03/10/2004 P&Z Packet - Laserfiche WebLink

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Oakwood View Page 2 February 26, 2004 City of Lino Lakes, Minnesota 3. For Subcatchment Area 7, NRCS Type A soils are used for the proposed conditions, while Type B soils are used for the existing conditions. This must be explained or clarified. 4. Further explanation or examination of the HydroCad model for the 1 -year event proposed conditions must be conducted. Pond 13P as shown having an outflow, but no inflow. 5. The wetland must not be utilized for rate control. 6. A copy of the Storm Water Pollution Prevention Plan (SWPPP) must be forwarded to the City. 7. Flood elevations for the wetlands must be shown on the grading plan. 8. The anticipated high ground water level must be known. 9. The calculations must account for future building and parking lot expansions for the church and/or enabling facility. Other general comments regarding drainage are as follows: 1. An NPDES Phase II permit has been forwarded to the MPCA. All requirements of the Permit, including the submittal of a Storm Water Pollution Prevention Plan ( SWPPP) to the City, shall be completed prior to engaging in grading activities. 2. Review and approval of the Rice Creek Watershed District is required. The Developer shall provide a copy of the permit application and correspondence to date with the Watershed. The storm drainage plan requires further information regarding outlets. For example, PS5 appears to be an outlet structure that regulates flow from Pond 11 to the north and eventual discharge to the west through a proposed 21 -inch storm sewer. Further south, FES 3 discharges to a proposed detention area that appears to connect to Pond 11. An emergency overflow and elevation must be identified and shown. This portion of the plan, including a detail for PS5 should be clarified on the plan further. 4. Stormwater routing at the south end of the property (Ponds 2,3,4, and 5, and existing wetlands) is unclear and incomplete on the grading and utility plans. Flow directions and discharge locations (including emergency overflows and outlets) are not shown clearly. Much of the information that is provided is cluttered or difficult to read. . The grading and stormwater routing plan will be subject to the review and approval of the Rice Creek Watershed District. The Grading Notes on the Preliminary Grading, Drainage, and Erosion Control Plan should be numbered.