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• Land Conservation Division <br /> 0 Dane County Land &Water Resources Department <br /> Patrick J.Sutter,County Conservationist <br /> DATE: July 8, 2009 <br /> TO: Bay View Heights, Inc. <br /> Owner <br /> FROM: Josh Harder <br /> Erosion Control Engineer <br /> RE: Town of Dunn Storm Shelter—Erosion Control and Stormwater <br /> Management Plan,ES2009-0119 <br /> The submitted erosion control and stormwater management plan meets the needs of the site. <br /> The plan includes the following requirements: <br /> 1. The site may only be accessed off Norman Drive using a stone tracking pad. The pad <br /> must be a minimum of 50' long x 24' wide x 12" deep and be constructed of 3-inch clear <br /> stone.No other site access may be used and material deposited in the road will be <br /> cleaned up throughout and at the end of each workday. <br /> 2. Silt fence must be installed prior to grading in the locations shown on the plan and where <br /> deemed necessary, including the down slope of all soil stockpiles. The silt fence must be <br /> maintained until the site is vegetated and stabilized. <br /> 3. A sediment basin must be constructed in the location shown on the plan prior to other <br /> grading. The stone weeper and tile drain outlets must be constructed concurrent with <br /> basin construction. <br /> 4. Disturbed slopes steeper than 3:1 will be covered with erosion mat(WI DOT Class I, <br /> Type A). All swale bottoms will be covered with erosion mat(WI DOT Class I, Type B) <br /> during final stabilization. <br /> 5. Grading must be confined to the areas shown on the plan. No material storage, vehicle <br /> traffic or grading may occur outside the limits of disturbance identified on the plan. <br /> 6. Culvert and pipe outfalls must be protected by rock riprap. The riprap must be installed <br /> such that it forms a"bowl"with a depth of at least 12-inches to dissipate runoff energy. <br /> 7. As-built plans and certification,performed by a professional engineer, will be required <br /> for all permanent stormwater management practices and facilities. <br /> Lyman F.Anderson Agriculture&Conservation Center <br /> 1 Fen Oak Court,Room 208,Madison,Wisconsin 53718-8812-PH: 608/224-3730,FAX:608/224-3745 <br /> www.countyofdane.com/landconservation <br />