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Section B2. Estimated Total Water Use (ETWU) <br />The project's Estimated Total Water Use is calculated using the following formula: <br />ETWU = (ETo)(0.62)~P ~~ +SLA <br />where: <br />ETWU =Estimated total water use per year (gallons per year) <br />ETo =Reference Evapotranspiration (inches per year) <br />PF =Plant Factor from WUCOLS (see Definitions) <br />HA =Hydrozone Area [high, medium, and low water use areas] (square feet) <br />SLA =Special Landscape Area (square feet) <br />0.62 =Conversion Factor (to gallons per square foot) <br />IE =Irrigation Efficiency (minimum 0.71) <br />Hydrozone Table for Calculating ETWU <br />Please complete the hydrozone table(s). Use as many tables as necessary. <br /> <br />H drozone Plant Water <br />Use T e s Plant <br />Factor PF Area (HA) <br />s uare feet PF x HA <br />s uare feet <br /> <br /> <br /> <br /> <br /> <br /> Sum <br /> SLA <br />Estimated Total Water Use = gallons <br />Show calculations. <br />32 <br />