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0 4r Land Conservation Division <br /> v. ,, <br /> Dane County Land &Water Resources Department <br /> 41.`stoss Patrick J.Sutter,County Conservationist <br /> DATE: August 20, 2009 <br /> TO: Jim and Beth Hagstrom <br /> FROM: Jeremy Balousek, P.E. <br /> Urban Conservation Engineer <br /> RE: Hagstrom Residence—Erosion Control and Stormwater Management Plan, <br /> ES2009-0190 <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 Autumn Pond Trail using a stone tracking pad. The <br /> pad must be a minimum of 50' long x 24' wide x 12" deep and be constructed of 3-inch <br /> clear 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. Sediment logs must be installed in the swales at an interval of one per two feet of vertical <br /> drop once the swales have been graded. Sediment must be removed from the upslope <br /> side of the logs once it reaches V2 the logs' height. <br /> 3. 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 has been vegetated and stabilized. <br /> 4. All swales must be erosion matted during final site stabilization. The erosion matting <br /> must be WisDOT Class I, Type B, as specified in the plan. <br /> 5. Two bioretention basins must be constructed once the tributary areas have been <br /> constructed and stabilized. Care must be taken to prevent runoff from disturbed areas <br /> from entering the facilities, once they have been constructed and stabilized. The <br /> bioretention basins must be installed with 3-inches of hardwood mulch followed by 36- <br /> inches of engineered soil over 45-inches of sand or washed stone. <br /> 6. Grading must be confined to the areas shown on the plan. No material storage, vehicle <br /> traffic or grading may occur in the areas identified as"undisturbed"or"vegetated buffer" <br /> on the plan. In the event any of these areas are disturbed, additional erosion control <br /> measures will be required. <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 />