Agenda - Planning Commission - 07/07/2011

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Review File: Stoney River Sketch Plan and Site Plan Review June 30, 2011 Page 8 of 10 • There is a considerable amount of runoff directed down the access road to a limited number of catch basins. It may be difficult for these catch basins to capture all the water with the limited inlet capacity, thereby creating ponding scenarios at the low points and triggering the overland overflows out into the right-of-way. • Please submit the manufacturer's information related to the Ultra -Flo vault system; including but not limited to material, installation details, recommended maintenance, inspection manholes/clean-outs, and life expectancy. The detail sheet must include the current City Details for any improvements proposed within the right-of- way. The manhole details should be updated to include language for a water tight wrap around the adjusting rings and include carconite markers for any manhole or gate valve that is located in unpaved areas. The following notes should be added or amended on the plan set: • Any impacts to City streets (wet tap and curb cut locations) should be brought to grade with class 5 by the end of the work day and paved within 24 hours. • 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. Please note on the plans if there is any dewatering required for this project. If so, the City will want to review the dewatering plan prior to implementation. No dewatering activities can occur until the required permit is secured and submitted for review. Street and Building Access: One additional access point is being proposed for Lot 2, which is being located to line up with the existing Iodine Street on the southwest side of Nowthen Boulevard (CSAH 5). Staff is acceptable of this access and location, but it must be approved by Anoka County, as that road falls under their jurisdiction. Please clarify if this access road is proposed to have a crown in the road or will have superelevation and drain north to south. If it is intended to direct runoff to the south curbline, tipout curb and gutter should be installed along the north curbline and referenced in the plans with appropriate details. Noise mitigation: It shall be the responsibility of the Developer to determine compliance with noise mitigation standards since this is a use that is adjacent to the Trunk Highway system and the County road system. The State, County, and City do not have any plans or moneys allocated to introduce noise mitigation adjacent to this property. Please provide a noise analysis and concurrence letter from the MPCA that the development is using the most reasonable and feasible methods to control the effects of the traffic noise that is already in place. Utilities: • Please confirm that the proposed 8" watermain is adequately sized for both domestic use and fire flow requirements. • All ductile iron watermain 6" in diameter and smaller requires class 53 material. • All hydrants must be hand painted.