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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 Eto obtained from CIM IS Zone 12, Eastside Sacramento -San Joaquin Valley; Represents Value for lawns and other uniform turf areas. <br />S. 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 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 Plantproduct <br />Total Factor" <br />Impervious Area <br />0 <br />0.1 <br />0.10 <br />Trees, Shrubs Groundcovers <br />1 <br />0.5 <br />0.50 <br />Lawn (Cool Season) <br />0 <br />0.8 <br />0.00 <br />Herbaciuos Perrenials <br />0 <br />0.5 <br />0.00 <br />Compositel <br />1 1 <br />g�s.a <br />1 0.60 <br />area assume nominal 0.05 to 0.10 to account for <br />evotranspiration of rainfall retained on paved surfaces, gutters, <br />etc. <br />Tabk 1. Plaid Factors (PF) far established landscape plants, t-— <br />and garden asps to provide acceptable performance In California'. <br />Plant Type <br />Plaid Factor <br />flee. StmA., Ymes, G—d—ers <br />05 <br />ewaodi dant:} <br />tfetba_Pe-miais <br />C.! <br />Decxt adapted Manu <br />0.3 <br />anra,al Hower, h8edd,na Monte- <br />0.8 <br />Genera( lirfgrass Lawns. mal.xeaaan ;tali <br />a a <br />IeaRle, Sq. bluagraS.s, he, bw_ R) <br />0,! <br />G—al TOgrass Lewna, waT'-6la5Cn <br />g�s.a <br />(beTuda, ZCylla. SL augu5tine, hur.'a!a} <br />game F -t =rops, Decdaaus <br />OB a <br />Meme Fak Orppa, Evergreen <br />1.0 <br />Ncmewgetable cops <br />Ix - <br />A''fhdq, <br />Ad q,r'arl.yFa <br />� <br />rrn: m!thd AigMnTF <br />1 Values do not apply to any plant production operations, such as nurseries, greenhouses, sod farms, or commercial farms. <br />1 Plant Factor shown is the annual average Kc value; monthiv 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 />