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HomeMy WebLinkAboutResolution - 2011-82 - United Health Group – Preliminary Plat - 09/20/2011 CITY OF EDEN PRAIRIE HENNEPIN COUNTY, MINNESOTA RESOLUTION NO. 2011-82 RESOLUTION APPROVING THE PRELIMINARY PLAT OF UNITED HEALTH GROUP FOR UNITED HEALTH GROUP BE IT RESOLVED,by the Eden Prairie City Council as follows: That the preliminary plat of United Health Group for United Health Group stamp dated September 20, 2011, and consisting of 68 acres into two lots,ten Outlots and right of way dedication, a copy of which is on file at the City Hall, is found to be in conformance with the provisions of the Eden Prairie Zoning and Platting ordinances, and amendments thereto, and is herein approved with the waivers identified in Attachment B and subject to the conditions identified in Attachments A and C attached hereto and made a part hereof. ADOPTED by the Eden Prairie City Council on the 20th day of September, 2011. ancy a-L ns,lfa ATTEST: 14 leen Porta, City Clerk Attachment A — Conditions of Approval (Wetlands & NVater Quality) September 15, 2011 The following is a summary of incomplete items based on review of plans prepared by Westwood Professional Services, dated received September 12, 2011. Prior to Second Reading, the Proponent Shall: ■ Provide a Final Wetland Replacement Application and Plan that has been approved by the Nine Mile Creek Watershed District. This would include an Avoidance and Minimization Plan and Technical Evaluation Panel (TEP) review for the proposed increase in wetland fill. The Plan must meet Watershed District standards. Written confirmation from the Watershed District that they have approved the amount of wetland fill proposed for the site is required. • Provide geotechnical and groundwater mounding analyses that confirm that the wetlands and proposed wetland replacement areas are sustainable and will not be drained or adversely impacted by the construction activities. • Provide a water budget analysis that confirms that the wetlands and proposed wetland replacement areas will not be adversely affected by the construction and proposed stormwater management system. The analysis should compare existing and proposed conditions for dry, average and wet years. • Revise the plans to incorporate natural retention and infiltration of precipitation on-site and attenuate flow by the use of options such as re-use of stormwater through irrigation; incorporation of open vegetated swales or natural depressions; green roofs; or green wall systems. All stormwater structures, including pipe galleries and pipes, should be placed outside of the building footprints to the fullest extent possible. Irrigation used to meet the on- site retention must consider the type of soils onsite, be sized to allow for natural infiltration onsite and should be timed to allow irrigation to occur in accordance with City Code requirements. The Stormwater Management Plan must be provided to the Watershed District for review and approval. • Provide access plans for the infiltration systems proposed under the parking decks for maintenance and/or emergency repairs. • Provide detailed plans for the protection walls based on the findings and conclusions of the hydrologic analysis and modeling to ensure construction would not result in inadvertent drainage or impacts to the wetlands and proposed wetland replacement areas. Prior to Final Plat issuance the proponent shall: ■ Provide a Wetland Plan and Wetland Surety in an amount equal to 150% of the cost of the Wetland Plan. The Wetland Plan must include: — Long-term monitoring plan for wetland and wetland mitigation hydrology after completion of all phases of construction. The monitoring plan must be approved by the Watershed District, but the City would recommend a minimum of 5 years after completion of all development phases. — Functional analysis of pre- and post-construction conditions for on-site mitigation and existing wetlands to determine whether the wetland functions will be maintained at equal or greater levels than those proposed. Steps that will be taken to maintain or improve the proposed or existing functions and values must be included in the Wetland Plan. • Provide a copy of the Wetland Permit received from the Watershed District, • Provide conservation easements over all wetlands, wetland replacement areas, and wetland buffers and a Declaration of Covenants and Restrictions over all wetland mitigation areas. • Provide a Stormwater Retention and Infiltration Plan that meets Watershed District Standards. • Provide a minimum of two (2) feet between the High Water Level (HWL) for all infiltration BMPs, stormwater ponds and wetlands and the lowest floor elevation of all structures. This would include the pipe galleries under the parking decks. • Provide for water level fluctuations of no more than five (5) inches to the Normal Water Elevation (NWL) and/or Ordinary High Water Level (OHWL) • Check the accuracy of the modeling performed for the project. Prior to Land Alteration permit issuance the proponent shall: • Provide a signed and approved copy of the land alteration / grading permit issued by the Watershed District. • Provide a maintenance agreement for all areas receiving public stormwater drainage that are located under private structures such as the parking decks. • Install erosion control at the grading limits of the property for review and approval by the City and Watershed District. Attachment B— UHG Planned Unit Develop men t(PUD) Waivers September 15, 2d11 • Building setback from 35 feet to 30 feet. Minimum front yard setback of 35 feet required; Parking Ramp A front yard setback 34 feet from proposed Shady Oak Road right-of-way line at southwest corner of ramp. Justification: The front yard setback for Ramp A adjacent to Shady Oak Road is variable along the Shady Oak Road Street frontage with a 50-foot setback at the mid-point and an 80-foot setback at the northwest comer. The average setback is in excess of the minimum for this street frontage. • Building height from 30 feet to 139 feet (bldg 1), 148 feet(bldg 2), 243 feet(bldg 3), and 178 feet(bldg 4). Justification: The proposed maximum height for these structures is proportional to the available site area and planned distances from perimeter site boundaries. Additional building height in this location is offset by adjacent natural features and contributes to the preservation of sensitive natural systems by reducing the disturbance area and development footprint on the subject property. ■ Parking deck height from 15 feet to 72 (deck A), 64 (deck B), and 82 (deck Q feet. Justification: The proposed maximum height for these structures is proportional to the available site area and planned distances from perimeter site boundaries. Additional building height in this location is offset by adjacent natural features and contributes to the preservation of sensitive natural systems by reducing the disturbance area and development footprint on the subject property. ■ Floor Area Ratio from .50 to.64 Justification: The increased density on Lot 1 allows for the creation of an open space preservation area that preserves a significant landform and tree resource. The overall proposed floor area ratio including the preservation land conforms to the maximum allowable floor area. • Minimum parking dimension from 9' x 19' to 8.5' x 18', and drive aisle from 25 feet to 24 feet. Justification: Reduced parking stall and aisle dimensions contribute to efficiency in the proposed parking ramps that translates to reduced site coverage. Ramp parking for this project represents low-turnover parking that can be safely utilized given the low frequency of users entering and exiting the facilities during the times it is in use. The proposed parking dimensions requested with this waiver are consistent with other parking ramp designs for low-turnover parking in Eden Prairie. • Landscaping requirements caliper inch from 4,537 to 3,667. Justification: Insufficient suitable site area is available for the planting of a sufficient quantity of trees to meet the minimum requirement. The unmet landscaping requirements can be used for enhancements related to light rail including trails, plazas, architecture, and landscaping. ■ Signs A) From one freestanding sign per street frontage to two on West 62 Street. B) Freestanding sign size from 50 square feet to 104 square feet. C) Sign height from 8 to 10.5 feet. D) Wall sign size from 50 to 200 square feet. Justification: The proposed freestanding signage is based on consolidation and transfer of freestanding signage area that would be allowed per street frontage. The project site includes street frontage for Shady Oak Road, for City West Parkway, for West 62"d Street, for Highway 62,and for Highway 212; a total of five street frontages. Based on five frontages the ordinance would allow one 50 square-foot sign and four 36 square-foot signs; a total of 194 square feet of free-standing sign area. The PUD sign proposal would not exceed the 194 square-foot limit determined under the ordinance provisions Additional sign height is warranted for the area identification sign to be able to maintain workable sign proportions and to compensate for slope conditions along Shady Oak Road. The ordinance allows 50 square feet of wall signage per street frontage; for this project with streets surrounding the project area up to four signs totaling 200 square feet would be allowed for each building. • Wetland Buffer Setbacks A) A reduction to no (0) feet between Wetland 1-22-D and the structure setback for Parking Ramp B. B) A reduction to 17 feet between the structure setback for Building 2 and Wetland 1-22-A. C) A reduction to 17 feet for two points between the structure setback for Building 3 and Wetland 1-22-A. D) A reduction to 17 feet between the structure setback for the northwest corner of Building 4 and Wetland 1-22-A. E) A reduction to no(0) feet between the northeast corner of Wetland 1-22-A and West 62"d Street. F) A reduction to no(0) feet between the Wetland 1-21-A and West 62"d Street. G) A reduction to no(0) feet between Wetland 1-22-C and the retaining wall along West 62"d Street. Justification: The wetlands were all classified as moderate quality and as such require a minimum wetland buffer of 20 feet with an average wetland buffer of 40 feet. This corresponds with Nine Mile Creek Watershed District standards. The average wetland buffer requirement is met for all wetlands, however site constraints and the requirement that wetland cannot be filled to create wetland buffer result in areas with less than the minimum. Waivers from the 20-foot minimum wetland buffers would also be required from the Watershed District. • Wetland Structure Setbacks from the required we#land buffer strip Structure setback impacts of more than 10%of the surface area and structure setback reduced from 15 feet as follows: A) A reduction to 5 feet in addition to no (0)wetland buffer strip for Parking Ramp B along the north half of Wetland -1-22-D B) A reduction to 10 feet in addition to a 20-foot minimum wetland buffer strip for the Parking Ramp C along the east side of Wetland 1-21-C and the north side of Wetland 1-21-B. C) A reduction to 5 feet in addition to a 17-foot minimum wetland buffer strip for the northeast corner of the ground floor level of Building 2 at points adjoining Wetland 1-22-A. D) A reduction to 10 feet in addition to a 20-foot minimum wetland buffer strip for the north side of the ground floor level of Building 2 at points adjoining Wetland 1-22-C. E) A reduction to 5 feet in addition to a 17-foot minimum wetland buffer strip for the ground floor level of Building 3 at points adjoining Wetland 1-22-A. F) A reduction to 6 feet in addition to a 20-foot minimum wetland buffer strip for the southeast corner of the ground floor level of Building 3 at points adjoining Wetland 1-22-B. G) A reduction to 5 feet in addition to a 17-foot minimum wetland buffer strip for the northwest corner of the ground floor level of Building 4 at points adjoining Wetland I-22-A. H) A reduction to 10 feet in addition to a 20 foot minimum wetland buffer strip for the west side of the ground floor level of Building 4 and Wetland 1-22-A. I) A reduction to 10 feet in addition to a 20 foot minimum wetland buffer strip for the south side of the ground floor level of Building 4 and Wetland 1-21-C. J) A reduction to 10 feet for the courtyard for Building 4 and Wetland 1-21-A. K) A reduction to no structure setback in addition to a 20-foot minimum wetland buffer strip for retaining walls adjacent to Wetlands -1-22-C and -1-22-E. L) A reduction to 10 feet in addition to a 20-foot minimum wetland buffer strip between Wetland 1-22-A and the paved trail that runs between Pond 1-22-K and Wetland 1-22-A. M) A reduction to 10 feet in addition to a 20-foot minimum wetland buffer strip for paved trails adjoining Wetland 1-21-H. N) A reduction to no(0) feet between West 6fd Street and the wetland buffers for Wetlands 1-22-C, 1-22-A and 1-21-A. Justification; The requests for reduced structure setbacks allow adequate access for mowing or building maintenance with minimal impact on the ability of the wetland buffer strips to provide sufficient area for protecting wetlands from pollutants and for providing for wildlife corridors near wetlands. The plans provide the required average wetland buffer strip of 40 feet for all wetlands which will help maintain the integrity of the wetlands and ecological corridors. Attachment C—United Health Group Site Required Transportation Improvements September 15, 2011 With the development of the Property Developer will be responsible for the costs of the infrastructure improvements identified below. The costs of the Improvements shall include:, in addition to actual construction costs, administrative, interest and engineering costs and fees incurred or paid by the City in relationship to construction of the Improvements and costs incurred for acquisition of easements and or right-of-way including attorney fees. The Improvements include but are not limited to the following 1. 100% of the project costs for West 62nd Street, City West Parkway, and the northern segment of Shady Oak Road (CR 61). These improvements are required to be constructed concurrent with the first phase of development on the property. The improvements include but are not limited to the following: a. Full reconstruction of Shady Oak Road including pedestrian and bicycle accommodations from south of the City West Parkway North Intersecction to north of the Highway 62 North Ramp Intersection. b. Widening and reconstruction of Shady Oak Road under Highway 62 to provide a second left turn (dual left) on the south approach of the Highway 62 North Ramp intersection and right turn lanes on the north and south approaches of the Highway 62 South Ramp Intersections. c. Reconstruction of the Shady Oak Road 1 West 62' Street intersection to provide a second left turn lane (dual lefts) on the north approach, a third through lane and a right turn lane on the south approach, and four approach lanes on both the east and west approaches of the intersection. d, Reconstruction of the City West Parkway North Intersection to provide left and right turn lanes on the north and south approaches and four approach lanes on the east approach to the intersection. e. Reconstruction of West 62' Street including pedestrian and bicycle acconunodations from Shady Oak Road to east of the access point to Building 4, including the termination of West 62' Street as a roundabout and the removal of any unused portion of existing West 62nd Street. f. Reconstruction of City West Parkway including pedestrian and bicycle accommodations to the east of Shady Oak Road to provide a roundabout at the intersection of City West Parkway and the new north-south on-site roadway, g. If a High Occupancy Vehicle (HOV) Bypass or Slip Ramp for the Shady Oak Road South Ramp to eastbound Highway 62 is included in the project the Developer will be responsible for 113 of the costs of the Bypass or Slip Ramp. 2. 100% of the project costs for the City West Parkway South Intersection. The improvement includes but is not limited to reconstructing the intersection to provide left and right turn lanes on the east and west approaches, a second left turn (dual left) on the north approach of the intersection and pedestrian and bicycle accommodations. 3. 23% of the project costs for Shady Oak Road (CR 61) between the limits of the two projects identified above. The improvement includes the full reconstruction of Shady Dais Road to a 4-1ane divided roadway with turn lanes and pedestrian and bicycle accommodations. 4. I4% of the project costs for the Highway 2121 Shady Oak Road (CR 61) interchange improvement. The improvement includes the full reconstruction of the interchange including the construction of an 8-lane bridge with pedestrian and bicycle accommodations. For the purposes of cost participation the associated improvements at the City West Parkway South Intersection (improvement #2 above) and the Flying Cloud Drive Intersection will be considered separate projects.