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Nits ate 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 Eto 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 Avallbale precip (3) minus Actual ET (5); Negative values set to zero. <br />Calculation of Composite of ETD 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 Fractional Plant product <br />Total Factor' <br />Impervious Area <br />0.23 <br />0.1 <br />0.10 <br />Trees, Shrubs Groundcovers <br />0 <br />0.5 <br />0.00 <br />Lawn (Cool Season) <br />0.77 <br />0.8 <br />0.62 <br />Herbaciuos Perrenials <br />0 <br />0.5 <br />0.00 <br />Compositel <br />1 1 <br />1.0 = <br />0.72 <br />"Per Table lfor applicable landscape categories for Impervious area <br />assume nominal 0.05 to 0.10 to account for evotranspiration of <br />rainfall retained on paved surfaces, gutters, etc. <br />Table 1. Plant Factors (PF) for established landscape plants, lurfgrasses, <br />and garden crops to provide acceptable performance In Calif" tat. <br />Planl Type <br />Plant Factor <br />]rea 5taals, V ­ s. G'a-acorers <br />(-v dy plants) <br />0.5 <br />Herbaceous perenrnals <br />0.5 <br />Des art Adapted Flants <br />0.3 <br />Arnual Flowers E aedon0 wants <br />0.8 <br />General Turftna Lawns, a00-- gall <br />I—e. Ky. bluegrass, rye. bent) <br />0.E a <br />Gen W T�-forgo La -S. wammaeason. <br />:barmuda, xc,sia. 51, A.C.Aine, buffa;o) <br />Home Fndt Crops, Dx Juau. <br />0.9 <br />Home I" crests. Evergreen <br />1.0 <br />Hama V09"Ie Crepe <br />1.0 = <br />Foxed Ptaotti2s <br />FolrAeplanriip 4lipl affhep7aID type <br />roenl ndrA rhe Airhrel PF <br />2 Values do not apply to any plant production operations, such as nurseries, greenhouses, sod farms, or commercial farms. <br />2 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 />From UC reference; note plant factors are annual average values; additional refinement may be needed for seasonal crops. <br />