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(100 cubic feet = 748 gallons) (2) In this next hypothetical example, the landscape project in Fresno, CA has the same ETo value of 51.1 inches and a total landscape area of 50,000 square feet. Within the 50,000 square foot project, there is now a 2,000 square foot area planted with edible plants. This 2,000 square foot area is considered to be a Special Landscape Area. MAWA = (ETo) (0.62) [(0.7 x LA) + (0.3 x SLA)] MAWA = (51.1 inches) (0.62) [(0.7 x 50,000 square feet) + (0.3 x 2,000 square feet)] = 31.68 x [35,000 + 600] gallons per year = 31.68 x 35,600 gallons per year =1,127,808 gallons per year or 1,508 hundred-cubic-feet per year (d) Estimated Total Water Use. The Estimated Total Water Use shall be calculated using the equation below. The sum of the Estimated Total Water Use calculated for all hydrozones shall not exceed MAWA. ETWU = (ETox0.62)~PF ~~ + SLA~ Where: ETWU =Estimated Total Water Use per year (gallons) ETo =Reference Evapotranspiration (inches) PF =Plant Factor from WUCOLS (see Section 491) HA =Hydrozone Area [high, medium, and low water use areas] (square feet) SLA =Special Landscape Area (square feet) 0.62 = Conversian Factor IE =Irrigation Efficiency (minimum 0.71) (1) Example ETWU calculation: landscape area is 50,000 square feet; plant water use type, plant factor, and hydrozone area are shown in the table below. The ETo value is 51.1 inches per year. There are no Special Landscape Areas (recreational area, area permanently and solely dedicated to edible plants, and area irrigated with recycled water) in this example. H drozone Plant Water Use T e s) Plant Factor (PF)* Hydrozone Area (HA) (s ware feet) PF x HA (s uare feet l Hi h 0.8 7,000 5,600 2 High 0.7 10,000 7,000 3 Medium 0.5 16,000 8,000 4 Low 0.3 7,000 2,100 5 Low 0.2 10,000 2,000 Sum 24,700 *Plant Factor from WUCOLS ETWU = (51.1)(0.62)~2~1,700 + ~~ D. 71 = 1,102,] 16 gallons per year 10