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1c-1 Lakeside Final Plat Report CITY OF CHANHASSEN 7700 Market Boulevard PO Box 147 Chanhassen, MN 55317 Administralion Phone: 952.227.1100 Fax: 952.227.1110 Building Inspections Phone: 952.227.1180 Fax: 952.227.1190 Engineering Phone: 952.227.1160 Fax: 952.227.1170 Finance Phone: 952.227.1140 Fax: 952.227.1110 Park & Recreation Phone: 952.227.1120 Fax: 952.227.1110 Recreation Center 2310 Coulter Boulevard Phone: 952.227.1400 Fax: 952.227.1404 Planning & Natural Resources Phone: 952.227.1130 Fax 952.227.1110 Public Works 1591 Park Road Phone: 952.227.1300 Fax: 952.227.1310 Senior Center Phone: 952.227.1125 Fax: 952.227.1110 Web Site www.ci.chanhassen.mn.us 1-c -:1 ......,~~~i~ MEMORANDUM TO: Todd Gerhardt, City Manager FROM: Bob Generous, Senior Planner DATE: October 23,2006 SUBJ: Final Plat Approval for Lakeside Planning Case No. 06-26 ~ PROPOSAL SUMMARY The applicant is requesting final plat approval for the first phase of Lakeside consisting of 18 lots, 10 outlots and right-of-way for public streets. The first phase of the development consists of the community building and storm water pond, 11 lots for townhouses on the west side Of the development (W ooddale Builders, Inc.), 4 lots for twin homes on the east side of the development (Charles Cudd Company), Outlot A which will contain the priv ' street and utilities for the project and Outlots I and J, the recreational beach The balance of the outlots will be platted in the future for additional res' development. All subdivisi will be done i completed. A the grades on t any grading 0 retaining walls rest of the deve! nd site grading g atching t permit The subdivision R) regulations for Lakeside Phase 1. A. Rez High De Residential contained WI Lakeside deve B. Preliminary Plat for La c. Site Plan for 231 housing unity building with pool, with a Variance for building height for the condominium units consistent with the Building elevations prepared by Harriss Architects. The City of Chanhassen · A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play. Todd Gerhardt Lakeside Pinal Plat- Planning Case 06-26 October 23,2006 Page 2 D. Conditional Use Permit for a recreational beach lot with a Variance from the requirement that 80 percent of the units be within 1,000 feet of the recreational beach lotFINAL PLAT REVIEW The applicant is requesting final plat approval for the first phase of the development consisting of 18 lots, 10 outlots and right-of-way for public streets. GRADING AND DRAINAGE The 26-acre site is bordered by Highway 212 to the north, Bearpath Golf Course to the east, Lyman Boulevard to the south and North Bay detached townhomes to the west. There are five apartment buildings, bituminous driveways, a gravel path and a playground on the site; these must be removed before building permits will be issued, with the exception of the model permits. Model permits will be issued for Lots 3 and 4, Block 1 and Lots 1 through 3, Block 2. The high points of the property are on the north side and at the southeast comer. The north side of ihesite drains to the wetland on the northwest comer of the property. The remainder of the site drains to a culvert that extends under Lake Riley Drive East and to the pond located within the North Bay development. Runoff from the development will be conveyed to the proposed pond in the northeast comer of Lakeview Road-'East and Lyman Boulevard. The developer's engineer has submitted hydrology calculations for the site. The City's engineering consultant, Kimley-Hom & Associates, has " reviewed the calculations and has determined that the proposed design meets City and MPCA requirements. The wetland in the northwest comer is perched. Therefore, maintaining a three-foot separation between the water level in the wetland and the lowest floor elevation of the adjacent homes is not feasible. A variance from Section 18-40 (4) d of the City Code is required. The developer must provide perimeter draintile along the north side of this building to artificially lower the groundwater elevation so that it will be a minimum of three feet below the lowest floor elevation of the adjacent home. The storm sewer to serve this future lot will be installed with the first phase; therefore, the invert elevation of CB 217 must be 895.6 feet or lower; this elevation is based on the groundwater elevation listed in the soil borings. A draintile stub must be installed at CB 217 with this phase. The lowest opening of the homes adjacent to the wetland must be a minimum 'of one foot above the overflow elevation of the wetland. These homes will be final platted at a future date. The lowest floor elevation of the future unit north of Pond 2 must be a minimum of three feet above the high water elevation of the pond. The lowest floor elevation of all buildings must be noted on the grading plan. Ground (i.e. non-paved) surface grades shall not be less than 2% and shall not exceed 3H:l V. Todd Gerhardt Lakeside Pinal Plat- Planning Case 06-26 October 23,2006 Page 3 Include the missing 884-foot contour north of Pond 2. Delete the extra 884-foot contour west of Lots 1 through 3, Block 2. The grading plan must be revised to reflect the new driveway orientation to the underground parking within Building A. High point elevations between the catch basins must be shown along the east side of Block 2. A drainage and utility easement is required over the wetland. The easement shall encompass the wetland, wetland buffer and high water level of the wetland. An easement is required from the appropriate property owner if any off-site grading is required. If importing or exporting material for development of the site is necessary, the applicant will be required to supply the City with detailed haul rout,es. RETAINING WALLS There are numerous retaining walls proposed throughout the project. Staff has numbered the retaining walls (see attached Retaining Wall Exhibit) to simplify the descriptions of the walls. Wall Length Maximum Height Wall Length Maximum Height Number (approximate) (approximate) Number (approximate) (approximate) 1 720 feet 12.5 feet 12 690 feet 12.5 feet 2 75 feet 4.5 feet 13 60 feet 4 feet 3 105 feet 14 feet 14 255 feet 5.5 feet 4 510 feet 16.3 feet* 15 90 feet 6 feet 5 300 feet 11 feet* 16 30 feet 1 foot 6 30 feet 5 feet 17 30 feet 2 feet 7 90 feet 2.7 feet 18 60 feet 3.7 feet 8 30 feet 4 feet 19 30 feet 1 foot 9 195 feet 3 feet 20 30 feet 2 feet 10 1,125 feet 5.8 feet 21 60 feet 3.6 feet 11 720 feet 2.5 feet** 22 90 feet 10 feet * These high points are at approximately the same location, therefore the combined wall height would be 27.3 feet. ** These high points are at approximately the same location, therefore the combined wall height would be 15 feet. Once the grading plan is corrected: . The length of Wall 15 will likely be reduced. . Walls 16 and 19 will likely be eliminated. . Walls 17/18 and 20/21 will be reduced in height and length, or eliminated. Todd Gerhardt Lakeside Pinal Plat- Planning Case 06-26 October 23,2006 Page 4 Building permits are required for all retaining walls four feet tall or higher and must be designed by a Structural Engineer registered in the State of Minnesota. All retaining walls within a drainage and utility easement require an encroachment agreement. UTILITIES The developer proposes to extend lateral sanitary sewer, watermain and storm sewer within the development. All utilities within this site shall be privately owned and maintained. Watermain will extend from the existing watermain within Lyman Boulevard and Lake Riley Road East. The watermain extension from Lyman Boulevard must be wet-tapped. The hydrant layout must be revised as follows: . Sheet 3: Move the hydrant north of future unit 118 to the north side of future unit 117. . Sheet 3: Add a hydrant on the south side of the parking area, across the road from Lot 1, Block 1. . Sheet 4: Add a hydrant in between future units 139 and 140. Sanitary sewer will extend from two locations within Lake Riley Road East: at the proposed intersection of Lake Riley Trail and just north of the intersection at Lyman Boulevard. Any road closure of Lyman Boulevard due to utility extension must be coordinated through the Engineering Department at least 10 days prior to the requested closure. The developer must provide ingress/egress to the North Bay residents for the duration of the utility extension within Lake Riley Road East. The developer's contractor must contact Gordy Stauff, City of Chanhassen Construction Manager, at least 48 hours in advance of connecting to any public utility. Each new lot is subject to the sanitary sewer and water hookup charges. The 2006 trunk hookup charge is $1,575 for sanitary sewer and $4,078 for watermain. Sanitary sewer and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. All of these charges are based on the number of SAC units assigned by the Met Council and are due at the time of building permit issuance. The developer will be responsible for extending lateral sewer and water service to the lots; therefore, the sanitary sewer and water connection charges will be waived. Staff suggests that the storm sewer west of the retaining wall along the back of the lots within Block 1 be shifted to the west so that any excavation of this storm pipe will not undermine the retaining walles). The 100-scale utility plan cover sheet must show all proposed utilities. All of the utility improvements are required to be constructed in accordance with the City's latest edition of Standard Specifications and Detail Plates. The applicant is also required to enter into a development contract with the City and supply the necessary financial security in the form of a letter of credit or cash escrow to guarantee installation of the improvements and the conditions of Todd Gerhardt Lakeside Pinal Plat- Planning Case 06-26 October 23, 2006 Page 5 final plat approval. A preconstruction meeting is required before building permit issuance. Permits from the appropriate regulatory agencies will be required, including the MPCA, Dept. of Health, Carver County and Watershed District. EASEMENTS The 15-foot wide sanitary sewer easement on the northwest side of the property must be vacated. This easement was obtained in 1979 over the sanitary sewer pipe that connected to the Lake Ann Interceptor. Plow from a portion of the Rogers Addition south of Lyman Boulevard was pumped from a lift station that was located at Lake Riley and Lyman Boulevards. In 1993 gravity sanitary sewer was installed from Lakeview Road East (North Bay Addition) to the intersection of Lake Riley and Lyman Boulevards. New forcemain was installed within Lyman Boulevard to the gravity sanitary sewer which is just west of Quinn Road; from there the flow continues west to Highway 10 1. In 1995 the North Bay development connected the Lakeview Hills sanitary sewer to the new gravity lateral sanitary sewer. The old sanitary sewer line north to the Lake Ann Inceptor was removed/abandoned with the North Bay improvements. STREETS Access to the site will be from Lakeview Road East and Lyman Boulevard. The access to Lyman Boulevard will be approximately 340 feet east of the Lake Riley Road intersection. Staff supports the proposed access spacing due to the severe grades to the east. A median will be installed at the street intersection with Lyman Boulevard and will provide 17-foot wide ingress and egress lanes. All streets within the development will be privately owned and maintained. The streets will be 24 feet wide and will widen to 33 feet at several locations to provide dedicated on-street parallel parking spaces. Guest parking lots and drop-off aisles will be constructed in front of Buildings A, Band C when those buildings are final platted. Due to the timing of final approval for this project, the developer proposes to pave Riley Lake Drive north of Lot 3, Block 2 to Lake Riley Road East, and north of Lot 4, Block 1 to Lyman Boulevard. This development is adjacent to Lyman Boulevard; therefore, the Arterial Collector Pee due for the first phase is as follows: 2.8722 developable acres x $2,400.00/acre = $6,893.39. The future phases of this development will be subject to the fee at the time of final plat. Pavement grades within the development shall not exceed 10%. Todd Gerhardt Lakeside Pinal Plat- Planning Case 06-26 October 23,2006 Page 6 COMPLIANCE There are no minimum lot dimensions or lot areas established for the Lakeside Planned Unit Development. The overall project is limited to 231 dwelling units consisting of twin homes, townhouses, and three condominium buildings and their ancillary uses. Setbacks The PUD ordinance requires setbacks from roadways and exterior property lines. The following table displays those setbacks. Setback Standards Highway 212 50 feet East(Perimeter) Lot Line 50 feet -townhouses/twin homes; Building Height - Condominiums with a minimum of 30 feet Lyman Boulevard 50 feet/30 feet for beach lot West(Perimeter) Lot Line 50 feet Twin Home separation between buildings 15 feet Townhouse separation between buildings 20 feet Minimum Driveway length (to back of curb, 25 feet trail or sidewalk) Hard Surface Coverage 50 % * Wetland: Buffer and buffer setback 16.5 feet and 40 feet Lake Riley 75 feet # Decks, patios, porches, and stoops may project up to seven (7) feet in to the required yard. * The entire development, including the public and private streets and Outlots, may not exceed 50 percent hard coverage. Individual lots will exceed the 50 percent site coverage. LOT INFORMATION TABLE Parcel Area (sq. ft.) Frontage (ft.) Depth (ft.) Notes L 1 Bl 4,465 43 104 Twin home unit L2Bl 4,465 43 104 Twin home unit L3Bl 4,465 43 104 Twin home unit UBI 4,465 43 104 Twin home unit L5Bl 12,743 NA NA Common area Ll B2 3,978 47 86 Town house unit L2B2 3,612 42 86 Town house unit L3B2 4,042 47 86 Town house unit UB2 4,042 47 86 Town house unit L5B2 3,612 42 86 Town house unit L6B2 3,612 42 86 Town house unit L7B2 4,042 47 86 Town house unit L8B2 4,042 47 86 Town house unit Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 7 Parcel Area (SQ. ft.) Fronta~e (ft.) Depth (ft.) Notes L9B2 3,612 42 86 Town house unit LlO B2 3,612 42 86 Town house unit Lll B2 4,042 47 86 Town house unit L12 B2 33,699 NA NA Common Area Ll B3 65,656 98 295 Community Building/storm water pond Outlot A 143,743 NA NA Private Street/Parking Outlot B 106,711 NA NA Future condominium site Outlot C 120,409 NA NA Future twin home sites Outlot D 145,142 NA NA Future condominium site Outlot E 29,716 NA NA Future town house sites Outlot F 10 1,279 NA NA Future town house sites Outlot G 68,790 NA NA Future condominium site Outlot H 115,993 NA NA Future twin home sites Outlot I 34,860 NA NA Beachlot Outlot J 30,341 NA NA Beachlot ROW 75,866 Lyman Blvd. & Lake Riley Road East (1.74 acres) TOTAL 1,035,890 23.78 acres i REVIEW CONDITIONS OF APPROVAL 1. The developer must submit a list of proposed street name(s) and an addressing plan to Chanhassen Building Official and Chanhassen Fire Marshal for review and approval prior to final plat of the property. *This condition has been met. Riley Lake Drive (main road) and Riley Lake Trail (east-west street). 2. Each lot must be provided with separate sewer and water services. *This condition has been met. 3. Additional fire hydrants will be required. Please contact the Chanhassen Fire Marshal for exact location of additional hydrants and any to be relocated. *This condition has been met. 4. A minimum buffer of 16.5 to 20 feet shall be preserved around the perimeter of the wetland. All structures (including parking lots) shall maintain a 40-foot setback from the wetland buffer. All trails and retaining walls shall be modified to remain outside the wetland buffer. The plans shall be revised to reflect the required wetland buffer and wetland buffer setback. Wetland buffer areas shall be preserved, surveyed and staked in accordance with the City's wetland ordinance. The applicant shall install wetland buffer edge signs before construction begins and shall pay the City $20 per sign. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23, 2006 Page 8 *This condition still applies. 5. The plans shall be revised to depict the OHW of Lake Riley, which is 865.3. All structures shall be located a minimum of 75 feet from the OHW. The proposed fire pit shall be located a minimum of 75 feet from the OHW and shall be buffered from the lake by vegetation. No grading or intensive clearing of vegetation shall occur within the shore impact zone (all areas within 37.5 feet of the OHW). *This condition shall be modified as follows: All structures shall be located a minimum of 75 feet from the ordinary high water, OHW (865.3), of Lake Riley. The proposed fire pit shall be located a minimum of 75 feet from the OHW and shall be buffered from the lake by vegetation. No grading or intensive clearing of vegetation shall occur within the shore impact zone (all areas within 37.5 feet of the OHW). \ 6. A conditional use permit (CUP) shall be obtained from the City prior to the operation of a recreational beach lot. *This condition has been met. 7. All existing amenities and/or structures (including any docks, existing beach that is not proposed to remain and the boat launch) on Outlot B, North Bay shall be removed. A boat launch is not permitted. *This condition shall be modified as follows: All existing amenities and/or structures (including any docks, existing beach that is not proposed to remain and the boat launch) on Outlot I, Lakeside, shall be removed. A boat launch is not permitted. 8. The location of the building on Lot 1, Block 1 shall be adjusted to respect all drainage and utility easements. *This condition has been met. 9. The applicant shall supply details about the water feature between the rear yards of the units in Block 3, specifically the source for the water in the water feature. As an alternative to the current proposal, the applicant should consider revising the plans to utilize storm water as an amenity as part of a rain garden system in this area. *This condition shall be modified as follows: The applicant shall supply details about the water feature between the rear yards of the units proposed for Outlots F and H, specifically the source for the water in the water feature. As an alternative to the current proposal, the applicant should consider revising the plans to utilize storm water as an amenity as part of a rain garden system in this area. 10. The applicant shall provide additional information detailing the proposed emergency overflow (EOF) route from Pond 1 to Lake Riley. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 9 *This condition has been met. 11. The grading and landscaping proposed around Pond 1 shall be revised to provide a flat, open area so maintenance equipment can access the flared end sections from Lake Riley Road East without damaging the retaining wall or the landscaping and without being below the NWL of the pond. *This condition has been met. 12. All storm water infrastructure, including catch basins, storm sewer pipes, manholes, flared- end sections, outlet structures, ponds and swales, shall be owned, operated and maintained by the developer and, eventually, the homeowners association. Prior to final plat recording, the developer shall enter into an agreement with the City that outlines the parameters of operation, inspection and maintenance of the storm water infrastructure. This agreement shall be transferred to the homeowners association prior to the developer relinquishing responsibility for the development. *This condition still applies. 13. The SWPPP shall be provided to the City forreview by the Carver Soil and Water Conservation District. *This condition shall be modified as follows: The SWPPP should be revised to include the grading plan, erosion and sediment control plan. 14. The plans shall be revised to show that erosion control blanket will be installed over all areas with 3:1 slopes or steeper. *This condition has been met. 15. A stable emergency overflow (EOF) for the pond shall be provided. The EOF could consist of riprap and geotextile fabric or a turf re-enforcement mat (a permanent erosion control blanket). A typical detail shall be included in the plan. *This condition still applies. 16. Energy dissipation shall be provided for all inlets and outlets within 24 hours of installation *This condition still applies. 17. Wimco-type or other comparable inlet controls shall be used and installed within 24 hours of installation of the inlets. Perimeter controls and inlet protection shall be in place and maintained as needed until 70% of the vegetation is established. *This condition still applies. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 10 18. Typical building lot controls shall be shown on the plan in a typical detail. These controls shall include perimeter controls (silt fence), rock driveways, street sweeping, inlet control and temporary mulch after final grade and prior to issuing the Certificate of Occupancy (CO). *This condition still applies. 19. The proposed storm water pond shall be used as a temporary sediment basin during mass grading. The pond shall be excavated prior to disturbing up-gradient areas. Plans shall show how the temporary basin will be constructed and how water will be diverted to the temporary basin. Berms and/or ditches may be needed to divert water to the pond, and temporary pond outlets are needed. The outlet could be a temporary perforated standpipe and rock cone. The plans shall be revised to include a detail for the temporary pond outlet. *This condition has been met. 20. The proposed silt fence along Wetland Basin B shall be Type 2 silt fence, as specified in Chanhassen Standard Detail Plate 5300. Type 1 silt fence may be used for the remainder of the site. The grading plan shall be revised to show the proposed silt fence following the grading limits for the site and shall be located outside of the required 16.5-foot wetland buffer. Silt fence shall be placed at the proposed high water level elevation of the proposed storm water pond. *This condition shall be modified as follows: Silt fence shall be placed at the proposed high water level elevation of the proposed storm water pond. 21. Street gutters and catch basins are considered "surface waters" and shall be protected from exposed soils with a positive slope within 200 linear feet. Following installation of curb and gutter, silt fence shall be installed curbside along all positive slopes to the street with exposed soils. *This condition still applies. 22. Plans shall be revised to show erosion and sediment control measures for the road ditch along Lyman Boulevard. All perimeter controls shall be inspected by the city and the SWCD prior to grading. *This condition still applies. 23. Details for concrete washout areas where drivers will wash out their trucks and how the water will be treated should be developed and included in the SWPPP. *This condition still applies. 24. Street cleaning of soil tracked onto public streets shall include daily street scraping and street sweeping as needed. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 11 *This condition still applies. 25. At this time, the estimated total SWMP fee, due payable to the City at the time of final plat recording, is $195,293. *This condition shall be modified as follows: The SWMP fee for Lakeside - Phase I (including Lots 1-5, Block 1; Lots 1-12, Block 2; Lot 1, Block 3; and Outlots A, I and J, with credits assigned accordingly) is $47,333.00. 26. The owner/operator of the proposed development shall apply for and obtain permits from the appropriate regulatory agencies (e.g., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency (NPDES Phase II Construction Site Permit), Minnesota Department of Natural Resources (for dewatering), Minnesota Department of Transportation, Minnesota Department of Health) and comply with their conditions of approval. *This condition still applies. 27. Tree protection fencing shall be installed prior to construction around all areas designated for preservation and/or at the edge of proposed grading limits. *This condition still applies. 28. A walk-through inspection of the silt/tree preservation fence shall be required prior to construction. *This condition still applies. 29. No burning permits shall be issued for tree removal. All trees removed on site shall be chipped and used on site or hauled off. *This condition still applies. 30. The applicant shall increase landscape plantings along the east property line to minimum bufferyard requirements. *This condition has been met. 31. No trees shall be removed behind the northwestern comer of the silt fence as shown on grading plans dated 05/19/06. *This condition still applies. 32. A total of 139 trees shall be planted in the development as required for canopy coverage. *This condition still applies. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 12 33. All existing buildings, driveways and accessory structures must be removed before grading commences. *This condition shall be modified as follows: The five apartment buildings, bituminous driveways, gravel path and playground on the site must be removed before building permits will be issued, with the exception of the model permits. 34. The lowest floor elevation of 106 Lakeview Road East must be field verified. *This condition does not apply. 35. The high water level of the proposed pond must be minimum three feet lower than the lowest floor elevation of the adjacent homes along Lakeview Road East. *This condition does not apply. 36. The high water level of the wetland must be determined. *This condition shall be modified as follows: The overflow elevation of the wetland must be at least one foot below the lowest opening of any adjacent building. 37. The proposed grading in the northwest comer near the wetland needs to be adjusted so that the floor elevation of the homes within Lot 13, Block 2 comply with city standards. *This condition does not apply. 38. Pavement grades at the following locations must be adjusted so that the grade does not exceed 7%: West of Building A, and the northern street extending from the Lakeview Road East intersection. *This condition has been met. 39. Private driveway grades shall not exceed 10%. *This condition shall be modified as follows: Pavement grades within the development shall not exceed 10%. 40. Ground (ie. non-paved) surface grades shall not be less than 2%. *This condition shall be modified as follows: Ground (i.e. non-paved) surface grades shall not be less than 2% and shall not exceed 3H: 1 V. 41. Emergency overflow locations and elevations must be shown on the plan. *This condition has been met. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 13 42. High point elevations between the catch basins must be shown along the east side of Block 2. *This condition still applies. 43. Each lot must be provided with separate sewer and water services. *This condition has been met. 44. An easement is required from the appropriate property owner for any off-site grading. The developer must receive approval from the City of Eden Prairie for grading in to the Outlot for Bearpath 3rd Addition. *The City of Eden Prairie will not permit any grading on their property. The developer has, therefore, incorporated retaining walls along the easterly property line. This condition shall be modified as follows: An easement is required from the appropriate property owner for any off-site grading. 45. If importing or exporting material for development of the site is necessary, the applicant will be required to supply the City with detailed haul routes. *This condition still applies. 46. Building permits are required for all retaining walls four feet tall or higher and must be designed by a Structural Engineer registered in the State of Minnesota. *This condition still applies. 47. All sanitary sewer, watermain and storm sewer within this site shall be privately owned and maintained. *This condition still applies. 48. The watermain extension from Lyman Boulevard must be wet-tapped and must be done under traffic. *This condition is duplicated in the next condition and may be deleted. 49. The developer must provide ingress/egress to the North Bay residents for the duration of the utility extension within Lake Riley Road East. *This condition still applies. 50. Each new lot is subject to the sanitary sewer and water hookup charges. The 2006 trunk hookup charge is $1,575 for sanitary sewer and $4,078 for watermain. Sanitary sewer and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. All of these charges are based on the number of SAC units assigned by the Met Council and are due at the time of building permit issuance. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23, 2006 Page 14 *This condition still applies. 51. The 15-foot wide sanitary sewer easement on the northwest side of the property must be vacated. *This condition still applies. 52. The proposed pool house must not lie within the drainage and utility easement. *This condition has been met. 53. The payment of full park dedication fees at the rate in force upon final plat approval in lieu of parkland dedication. *This condition can be modified as follows: The developer shall pay $61,800.00 park dedication fees for the first phase of the development prior to final plat recording in lieu of parkland dedication. 54. The applicant shall provide all design, engineering, construction and testing services required of the "Lyman Boulevard Trail." All construction documents shall be delivered to the Park and Recreation Director and City Engineer for approval prior to the initiation of each phase of construction. The trail shall be 10 feet in width, surfaced with bituminous material, and constructed to meet all city specifications. The applicant shall be reimbursed for the actual cost of construction materials for the Lyman Boulevard Trail. This reimbursement payment shall be made upon completion and acceptance of the trail and receipt of an invoice documenting the actual costs for the construction materials utilized in its construction. *This condition still applies. 55. The trail connection at the northeast comer of the site connecting the Lakeside area to the future Highway 212 trail and underpass, as depicted in the applicant's plans, is completed. *This condition shall be modified as follows: The trail connection at the northeast comer of the site connecting the Lakeside area to the future Highway 212 trail and underpass, as depicted in the applicant's plans, shall be installed with the first phase of the development. Based on the review of the subdivision construction plans, staff recommends that the following conditions be added: 1. The developer shall provide additional details regarding Pond 2 including the intended purpose of the pond and elevation of the proposed flared end section. 2. Install pedestrian ramps at all curbs and street crossings of trails and sidewalks. 3. Model permits will be issued for Lots 3 and 4, Block 1 and Lots 1 through 3, Block 2. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 15 4. The invert elevation of CB 217 must be 895.6 feet or lower. 5. A draintile stub to serve the future lot to the north must be installed at CB 217 with this phase. 6. The lowest floor elevation of all buildings must be noted on the grading plan. 7. Include the missing 884-foot contour north of Pond 2. 8. Delete the extra 884-foot contour west of Lots 1 through 3, Block 2. 9. The grading plan must be revised to reflect the new driveway orientation to the underground parking within Building A. 10. A drainage and utility easement is required over the wetland. The easement shall encompass the wetland, wetland buffer and high water level of the wetland. 11. Building permits are required for all retaining walls four feet tall or higher and must be designed by a Structural Engineer registered in the State of Minnesota. 12. All retaining walls within a drainage and utility easement require an encroachment agreement. 13. Any road closure of Lyman Boulevard due to utility extension must be coordinated through the Engineering Department at least 10 days prior to the requested closure. 14. The developer's contractor must contact Gordy Stauff, City of Chanhassen Construction Manager, at least 48 hours in advance of connecting to any public utility. 15. Each new lot is subject to the sanitary sewer and water hookup charges. The 2006 trunk hookup charge is $1,575 for sanitary sewer and $4,078 for watermain. Sanitary sewer and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. All of these charges are based on the number of SAC units assigned by the Met Council and are due at the time of building permit issuance. 16. Staff suggests that the storm sewer west of the retaining wall along the back of the lots within Block 1 be shifted to the west so that any excavation of this storm pipe will not undermine. 17. The 100-scale utility plan cover sheet must show all proposed utilities the retaining walles). 18. All ofthe utility improvements are required to be constructed in accordance with the City's latest edition of Standard Specifications and Detail Plates. 19. A preconstruction meeting is required before building permit issuance. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 16 20. The developer must have the base course of asphalt in at the following locations by November 15, 2006: north end of Lot 3, Block 2 to Lake Riley Road East, and north of Lot 4, Block 1 to Lyman Boulevard. 21. The developer shall pay the $6,893.39 Arterial Collector Fee with the final plat. 22. The developer shall dedicate public access easements over the sidewalks along Lake Riley Road East and Riley Lake Drive and the trail connection in the northeast comer of the development, which connect Lyman Boulevard to the Highway 312 underpass and trail in Eden Prairie. SUBDIVISION VARIANCE FINDINGS The city may grant a variance from the regulations of the subdivision ordinance as part of the plat approval process following a finding that all of the following conditions exist: 1) The hardship is not a mere inconvenience. Finding: The hardship is not a mere inconvenience. The wetland is perched, meaning that it is hydraulically isolated and located on a higher outcropping than surrounding land. It would be unfeasible to bring the entire site above the wetland. 2) The hardship is caused by the particular physical surroundings, shape and topographical conditions of the land. Finding: The hardship is caused by the particular physical surroundings, shape and topographical conditions of the land. The wetland is perched, meaning that it is hydraulically isolated and located on a higher outcropping than surrounding land. 3) The conditions upon which the request is based are unique and not generally applicable to other property. Finding: The conditions upon which the request is based are unique to this site and not generally applicable to other properties. The wetland is perched, meaning that it is hydraulically isolated and located on a higher outcropping than surrounding land. It would be unfeasible to bring the entire site above the wetland. 4) The granting of the variance will not be substantially detrimental to the public welfare and is in accord with the purpose and intent of this chapter, the zoning ordinance and comprehensive plan. Finding: The granting of a variance will not be substantially detrimental to the public welfare and is in accord with the purpose and intent of the subdivision chapter, the zoning ordinance, and comprehensive plan. The applicant will provide a minimum one foot separation above the emergency overflow of the wetland.. The applicant's request is reasonable. Staff is recommending approval of this request. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 17 RECOMMENDATION Staff recommends that the City Council adopt the following motion: "The Chanhassen City Council approves the Final Plat for Lakeside creating 18 lots, 10 outlots and right-of-way for public streets (plans prepared by Pioneer Engineering, dated 10/02/06) with a variance from Section 18-40 (4) d of the Chanhassen City Code subject to the following conditions: 1. A minimum buffer of 16.5 to 20 feet shall be preserved around the perimeter of the wetland. All structures (including parking lots) shall maintain a 40-foot setback from the wetland buffer. All trails and retaining walls shall be modified to remain outside the wetland buffer. The plans shall be revised to reflect the required wetland buffer and wetland buffer setback. Wetland buffer areas shall be preserved, surveyed and staked in accordance with the City's wetland ordinance. The applicant shall install wetland buffer edge signs before construction begins and shall pay the City $20 per sign. 2. All structures shall be located a minimum of 75 feet from the ordinary high water, OHW (865.3), of Lake Riley. The proposed fire pit shall be located a minimum of 75 feet from the OHW and shall be buffered from the lake by vegetation. No grading or intensive clearing of vegetation shall occur within the shore impact zone (all areas within 37.5 feet ofthe OHW). 3. All existing amenities and/or structures (including any docks, existing beach that is not proposed to remain and the boat launch) on Outlot I, Lakeside, shall be removed. A boat launch is not permitted. 4. The applicant shall supply details about the water feature between the rear yards of the units proposed for Outlots F and H, specifically the source for the water in the water feature. As an alternative to the current proposal, the applicant should consider revising the plans to utilize storm water as an amenity as part of a rain garden system in this area. 5. All storm water infrastructure, including catch basins, storm sewer pipes, manholes, flared- end sections, outlet structures, ponds and swales, shall be owned, operated and maintained by the developer and, eventually, the homeowners association. Prior to final plat recording, the developer shall enter into an agreement with the City that outlines the parameters of operation, inspection and maintenance of the storm water infrastructure. This agreement shall be transferred to the homeowners association prior to the developer relinquishing responsibility for the development. 6. The SWPPP should be revised to include the grading plan, erosion and sediment control plan. 7. The plans shall be revised to show that erosion control blanket will be installed over all areas with 3:1 slopes or steeper. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23, 2006 Page 18 8. A stable emergency overflow (EOF) for the pond shall be provided. The EOF could consist of riprap and geotextile fabric or a turf re-enforcement mat (a permanent erosion control blanket). A typical detail shall be included in the plan. 9. Energy dissipation shall be provided for all inlets and outlets within 24 hours of installation 10. Wimco-type or other comparable inlet controls shall be used and installed within 24 hours of installation of the inlets. Perimeter controls and inlet protection shall be in place and maintained as needed until 70% of the vegetation is established. 11. Typical building lot controls shall be shown on the plan in a typical detail. These controls shall include perimeter controls (silt fence), rock driveways, street sweeping, inlet control and temporary mulch after final grade and prior to issuing the Certificate of Occupancy (CO). 12. Silt fence shall be placed at the proposed high water level elevation of the proposed storm water pond. 13. Street gutters and catch basins are considered "surface waters" and shall be protected from exposed soils with a positive slope within 200 linear feet. Following installation of curb and gutter, silt fence shall be installed curbside along all positive slopes to the street with exposed soils. 14. Plans shall be revised to show erosion and sediment control measures for the road ditch along Lyman Boulevard. All perimeter controls shall be inspected by the city and the SWCD prior to grading. 15. Details for concrete washout areas where drivers will wash out their trucks and how the water will be treated should be developed and included in the SWPPP. 16. Street cleaning of soil tracked onto public streets shall include daily street scraping and street sweeping as needed. 17. The SWMP fee for Lakeside - Phase I (including Lots 1-5, Block 1; Lots 1-12, Block 2; Lot 1, Block 3; and Outlots A, I and J, with credits assigned accordingly) is $47,333.00. 18. The owner/operator of the proposed development shall apply for and obtain permits from the appropriate regulatory agencies (e.g., Riley-Purgatory-Bluff Creek Watershed District, Minnesota Pollution Control Agency (NPDES Phase II Construction Site Permit), Minnesota Department of Natural Resources (for dewatering), Minnesota Department of Transportation, Minnesota Department of Health) and comply with their conditions of approval. 19. Tree protection fencing shall be installed prior to construction around all areas designated for preservation and/or at the edge of proposed grading limits. 20. A walk-through inspection of the silt/tree preservation fence shall be required prior to construction. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23,2006 Page 19 21. No burning permits shall be issued for tree removal. All trees removed on site shall be chipped and used on site or hauled off. 22. No trees shall be removed behind the northwestern comer of the silt fence as shown on grading plans dated 05/19/06. 23. A total of 139 trees shall be planted in the development as required for canopy coverage. 24. The five apartment buildings, bituminous driveways, gravel path and playground on the site must be removed before building permits will be' issued, with the exception of the model permits. 25. The overflow elevation of the wetland must be at least one foot below the lowest opening of any adjacent building. 26. Pavement grades within the development shall not exceed 10%. 27. Ground (i.e. non-paved) surface grades shall not be less than 2% and shall not exceed 3H:IV. 28. High point elevations between the catch basins must be shown along the east side of Block 2. 29. An easement is required from the appropriate property owner for any off-site grading. 30. If importing or exporting material for development of the site is necessary, the applicant will be required to supply the City with detailed haul routes. 31. Building permits are required for all retaining walls four feet tall or higher and must be designed by a Structural Engineer registered in the State of Minnesota. 32. All sanitary sewer, watermain and storm sewer within this site shall be privately owned and maintained. 33. The developer must provide ingress/egress to the North Bay residents for the duration of the utility extension within Lake Riley Road East. 34. Each new lot is subject to the sanitary sewer and water hookup charges. The 2006 trunk hookup charge is $1,575 for sanitary sewer and $4,078 for watermain. Sanitary sewer and watermain hookup fees may be specially assessed against the parcel at the time of building permit issuance. All of these charges are based on the number of SAC units assigned by the Met Council and are due at the time of building permit issuance. 35. The 15-foot wide sanitary sewer easement on the northwest side of the property must be vacated. 36. The developer shall pay $61,800.00 park dedication fees for the first phase of the development prior to final plat recording in lieu of parkland dedication. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23, 2006 Page 20 37. The applicant shall provide all design, engineering, construction and testing services required of the "Lyman Boulevard Trail." All construction documents shall be delivered to the Park and Recreation Director and City Engineer for approval prior to the initiation of each phase of construction. The trail shall be 10 feet in width, surfaced with bituminous material, and constructed to meet all city specifications. The applicant shall be reimbursed for the actual cost of construction materials for the Lyman Boulevard Trail. This reimbursement payment shall be made upon completion and acceptance of the trail and receipt of an invoice documenting the actual costs for the construction materials utilized in its construction. 38. The trail connection at the northeast comer of the site connecting the Lakeside area to the future Highway 212 trail and underpass, as depicted in the applicant's plans, shall be installed with the first phase of the development. 39. The developer shall provide additional details regarding Pond 2 including the intended purpose of the pond and elevation of the proposed flared end section. 40. Install pedestrian ramps at all curbs and street crossings of trails and sidewalks. 41. Model permits will be issued for Lots 3 and 4, Block 1 and Lots 1 through 3, Block 2. 42. The invert elevation of CB 217 must be 895.6 feet or lower. 43. A draintile stub to serve the future lot to the north must be installed at CB 217 with this phase. 44. The lowest floor elevation of all buildings must be noted on the grading plan. 45. Include the missing 884-foot contour north of Pond 2. 46. Delete the extra 884-foot contour west of Lots 1 through 3, Block 2. 47. The grading plan must be revised to reflect the new driveway orientation to the underground parking within Building A. 48. A drainage and utility easement is required over the wetland. The easement shall encompass the wetland, wetland buffer and high water level of the wetland. 49. Building permits are required for all retaining walls four feet tall or higher and must be designed by a Structural Engineer registered in the State of Minnesota. 50. All retaining walls within a drainage and utility easement require an encroachment agreement. 51. Any road closure of Lyman Boulevard due to utility extension must be coordinated through the Engineering Department at least 10 days prior to the requested closure. Todd Gerhardt Lakeside Final Plat- Planning Case 06-26 October 23, 2006 Page 21 52. The developer's contractor must contact the City of Chanhassen Construction Manager at least 48 hours in advance of connecting to any public utility. 53. Staff suggests that the storm sewer west of the retaining wall along the back of the lots within Block 1 be shifted to the west so that any excavation of this storm pipe will not undermine. 54. The 100-scale utility plan cover sheet must show all proposed utilities the retaining walles). 55. All of the utility improvements are required to be constructed in accordance with the City's latest edition of Standard Specifications and Detail Plates. 56. A preconstruction meeting is required before building permit issuance. 57. The developer must have the base course of asphalt in at the following locations by November 15, 2006: north end of Lot 3, Block 2 to Lake Riley Road East, and north of Lot 4, Block 1 to Lyman Boulevard. 58. The developer shall pay the $6,893.39 Arterial Collector Fee with the final plat. 59. The developer shall dedicate public access easements over the sidewalks along Lake Riley Road East and Riley Lake Drive and the trail connection in the northeast comer of the development, which connect Lyman Boulevard to the Highway 312 underpass and trail in Eden Prairie. " ATTACHMENTS 1. Final plat. 2. Development Design Standards 3. Retaining Wall Exhibit g:\plan\2006 planning cases\06-26 lakeside\final plat\Jakeside fp memo. doc n frm m~ J~ 2.ifs~ . 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"f " ~i fi~ ~% .. ~i !~ ,.0 ~~ 00 -'I ,'" !:ii' f;;: ef ;. oS ~i ,,- fa '. ~. ~ ... <:l <- f"\ I '0 : its I a,r,.E) I ~~~ J ij~ ~~ ;! !~I ~:g ~~ I I I I I I I ~"" .~. ~~E ',,1 ~J~ e)' 4:<'71 Oli:\/ ft-ooeJO.(llJ......f bo02'$"SJ"' 'l. o ""'l ~ ... ::q ~~ g~ ~ .\~ gel ;; ~ ... .. ~. !Hr ii~ 'tiPf Fit ~~~ !~~ m ',1 i~; ~S'z ~f~ ~~f ~~~::- st ..- o.!- ~m! "'; 1"1:j I.......... '. iZ Etr:1 ;tr:1 l?:l I'" :~. I;;: i~. !~ ~. ~: . = g~ . ,- [i:~i~ z.~!:-~ Cl"l:LO:J~ ~~~! gS;i~ ~!'J;-'l:r . ;;~~ ~~j ~~:i Ci"g!.a ;;i~ '5"==:J_ ag-~~ l~ 8J:;:f~~ ~:i~f 1;!i!2.~~ graMS! l'-ll.ln ;~f;' ~~~i :h.~ Z!-s:r' siras: ;~!i ff5: :r: -i ~i : ~ i~J ~'0 ~~ !; : z~~ f~ : ~ > ~ :~ : S"~~ t'i: I ~!2o !Ii : ~o3 g", I ~c ~! ;--'o:r!~ ~i : 5i 'C: I ~. ~ ~ o "., -0 ~f 3- ~~ ... .~ ~ f; .~ ~g ~~ 5:!i 81 '" '" > "0 :c n en (') > f;j Adopted July 24, 2006 DEVELOPMENT DESIGN STANDARDS Lakeside Development Standards a. Intent The purpose of this zone is to create a PUD for a mix housing type multi-family development. The use of the PUD zone is to allow for more flexible design standards while creating a higher quality and more sensitive proposal. The PUD requires that the development demonstrate a higher quality of architectural standards and site design. Ancillary uses may be permitted as listed below once a primary use has occupied the site. b. Permitted Uses The permitted uses in this zone shall be twin homes, townhouses, and three condominium buildings and their ancillary uses. If there is a question as to whether or not a use meets the definition, the Planning Director shall make that interpretation. The type of uses to be provided on common areas shall be low-intensity neighborhood-oriented accessory structures to meet daily needs of residents. Such uses may include a bus shelter, community building, development signage, fountain, garden, gazebo, maintenance shed, picnic shelter, pool, playground equipment or tennis courts. c. Setbacks The PUD ordinance requires setbacks from roadways and exterior property lines. The following table displays those setbacks. Setback Standards Highway 212 50 feet East(Perimeter) Lot Line 50 feet -townhouses/twin homes; Building Height - Condominiums with a minimum of 30 feet Lyman Boulevard 50 feet/30 feet for beach lot West(Perimeter) Lot Line 50 feet Twin Home separation between buildings 15 feet Townhouse separation between buildings 20 feet Minimum Driveway length (to back of curb, trail or sidewalk) 25 feet Hard Surface Coverage 50% * Wetland: Buffer and buffer setback 16.5 feet and 40 feet Lake Riley 75 feet # Decks, patios, porches, and stoops may project up to seven (7) feet in to the required yard. I l __ I * The entire development, including the public and private streets and Outlots, may not exceed 50 percent hard coverage. Individual lots will exceed the 50 percent site coverage. d. Building Materials and Design 1. Townhouses . Building height shall be limited to 35 feet. . Building exterior material shall be a combination of fiber-cement or vinyl siding or shake and brick or stone. . No two adjacent structures shall be of the same color scheme. . Colors used shall be varied across color tones. . All units shall utilize minimum timberline 30-year asphalt shingles. . Each unit shall have a minimum of one overstory tree within its front landscape yard. . All mechanical equipment shall be screened with material compatible to the building, landscaping or decorative fencing. . Garage doors shall be decorative and have windows. 2. Community Clubhouse . Building height shall be limited to 35 feet. · Building exterior material shall be a combination of stone and stucco and fiber-cement. . Natural cedar shakes roofing. Condominium Building . Building height shall be limited to 48 feet. · Building exterior material shall be a combination of 80 percent or greater stone and brick. Accent and trim areas in fiber-cement lap siding and shake. . Roofing shall be a minimum timberline 30-year asphalt shingles (pitched roofs). e. Signage Signage shall comply with city standards for Residential Districts. f. Landscaping Landscaping shall comply with the landscaping plan prepared by Pioneer Engineering, dated May 19, 2006, revised June 7,2006. 2 Retaining Wall Exhibit