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Estimate the retention p2nd volume and quantity of runoff that ma be hauled to the Stockton wastewate <br /> treatment plant. <br /> Case 1. Assume the entire Sites drained Yinto the retention pond <br /> -)rainage area 211M acres <br /> Average year net precipitation <br /> Net precipitation exceeds the evaporation in December,January and Februa <br /> Net depth 5.E7 inches <br /> 24-hour,25-year precipitabon event <br /> Stockton WSO <br /> 1.96 inches <br /> Stockton WBAP 2.28 inches <br /> F" o <br /> --...-.1- I I . I <br /> Wet season lonq term storage exceed:5 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 /> I I J <br /> =Use the maximum net from pa-Le 1. <br /> Volume of runoff for January, February, March and December <br /> 1,842,550 cu.feet <br /> 13,782,275 gallons <br /> -Cess the storage volume 5,111,703 alions <br /> Volume hauled .8,670,571 gallons <br /> Case ll—Assume that runoff from Area C(active composb,a( )and D retention pond are collected. <br /> -Assume that ArewA and B are unc-ontitminated and drain separat ly to a sedimentation basin sized <br /> for the 24-hour, 25;-year event. <br /> L <br /> Drainage area 16.4*7 acres <br /> Average ye r net precipitatioa— <br /> L <br /> Net precipitation exceeds the evaporation in December,January and February <br /> LNet depth 5.671 inches <br /> 24-hour, rear precipitation event <br /> L L <br /> -Stockton WSO <br /> 1.96 inches <br /> Stockton WBAP 2.28 inches <br /> Wet season long term storage exceeds the short-term high interns' event and therefore controls. <br /> Retention volume required= 338,7091cu.tefleet <br /> -T- I <br /> L 2,533,5471 gallons <br /> FN: dtr/aAWATERBAL.XLS Page 2 of 5 Printed:8/31/94 3:46 PM <br /> i <br /> L <br />