Agenda - Planning Commission - 10/04/2012

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Northgate Performing Arts Center: Site Plan Review September 28, 2012 Page 5 of 7 Irrigation: All new landscaping shall be irrigated by an in -ground system. Irrigation metering and backflow devices shall be approved as part of the Utility Plan, and installed accordingly. Irrigation rain sensors shall be installed and appropriately placed throughout the site. Tree Preservation: This site is devoid of any significant tree cover and therefore, no tree preservation plan is necessary. Grading and Drainage: The following comments are offered regarding the September 4, 2012 Grading and Utility Plans prepared by Civil Engineering Site Design: • The B612 concrete curb detail should be amended to include base material extending to 1' beyond the back of curb. The pedestrian ramp details have recently been modified at the state level. The plans must be revised to include the most recent MN/DOT approved details and design. • Spot elevations must be called out as gutter or top of curb. • The developer will be responsible for replacing any sidewalk or streetscape along Sunwood Drive that is damaged by construction of the building. • A pedestrian detour plan must be submitted showing the pedestrian route along Sunwood Drive during construction of the building. The project will require a permit from the Lower Rum River Water Management Organization (LRRWMO). Please copy the City on the submittal. The application deadline is the first Thursday of the month for the meeting on the third Thursday of the month. The LRRWMO requirements include infiltration of 1 inch of runoff from the site. Infiltration practices must be incorporated into the plans to meet this requirement. Please submit calculations routing the site runoff to the infiltration basin for the 1" 10 year and 100 year storms. The following notes should be added or amended on the plan set: • The contractor should have a sweeper on site or available within 3 hours. All material tracked onto City streets must be removed immediately upon discovery, or as directed by the City Engineer. • Installation of silt fence and other down gradient sediment protection measures shall be completed and inspected prior to commencement of any site activities. Access and Streets: The site will derive public access from a shared driveway with the Allina site to the east from Sunwood Drive. An existing access easement is recorded on the site. Sidewalks: An additional two (2) to four (4) foot section of sidewalk must be added (at the Applicant's cost) along Peridot Street NW, in accordance with the COR Design Framework streetscape plans. Construction of this sidewalk section may require additional sidewalk easement if constructed on private property. Traffic Generation: As part of the original Town Center AUAR, a detailed traffic analysis was completed that anticipated the type and size of development shown on the plat. The proposed development is consistent with the traffic modeling system used as part of the AUAR analysis.