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7 Estimate the retention pond volume and quantityof runoff that ma be hauled to the Stockton wastewate <br /> treatment plant. <br /> ase 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 tits evaporation in December,January and February <br /> Net depth 5.67 inches <br /> 24-hour,25-year precipitation event <br /> Stockton WSO 1.56 inches <br /> Stockton WBAP 2.28 inches <br /> Wet season long terra storage exceeds the shortternt high intens' event and therefore controls. <br /> Retention volume required= 683,383 cu.feet <br /> 5,111,703 gallons <br /> Estimate the volume hauled during a'+Net" ear <br /> Use the maximum net from page 1. <br /> oiume of runoff for January, Februa ,,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 sepa to a sedimentation basin sized <br /> for the 24-hour,25-year event. <br /> - <br /> Drainage area 16.47 acres <br /> Average year net precipitation <br /> Net precipitation exceeds ibe evaporation in December,January and February <br /> Net de th 5.67 inches <br /> 24-hour,25- ear precipitaffon event <br /> Stockton WSO 1.96 inches <br /> Stockton WRAP 2.28 inches <br /> Wet season lon torm storage exceeds the short-ter high intens' event and therefore controls. <br /> Retention valume re aired= 338,705 cu.feet <br /> 2,533,547 gallons <br /> -- FN:dtr/ae1WATER AL. LS Page 2 of 5 Printed: 1/ 3:46 P <br />