Agenda - Council - 07/26/2005 - Laserfiche WebLink

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Will the project change the number or type of watercraft on any water body? If yes, indicate the current and projected watercraft usage and discUss any potential. overcrowding or conflicts with other uses. [~ Yes Give the acreage to be graded or excaVated and the cubic yards of soil to be moved. Describe any steep slopes Or highly erodible soils and identify them On the site map. Describe any erosion and sedimentation control measures to be used during and after project construction. Acres 170 Cubic Yards 600,000 CY · Tho proposed development is situated west of the To~ Center. N general, the proposed site gently slopes towards thc south. Thc sto~ water runoffis routed ~om thc nonh to the south and eventually to the Mississippi River via the City's strum sewer system. Prop6sed development sto~ water management system(s) will meet anWor exceed MPCA requirements. Proposed dischmge flow rates will be equal to or less than the existing flow rates. As pm o f the platting process, an Erosion and Sediment Control Plan ~d a Sto~ Water Polluti°n Prevention Plan (SWPPP) will be submitted for review and approval. The developer must also. obtain and comply with National Pollulant Discharge Elimination System ~PDES) pe~it requirement, indlu~ng the S~PP. Land disturbing activities shall occur in inCremen~ so that adequate BMP c0ntr61 can be provided'throughout all phases o f construction. In all are~ outside of the cons~uction area, the existing vegetation shall be prese~ed to provide a permanent vegetative cover. During construction, silt fences, sto~ water b~ins ~d seeding disturbed slopes will be utilized as soon ~ possible to limit the amo~t of sediment leaving the site. Silt fences ~11 be installed do~] ~adicnt ~om construction are~ and wherever ~off ~om the cons=uction area disch~ges ~om the site. Grading will be minimized in wooded arc~ ~nd slop~ will be ravened in ~Med.~e~ ~ much ~ possible to prevent erosion and sediment dcp0si~. Grading will be limited ~ roadway const~ction, sto~ water ponds and ho~e p~. Soils ~om the cut are~ will be used in thc fill areas to create a balanced overall si!e. B~s will be ~ed for erosion con~ol 'including pon~, topsoil re-spread, turf establishment, silt fences, rock cons~cfion enhance ~d erosion con~ol mats or wood fiber blankets. According to the Sell'Survey of~oka CounW, soils on the site ~e DnA (Die,nan sandy lo~, 0 to'2 percent slopes), Dp (Duelm loamy coarse sand), Hu& H~, HuC ~Ubb~d cease sand, 0 to 2 percent slopes, 2 to 6 percent slopes, and 6 to 12 percent slopes, respectively),' Is (Isan sandy lomn), Ma ~arkey muck), ~d NrD ~ymorc loamy coarse sand, 12 to 25 percent). The distribution of these soil ~es is sho~ in Figure 4. Some of' these soils have slopes greater than 12%, which is the definition of steep slopes. ~I proposed slopes ~e less than 6%. The only highly credible soil on the site is NrD ~ore lo~y coarse sand, 12 to 25 percent); whioh is located on the northe~t side of the site and accoUnm for a ve~ Small posen of the iite (estimated at 5 aor~s), a. Compare the quantity and quality Of site runoff before and after the proiect. Describe permanent controls to manage or treat runoff. Describe any stermwater pollution prevention plans. Thc existing site discharge is mainly from agricultural activities. The proposed discharge will be collected into a