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Forward Landfill HYDROLOGY <br /> WATER BUDGET 07/17/2014 <br /> WATER BUDGET <br /> Month OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP YEAR Notes <br /> Average(Mean)Precipitation(Inches) 0.74 1.80 2.23 2.92 2.27 2.15 1.17 0.41 0.09 0.03 0.04 0.30 14.14 (1) <br /> Rainfall(Inches) 1.20 2.93 3.63 4.75 3.70 3.50 1.90 0.67 0.14 0.05 0.07 0.49 23.03 (2) <br /> Evaporation(Inches) 3.93 1.7 0.74 0.72 1.58 3.87 5.97 8.47 10.95 10.82 9.56 6.6 64.91 (3) <br /> Runoff Depth to Pond(Inches) 0.37 1.75 2.39 3.44 2.45 2.27 0.88 0.09 0.01 0.04 0.03 0.03 13.76 (4) <br /> Demand(Ac-Ft) 6.11 2.64 1.15 1.12 2.46 6.01 9.28 13.16 17.02 16.82 14.86 10.26 100.9 (5) <br /> Runoff Volume to Pond(Ac-Ft) 1.22 5.71 7.78 11.20 7.98 7.40 2.88 0.29 0.05 0.14 0.11 0.09 44.8 (6) <br /> Storage(Ac-Ft) 0.00 3.07 6.63 10.08 5.52 1.39 0.00 0.00 0.00 0.00 0.00 0.00 10.1 (7) <br /> Supply from Well(Ac-Ft) 4.89 0.00 0.00 0.00 0.00 0.00 6.40 12.88 16.97 16.68 14.75 10.16 82.7 (8) <br /> 18.00 . _____.__.._...,_..___.__..., I 12.00 <br /> 16.00 _. <br /> 10.00 .... .. _. .. .,._.............. ._...... .._. . . �._..., <br /> 14.00 _ I .. <br /> 12.00 ._ _.._.. _.__... _.. ,.. . _ _ ...._._ � 8.00 .)__.. ......_...._ _..... . . <br /> w Demand(Ac-Ft) <br /> 10.00 . -Rainfall(Inches) <br /> 6 0D _ <br /> Runoff Volume[o Pond(Ac-Ft) <br /> 8.00 Evaporation(Inches) <br /> Storage(Ac-Ft) 4.00 <br /> 6.00 _. __ .__ ..._. .. .. .._.........--..._ _......,-_.__ Series3 <br /> { 4.00 .l .... ..._ _ _. .... .. _ .. . _. . ,-. .. - <br /> N Supply from Well(Ac-Ft) <br /> 2.00 ....._. __..__.........-.. ._ ._.... ._...,........__..-_...._................. <br /> 2.00 <br /> I <br /> 0.00 0.00 <br /> 0�BOJ OCG 1p���0�Q2 PQ�F1 ,J� ,J�PJ(7 y4Q I p Z o ¢ um, a ? a va <br /> LL <br /> Total Area 39.1 Acres <br /> Pond Area 1.8 Acres <br /> Net Area 37.3 Acres <br /> Compost Density 0.5 <br /> Compost Area 16.7 Acres <br /> Annual Runoff 44.8 AC-FT <br /> Percent Seasonal Runoff 59.8% <br /> Max Process Water Storage 10.1 AC-FT <br /> Seasonal Runoff(Nov-Mar) 40.1 AC-FT <br /> Notes: <br /> (1)California Department of Water Resources,Flood&Safety,Climate Data,Precipitaion,Monthly Historical Data,Stockton AP.July 2014 <br /> (2)Distribute monthly using 25-year return period annual total precipitation value=23.03 Inches and average precipitation. <br /> (3)Western Regional Climate Center,Monthly Average Pan Evaporation,July 2014. <br /> (4)Compute runoff from precipitation using SCS Curve Number Method for a CN=88. <br /> (5)Compute water demand for compost area assuming moisture in stock piles lost by evaporation must be replaced.Assume 50%of area is compost.Volume is equal to evaporation depth times the <br /> compost area. <br /> (6)Runoff volume to pond is the net site area times the runoff depth. <br /> (7)Storage volume in pond is equal to the runoff volume minus the evaporation volume but not less than zero.The yearly value represents the mapmum monthly storage required for the pond. <br /> (8)Supply from well or other source is equal to the demand less the storage volume. <br /> Hydr WATER BUDGET Page 1 of 6 <br />