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Estimate the retention pond volume and quantity of runoff that may be hauled to the Stockton wastewate <br /> treatment plant. <br /> Case I. Assume the entire site is drained into the retention pond <br /> )rainage area 33.23 acres <br /> Average year net precipitation <br /> Net precipitation exceeds the evaporation in December,January and February <br /> Net depth 5.67 inches <br /> 24-hour,25-year precipitation event <br /> Stockton WSO 1.96 inches <br /> Stockton WBAP 2.28 inches <br /> Wet season long term storage exceeds the short-term high intensity event and therefore controls. <br /> Retention volume required= 683,383 cu.feet <br /> 5,111,703 gallons <br /> Estimate the volume hauled during a "wet"year <br /> Use the maximum net from page 1. <br /> Volume of runoff for January, February, March and December 1,842,550 cu.feet <br /> 13,782,275 gallons <br /> Less the storage volume 5,111,703 gallons <br /> Volume hauled 8,670,571 gallons <br /> Case II--Assume that runoff from Area C (active composting)and D retention pond are collected. <br /> Assume that Area A and B are uncontaminated and drain separately to a sedimentation basin sized <br /> for the 24-hour, 25-year event. <br /> Drainage area 16.47 acres <br /> Average year net precipitation <br /> Net precipitation exceeds the evaporation in December,January and February <br /> Net depth 5.67 inches <br /> 24-hour,25-year precipitation event <br /> Stockton WSO 1.96 inches <br /> Stockton WBAP 2.28 inches <br /> Wet season long term storage exceeds the short-term high intensity event and therefore controls. <br /> Retention volume required= 338,709 cu. feet <br /> 2,533,547 gallons <br /> FN: dtr/a:\WATERBAL.XLS Page 2 of 5 Printed: 8/31/94 3:46 PM <br />