR 17. The impact on these roadways is summarized in the following paragraphs. Existing ADT figures were taken from the Minnesota Department,of Trans- portation's 1978 ADT maps; estimated maximum capacity figures were obtained from consultations with Patrick Murphy, Carver County Traffic Engineer. T.H. 5 west of CSAH 17 is a two-lane undivided road classified by Carver County as a minor arterial. Existing ADT on this road- way segment is.12,000. Maximum capacity is estimated to be approximately 12,000 ADT. T.H. 5 east of CSAH 17 is also a two- lane -:undivided minor arterial. Its existing ADT, 11,800 ap- proximates its 12,000 ADT estimated maximum capacity. According to the Carver County Traffic. Engineer, traffic on T.H. 5 in the project vicinity is becoming congested during peak hours-. According to the scoping report on the proposed T.H. 212/169 realignment discussed in greater detail below, T.H. 5 ADT will soon exceed capacity levels even if new lanes are added. CR 17 north of T.H. 5 is a two-lane undivided minor arterial. Existing ADT on this roadway segment is 3,150. Maximum capacity is estimated to be approximately 12,000 ADT. CSAH 17 south of T.H. 5, which is presently under construction, is divided into segments. The northerly segment, from Creek Drive to T.H. 5, is being constructed as a four -lane road with an estimated maximum capacity of approximately 20,000 ADT. The southerly segment from Creek Drive to CSAH 18 (Lyman Boulevard) is being constructed initially as a two-lane undivided road with an estimated maximum capacity of approximately 12,000 ADT. Right-of-way has been acquired for the construction of two additional lanes. According to the Carver County Traffic Engineer, commencement of the four -lane upgrading of this southerly segment of CSAH 17 will be dependent on development pressures and the timetable for the proposed T.H. 212/169 re- alignment. - 19 - The Golden Valley District Office and the Office of Environ- mental Affairs of the Minnesota Department of Transportation recently completed a scoping report on the realignment of T.H. 212/169 in Carver, Hennepin. and Scott Counties. '(Scoping Report - T..H..212/169; C6rver;'H6hne0ih'ah d Scott"Coun ties, MN/DOT, Golden Valley District Office and MN/DOT Office of Environmental Affairs, February, 1980.)- The proposed T.H. 212 portion of the project would replace a two-lane facility which has many accidents due to its numerous entrances, at - grade intersections and sight distance problems, with a new principal arterial with strictly controlled access. It would serve present and future transportation needs in the project area :that are not or cannot be adequately served by existing trunk highways and county roads. Five design alternatives for T.H. 212 will be more thoroughly analyzed in the Draft En- vironmental Impact statement on the project. Construction of T.H. 212 will have a considerable ameliorative effect on traffic flow on T.H. 5 both east and west of CSAH 17. If fully implemented, projected year 2000 traffic volumes on T.H. 5 would be less than existing traffic volumes. According to the Carver County Traffic Engineer, the addition of even two lanes of the proposed T.H. 212 realignment would markedly benefit T.H. 5 as well as regional roadway traffic movements. According -,,to the scoping report, the T.H. 212/169 Draft Environ- mental Impact Statement will be circulated in 1981 with approval of the Final Environmental Impact Statement projected for 1983. Construction is expected to begin in the late 1980's. The primary adverse impact of the Lake -Ann Planned. Residential Development will be on T.H. 5 which is already approaching design capacity. At full development, the project proposer's traffic consultant estimates that the project will generate approximately 4125 vehicle trips per day; full development is not expected -to be completed until 1985-1987. Significantly, only 1206 ADT at -full development will be added to the segment of T.H. 5 east of CSAH 17 with 301 vehicles per day added west of CSAH 17. The incremental nature of the planned development will reduce the severity of the adverse impact on T.H. 5 traffic flows. Traffic congestion will be most acute during peak hour periods; peak hour traffic is generally assumed to be 10% of ADT. Thus, at full development, the planned development will add approximately 120 vehicles East of CSAH 17 and 30 vehicles. West of CSAH 17 during peak hour flow. Construction of the proposed T.H. 212/ 169 realignment will significantly improve traffic flow on T.H. 5 by re-routing many regional and local daily trips. According to consultations with the Carver County Traffic Engineer and the project proposer's traffic consultant, CSAH 17 and CR 17 have adequate capacity to handle the increased trips generated by the project throughout the phased construction and at full development. -20- 2. Is mass transit available to the site? No X Yes The Metropolitan Transportation Commission, in accordance with regional transportation policy regarding connection.of--outlying -areas with central.business districts; provides express bus service to the Minneapolis central business district, eight trips daily, Monday through Friday. The nearest stop to the project is on Trunk Highway 5 adjacent to the proposed development. No mass transit is currently available to the'St. Paul central business district. Expansion of existing transit service is not planned and would be contingent on the relationship of growth pressures generated by the project and neighboring urban development to budgetary constraints. 3. What measures, including transit and paratransit services, are planned to reduce adverse impacts? Current transit service generally has sufficient capacity to serve the project at full development. Savings in energy consumption can be real-ized by increased use of metropolitan transit facilities. The Minnesota Department of Transportation is in the.p•rocess of de- veloping "Minnesota Rideshare," a program aimed at conducting a statewide media campaign to promote the concept of shared riding. The program will be managed by staff assigned to the MN/DOT Office of Transit Administration. Materials and technical assistance for the implementation of ridematching services, carpooling, vanpooling and buspooling by private, nonprofit or public agencies will. be disseminated from the seven MN/DOT district offices. Within the metropolitan area, "Minnesota Rideshare" will be coordinated with the Metropolitan Transit Commission's total commuter service project. Staff hiring and training, resource package development and media information -dissemination for the program is already underway. The project proposer will actively promote "Minnesota Rideshare" at the home -based end of the work/shop trip in order to reduce all types of vehicular trips generated by the proposed Planned Resi- dential Development and to encourage more efficient use of trans- portation energy resources. J. PLANNING, LAND USE, COMMUNITY SERVICES 1. Is the project consistent with local and/or regional comprehensive plans? No X Yes If not, explain: The project is consistent with regional comprehensive plans. It is also consistent with-the'Chanhassen Draft Comprehensive -Plan prepared under the directives of the Metropolitan Land Planning Act of 1976. If a zoning change or special. use permit is necessary, indicate existing zoning and change requested. - 21 - The project requires a rezoning from R-1A Agricultural Residential District to P-1 Planned Residential District. The City. Council recently approved the planned development rezoning. The Planned Residential Development District allows mixing of housing types and greater flexibility in site -design. 2. Will the type or height of the' project conflict with the character of the existing neighborhood? ... X No Yes If yes, explain and describe any measures to be used to reduce conflicts. 3. How many employees will move into the area to be near the project? Not Applicable. How much new housing will be needed? Not Applicable. 4. Will the project induce development.nearby-- either support services or similar developments? If yes, explain type of development and specify any other counties and municipalities affected. The existing support services are deemed adequate in capacity to serve additional population proposed for the project and, as a result, the project itself is not expected to induce substantial growth in support services. Local comprehensive plan designation of neighboring lands within the metropolitan Urban Service Area for urban development, coupled with the availability of essential services, is likely to induce similar residential development. 5. Is there sufficient capacity in the following public services to handle the project and any associated growth? r . Amount. Required Public Service for Project Sufficient Capacity? Water 124,144 gal/day Yes, 8" laterals will be connected to the (See IIC2j) existing 18" trunk water main along Highway 5 at the southern border of the project. The laterals will be constructed according to City requirements. A new well located 1/3 mile south of the project site is expected to pro- duce approximately one million gallons of water per day. Wastewater 108,150 gal/day Yes, the Blue Lake Metropolitan Wastewater treatment (See IIC2f) Treatment Plan is located in the City of Shakopee just north of Highway 101. It dis- charges.to the Minnesota River. The Blue Lake Plant is an activated sludge plant which pro- -22- Schools vides primary and secondary treatment for sewage flow for Chanhassen and other com. munities in sewer service area 4 on the west side of the metropolitan area. The design capacity of this facility is 20 MGD. Current flow to the _plant from its service area is approximately 13 MGD. The plant has adequate capacity to serve Lake Ann at full develop- ment. Although design capacity is expected to be reached in 1997, an expansion in that time period is planned to increase the facility's design capacity to 30 MGD. The Lake Susan trunk and Lake Ann Phase I interceptor sewer, a gravity sewer.which pro- vides metropolitan interceptor sewer service for that part of Chanhassen lying within the Riley - Purgatory Creek Watershed District area, is available to serve the project site. It runs from T.H. 5 through the Chanhassen Lakes Business Park to the north shore of Lake Susan. A small portion to the north will use a lift station in an adjacent subdivision, Greenwood Shore. As shown on Exhibit 9, Preliminary Utility Plan, these facilities will be extended to most of the project site. Design criteria and flow rates are consistent with the City's 1971 Comprehensive Sewer Plan. The Lake Susan trunk and Lake Ann Phase 1 interceptor flow is transported to the Blue Lake Metropolitan Waste -water Treatment Plant by way of the Purgatory Creek Interceptor in Eden Prairie. Lateral, sewers will be con- structed in accordance with City requirements. 347 pupils: The proposed development is located within 140 single-family Independent School District #112 which serves x 1.05 pupils/unit = Chanhassen and Chaska. ISD #112 has 5 schools 147 pupils 3 elementary schools, 1 middle school and 1 high school, with a total capacity of 4,126. 168 two-family units Total enrollment as of June 2, 1980 was 3,218 x .5 pupils/unit = pupils. Chanhassen Elementary School, approxi- 84 pupils mately 1/3 mile east of the project site, is the existing elementary school which will 172-townhomes serve the proposed development. The existing x .5 pupils/unit = middle and senior high schools are located on 86 pupils Highway 41 in Chaska. Pupils will be bused from the site to all three schools. 120 apartments x .25 pupils/unit 30 pupils (Source: Independent School District 112) Enrollment in Ind. School District 112 has been stabilizing over the past few years. At full development in 1985-1987, the Lake Ann Planned Residential Development is expected.to generate a pupil population of 347. Overall school W -23- district capacity may be adversely impacted by.the:.cumulative effects of this. development and other residential developments within school district boundaries. The severity of this.impact is mitigated significantly by the'fact that this phased project will introduce new pupils into -the school system in relatively small increments. In addition, Ind. School District 112 As discussing with the'City of Chaska and Carver County rental of space in downtown Chaska for short-term elementary school use. Talks have also been initiated with Minnetonka Independent School District 276.regarding the utilization of space in the Excelsior Elementary School and West Junior High School, which is located at the junction of Highways 41 and 5 in Carver County. (Consultation with Roger Amundson, Independent School District 112.) Solid Waste 923.tons/year Yes, Eden Prairie Sanitary Landfill has suf- Disposal (See IIC2k) ficient capacity to serve the proposed develop- ment. Streets 3.4 Miles Yes. Other (Police, The Carver County Sheriff's Department pro - Fire, Etc.) vides police protection services for the City of Chanhassen. The department has 35 full- time sworn, licensed officers and 12 part- time sworn, licensed officers. Five officers are currently assigned to the Chanhassen area and at least one officer is on patrol there on a 24-hour basis. (Consultation with Captain Newman, Carver County Sheriff's Department.) The incremental nature of the proposed development will reduce the impact on existing police -protection services. However, depending on demand and budgetary constraints, future expansion of such services may be re- quired. Fire protection in the City is pro- vided by a 30-member volunteer fire department supplemented by mutual aid contracts with neighboring communities in Carver County. The existing fire station is located at City Hall on Laredo Drive about mile from the project site. Although a bond issue was recently ap- provedfor the construction of a new City Hall and fire station in the northwest corner of the City, the existing fire station in the immediate project vicinity will remain operational. (Consultation with Jack Kreger, Fire Chief.) -24- Storm Sewer The City.of Chanhassen has not adopted a com- prehensive. -storm drain age .plan.- Development on the'.project site must conform to Riley - Purgatory Creek Watershed District policies regarding storm drainage systems. As shown on Exhibit 8, the project. proposer has for- mulated a preliminary overall drainage plan consistent with Watershed District review criteria. A soil erosion plan utilizing temporary detention pponding and straw bale sediment dams will .also -be formulated. If current major public facilities are not adequate,.do existing local plans call for expansion, or is expansion -necessary strictly for this one project and its associated impacts? See above table. 6. Is the project within a proposed or designated Critical Area or part of a Related Actions EIS or other environmentally sensitive plan or program reviewed by the EQB? ..'X No ''' -Yes If yes, specify which area or plan. 7. Will the project involve the use; transportation, storage, release or disposal of potentially hazardous or toxic liquids,solids or gaseous substances such.as pesticides, radioactive wastes, poisons, etc? X No Yes If yes, please specify the substance and rate of usage and any measures to be taken' to minimize adverse environmental impacts from accidents. 8. When the project has served its useful life, will retirement of the facility require special measures or plans? No Yes Not Applicable. If yes, specify. K. HISTORIC RESOURCES 1. Are there any structures on the site older than 50 years or on federal or state historical registers? X No Yes 2. Have any arrowheads, pottery or other evidence of prehistoric or early settlement been found on the site? ... X-No Yes Might any know archaelogical-or paleontological sites be affected by the activity? 'X No Yes -25- 3. List any site or structure identified in 1 and 2 and explain any impact on them. J. OTHER ENVIRONMENTAL CONCERNS Describe any other major.'environmental effects which may not have been identified in the previous section. -None. IV. OTHER MITIGATIVE MEASURES Briefly describe mitigative measures proposed to reduce or eliminate potential adverse impacts that have not been described before. The preparation of this EAW was necessitated in .part by the location of a portion of the proposed development within the Lake Ann shoreland, as defined by the Minnesota Shoreland Management Act,`Minn. Stat. 105.485. As noted above, the development wil-I not have an overall adverse impact on Lake Ann or its shoreline; development -densities have been approved by DNR.a Pr soil erosion plan .is being formulated for Lake Ann P.R:-D. based on City and Water- shed District requirements. .Similar storm drainage -and soil erosion plans will be implemented for subsequent phases -!of the development to ensure that post -construction runoff rates will be less than existing runoff rates for undeveloped land and to mitigate potential adverse impacts of sedimentation and urban runoff. V. FINDINGS The project is a private ( } governmental (X ) action (as defined in MEQB regulations). The Responsible Agency (Person after consideration of the information in this EAW, and the factors in 6 MCAR 3.025 makes the following findings. 1. The project is ( ) is not ( X ) a major action. State reasons: The development is entirely within the corporate limits of Chanhassen. The development is consistent with -goals and policies established in the Chanhassen Comprehensive Plan and'the Chanhassen Interim.Comprehensive Plan. It will" conform with pertinent local ordinances and regulations. The development will be served by City water, storm sewer and sanitary sewer facilities. The development will not overburden or otherwise negatively impact the delivery or capacity of municipal services or facilities. 3. The project does*(*. ) does not (X ) have the potential for significant environmental effects. State reasons: -26- The development will no.t'significantly alter important site characteristics. The development will not adversely impact Lake Ann - or - its shoreline. The development will create a quality residential environment with a variety of housing types and ample open. space and recreational oppor- tunities for prospective homeowners desiring housing in a moderate price range. No county, regional or state facilities -will be adversely impacted. No county,' regional or state mutual resources will be adversely impacted. 3. (For private actions only.) The project is'(* } is not;:►(_, ) of more than local significance. State reasons: VI. CONCLUSIONS AND CERTIFICATION NOTE: A Negative Declaration or EIS Preparation Notice is not officially filed until.the date of publication of.the'notice in. the EQB"Monitor section of the Minnesota State Register. Submittal. -of the EAW to the EQB constitutes a request for publication of notice in the"EQB Monitor. A. I, the undersigned, am either the authorized representative of the Responsible Agency or the Responsible Person identified below. Based on the above findings, the Responsible Agency (Person) makes the following conclusions. (Complete either 1 or 2). 1. X NEGATIVE DE-CLARATION'NOTICE No EIS is needed on this project, because the project is not a major action and/or does not.have the potential for significant environmental effects and/or, for private actions only, the project is not of more than local significance. 2. EIS PREPARATION NOTICE An EIS will be prepared on this project because the project is a major action and has the potential for significant environmental -effects. For private actions, the project is also of more than local significance. a. The MEQB rules provide that physical construction or operation of the project must stop when an EIS is required. In special circum- stances, the MEQB can'specifically authorize limited construction to begin or continue. If you feel there are special circumstances in this project, specify the extent of progress recommended and the reasons. b. Date Draft EIS will be submitted: month ,day year) -27- (MEQB rules require that the Draft EIS be submitted within 120 days of -publication of the EIS'Preparation Notice in the EQB Monitor. If special circumstances -prevent compliance with this time limit, a written request.for extension explaining the reasons for the re- quest_must be submitted to the EQB Chairman.) c. The Draft EIS'will be prepared by (list Responsible Agency's) or Person(s)):' - ... -- Signature Title Date B. Attach' certi:fying :the date nth-aticopies of ; this. EAW Mere - mailed to all points on 'the official EQB distribution list, .to the city and county directly impacted, and.to adjacent counties or municipalities likely to be directly;impacted by the proposed action (refer,,to question III.J.4'on page�21of the EAW.). The affidavit.need to be attached only to the copy of the EAW which is sent to the EQB. C. Billing procedures for EQB Monitor Publication State Agency Attach to the EAW sent to the EQB a completed OSR 100 ONLY: form (State Register General- Order Form - available at. Central Stores).. For instructions, please contact your Agency's Liaison Officer to the State Register or the Office of the State Register - (512) 296-8239. r__-- T-- --_-- 1 ST FRANCIS 1' Bcrwcl_ vlsta� _ ---- I Ilr, Wrn tl' 1 FAST NI IMII I n4'a2z, ANOKA CO. M, HOW MAM LAKE �P\I J 1_ Ttv r�Y'" •° i 1 IISNUYI N I I, xl l NI IIII• I I IINI UNAM I ,UI AI.INU I - HENNFPIN 'I 11 HNIIIU I I INUI rI NIII NCI '•� MI IHNA r �;MArll r1 Aln LAKEC-, ORONO AY Al LV"_/ ALINIOMry rJ r. I. •... I YT•'.:I .. I I MOUND." �r 7 DL 4 1 I I I C.21 SINI 'BOr ACIUS /•�� MI'M INMAXI I ' I 1� I1F�I�(�/ m.n I ••+,.r .AM, �I I I ..I ... UNIA ' I' (II�tiK I CAHVkH I. I 1 I 1 I I1.\•.BAIT FOREST LAKC �6 I Nf W'•I nNI+IA IIIHI:,I IAKI i I' I. AANUKAI) LINO LAKES DAYTON [NAMPI IN COON RAPIDS EFRVILLE Al xAINI 6 %l�CEN 1 NII4O It-�1 XIK .;ixj 11 Ilclxnl I rlxl •. WASHINGTON I' rIti'•IIIIMIVIIWi AYII I. NIIYI • r 1 I I 17 VIIIWI . 1-11IKI IN IANhII yIJ1•J2 itAMiI SII I kINII YI 1 I I •1 MI .'. I � I S • , L:•nl L.O N'U/NI TN Nlw '1 MIIN 1111":IN; 14 2A I INNH•11 NM 1. 14 rRv 41A1 yJ I IIII IANIII N 2h 1 1129 I IA lI IIIIII %I I VIYMDII111 IIIIIr1II ` 1':'�l I-1'. ^u� I ! 0'RS•N I TIN' I I I Nn OSI VIIIE SI.'PA It • "1 I I 1 1 J- �n I:OLUI.N 1�17 I '1b 14AFLEW000 - 'U'OXICDALE EL MO B veurr J I j T 5 i RAMSEY CO. MINNETONNA ST. LOUIS �! SAINT PAUL i ,fit TANK phMINNEAPOLIS PHAVEN �O}P�K II N5; ., i IDINA SIT - NIL111Illlli��IXI'UN '1'JII :DEN PRAIRIE IUUNG 1 AMLRICA ._I NUNWUUUI _ F i I I ,II t'111.U1.M1 I IIII EAMVIV R.,IIN '�'III:.I:IN II; I SNAkOP[E _rl_l`rI_ 1 .,..'�..a+•1InY:. I Iggl•'N I PRIOR I I � 1••I. i'.\IIII LANE ,uh LN.MBURG 1 wAlflyI NI •.1 I ••Rf 1 nN:' LABEL ST. CROIK BEA ' Y 1 19 WEST - WOODBUR.. SOUIM A ST. AETON PAUI. �18 MI NUUTA T NFWIURf IIII .1114 UN�ISH IA U1.p"'j� �•S 1 SKI al}1 rA HI NI IIIIMINI.IUN IMVIM I n1.AM III II.1114 � CI�IIA/.1 I. x11V!' � I.111'•'I:e , 711 /•7j%.LlZ .,.1 KOTA CO. BU RMSYILLE I I SAVAGE Y i 1CT' J C.- _IE VAI LII AUSl MOUME � II 111N'.11: ( " 1 I HAS,,N1.1 - �jEUAT� I � I I I r: N I I I I �' t'1 R'h111 I I('fJ i 'II: "JI I1Nnl 1 L- -_ _ I l ANC` I ItI f K I S1•NINI: I AKI I 1 HI IIII AI I'INI I I -I I M•1H •,I:' i RWI N I L. LAKEVILLE I VERMILLION 1141- T I SCOTT CO. I FARMINGTON I IORDAX T I IMI111 rLAINI I I NI :. M:•HRI I , I I I AMYII.M I I I I I I IN T I N• y l U:I MI I4YII I I III Irl 11+ MI W MAVKI I I I I I I � I tlll•'ll I I I XIYi �YA4U1I I I II KO� I I i I -----T - - --1--- j }--1--—1----- I I 1 Oct.744 . r;.nl••" rn MILES 5 10 15 20 25 I I NANum rN� I;"I NmAll IWpll I:I I•I:1• I I 61 -IA I TWIN CITIES .METROPOLITAN AREA Political Boundaries,1914 I SPRING PARK 9 VICTORIA 17 FALCON HEIGHTS 25 GEM LAKE ANOKA _ County 2 ORONO 10 ROBBIN$DALE 18 MENDOTA 26 DIRCHW60D 3 MI N HETONKA BEACH II SPRING LAKE ►ARK 19 LILYDALE 27 WHITF HEAR 4 TONKA BAY 12 U. S. GOVT - 20 11REY CL:IIIll 2H BAY►ORT Township 5 EACELSIDR 13 HILLTOP 21 LANDFALL 29 WILLF.RNIE 6 GREENWOOD IA COLUMBIA HEIGHTS 22 DELLW000 30 OAK PARK HEIGHTS UNSID___-_ Municipality 7 WOODLAND. 15 ST. ANTHONY 23 PINE SPRINGS 31 LAKELAND SNORES' - 8 MEDICINE LAKE W LAUDERDALE 24 MAHTOMEDI 32 51. MARY'S POINT Regional Location Exhibit * 1 Ann a O OOil J, ,o 0, 1v!\ Vi ° VO 900 1 � !^ \ ..i -i 'I � � `� \'� � ' � � 1` J�� ✓\.ram\� b�� ° � �_"i-_1 f /- +�'. Ytr- �.�'� � ' pk / ��' �'�'.�\\�. �✓ �� ,,� / _=/ r r 1 . '�'/ "l f 1 � "�t2 � y +c� u� . 1�� 10 - --a1w -.�. -."" yam..-�... 8j6h.�"Y�-d�"` `\ \: j s0 1�� S ' 1 '`\ � ; � �'3 ��. ��1/'( .. � _ ICJ �1 _ g00 i_ ',.` l/ _i G.k . � rr •./ ��,� �' � ��\ � � 1 //��M�n -/�� fir; � J ��5�( �i T�_-_ % �� ,'-�_� —,©� •'�\ \ —il , �/rJ/� — \�1`j�ti '� '�1f,�\� �.. .� \ ' '�` \ � �: � � � k � % f .1 � '�.,. � . �� —� \ � i ` � �,—= r y„ a `•`�'�i � _" J �J / n � � '� '`\\•� 1 �\ .ter_ <• _ - o /• � �- -- � ;� a e - Rile y' /„ 0��•-` \`Z� t�.i- S �' i -j��90 I r � n �¢-..v'as�,T �:.r �S �.2gi /.-'? �% � � 1 _n r ! n 9�_ �.� /i 1\� I ✓ j i i-• \ /ram � i - :1 ' � \ o `w�, �V i- 1 �,, / '� ,! ) D I JO SO ,-, �(l \ / - ✓ i/�•J� �1~ r •1 i �� _ ..�\ \ ( 1'- _ � �r'• i /U., Fz .900 exhibit 2 r 0 4 2 1 mile SCALE Shakopee Quadrangle CONTROL STRUCTURE The control structure will be used to restrict the rate of runoff and reduce the amount of sediment entering the lake. The small opening in the face of the control structure will provide the only outlet for the pond, up to a 100-year storm. The grate on top of the structure will provide additional outlet capacity for a storm in excess of a 100-year frequency storm or for protection should the small opening get clogged. This restricted outlet will cause retention and sedimen- tation to occur in the pond area. LAKE OUTLETS The outlet structures at the lake will be used to dissipate energy and reduce flow velocities to.prevent erosion of the lake shoreline. This will be accomplished by one of the following methods. First, the high velocity flows will be.directed into a manhole where the flow will fall down and into a larger pipe at a relatively flat grade. This manhole will dissipate energy in the flow and the large pipe will reduce the velocity. Second, a concrete block structure will be constructed at the end of the -high velocity pipe. The flow will hit the concrete block which will dissipate the energy and reduce velocity. Both methods will also utilize rip -rap at the outlets to help control erosion. Storm Sewer Details and Descriptions exhibit 11 9" X 3*-10" ALUMINUM LKWAY GRATING $ "" ALUMINUM ANCHr BOLTS CAST IN CONC. W/ I n OF THREAD EXPOSED & NUTS TO SECURE GRATING. POURED CONIC. BASE 12"X I/9"X 6*-O" ALUMINUM PLATE, SHAPED TO FIT FLUSH AGINST MJi d TIMBERS AS SHOWN. ECURE ALUMINUM PLATE TO M.H 1/ GUN DRIVEN CONC. NAILS I"• DIA. LAG BOLTS TO SECURE TIMB&RS ATED NORWAY PINE OR APPOVED EQUAL, 4.X 4" X 3_63 TIMBER (W/ BEVELED ENDS 6 LENGTH FIELD CUT TO FIT.) PLAN VIEW CONTROL STRUCTURE NO SCALE 1 t, • • a 1 1� t� 1 It •1 , tl• 1 11• •t1 1 •It � 1 1 � ; ti •1 t, 1.1 1 to ILA • N , it N 1 11 •7 OIL_ • of � V M 1•�.J1 •1 ♦ 111 9" MIN. POURED CONC. BASE FRONT VIEW FACES TO BE TRUE a` TO PREVENT OPENINGS :• 'J PRECAST 48" DIA. STQ MH W/SHOP SAWED OPENING AS SHOWN. A,� r 7-1 i A •A OPENING —� �•� I t �t t.M4rrI " �• ,J �A _« :a � t �.:� • � �'.' a tt : �. i � ~ � ' � � f SECTION A -A " T 7 16 IdW 2�f s k Zt VI ' LAKE.- OUTLET ENERGY DISSI PATOR ' NG SCALE -3 s -9 go -9 -1 -31-9-9 -3 loll IS-119193 NOWEE9 r Speed Letter, 44-902 From -n-rl -- _ Subject Ibc-D 21�.�;d • 'a �,�5?{��b� 71ir��--�� rP'�'� ' --- =. -N0.9610 FOLD MESSAGE Date g�G Signed �IJAAIUACCFM REPLY rjEC MV ED f'nti.4M,fN'Ty EVELOPMENT DEPT - to. 9 FOLD -No. 10 FOLD Wilson Jones Company GRAVLWE FO ""9W }PART G 1916 • MNTED 1N U." Date Signed RECIPIENT -RETAIN WHITE COPY, RETURN PINK COPY Z 17 AWL." POWERS t3LVD. iftt* Meeting Decembe 1, 1981 --2- Councilwoman Swenson moved to note the November 18, 1981, Planning A minutes. Motion seconded by Councilman Horn. The following voted in Mayor Hamilton, Councilwoman Swenson, Councilmen Neveaux, Geving, and Horn. ,gative votes,. Motion carried. .he City Attorney called attention to page 4, fourth paragraph under "Northwest Lotus Lake Transportation Concept" that it is not the function of the city attorney's office to decide on the placement -of a road in the City. 1981 AUDIT CONTRACT': Council members have previously interviewed four firms. Councilman Horn moved to accept the bid of DeLaHunt Voto & Company, Ltd. in an amount not to exceed $16,700. Motion seconded by Councilwoman Swenson. The following voted in favor: Mayor Neveaux,.Councilwoman Swenson and Councilman Horn. Councilmen Neveaux and Geving voted no.. Motion carried. A 1982 budget amendment will be included in the January 4, 1982, council agenda. y�( LAKE ANN PARK EXPANSION, PURCHASE AGREEMENT AND ACCEPT LAND DONATION: Councilwoman Swenson moved to authorize the Mayor and City Manager to enter into a land purchase agreement for the purchase of Tract D, RLS #88, for a value not to exceed $150,000 and accept the gift of Tract C, RLS #88, as recommended. Motion seconded by Councilman Neveaux. The following voted in favor: Mayor Hamilton, Councilwoman Swenson, Councilmen Neveaux, Geving, and Horn. No negative votes. Motion carried. RESOLUTION 12-25-81: Councilwoman Swenson moved the adoption of the following resolution: WHEREAS Christmas will be upon us in three more days, and WHEREAS all members of the City Council believe in Santa Claus, and WHEREAS all City Council members are fun loving participants in the Holiday Season, THEREFORE, BE IF RESOLVED that the City Council of the City of Chanhassen wish all Chanhassen residents a Happy Holiday Season. Resolution seconded by Councilman 'Geving. The following voted in favor: Mayor Hamilton, Councilwoman Swenson, Councilmen Geving, Horn, and Neveaux. No negative votes. Motion carried. BILLS: Councilman Geving moved to approve the bills as presented: checks #13163 through #13249 in the amount of $1,133,631.98 and checks #17260 through #17366 in the amount of $355,366.43. Motion seconded by Councilman Horn. The following voted in favor: Mayor Hamilton, Councilwoman Swenson, Councilmen Geving, Neveaux, and Horn. No negative votes. Motion carried. CONSENT AGENDA: Mayor Hamilton asked if any council member wished to discuss any item on the consent agenda. Item a. Letter of Credit Reduction, DayCo Concrete was removed from the consent agenda. There being no further discussion, Councilman Neveaux moved to approve the following consent agenda items pursuant to the City Manager's recommendations. b. 1978, 1979, and 1980 Temporary Improvement Bonds, Consolidate. RESOLUTION #81-45 C. Set Joint Meeting Date for City Council/Planning Commission, January 6, 1982. d. Fire Station #1 Remodeling. Motion seconded by Councilman Horn. The following voted in favor: Mayor Hamilton, Councilwoman Swenson, Councilmen Neveaux, Geving, and Horn. No negative votes. Motion carried. DAYCO CONCRETE LETTER OF CREDIT: Representatives of DayCo are requesting the Council release the letter of credit for off -structure improvements to their office/warehouse building on Lot 1, Block 1, Chanhassen Lakes Business Park. Staff has advised the owner that the roof -top screening requirements of Ordinance 47 has not been completed. The City Manager recommended reducing the letter of credit to no less than $1,000 to insure that construction of the structure is in NEW HORIZON HOMES, INC. BUILDING TOMORROWS DREAMS TODAY 3131 FERNBROOK LANE NORTH P.O. BOX 1367 MINNEAPOLIS, MINNESOTA 55440 612-559-5770 July 15, 1981 Mr. Bill Monk, City Engineer City of Chanhassen 7610 Laredo Drive Chanhassen, MN 55317 Subject: Chaparral on Lake Ann Chanhassen, MN Dear Mr. Monk: In response to your concerns regarding the method of payment for oversized trunk watermains in the subject project, we request that we be given a credit for oversizing costs against any special assessments. This procedure has a historical base in that it was used in Chaparral. If you should have any questions, please advise. Ver� 'ruby your , f Gregory J. Frank, P.E., Vice President of Land Development GJr^/cr cc: Ed Dunn RECEIVED JUL 161981 CITY OF CHANHASSEN Dunn & Company Real Estate Investments 4940 Viking Drive 600 Pentagon Office Park Minneapolis, MN 55435 (612) 835-1548 July 22, 1981 City of Chanhassen 690 Coulter Drive Chanhassen, Minnesota 55317 Enclosed are the two Petitions for Public Improvements, utilities and streets on proposed Aztec Drive and trunk sanitary sewer which we have signed. Thank you. i C o d i a 1-fy7, / 1 Ed Dunn EBD:ap Enc. RECE,I V ED JUL 23 mi CITY OF CHANHASSEN PETITION FOR PUBLIC IMPROVEMENTS Date July 14, 1981 The undersigned, being owners of the property described below, hereby petition the City Council of the City of Chanhassen for the phased construction of utilities and streets on proposed Aztec Drive (as shown on the final development plan of Chaparral on Lake Ann) from Highway 5 to the north side of the proposed park. That portion of Aztec Drive to be included in the first phase of development would be that segment included in Phases 1 and 2 of the final development plan for Chaparral on Lake Ann: The second and last phase of Aztec Drive improvements should be deferred until Phase 6 is initiated. Y LC.L4 ATM , .4' � � Q�.J�► �ll S Gregory J.� ralk, Vice President of Land Development NEW HORIZON HOMES, INC. Edmund B. Dunn, President CHAN 334, a Minnesota Limited Partnership By Dunn & Curry Real Estate Management, Inc. (a General Partner) ,s CITY OF PU° CHANHASSEN 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937-1900 July 2, 1981 Ed Dunn c/o Dunn & Curry Real Estate Mgmt. Inc. 4940 Viking Dr. Suite 608 Minneapolis, MN 55435 RE: Chaparral on Lake Ann Dear Mr. Dunn: On June 22, 1981, the City Council approved the final develop- ment plan for Chaparral on Lake Ann. Items No. 1,2, and 5 of the attached report were not discussed. I believe these items seriously affect the overall project and restrict the preparation of a development contract until they are resolved. From past conversations, I understand you plan to petition ._for the improvements referenced in Items.1 and 2. If this is still your intent, I recommend you submit these petitions as soon as possible. At the same time, I also recommend you submit a letter stating your position on Item 5. Staff is attempting to determine whether these items will have to go back to the City Council for additional review and approvals. This will hopefully avoid future delays and allow the project to proceed to the construction phase in a timely fashion. If you wish to discuss any of these items, please contact me at your convenience. Sincerely, William Monk City Engineer WM/nd CITY OF 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937-1900 TO: Don Ashworth, City Manager FROM: Bill Monk, City Engineer DATE: June 18, 1981 SUBJ: Chaparral on Lake Ann The following comments and conditions are listed to identify the engineering aspect of the proposed preliminary plat: 1. A feasibility study dated March, 1980 was the result of petitions from area property owners to extend a sanitary sewer trunk to serve their properties. The City Council made no commitment to construct this project municipally, but extension of these trunk lines is required to service much of the proposed plat. 2. A question has arisen concerning the City's partici- pation in assuming a portion of the cost to construct Aztec Drive adjacent to the park. 3. The City -shall require that construction inspection and staking be controlled by the City and performed by its agent. 4. Utility and drainage easements must be platted where utilities cross lots or follow lot lines as well as easements for the ponding areas._ Also, an easement shall be provided across Outlots A and C for extension of sanitary sewer to the Brose property. 5. Trunk watermains are to be constructed within the plat but responsibility for the oversizing costs has not yet been determined. 6. Final construction plans shall be reviewed and approved by this office. P r Chaparral on Lake Ann June 18, 1981 Page 2 7. Access permits must be secured by the developer from MNDQT and Carver County. Right turn lanes shall be constructed at all access road locations. 8. The developer shall be responsible to secure all re-- quired agency approvals and comply with their conditions prior to commencement of construction. 9. Aztec Drive from T.H. 5 to Pueblo Drive, Pueblo Drive, and Aztec Drive from C.R. 17 to Pawnee Drive shall be constructed to a width of 32 feet. 10. A grading plan detailing erosion control shall be submitted for approval with the platting of each phase. r- MINNESOTA ENVIRONMENTAL QUALITY BOARD ENVIRONMENTAL ASSESSMENT WORKSHEET (EAW) AND NOTICE OF FINDINGS DO NOT WRITE IN THIS SPACE E.R. #: Note: The purpose of the Environmental Assessment Worksheet (EAW) is to provide information on a project so that one can assess rapidly whether or not the project requires an Environmental Impact Statement. Attach additional pages, charts, maps, etc., as needed to answer these questions. Your answers should be as specific as possible. Indicate which answers are estimated. 1. SUMMARY A.. ACTIVITY FINDING BY RESPONSIBLE AGENCY (PERSON) r X Negative Declaration (no EIS) EIS Preparation Notice (EIS required) B. ACTIVITY IDENTIFICATION 1. Project name or title: Lake Ann Planned Residential Development 2. Project proposer(s): Dunn & Curry Real Estate Management, Inc. Address: 4940 Viking Drive, Minneapolis, Minnesota 55435 Telephone. number and area code: (612) 835-2808 3. Responsible Agency or Person:: City of Chanhassen Address: 7610 Laredo Drive, Chanhassen, Minnesota 55317 Person in Responsible:Agency (Person) to contact for further information on this EAW: Bob Waibel (612) 937-1900 4. This EAW and other supporting documentation are available for public inspection and/or copying at: Location: City of Chanhassen City Hall Address: 7610 Laredo Drive, Chanhassen, Minnesota 55317 Telephone: (612) 937-1900 Hours: 8:00 a.m. to 4:30 p.m. 5. Reason for EAW preparation X Mandatory Category - cite Petition Other . MEQB Rule number(s) - 6 MCAR 3.024B(1)(u): Construction of a resi- dential development of 50 or more residential units, any part of which is within a shoreland area as defined by Minnesota State 105.485(1974). 6 MCAR 3.024B(1)(t): Construction of a new or additional residential e - 2 - development consisting of 500 or more units in a sewered area. C. ACTIVITY DESCRIPTIOR SUMMARY 1.- Project location County: Carver. City/township name: Chanhassen Township number: 116 (North) Range number: 23 West` Section-..number(s): 11 Street address (if in city) or legal description: The property which. is the site of the project is legally described in documentation available for public inspection at Chanhassen City.Hall. All of the property is located within the Urban Service Area as de ' fined by the Metropolitan Council, Development Framework Guide. The Urban, Service Area is,that.portion of the metropolitan area J n which governmental agencies shouldIplan-to support urban development and redevelopment. Similarly, all of ,the property is scheduled for urban. services in 1979 pursuant to the Metropolitan Council -approved Chanhassen Interim Comprehensive Sewer Plan. 9 3 4 Type and scope of proposed project: Lake Ann is a Planned Residential Development consisting of 140 single family units, 168 two-family units, 172 townhome units and 120 multi- family units on 203 acres of land. The site has been approved for rezoning from R-lA Agricultural Residential District to P-1 Planned Residential District. (See Exhibit 3 - Overall Site Plan). The project proposer intends to develop Lake Ann in nine phases over a five to seven year period (Exhibit 4 - Phasing Plan Graphic) in accordance with an overall Land Use Plan to be approved by the City. Development of each stage of the project will be contingent on receipt of final approval from the City. Estimated starting date (month/year) Estimated completion date (month/year) Spring, 1981. 5. Estimated construction cost: $48,000,000 5 - 7 years from the Spring of 1981. 6. List any federal funding involved and known permits or approvals needed from each unit of government .and status of each: Unit of government (federal , Name or type of permit/approval Status state, regional, local) _ _ or federal funding City of Chanhassen Zoning Approval (Rezoning from R-ILA Application Agricultural Residential District to Approved P-1, Planned Residential District) - 3 - 6. Continued Unit of government (federal, state,, regional, local) City of Chanhassen City of Chanhassen City of Chanhassen Riley -Purgatory Creek Watershed District Name or type of permit/approval or federal fundi n4 - Subdivision Approval Grading Permit Building Permit Land. Alteration Permit for Earth Disturbance Activities Status Application pending Application pending Applications to be filed as de- velopment pro- gresses App1ications -to be filed as.de- velopment pro- gresses Federal Housing Administra- Mortgage Insurance Application tion, United States Depart- pending ment of Housing and Urban Development 7. If federal permits, funding or approvals are involved, will a federal EIS be prepared under the National Environmental Policy Act? NO X YES UNKNOWN II. ACTIVITY:DESCRIPTION A. INCLUDE THE FOLLOWING MAPS OR DRAWINGS: 1. A map showing the regional location of the project. (Exhibit 1.) 2. An original 8-2 x 11 section of a U.S:G.S. 7-2 minute, 1:24,000,scale map with,the activity or project area boundaries and site layout delineated. Indicate quadrangle sheet name. (Original U.S.G.S. sheet mustbe maintained by Responsible Agency; legible copies may be supplied to other EAW distribution points.) (Exhibit 2.) 3. A sketch -map of the site showing location of structures and including significant natural features (water bodies, roads; etc.). (Exhibit 3 - Overall Site Plan.) 4. Current -photos of the site must be maintained by the Responsible Agency-.- Photos need not be sent to other distribution points. -4- 5. Exhibit 4 - Phasing Plan Graphic 6. Exhibit 5 - Topography and Vegetation Map Graphic 7. Exhibit-6 - Slopes/Soils'Graphic 8. Exhibit--7 - Preliminary Water Plan Graphic 9. Exhibit 8 - Preliminary Grading Plan Graphic 10. Exhibit 9 - Preliminary Storm 'Sewer .Plan Graphit 11..'Exh;ibit 10 - Preliniina'v Sanitaiy'Sewer Plan -Graphic 12. Exhibit 11 - Storm Sewer Details with Descriptions B. PRESENT LAND USE 1. Briefly describe the present use of the site and lands adjacent to the site. Portions of the site are presently being used for agricultural pur- poses. The balance of the site is undeveloped grasslands and -woodlands. The proposed land use is compatible with existing and planned contiguous development. The Chanhassen Lakes Business Park lies across Highway 5 to the south of the site. The business park is partially developed and at full development will include a mixture of light industry and office uses. To the north of the site is.Greenwood Shores, a single family subdivision. Lake Ann and Lake Ann Park border the site on the west. To the east of the site is crop and grassland beyond which lies the proposed HRA Chanhassen Downtown Redevelopment Area. A portion of the project's western border is contiguous with Lake Ann and a portion of the residential development will take place within the shoreland of the lake as defined by Minnesota Stat. 105.485. 2. Indicate the approximate acreages of the site that are: a. Urban developed: b. Urban vacant: c. Rural developed: d. Rural vacant: 203 acres e. Designated Recreation/Open Space: f. Wetlands (Type III, IV, V): -5- g. Shoreland (as defined by Minn. Stat. 105.485 Shoreland Manage- ment Act - land within 1,000 feet from the normal high water mark of a lake): 49.5 acres h. Floodplain (as defined by State Standards and Criteria for Manage- ment of Floodplain areas of Minnesota (100,year)): .85 acre i. Cropland/pasture land: 61 acres j. Forested: 22 acres 3. List names and sizes of lakes, rivers and streams on or near the site, particularly lakes within 1,000 feet and rivers and streams within 300 feet. Lake Ann is an 100 acre lake with an average depth,of.twenty (20) feet. Its surface elevation is approvimately 956 feet above mean sea level. According to Minnesota Department of Natural Resources, Lake Ann has a permanent fish population but does.experience some winter kil°1 problems. Water quality parameters for Lake Ann are as follows: Secchi disc trans- parency - 5 feet; Chlorophyll a - 17 micrograms per liter; total phosphorus - 40 micrograms per liter, Lake Ann is the middle of a chain of three small lakes which form the headwaters of Riley Creek. Lake Lucy drains 1,000 acres and flows into Lake Ann; Lake Ann drains 300 acres and flows into Lake Susan which discharges into Rice Marsh Lake. The Lake Ann Watershed is comprised primarily of rolling glacial hills with loamy well -drained soils. C. ACTIVITY DESCRIPTION 1. Describe the proposed acrivity, including..staging of development (if any), operational characteristics, and major types of equipment and/or processes to be used. Include data that would indicate the magnitude of the proposed activity (e.g., rate of production, number of customers, tons of raw materials, etc.). C Construction of 600 residential units, of which: 120 are -in multi -family form 172 dwelling units are in towhhomes 168 dwelling units are in duplexes 140 are single-family units 600 total units on 203.acres of land. As shown on Exhibit 4, the Planned Residential Development will be de- veloped in nine phases commencing along County Road 17. The following is a breakdown of the nine phases by type of residential unit, total number of units and projected construction starting date. PHASE I - SPRING 1981 48 Townhome Units 16 Two -Family Units 12 Single -Family Units 76 PHASE 2 80 Townhome Units PHASE 3 42 Single -Family Units PHASE 4 44 TownHome Units 18 Two -Family Units 7 Single -Family Units 69 PHASE 7 48 Two -Family Units PHASE 9 120 Multi -Family Units PHASE 5 68 Two -Family Units PHASE 6 37 Single -Family Units. PHASE 8 42 Single -Family Units 18 Two -Family Units Heavy equipment will be utilized for grading and utility installation. It is anticipated that almost all of the fill required for site prepara- tion will.be available on the site itself. 2. Fill in the following where applicable: a. Total project area: 203 acres or length: b. Number of housing or recreational units: 600 c. Height of structures: 15 ft. avj., 40 ft. max. d. Number of parking spaces: 1,200. As required by the Chanhassen Zoning Ordinance, there will be 2 parking spaces per residential unit. Each unit will have at least one garage parking space. As required by the Zoning Ordinance, the two-family, R-2 units will have two garage spaces per unit. The R-4, apartment units will have at.least one garage space per unit and some surface parking. e. Amount of dredging: None f. Liquid wastes requiring treatment: 108,150 gal/day The City of Chanhassen's sanitary sewer system will have an increased load of 108,150 gallons per day at full development.of the project based on a factor of 75 gallons per person per day ("Preparing the EAW," Minnesota Environmental Quality Board, March, 1977): 1,442 persons at full development (3.3 persons/single-family unit,. 2.3 persons/2-6 family unit, 1.65 persons/6+ family unit) 1,442 persons x 75 gal/person/day = 108,150 gal/day g. Size of marina and access channel (water area): None h. Vehicular traffic trips generated per day: 4,125 ADT 140 single-family and estate units at 10.0 trips/day = 1,400 trips 168 two-family units at 6.1 trips/day = 1,025 trips 172 townhomes at 6.1 trips/day = 1,,050 trips.. 120 apartment units at 5.4 trips/day = 650 trips Total = 4,125 ADT mm i. Number of employees: None j. Water supply needed: 124,444.gal/day The City of Chanhassen's water distribution system will have an increased load, of 124,444. gallons per day at full development of the project based on a- factor of 86.3 gallons per person per day (75 gallons per person -per day + increase for "lost water" - water used for sprinkling; etc.). ("Preparing -the EAW," Minne- sota Environmental Quality Board, March, 1977). 1,442 persons x 86.3 gallons/person/day = 124,444 gal/ day k. Solid waste requiring disposal: 923 tons/year At full development, the project will require the disposal of 923 tons per year of solid waste based on a factor of .64 tons per person per year ("Preparing the EAW," Minnesota Environmental Quality Board, March,-1977). 1,442 persons x .64 tons/person/year = 923 tons/year 1. Commercial,..retail or industrial flood space: None III. ASSESSMENT OF POTENTIAL ENVIRONMENTAL IMPACT A. SOILS AND TOPOGRAPHY 1. Will the project be built in an area with slopes currently exceeding 12% No X Yes 2. Are there other geologically unstable areas involved in the project, such as fault zones, shrink -swell soils, peatlands, or sinkholes? No X Yes 3. If yes on 1 or 2, describe slope conditions or unstable area and any measures to be used to reduce potential adverse impacts. A small portion of the project site, as shown on Exhibit 6, is characterized by slopes currently exceeding 12%. Some of these steep slope areas will be preserved for park and open space. The majority of the steep slope areas will be developed as single-family lots of 20,000 square feet or more. However, there will be some slope alteration in accordance with City subdivision standards. Development throughout the phases-wi:11. be in accordance with a soil erosion plan or plans, consistent with Watershed District and City requirements, to mitigate potential, adverse impacts associated with development on relatively steep slopes. According to the soil survey conducted by the United States Depart- ment of Agriculture, Soil Conservation Service discussed in greater detail in the following paragraphs, the project site includes small areas of peat soils. In order to mitigate potential adverse impacts associated with construction on such restrictive soils, the project proposer has determined that no residential units will be located in the peat areas. No remova.l%or alteration of the peat is contem plated.. Development"on areas of restrictive.Gl.encoe silty_ clay: loam soils may require excavation and compacting. or replacement with more suitable soils. 4. Indicate suitability of site soils for foundation, individual septic systems, and ditching, if these are included in the project. According to the soil survey conducted by the United States: Department of Agriculture, Soil Conservation Service, three predominant building group soil series have been identified on the Lake Ann Planned Residential Development Site. The characteristics of these soils are described below in terms of engineering properties which deter- mine their development potential (Soil Survey of Carver County, Minnesota, Soils in Community Development). The number of each building group series is followed by a parenthetical listing of the soils found in that particular soil. series. Soil conditions, with the few exceptions noted below, are generally favorable for the Light footing loads required for the proposed residential construction. Mitigative measures will follow standard engineering practice with roadway construction according to City specifications. Septic systems will not be required as sanitary sewer will be made avail able to the site. a. Building Group Series 4 (Hayden and Lester Loams, 2-6% slopes). Soils in Building Group Series 4 are deep, well -drained loamy soils characterized by moderate permeability and good soil strength. They do not have a seasonal high water table and are not susceptible to flooding. Series 4 soils are generally suitable for most types of urban development, including resi-- dential construction. The majority of the project site falls within Building Group Series 4. b. Building Group Series 5 (Hayden and Lester loams, 6-12% slopes). Soils in Building Group Series 5 are deep, well -drained, moder- ately permeable soils with adequate soil strength for construction. The depth of the water table exceeds ten feet. Although erosion is a hazard on the steeper slopes when soils are exposed and left bare during construction, the project proposer has formulated a soil erosion plan to mitigate potential adverse impacts asso ciated with earth disturbance activities (See Section IIIA7). Similar soil erosion plans consistent with Watershed District and City requirements, as applicable, will also be formulated for each of the subsequent development phases. -9- c. Building Group Series 10 (Peat and Muck, Glencoe Silty Clay loam . Soils in Building Group Series 10 are poorly -drained soils lying in depressions. They are characterized by moderate permeability and fair to poor bearing strength. Since the wetness and poor soil strength are unfavorable development features, peat and muck soils will remain undeveloped and will be preserved for drainage easements and ponding areas. Development on the very small portion of existing. Glencoe silty clay areas will occur, if at all, after replacement or compacting of the re- strictive soils. Mitigative measures can be 'undertaken during construction, if needed, to minimize potential adverse impacts of these soil characteristics. 5. Es ti mate -_fhe total amount of grading and filling that will be done: Earthwork.quan_tities are unknown at this time What percent of the site will be so altered? Approximately 70 percent of the site will be altered by the earth disturbance activities. The land affected has already been subjected to alteration by conversion of native vegetation to cropland and pasture. The natural amenities have been identified and respected in site planning and will be protected during construction of all development phases. To ensure that neither Lake Ann nor its shore- line will be altered, an 80 foot wide strip along the lake's eastern shoreline will be dedicated to the City in connection with subsequent development. No shoreline woodlands will be removed. Separate grading plans for each of the subsequent development phases will be prepared for review and approval. by the City and the Water- shed District, as appropriate. They will be based on the design principles described in the preceding paragraph. 6. What will the maximum finished slopes be? The maximum finished slopes will be 3:1. All slope alterations will conform to City sub- division standards. 7. What steps will be taken to minimize soil erosion during and after construction? As indicated above, preparation of the site for residential con- struction does not entail any alteration of Lake Ann or its shore- line. Grading and other con- ducted so as to minimize adverse- impacts on soils and topography. Roads- as -far -as - possible will follow. natural contours, swales. and ridges. Temporary, detention ponds with outlets into drainage channels will.be installed and maintained during, -construction -to remove sedi-. ment.and_assimilate-nutrients from•runoff,waters on lands undergoing development. Ponds will be sized to meet Watershed District stan- dards and their capacity will be maintained by dredging, as needed, during construction. Straw bale -sediment dams will also be employed during construction to 'reduce the velocity of the runoff waters. Exact locations will be determined during the platting and grading permit review processes. - 10- Implementation of these controls will safeguard Lake Ann*watar quality. The post -development. rate of off -site storm water runoff will be ;the same as --the rate. -of pre-.de.ve-lopment-runoff -and- signi- fftanvfertiTizer'use associated with agricultural land usewill be eliminated: ' After- construction, a permanent storm sewer system utilizing per- manent detention ponds with control outlets will be part of an area -wide long-term erosion control and storm water management system. All disturbed areas will be re -vegetated as soon as practicable in the development process. B. VEGETATION 1. Approximately what percent of the site is in each of the following vegetative types: Woodland 10% Cropland/Pasture 27% Brush or shrubs 5% Marsh 0% Grass or herbaceous 58% Other (specify) Active cultivation of a significant portion of the site through 1980 has drastically altered native vegetation by clearing of woodland areas for crops and pastures. Some native grassland has also been eliminated by this agricultdral development. 2. How many acres of forest or woodland will be cleared, if any? 6 - 8 acres Approximately 22 acres of the Lake Ann Planned. Residential Develop- ment consist of woodlands. It is estimated that 2.0 acres of such woodlands are located along the Lake Ann shoreline. None of these shoreland woodlands, with the exception of diseased trees, will be removed or subjected to earth disturbance activities. The remaining 20 acres of woodlands are located primarily in the west -central portion of the site. After grading and other earth disturbance activities, approximately 12 to 14 acres of non -shoreline woodlands will remain unchanged. Many of these remaining non -shoreline wood- lands are 1 ocated in an area southeast of Lake Ann, which the City has planned to purchase for park and open space. The project -pro - poser's decision to retain all existing shoreline woods and vegeta- tion and the majority of non -shoreline woodlands, as described in greater detail in Section IIIA7 above, conforms with City natural resource policies which require "adequate on- and off -site pro- tection of existing vegetation. . . to minimize damage to vegetation or wildlife habitat." Consistent wfthl Watershed -Di strict review criteria natural.vegetation.and shoreline_woodlan-ds within.50 feet of Lake. Ann wi-l1 remain tan`disturbed. (Riley° Purgatory Creek Watershed, District Overa'Tl_Plan.)' 3. Are there any rare or endangered plan species or areas of. unique botanical or biological significance on the site? (See.DN R publication, The Uncommon Ohes.) ' X No - Yes C. FISH AND WILDLIFE 1. Are there any designated federal, state or local wildlife or fish management areas or sanctuaries near or adjacent to the site? X No Yes 2. Are there any known rare or endangered species of fish and wildlife on or near the site? (See DNR publication'The Uncommon Ones.) X No Yes If yes, list the species or area and indicate any measures to be used to reduce potential adverse impact. 3. Will the project alter or eliminate wildlife or fish habitat? No X Yes Lake Ann itself and its associated fish habitat will not be altered by the project. As discussed in Section IIIB2 above, a portion of the existing non -shoreline woodlands will be cleared, thus elim1nat- ing existing wildlife habitat for small birds and small animals. 4. If yes on any of questions 1 - 3, list the area, species or habitat and indicate any measures to be used to reduce potential adverse impact on them. Topographical and site planning constraints preclude retention of all wildlife habitat associated with non -shoreline woodlands. Some of the non -shoreline woodlands will remain or be transplanted to other portions of the site and landscaping by individual builders, together with replanting initiated by homeowners, will in the long run support small avian and mammalian populations. However, the most significant feature of the site,. Lake Ann and its shoreline, will be maintained in its natural state. Shoryeland development densities and shorel4ne : preservati on- have' bten approved - by: -the -Mi.nne5ota- Depart- men.t nor€: -.Natural:, Res©bree"s. (Letter from K. Lokkesmoe to B. Waibel , dated June 9, 1980.) D. HYDROLOGY 1. Will the project include any of the following: If yes, describe type of work and mitigative measures to reduce adverse impacts. NO YES a. Drainage or alteration of any lake, pond, marsh, lowland or groundwater supply X _ b. Shore protection works, dams, or dikes X MTH 0 No Yes c. Dredging or filling operations X d. Channel modifications or diversions X e. Appropriation of ground and/or surface water X f. Other changes in the course, current or cross- section of water bodies on or near the site X 2. What percent of the area will be converted to new impervious surface? Construction of residential buildings, park areas, walk areas and other associated urban development features will convert approxi- mately 20% of the project site to new impervious surface. 3. What measures will be taken to reduce the volume of surface water runoff and/or treat it to reduce pollutants (sediment, oil, gas, etc.)? Drainage easements will preserve the natural drainage systems. Temporary sedimentation ponds and earth and.hay bale diversions will be employed to control -sediment and reduce velocity of run- off. After construction, permanent storm water detention ponds will be incorporated into the storm drainage system to'serve as part of a long-term erosion control and storm water management system. 4. Will there be encroachment into the regional (100 year) floodplain by new fill or structures? X No Yes Floodplain elevation is 957.0; site low point outside of the park area is 970.0. If "yes," does it conform to the local floodplain ordinance? No Yes 5. What is the approximate minimum depth to groundwater on the site? Approximately 10-foot minimum depth. (Statistic from the Carver County Soil Report) E. WATER QUALITY 1. Will there be a discharge of process or cooling water, sanitary sewage or other wa'stewaters to any water body or to groundwater? X No Yes. If "yes," specify the volume, the concentration of pollutants and the water body receiving the effluent. 2. If discharge of wastewater to the municipal treatment system is planned, identify any toxic, corrosive or unusual pollutants in the wastewater. Not applicable. - 13 - F. 3. Will sludges be generated by the proposed project? X No ' Yes If "yes," specify the expected volume, chemical composition and method of disposal. 4. What measures will be used to minimize the volumes or impacts identified in questions 1-3? All discharge will be treated at Metro Waste Control Commission facilities. -They will be residential type only and will not contain any exotic materials. 5. If the project is or includes a landfill, attach information on soil profile, depth to water table, and proposed depth of disposal. Not applicable. AIR QUALITY AND NOISE 1. Will the activity cause the emission of any gases and/or particulates into the atmosphere? _ No X Yes If "yes," specify the type and origin of these emissions, indicate any emission -control devices or measures to be used, and specify the approximate amounts for each emission (at the source) both with and without the emission -control measures or devices. The project will be emitting gases and particulates from the heating and cooling systems of the residential structures which will comply with the Minnesota Energy Conservation Code. No emission control devices are planned. Concentration of automobile emissions may occur at entry and exit points subject to mitigation by proper vehicular circulation. Increased traffic generated -by the proposed Planned Residential Development will result in an increase in the ambient level of carbon monoxide in the project vicinity. The incremental nature of the project will reduce the severity of this potential adverse impact on air quality levels. As discussed in greater detail in IIIJ below, scheduled and planned regional roadway improvements will improve vehicular circulation and reduce traffic congestion; thereby minimizing adverse air quality impacts associated with trips generated by Lake Ann residents. In addition, the project proposer and individual builders can be encouraged to promote and market -usage of mass transit, car pooling and other shared ride programs which will reduce the number of trips attri- butable to the proposed development (See discussion of "Minnesota Rideshare" program sponsored by the Minnesota Department of Trans- portation in Section IIIG2 below). - 14 - During construction, there wil.l_be a short-term adverse a.ir quality impact from fugitive dust generated by construction activities. If required, -watering will be employed -to reduce dust generated by pulverization and soil abrasion: City ordinances and other applica- ble development controls will be followed. 2. Will noise or vibration be generated by construction and/or operation of the project?... No X Yes If yes, describe the noise source(s); specify decibel levels (dB(A)), and duration (hrs/da) for each and any mitigative measures to re- duce the noise/vibration. Heavy equipment will be employed on the site to implement the grading plans and, to a lesser extent, other construction activities. This equipment will be muffled in accordance with applicable state regula- tions. No further mitigative measures are planned. 3. If yes on 1 or 2, specify whether any areas sensitive•to•noise or reduced air quality - (hospitals, elderly housing, wilderness, wild- life areas, residential developments, etc.) are in the affected area and give distance from source. As described in Section IIB above, neighboring land use does not consist of unusually sensitive receptors other than Lake Ann Park and residential occupants in the general project area. Local govern- ment requirements, if any, for noise abatement will be met. G. LAND RESOURCE CONSERVATION, ENERGY 1. Is any of the site suitable for agricultural or forestry production or currently in such use? No .X Yes If yes, specify the acreage involved, type and volume of marketable crop or wood produced and the quality of the land for such use. Approximately 60 acres of the site have been utilized for cropland and pasture. Corn, hay and small grains have been cultivated. Approximately 15% of the site consists of prime farmlands as de- fined by the United States Department of Agriculture. These prime farmlands are located in the central portion of the site. Prime farmlands are those that have the best combination of physical and chemical characterisitics for producing food, feed, forage, fiber and oilseed crops. (7 CFR Section 657.5(a) Identification of Important Farmlands.) Although the loss of this farmland is an adverse impact, the selection of the project site was based in part on the suitability of its soils and topography for residential development. The s-ite is within one-half mile*ofvdowntown Chanhassen. It is adjacent- to existing si.ngl'e--fa iAly. development' to the north known as -Greenwood Shores-. The site is`near to existing:develop.ed land, the Chanhassen Lakes Business Park. It is or will be served by essential services, thereby satisfying a regional planning goal of - 15 - channeling incremental growth into areas already served by public facilities. From a local perspective, it is inevitable that some prime and productive farmlands will be converted to urban land uses, to serve the needs of the City's.growing.population. Finally, the adoption by the Minnesota Legislature of the 1980 Agricultural Preserved Act provides new tax and related incentives aimed at the preservation of agricultural farmlands in the metropolitan area. 2. Are there any known mineral or peat deposits on the site? X No Yes If yes, specify the type of deposit and the acreage. Some peat soils are located on the site but such restrictive soils do not constitute deposits suitable for mineral extraction activities. As described in Section IIIA3 above, all on -site peat soils will remain undisturbed by grading and other construction activities. 3. Will the project result in an increased energy demand? No X Yes Complete the following as applicable: a. Energy requirements (oil, electricity, gas, coal, solar, etc.) Estimated Annual Peak Demand (Hourly or Anticipated Firm Contract or Type Requirement Daily) Surbrner 'Winter - Supplier Interruptible Basis? Natural Gas 67,200 mcf* Not Applicable Minnegasco Firm Electricity 2.3 x 106 KWH* Not Applicable NSP Firm *Federal Energy Administration Interagency Task Force, Project Independence, "Residential Demand - North Central Region," 1970. b. Estimate the capcity of all proposed on -site fuel storage. There are no proposed on -site fuel storage facilities.. c. Estimate annual energy distribution for: space heating 70% appliances and lighting, etc. 8- clothes drying 4% processing Not Applicable water heating 14% cooling 4% (Source: Energy Conservation Throu h Land -else Planning, Metro- politan Council, August-1979 figures from Minnesota Energy Agency)). d. Specify any major energy conservation systems and/or equipment incorporated into this project. - 16 - The Lake Ann Planned Residential Development, as noted above, will result in an increased energy demand. However-, the pro- posed development indirectly reduces energy consumption by avoiding costly energy output for extension of services to areas not served by essential services. In addition, studies have shown that the planned development concept and mixture of housing types can reduce energy consumption (The Costs of Sprawl/Executive Summary cited in Energy Conservation Throu h Land -Use Planning, Metropolitan Council, August, 1979. Department of Energy studies have also shown that multiple - dwelling units and townhomes are more efficient energy consumers than the single-family detached dwelling unit. Increased residential energy consumption will be mitigated by compliance with Minnesota's 1976 Energy Conservation Code which applies to all types of new buildings. The Energy Conservation Code is based on a national standard known as ASHRAE 90-75 and is designed to reduce energy waste by establishing strict require- ments for building on slopes, selection of heating, ventilation and air conditioning equipment, water heating and electrical distribution systems. Issuance of a building permit is con- tingent on compliance with these standards, which have been shown to reduce total household energy consumption in the North Central region of the United States by approximately 15%. (Arthur D. Little, Inc., "Energy Conservation in New Building Design; An Impact Assessment of ASHRAE 90-75," cited in Energy Policy and Conservation Report, 1978.) Although the proposed development will result in increased transportation energy consumption due to increased trip genera- tion, this. adverse impact may be lessened somewhat by the proximity of the site to a developing employment center, the Chanhassen Lakes Business Park and by active promotion of the "Minnesota Rideshare" program described in greater detail in Section IIII3 below.) e. What secondary energy use effects may result from this project (e.g. more or longer car trips, induced housing or business, etc.)? Although the proposed development will resultin generation of increased automobile trips, it fulfills.a regional goal of pro- moting development in areas served by essential services and public facilities. The project area is generally served by mass transit and increased ridership on available routes will conserve energy. (See also Section IIII2 below.) H. OPEN SPACE/RECREATION 1. Are there any designated federal, state, county or local recreation or open space areas near the site (including wild and scenic rivers, trails, lake accesses)? No X Yes - 17 - If yes, list areas byname and explain how each may be affected by the project. Indicate any measures to be used to reduce adverse impacts. According to the recreation open space chapter of the Metropolitan Development Guide, -originally adopted by the Council in 1974, Chan- hassen is within the Sector 8 regional recreation area, a sector that is currently deficient in regional recreation open space. Sector 8 needs are planned to be met by the acquisition and/or development of significant regional open space facilities in this sector and adjoining sectors. As required by the Metropolitan Parks Act of 1974, the Metropolitan Council has. prepared a new Recreation Open Space Development Guide - Policy Plan (the Policy Plan) which updates and replaces the recreation open space chapter of the Metropolitan Development Guide. The Policy Plan sets forth detailed policies and recommendations concerning development, operation and maintenance of regional parks and park reserves, two special use sites and a network of trails. The Policy Plan identifies Lake Minnewashta Regional Park as an existing regional park facility which is Tocated approximately five miles northwest of the project site. Approximately 350 acres of the proposed 390 acre facility have been acquired or funded and will be developed for camping, picnicking, swimming and boating in the 1980-1985 five-year capital improvement planning period. Riley Lake Regional Park is a proposed regional park facility located approximately 3-5 miles southeast of the project site in Eden Prairie. Acquisition of approximately 240 acres is scheduled.for 1984, with development for biking and hiking trails, picnicking and swimming planned for 1985-1990. Carver Park Reserve is an -existing regional park reserve located approximately 10 miles west of the project site; 2,380 acres of the proposed 3,440 acre facility have been acquired or funded and are developed for a variety of recrea- tional uses. Acquisition of the remaining 160 acres is expected to be completed by 1984 with full development in the 1986-1990 planning period. The Policy Plan also shows a regional trail corridor con- nection between Lake Minnewashta Regional Park and Riley Lake Regional Park. Exact trail alignments, boundaries and uses will be determined through subsequent master planning. Lake Ann Park forms the western border of the site. It is 62 acres of passive and active recreation space. An expansion of Lake Ann Park is planned by dedication of 22.8 acres by the sponsor and the purchase of 11.6 acres by the City of Chanhassen. I. TRANSPORATION 1. Will the project affect any existing or proposed transportation systems (highway, railroad; water, airport, etc.)? No X Yes If yes, specify which part(s) of the system(s) will be affected. For these, specify existing use and capacities, average traffic speed and percentage of trunk traffic (if highway); and indicate how they will be affected by the project (e.g., congestion, percentage of truck traffic, safety, increased traffic (ADT), access requirements). The primary impact of the project will occur on Trunk Highway_ (T.H.) 5, and County Road (CR) 17.. Direct access to the project will be provided from T.H: 5 and CR 17. The impact on these roadways is summarized in the following paragraphs. Existing ADT figures were taken from the Minnesota Department of Trans- portation's 1978 ADT maps; estimated maximum capacity figures were obtained -from consultations with Patrick Murphy, Carver County Traffic Engineer. T.H. 5 west of-CSAH 17 is a two-lane undivided road classified by.Carver County as a minor arterial. Existing ADT on this road- way segment is 12,000. Maximum capacity is estimated to be approximately 12,000 ADT. T.H. 5 east of CSAH 17 is also a two- lane:undivided minor arterial. Its existing ADT, 11,800 ap- proximates its 12,000 ADT estimated maximum capacity. According to the Carver County Traffic. Engineer, traffic.on T.H. 5 in the project vicinity is becoming congested during peak hours: According to the scoping report on the proposed T.H. 212/169 realignment discussed in greater detail below,..T.H. 5 ADT will soon exceed capacity levels even if new lanes are added. CR 17 north of T.H. 5 is a two-lane undivided minor arterial. Existing ADT on this roadway segment is 3,150. Maximum capacity is estimated to be approximately 12,000 ADT. CSAH 17 south of T.H. 5, which is presently under construction, is divided into segments. The northerly segment, from Creek Drive to T.H.-5, is being constructed as a four -lane road with an estimated maximum capacity of approximately 20,000 ADT. The southerly segment from Creek Drive to CSAH 18 (Lyman Boulevard) is being constructed initially as a two-lane undivided road with an estimated maximum capacity of approximately 12,000 ADT. Right-of-way has been acquired for the construction -of two additional lanes. According to the -Carver County Traffic Engineer, commencement of the four -lane upgrading of this southerly segment of CSAH 17 will be dependent on development pressures and the timetable for the proposed T.H. 212/169 re- alignment. -_19 - The Golden -Valley District Office and the Office of Environ- mental Affairs of the Minnesota Department of Transportation recently completed a scoping report on the realignment of T.H. 212/169 in Carver, Hennepin. -and Scott Counties. '(Sco in Report = T:H::212/169;-Carver;'Hennepiii and Scott'Counties, MN/DOT, Golden Valley District Office and MN/DOT Office of Environmental Affairs, February, 1980.)- The proposed T.H. 212 portion of the project would replace a two-lane facility which has many accidents due to its numerous entrances, at - grade intersections and sight distanceproblems, with a new principal arterial with strictly controlled access. It would serve present and future transportcttion needs in the project area;th.at are not or cannot be adequately served by existing trunk highways and county roads. Five design alternatives for T.H. 212 will be more thoroughly analyzed in the Draft En- vironmental Impact statement on the project. Construction of T.H. 212 will have a considerable ameliorative effect on traffic flow on T.H. 5 both east and west of CSAH 17. If fully implemented, projected year 2000 traffi,6 volumes on T.H. 5 would be less than existing traffic volumes. According to the Carver County Traffic Engineer, the addition of even two lanes of the proposed T.H. 212 realignment would markedly benefit T.H. 5 as well as regional roadway traffic movements. According,.to the scoping report, the T.H. 212/169 Draft Environ- mental Impact Statement will be circulated in 1981 with approval of the Final Environmental Impact Statement projected for 1983. Construction is expected to begin in the late 1980's. The primary adverse impact of the Lake,Ann Planned'Residential Development will be on T.H. 5 which is already app..roaching design capacity. At full development, the project proposer's traffic consultant estimates that the project will generate approximately 4125 vehicle trips per day; full development is not expected to be completed until 1985-1987. Significantly, only 1206 ADT at -full development will be added to the segment of T.H. 5 east of CSAH 17 with 301 vehicles per day added west of CSAH 17. The incremental nature of the planned development will reduce the severity of the adverse impact on T.H. 5 traffic flows. Traffic congestion will be most acute during peak hour periods; peak hour traffic is generally assumed to be 10% of ADT. Thus, at full development, the planned development will add approximately 120 vehicles East of CSAH 17 and 30 vehicles.West of CSAH 17 during peak hour flow. Construction of the proposed T.H. 212/ 169 realignment will significantly improve traffic flow on T.H. 5 by re-routing many regional and local daily trips. According to consultations with the Carver County Traffic Engineer and the project proposer's traffic consultant, CSAH 17 and CR 17 have adequate capacity to handle the increased trips generated by the project throughout the phased construction and at full development. -20- 2. Is mass transit available to the site? No X Yes The Metropolitan. Transportation Commission, in accordance with regional transportation policy regarding connection 'of -outlying 'ar, as with central.business districts; provides express bus service to tehe Minneapolis central business district, eight trips daily, Monday through Friday. The nearest stop to the project is on Trunk Highway 5 adjacent to the proposed development. No mass transit is currently available to the'St. Paul central business district. Expansion of existing transit service is not planned and would be contingent on the relationship of growth pressures generated by the project and nd ghbori.ng urban development to budgetary constraints. 3. What measures, including transit and paratransit services, are planned to reduce adverse impacts? Current transit service generally has sufficient capacity to serve the project at full development. Savings in energy consumption can be realized by increased use of metropolitan transit facilities. The Minnesota Department of Transportation is in the.p,rocess'of de- veloping "Minnesota Rideshare," a program aimed at conducting a statewide media campaign to promote the concept of shared riding. The program will be managed by staff assigned to the MN/DOT Office of Transit Administration. Materials and technical assistance for the implementation of ridematching services, carpooling, vanpooling and buspooling by private, nonprofit or public agencies will be disseminated from the seven MN/DOT district offices. Within the metropolitan area, "Minnesota Rideshare" will be coordinated with the Metropolitan Transit Commission's total commuter service project. Staff hiring and training, resource package development and media information dissemination for the program is already underway. The project proposer will actively promote "Minnesota Rideshare" at the home -based end of the work/shop trip in order to reduce all types of vehicular trips generated by the proposed Planned Resi- dential Development and to encourage more efficient use of trans- portation energy resources. J. PLANNING, LAND USE, COMMUNITY SERVICES 1. Is the project consistent with local and/or regional comprehensive plans? No X Yes If not, explain: The project is consistent with regional comprehensive plans. It is also consistent with -the Chanhassen Draft Comprehensive Plan prepared under the directives of the Metropolitan Land Planning Act of 1976. If a zoning change or special use permit is necessary, indicate existing zoning and change requested. - 21 - The project requires a rezoning from R-lA Agricultural Residential District to P-1 Planned Residential District. The City. Council recently approved the planned development rezoning. The Planned Residential Development District allows mixing of housing types and greater flexibility in site design. 2. Will the type or height of the project conflict with the character of the existing neighborhood?' * 'X No Yes If yes, explain and describe any measures to be used to reduce conflicts. 3. How many employees will move into the area to be near the project? Not Applicable. How much new housing will be needed? Not Applicable. 4. Will the project induce development.nearby-- either support -services or similar developments? If yes, explain type of development and specify any other counties and municipalities affected. The existing support services are deemed adequate in capacity to serve additional population proposed for the project and, as a result, the project itself is not expected to induce substantial growth in support services. Local comprehensive plan designation of neighboring lands within the metropolitan Urban Service Area for urban development, coupled with the availability of essential services, is likely to induce similar residential development. 5. Is there sufficient capacity in the following public services to handle the project and any associated growth? Amount, Required Public Service _ for Project Sufficient Ca�Lacity? Water 124,144 gal/day Yes, 8" laterals will be connected to the (See IIC2j) existing 18" trunk water main along Highway 5 at the southern border of the project. The laterals will be constructed according to City requirements. A new well located 1/3 mile south of the project site is expected to pro- duce approximately one million gallons of water per day. Wastewater 108,150 gal/day Yes, the Blue Lake Metropolitan Wastewater treatment (See IIC2f) Treatment Plan is located in the City of Shakopee just north of Highway 101. It dis- charges to the Minnesota River. The Blue Lake Plant is an activated sludge plant which pro- -Z1- Schools 347 pupils: 140 single-family x 1.05 pupils/unit = 147 pupils 168 two-family units x .5 pupils/unit = 84 pupils 172 -townhomes x .5 pupils/unit = 86 pupils 120 apartments x .25 pupils/unit = 30 pupils (Source: Independent School District 112) vides primary and secondary treatment for sewage flow for Chanhassen and other com- munities in sewer service area 4 on the west side of the metropolitan area. The design capacity of this facility is 20 MGD. Current flow to the plant from its service area is approximately 13 MGD. The plant has adequate capacity to serve Lake Ann at full develop- ment. Although design capacity is expected to be reached in 1997, an expansion in that time period is planned to increase the facility's design capacity to 30 MGD. The Lake Susan trunk and Lake Ann Phase I interceptor sewer, a gravity sewer which pro- vides metropolitan interceptor sewer service for that part of Chanhassen lying within the Riley-. Purgatory Creek Watershed District area, is available to serve the project site. It runs from T.H.-5 through the Chanhassen Lakes Business Park to the north shore of Lake Susan. A small portion to the north will use a lift station in an adjacent subdivision, Greenwood Shore. As shown on Exhibit 9, Preliminary Utility Plan, these facilities will be extended to most of the project site. Design criteria and flow rates are consistent with the City's 1971 Comprehensive Sewer Plan. The Lake Susan trunk and Lake Ann Phase I interceptor flow is transported to the Blue Lake Metropolitan Waste -water Treatment Plant by way of the Purgatory Creek Interceptor in Eden Prairie. . Lateral* sewers will be con- structed in accordance with City requirements. The proposed development is located within Independent School District #112 which serves Chanhassen and Chaska. ISD #112'has 5 schools - 3 elementary schools, 1 middle school and 1 high school, with a total capacity of 4,126. Total enrollment as of June 2, 1980 was 3,218 pupils. Chanhassen Elementary School, approxi- mately 1/3 mile east of the project site, is the existing elementary school which will serve the proposed development. The existing middle and senior high schools are located on Highway 41 in Chaska. Pupils will be bused from the site to all three schools. Enrollment in Ind. School District 112 has been stabilizing over the past few years. At full development in 1985-1987, the Lake Ann Planned Residential Development is expected to generate a pupil population of 347. Overall school Im - 23 - district capacity may be adversely impacted by.the..cumulative effects of this. development and- other residential developments within school district boundaries. The severity of this.impact is mitigated significantly by' .the'fact that this phased project will introduce new pupils into -the school system in relatively small increments. In addition, Ind. School District 112 J s discussing with the'City of Chaska and Carver County rental of space in downtown Chaska for short-term elementary school use. Talks have also been initiated with Minnetonka Independent School District 276.regarding the utilization of space in the Excelsior Elementary School and West Junior High School, which is located at the -junction of Highways 41 and 5 in Carver County. (Consultation with Roger Amundson, Independent School District 112.) Solid Waste 923 tons/year Yes, Eden Prairie Sanitary Landfill has suf- Disposal (See IIC2k) ficient capacity to serve the proposed develop- ment. Streets 3.4 Miles Yes. Other (Police, The Carver County Sheriff's Department pro - Fire, Etc.) vides police protection services for the City of Chanhassen. The department has 35 full- time sworn, licensed officers and 12 part- time sworn, licensed officers. Five officers are currently assigned to the Chanhassen area and at least one officer is on patrol there on a 24-hour basis. (Consultation with Captain Newman, Carver County Sheriff's Department.) The incremental nature of the proposed development will reduce the impact on existing police protection services. However, depending on demand and budgetary constraints, future expansion of such services may be re- quired. Fire- protection in the City is pro- vided by a 30-member volunteer fire department supplemented by mutual aid contracts with neighboring communities in Carver County. The existing fire station is located at City Hall on Laredo Drive about mile from the project site. Although a bond issue was recently ap- proved for the construction of a new City Hall and fire station in the northwest corner of the City, the existing fire station in the immediate project vicinity will remain operational. (Consultation with Jack Kreger, Fire Chief.) -24- Storm Sewer The City of Chanhassen has not adopted a com- prehensive -storm drainage plan.- Development on the project site must conform to Riley - Purgatory Creek Watershed District policies regarding storm drainage systems. As shown on Exhibit 8, the project proposer has for- mulated a preliminary overall drainage plan consistent with Watershed District review criteria. A soil erosion plan utilizing temporary detention pponding-and straw bale sediment dams will also'be formulated. If current major public facilities are not adequate, do existing local plans call for expansion, or is expansion necessary strictly for this one project and its associated impacts? See above table. 6. Is the project within a proposed or designated Critical Area or part of a Related Actions EIS or other environmentally sensitive plan or program reviewed by the EQB?... X No Yes If yes, specify which area or plan. 7. Will the project involve the use, transportation, storage, release or disposal of potentially hazardous or toxic liquids, solids or gaseous substances such as pesticides, radioactive wastes, poisons, etc? X No Yes If yes, please specify the substance and rate of usage and any measures to be taken to minimize adverse environmental impacts from accidents. 8. When the project has served its useful life, will retirement of the facility require special measures or plans? No Yes Not Applicable. If yes, specify. K. HISTORIC RESOURCES 1. Are there any structures on the site older than 50 years or on federal or state historical registers? X No Yes 2. Have any arrowheads, pottery or other evidence of prehistoric or early settlement been found on the site? ''X No Yes Might any know archaelogical--or paleontological sites be affected by the activity? .X No Yes -25- 3. List any site or structure identified in 1 and 2 and explain any impact on them. J. OTHER ENVIRONMENTAL CONCERNS Describe any other major. environmental effects which may not have been identified in the previous section. None: IV. OTHER MITIGATIVE MEASURES Briefly describe mitigative measures proposed to reduce or eliminate potential adverse impacts that have not been described before. The preparation of this EAW was necessitated in.part by the location of a portion of the proposed development within the Lake Ann shoreland, as defined by the Minnesota Shoreland Management Act, Minn. Stat. 105.485. As noted above, the development will not have an overall adverse impact on Lake Ann or its shoreline; development -densities have been approved by DNR.. A -soil erosion plan is being formulated for Lake Ann P.R.-D. based on City and Water- shed District requirements. Similar storm drainage and soil erosion plans will be implemented for, subsequent phasesof the development to ensure that post -construction runoff .rates will be less than existing runoff rates for undeveloped land and to mitigate potential adverse impacts of sedimentation and urban runoff. V. FINDINGS The project is a private (� ) governmental '( �X ) action (as defined in MEQB regulations). The Responsible Agency (PersonT, after consideration of the information in this EAW, and the factors in 6 MCAR 3.025 makes the following findings. 1. The project is ( ) is not (X ) a major action. State reasons: The development is entirely within the corporate limits of Chanhassen. The development is consistent with goals and policies- established in the Chanhassen Comprehensive Plan and the Chanhassen Interim Comprehensive Plan. It will conform with pertinent local ordinances and regulations. The development will be served by City water, storm sewer and sanitary sewer facilities. The development will not overburden or otherwise negatively impact the delivery or capacity of municipal services or facilities. 3. The project does'( ) does not'('X ) have the potential for significant environmental effects. State reasons: -26- The development will not'significantly alter important site characteristics. The development will not adversely impact Lake Ann or its shoreline. The development will create a quality residential environment with a variety of housing types and ample open space and recreational oppor- tunities for prospective homeowners desiring housing in a moderate price range. No county, regional or state facilities -will be adversely impacted. No county,. regional or state mutual resources will be adversely impacted. 3. (For private actions only.) The project is ( ) is not;'j( ) of more than local significance. State reasons: VI. CONCLUSIONS AND CERTIFICATION NOTE: A Negative Declaration or EIS Preparation Notice is not officially filed until the date of publication of the notice in the'EQB'Mohitor section of the Minnesota State Register:- Submittal -of the EAW to the EQB constitutes a request for publication of notice in the'EQB Monitor. A. I, the undersigned, am either the authorized representative of the Responsible Agency or the Responsible Person identified below. Based on the above findings, the Responsible Agency (Person) makes the following conclusions. (Complete either 1 or 2). I. X NEGATIVE DECLARATION NOTICE No EIS is needed on this project, because the project is not a major action and/or does not have the potential for significant environmental effects and/or, for private actions only, the project is not of more than local significance. 2. EIS PREPARATION NOTICE An EIS will be prepared on this project because the project is a major action and has the potential for significant environmental effects. For private actions, the project is also of more than local significance. a. The MEQB rules provide that physical construction or operation of the project must stop when an EIS is required. In special circum- stances, the MEQB can'specifically'authorize limited construction to begin or continue. If you feel there are special circumstances in this project, specify the extent of progress recommended and the reasons. b. Date Draft EIS will be submitted: month day year -27- (MEQB rules require that the Draft EIS be submitted within 120 days of publication of the. EIS Preparation Notice in the EQB Monitor. If special circumstances prevent compliance with this time limit, a.written.request for extension explaining the reasons for the re- quest -must be submitted to the EQB Chairman.) c. The Draft EIS will be prepared by (list Responsible Agency(s) or Person(s)): Signature Title %��.. Date B. Attach an. affadavit-certffyi6g:the t� cop ies of,this EAW :we re mailed -to all points on 'the "official EQB distribution list, to the city and county directly. impacted, and -to adjacent counties or municipalities. likely to be, directly impacted by the proposed action (refer to question III.J.4 on page 21 of the EAW.) The affidavit need to be attached only to the copy of the EAW which is sent to the EQB. C. Billing procedures for EQB Monitor Publication State Agency Attach to the EAW sent to the EQB a completed OSR 100 ONLY: form (State Register General Order Form - available at Central Stores). For instructions, please contact your Agency's Liaison Officer to the State R66itter or the Office of the -State Register - (512� 296-8239. 1 r--------- t ST FRANCIS 1 lstat? ,Ire I III W,•,1• �O w' 1 I I IASI NI IIHI I ANOKA CO. Fnl umlur; I RAmll Y I .;ROW HAMLAKE I FOREST LAKE I NI W'.I AN1- f"PI',I IAKI O� Q• I y I. r•`L.l r . , 1 I DAYTON AN KAI ----- -- LINO LAKES MARINE "•tiV Lt•�t�' I J- CHAMPIIN COON RAPIDS I/y��'y�NCF.MIFRVILLE f I MI AIXI TT004 HIH.O IIANIIYIN 11 RIXI.IrIN� I I.INI 11 N1M1 •. W ASHINGTON CO. i � r+ •I n � r`I •.n.r ul vu wl I'- I 411 NI III IrI Ilrxl lrYAM MAI'11 I,MIIVI t I. EMHIIxNh 1 TII—f�/ '.I I• ! II x111r K1 YN 1-A NR I VII W III KI.•KH : ' ININIIYN vIl I IJ 1 b1 AN HENNEPIN CO I luunuK(rN , I rA 3KI t•1 r•H.•ril I. FI NIIM IN...... Ek VAUNMhI�/rl. I I r/' i Ulpoll♦ �fL "ll��hI�Jid 1 M !1'� SIIII WAIIM ' I II UNI 1IU 1 NYh1A1 I II11 �Axm x 2rlr 1 p29 I I 111h 1. 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LJA NF RICA I I H.1'.K.h 1.� Ilrl SHAKOP[F- I NUM WUUU(—� f 1T1I •:.,I •.':IN l'ANVCN I I: n'.I,N I BURNSYILLE I Clll lll•NII 1-�r (.. SAVAGE I • Ilk I M PRIOR ✓ AIF VAILIT RUSE MOUNT lllll!lI,11: I,•I,I'.\U I, LAKE„ / I NAS IINI.S HAMBUNG L7� LAKEVILLE L-f"-- I • I I I i t YI NM1tll I IIIN I \N I' t'Itl 1 I,�I• I N INI; I ARI l'NI I'Kll I MI'll:l � I _� I M/•N',I,' ; VCRMUCIUN I I- I SCOTT CO. I iApMIMGTOM .I I' \v'• •.: 1 IORDAN I I I I 1 — j r- I J., I I. rl min 1 — I!I M:1:r11 '1 I I I 1�NIIW IN11M HI "•r111 • I '=•Ilr ,', .Ill I IIIII N� l� I 1 I r I IIA MYIIIM I i I I( I I � II. I:,nrl I III I IIII:I r: I..�.11I I:• I MII hVllll� NI W MAYKI 1 I r I " I II Nf W 1'YII. UI I I , ' IIINH I I I I I I I I Ln11L,,,,.,, Oct.74 I 1 NANUUI PN .NI I NV511 Iw;\II PrI•I:n MILES 5 10 IS -20 25 I 1 '•I nnr. TWIN CITIES .METROPOLITAN AREA Political Bounelaries,1974 1 SPRING PARK 9 VICTORIA 17 FALCON HEIGHTS 25 GEM LAKE ANOKA --County ON ONO IU ROBBINSDALE 18 MEND 26 BIRCHWOOD 3 MINNETONKA BEACH 11 SPRING LAKE PARK 19 LILY DALE 27 WHITE HEAR I.u.NI 4 PONKA BAY 12 U S. GOVT 20 GHEY fl.+Ill(, TN BAYPORT Township 5 EXCELSIOR 13 HILLTOP 21 LANDFALL 29 WILI.ERNIE 6 GREENWOOD 14 COLUMBIA HEIGHTS 22 DELLWOOD 30 OAK ►ARK HEIGHII "It-o-.._._ ___ _ Municipality 7 WOODLAND 15 ST. ANTHONY 23 PINE STRINGS 31 LAKELAND SHORES 8 MEDICINE LAKE IH LAUDE ROALE 24 MANTOMEDI 32 ST. MANY'S POINT Regional Location Exhibit # 1 t o 950. 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'�?""�u _s gTM' { P._`� �� 900 kt N—�-Nfl kt.. , __In1� r-'-� 926 L'a 45 e� 5 ,�` l�f ��II �950 �� JIp J\� �� I}�✓- f--� ��\�s � �-�_ �-�� j �� `? ,� \��'� O�� l 5 r� (� CD Irj''\� 1 / 900� exhibit 2 0 4 2 I mile SCALE Shakopee Quadrangle i-------- al —NCI-- ,� 1 fl /.•wC4 t' o�O I - I,11..11-. i ;.... ..X..)1 I•)1 .I IN,I , ,4 - I ANOKA CO. . ul are»•, 1 �� N•rtit Y I .,N...I N•N LARE F�37 L•R[ I NI W '.. •NI,I• I I.IN11I I.AI I A O� I I 'r� [• Gsr T o,Yloll aw a• Llwosaa[s �Slwe i �f1 N Cl•s'�i "• I I Cr•Nrl lw t•OOw .•rIC1 - N4.1., . 1 �i�CT N I I.Y1Llr �- � , w. •Iw1 11 i � I .�I ,I I NY40 M•• 1 WASHIHGTON CO 1 •r,I ' I 7, .1 I. I HF NNI PIN CO " �Y X.•., TI w .r) I 1 r i 1 " S •.w c1.t I •I 7t �It" • I )I 1 I `- ,N1..11 1 wm rl wlr+ll !� Ylm+. r.•wM.lw '�MI �,,, L__.�,y �-' 1�,•I r - I . 1' t •\• , I I I Yu4 .1111 • � -Ir..11 r, .Iw.�( 1 •l -1 1 1, • J_ 111 �■ L11`JJl l—r"v' ,�17 I r• 1[. DOO Y ID.c O.I[ [l N0 1 L� �Z � a41v1 � AI •.1 RAMSEY CO. SAINT r.UL ' a�eu w■D r-.- •). ou o x``�� ''7 �f �,rlw N[A►oLls '\rL ryJ��JDlfrw•YIr OTw INi _ 1 11j) 19 [Sl NODD.VrT 1 �r•I.. 1 I sJ r,f •(Iu) ii19 I —_.._—_-. � INwn rl .. Ul - _�� •ItD+ 1.. r.. r..t IJ '— 1 Ir»NI �I.r» v+enl• SOYIX N101•• .l rl wrU•1 [X. SITE I ...... 1.` UI I 1 (-AHVFN I'll I»• I ....•+ ». I..I..) [...I•y1 yr..•I .e I .» r� • .. ...I... ,.'� .K111A CO 1 •. I • I I rno• �� ( mI ru,. r»v .nurl _ I I f y. 1 �• ,1 N L__ -� Ayr. w.I. .. I•ar•n•' .... .., ", ;• 1 I• 1 , �1 I 4r ..I...D. I •I.r.l1,Nw , I w.,•w SCOTT CO - -1 +__ i .. _ J ' 1 l I••.L NI•N Oct.74 1 I I ' •� •IIl1. S .. III 1! "- - ri I - I TWIN CITIES METROPOLITAN AREA Political Boundaries,1974 I 11.1■r Pass 1 •Ic1o4A if FALCON MLIGN11 A. G[r L.RI AMOKA --- County as oNO /ll SORT■/D ALL 1. .INooTA [••. .1s[M.000 �_— r.w+Llo....•at" 11 1rsINL 1ARl Faso 37 tILToALI z•7 wr111/ NI •N •t•ti1 . IO... ..1 I!111 I*" ".;.I I•,.».1• .+•.....OAT Township 9 I.cl BIOS IL Nlll■OP ?I IAN.TALL _•+. .IIIf sNH G.[[r.00. 14 COLVNII. NIIGNIS 7. /Iflt.00. 1Y. Oa. •a./ r/II.NI♦ �_�_•_ _Municipality .00e/A.. 19 11 •NIrON1 /1 ►1.9 1r F1.G1 I•, LASIL•N. SNO.I1 . NIO.cINI IAR■ I. LAootwo.LC 74 II.NTo•l.1 •Q 1f r.011 ro,■I Regional Location Exhibit +1 17 �_ �� a� - ::L-a7ce'.Ann_;:=4 __• �1- , j� �`-1;- LJ� �•.- 1} n „� .r .,.`� J � 856 r -:n •.`-�S. � j �� _ -,��1 � __t{{if �'•_ - r � ._�f-'.. � I � , /!/- - i ��` Y � -`�-ilk - •� r�� 1J1 �IOpOJ -C )Li •L/ - S`/ �f? �!= i..'�O �; ^sSo` =o 06 r>1Vr j � ■. � :� � - �;•� _ :a,� "' _ �� -� sod =� J - -_-- r, ', - d 9.37�--1 �) _ �\, - —_ `/ /, '�_� � AND' al'�� !'- ��`• `� s � -as-•�`.• p% �• _ 1, _ _ -` \✓�- --- �0 � '\l yt•--I - =C_ � is _ --�``• 1 ` i 9o0 ake953 - --- — - -- --- --- - - C� \` ` �y0- /! J�•"�- 1 'O J --� - �. - .ram` � � �_ -� � �� L el fit, - � `3'-� - ;`?i ". !t �� •�.'�',o � �, - -. ,� ?;'�_i�. �'S• • N, Vim\ ' _. •! r�r ov�� Lox7+``S exhibit 2 ______ 0 ! mile SCALE Shakopee Quadrangle CONTROL STRUCTURE The control -structure.wilI -be used to restrict the rate of runoff and: '.reduce the amount -of sediment entering the lake. The small opening in. -the face of the ,control 'structure will provide .the only outlet. for the pond, up to. -a _ 100=year storm. The 'grate on top of the structure :will provide additional' outlet capacity for a storm in excess -of a- 100-year-frequency storm or for protection-should_the small. opening get clogged:-- This restricted'outlet will cause retention and sedimen- tation to occur -in the pond area. LAKE OUTLETS The outlet structures at the lake will be used to dissipate energy and reduce flow velocities to prevent erosion of the lake shoreline. This will be accomplished.by one of the following methods. First, the high velocity flows will be directed into a manhole where the flow will fal-1. down and into a larger pipe at a relatively, flat grade. This manhole will dissipate energy in the flow and the large pipe will reduce the velocity. Second, a concrete block structure will be constructed at the end of the high velocity pipe. The flow will hit the concrete block which will dissipate the energy and reduce velocity. Both methods will also utilize rip -rap at the outlets to help control erosion. Storm Sewer Details and Descriptions MI exhibit 11 i Ar PLAN VIEW i" X 3'-10" ALUMINUM _KWAY GRATING 3/8" ALUMINUM ANCHIZR BOLTS :AST IN CONC. W/ I VZ OF THREAD _XPOSED 5 NUTS TO SECURE GRATING. POURED CONC. BASE IZ'x I/I!"X 6'-O" ALUMINUM .PLATE; SHAPED TO FIT FLUSH AGINST IM.K a TIMBERS AS. SHOWN. ;ECURE ALUMINUM PLATE TO 114H V/GUN DRIVEN CONC. NAILS 4'! DIA. LAG BOLTS TO SECURE TIMBERS _ATED NORWAY PINE OR APPOVED tQUAL, '►'x 4" X 3=5": TIMBER ( W/ BEVELED ENDS 6 LENGTH FIELD CUT TO FIT.) CONTROL_ STRUCTURE NO SCALE N Ii • !�1 I 1�' • all 1 1 1� 1.1j; ' �1 1 •y •� i� 'JI I • 11- - 1 1� • 4 1 •� f 11• 1 �•� : Il_ •: •, 1f • • 0 0 U. • 00 11 ■ / 1. ti •f •11 Irk --t 1 • ■ 1 9 MIN. POURED CONC BASE FRONT VIEW FACES TD BE TRUE _ TO PREVENT OPENINGS PRECAST 48" DIA. STD; MH W/ SHOP SAWED OPENING AS SHOWN. OPENING 1 A -lop 1 1 i = 1 t t.bA � I • • .• -_ SECTION A -A iL me 11 - It's g s --- Le..A LAKE- OUTLET ENERGY DISSI PATOR NO SCALE lei L if f -35- Lake Ann PUD PLANNED RESIDENTIAL DEVELOPMENT (PRD) or CASE NO. PRD/PCD PLANNED COMMUNITY DEVELOPMENT (PCD) y City of Chanhassen Carver and Hennepin Counties, Minnesota APPLICATION FOR CONSIDERATION OF PLANNING REQUEST Date of Application Escrow Paid Date Received by Applicant Name: Dunn & Curry Real Estate Management, Inc. Last First Initial Address: 4940 Viking Drive Edina Minnesota 55435 Number and Street City State Zip Code Owner: Chan 334 Last First Initial Address: 4940 Viking Drive Edina Minnesota 55435 Number and Street City State Zip Code Address of property in question: Northwest corner of T.H. #5 and County Road #17 Legal description of property in question: (see attached sheet.) Present zoning of property: Present use of property: Proposed use of property: R-1A Rural/farming on portion of it PUD (P2) The following documents shall be attached to this application: Date Received 1. Sketch Plan 2. Preliminary Development Plan 3. Escrow Account Initial -36- Date Received 4. Abstractor's Certificate 5. Final Development Plan Initial I hereby declare that all statements made in this application and on the attached documents are true, and that I shall reimburse the City for all expenses incurred in processing this application for planned unit development. ignat re' of Applicant J I n Sig -hat er of Owner Date Received by Title Date (Following to be completed by Aoning Administrator or City Official) CIIRONOLOGY -- - DATE BY Sketch Plan on Planninq Commission Agenda-------_ Plannin Commission Postponed to _ Preliminary Development Plan on Plannin Commission A enda Plannin Commission Postponed to News a er Publication A acent Propert Owners Notified Publ c Hearing JPlanninq Commission Action Preliminary Development Plan on Council Agenda Council Post oned to Council Action -Preliminary Development Plan Contract Final Development Plan or -Planning Commission Agenda -Planning Commission Postponed to .Final Development Plan on Council -Agenda Council Post oned to Final Development Plan Contract Executed Escrow Returned - Amount: