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. <br />I- <br />f <br />£ <br />VJ.r <br />% <br />7' •'• <br />Table 2 <br />Minnehaha Creek Watershed District <br />Brenshell Homes Development <br />Rule <br />N (subdivision with <br />density less than 2 <br />units/acre - needs to <br />conform to BMPs) <br />Minimum proposed <br />opening 2 feet or <br />more above 100*year <br />flood level <br />Structural BMPs <br />Non-structural BMPs <br />Temporary <br />Project <br />Conforms <br />Yes <br />Silt fence is <br />shown. <br />Project Does Not <br />Conform <br />The east pond should <br />probably be moved to the <br />west to avoid negative <br />characteristic impacts to <br />the ravine. <br />Skimmers should be <br />installed at pond outlets. <br />Riprap at pond outlets <br />should be sized <br />appropriately. <br />The 4" orifice Is likely to <br />plug. An emergency <br />overflow should be <br />provided so that the dike <br />does not collapse. <br />A revised structure is <br />suggested for the 7.5% <br />slope of the outlet for the <br />east pond to reduce flow <br />velocities. <br />The design does not <br />incorporate other BMPs. <br />Eliminates wetland in Lot <br />1. <br />No information provided <br />on other BMPs. <br />A rock filter dike is <br />probably more <br />appropriate in the <br />channel of Lot 2. <br />No rock entrance/exit is <br />shown.