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<br />CAMEO REFUSE DISPOSAL AREA <br />PONO N 6 <br />Area: 32.4 acres <br />r Hydrologic Soil Group: D <br />Ground Cover: 0-5% <br />' Curve No.: 88 <br />Precipitation Event: 10-year, 24-hour <br />Precipitation: 2.4 inches <br />Direct Runoff: 0.55 inches <br />Calculations: <br />Volume of Runoff = (0.55)(32.4)/12 = 1.485 acre-feet <br />Sediment Storage Volume = 2 year <br />Sediment Oepth = (.067)(3Z.4)(43,560)/38,500 = 2.46 feet <br />~ Pond Capacity Required = 1.485 + 2.46 = 3.95 acre-feet (172,062 ft3) <br />I • Pond Design: <br />.' Average Area: 38,500 ft2 <br />Depth: 7.0 ft <br />Freeboard: 1.8 ft <br />Height of Spillway = 5.2 ft <br />Spillway Design: <br />Precipitation Event: 25-year, 24-hour event <br />Precipitation: 1.8 inches <br />Direct Runoff: 0.86 inches <br />Q=qAR <br />Q = (780)(.05)(.86) = 33.5 cfs <br />A 36" corrugated metal pipe @ 2 % slope will carry 49.06 cfs. <br />Q = (.1414)(347) = 49.06 cfs <br />• <br />CRDAI - l (New 10/81) <br />