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Forward ROSi <br /> Runoff Calculations <br /> Land Areas <br /> 0 Brea A--Waste receiving,grinding and stockpile 9.09 acres <br /> f Area B-COM20st screening,curing and product storage ----7 - <br /> .67 acres <br /> Area C--Active composting area ---14.9-2-acres <br /> Area D--Stormwater retention and T 1.55 acres <br /> Total I--- <br /> 33.23 acres <br /> Assume retention pond is designed to hold the average annual runoff from the entire site. <br /> Assume the runoff for wetter years will be hauled to the Stockton municipal wastewater-treatment plant until <br /> the water qualq can be measured to determine if discharge to the South Fork of Uttlejohn's Creek is permissible. <br /> Assume the water in the retention pond will be evaporated or used in the compost process in dry weather to obtain <br /> desired initial moisture content of mixtire sent to composting. <br /> Assume a runoff coefficient of 1.0 for ralculatin the size of the retention basin. <br /> Water Balance <br /> Average Average Average Average Maximum Minimum Minimum Maximum <br /> Precipitation Evaporation Evaporation Net Precipitation Evaporation Evaporation Net <br /> L (inches) (millimeters)_jinches) (inches) (inches) millimeters (inches) (inches) <br /> January 2.75 1.3--0.71 -2.04-6.2 14 0.55 5.65 <br /> LFebruary 2.76 -35 1.38 1.38 5.28 -34- 1.34-:3.94 <br /> March 2.28; -97- 3.82 -1.54. 3.51 70 2,76-0.75 <br /> 'A'pril -1.03- 163 6.02 -4.99 0.65 -154'-6.66- -5.41 <br /> .aY- 0.53 227 8.94 -8.41 0.11 232 9,13 -9.02 <br /> 1. une 0.07 29) 11.42 -11,35 0 2541 10.00 -10.00 <br /> July 0.01L 0 250 9.84 -9-84 287 11.30--11.29 0 274 10.79 -10.79 <br /> August - 0 257 10.121 -10.12 <br /> September 0.11 181 7.13 -7.02 0.03 203 7.991 -7.96 <br /> October 0.71 103 4.13 -3.42 0.56 87 3.43 -2.87 <br /> November 1.38 .49 1.931 -0.55 0.28 - 42 1.65 -1.37 <br /> December 2.99 1l3 0.75 2.24 - 5.6 17 0.67 4.93 <br /> Total 14.62 1.711 67.36 -52.74 22.22t 1,638 64.49 -42.27 <br /> LNotes: <br /> 1. Monthly precipitation data from Stockton Fire Station No.4 for the p2dod 1931 through 1952. <br /> 2. Monthly evapgration data from Stockton station 890 856200 for the period 1955 through 1963. <br /> 3. Netcolumnis calculated as precipitation minus evaporation. A negative value indicates net evaporation, <br /> 4. Maximum preciphation Is for 1940. This is ap2roximately a one In 25 Lear event, <br /> 5. Minimum evaporation is for 1958.L 1- <br /> 16. Maximum net Is calculated as maximum precipitation minus minimum evaporation. <br /> L. <br /> LeFN:dtr/a:XWATEFiBAL.XLS Page I of 5 Printed:8131/94 3:46 PM <br /> L <br />