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Casper Creek 7ownhouse� <br />6/04/93 <br />II. <br />WETLAND ANALYSIS <br />Basin "B" <br />EXISTING SITE CONDITIONS <br />rea 4.65 acres <br />CN Value 83.0 <br />Time of Concentratfon <br />88-4555 <br />CRO <br />The existing time of concentration travel path of Basin "B" consists of 250 feet of <br />sheet flow over forest at 8.50 percent and 120 feQt of shallow ilow over forest at <br />1.75%. The time of concentration vras calculated within the computer program <br />"Wate•Works Vr,rsion 2" to be 37.40 minutes. <br />DEVELOPED SITE CONDITIONS <br />� 2.95 acres <br />CN Values <br />Impervious Area = 0.45 acres <br />CNlmperviou� = 98 <br />Pervious Area = 2.50 acres <br />CNPerv�ou� = 83.53 <br />Time ot Concentration <br />(Rooftops - Buildings 11-15 to wetland) <br />(1.65 acres of wetland,wetland mitigation area <br />and 35 foot buHer which wiil remain <br />undeveloped. The remaining area wiil consist of <br />lawns/Iandscaping in good condition.) <br />The developed time of concentration travel path to the wetland consists of 125 feet <br />of sheet flow at 8.50 percent and 120 feet of shallow flow at 1.75 percent. The <br />developed time of concentration was calculated to be 22.77 minutes. <br />