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Nitrate Loading Calculations (continued) <br />Notes: <br />1. Ave Monthly precip. for Lodi, Western Regional Climate Center <br />2. Estimated Average monthly runoff volume; zero assumed for this site with full on-site retention of rainfall level site. <br />3. "Available precip" equal to ave.monthly runoff volume precip minus estimed runoff volume. <br />4. Referenced Etc obtained from CIMIS Zone 12, Eastside Sacramento -San Joaquin Valley; Represents Value for lawns and other uniform turf areas. <br />5. Actual ET adjustment based on the site specific landscape/plant cover (fractional multiplier); see below for calculating "composite factor", 0.55 for this site. <br />6. Net rainfall recharge (" deep percolation") equal to Availbale precip (3) minus Actual ET (5); Negative values set to zero. <br />Calculation of Composite of ETO Adjustment Factor for Hypothetical Residential Lot <br />a. Key reference: University of Cali. Division of Agriculture and Natural Resources: Estimating Landscape Water Requirements (Table 1) <br />b.Site Development Conditions: <br />Land Condition <br />Fractional <br />Total <br />Plant <br />Factor" <br />Product <br />Impervious Area <br />0.05 <br />0.1 <br />0.01 <br />Trees, Shrubs Groundcovers <br />0.95 <br />0.5 <br />0.48 <br />Lawn (Cool Season) <br />0 <br />0.8 <br />0.00 <br />Herbaciuos Perrenials <br />0 <br />0.5 <br />0.00 <br />Composite <br />1 <br />Home Fruit Crops, Deciduous <br />0.48 <br />*Per Table lfor applicable landscape categories for impervious area <br />assume nominal 0.05 to 0.10 to account for evotranspiration of rainfall <br />retained on paved surfaces, gutters, etc. <br />Table 1. Plant Factors (PF) for established landscape plants, wrr0rasses. <br />and garden crops to provide acceptable performance In catiforniar. <br />Plant Type <br />Plant Factor <br />Tree. Shrubs. Vases, Groundmvers <br />1.5 <br />(woody Plants) <br />Herbaceous Pervnrials <br />C.5 <br />Desert Adapted Plants <br />0.3 <br />Annual Flowers & Bedding Plants <br />0.8 <br />General Tlufgrass Lawns, mol -season ;taA <br />0.6 Za <br />fe,cJe ky. bluegrass, rre. ben; <br />GeneralTudgrass Lawns, warnrs=_ason <br />0.6za <br />(b -da, zoysia. St. Augusts-, b,.frah) <br />Home Fruit Crops, Deciduous <br />0.6 z <br />Home Fruit Dope, Evergreen <br />1.0 <br />Home Vegetable Crcps <br />1.02 <br />FFrf7hepI.&I a that q(th,Plant flip, <br />MMed Plantings <br />ararpirh the 14.1.9?F <br />1 Values do not apply to any plant production operations, such as nurseries, greenhouses, sod farms, or commercial farms. <br />z Plant Factor shown is the annual average Kc value: monthly or seasonal Kc's may be available if more precision is desired. <br />3 Plant Factor does not apply to sports fields, golf greens or tees. <br />A From UC reference; note plant factors are annual average values; additional refinement may be needed for seasonal crops. <br />