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Notes: NitrateLoading Calculations (continued) <br />1. Ave Monthly precip. for Linden rain gauge <br />2. Estimated Average monthly runoff volume; zero assumed for this site with full on-site retention <br />3. "Available precip" equal to ave.monthly runoff volume precip minus estimed runoff volume. <br />4. Referenced potentional ETO obtained from CIMIS Zone 12, Linden rain gauge data <br />5. Actual ET adjustment based on the site specific landscape/plant cover (fractional multiplier); see <br />below for calculating "composite factor", 0.41 for this site. <br />6. Net rainfall recharge (" deep percolation") equal to Availbale precip (3) minus Actual ET (5); Negative <br />values set to zero. <br />Calculation of Composite of ETO Adjustment Factor <br />a. Key reference: University of Cali. Division of Agriculture and Natural Resources: Estimating Landscape <br />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 />0.01 <br />0.1 <br />0.00 <br />Trees, Shrubs Groundcovers <br />0.43 <br />0.5 <br />0.22 <br />Lawn (Cool Season) <br />0.55 <br />0.8 <br />0.44 <br />Herbaciuos Perrenials <br />0.01 <br />0.5 <br />0.01 <br />Composite <br />1 <br />0.66 <br />*Per Table 1for applicable landscape categories, for impervious area <br />assume nominal 0.05 to 0.10 to account for evotra n spi ration of rainfall <br />retained on paved surfaces, gutters, etc. <br />Table 1. Plant Factors (PF) for established landscape plants, turfgrasses, <br />and garden crops to provide acceptable performance in Gallfornial. <br />Plant Type <br />Plant Factor <br />Tree Shrubs vines. Grcundxvers <br />( .oadv clants) <br />J <br />HErt),�CE!C UE F'erennlal5 <br />Desert ::da. -ted F':arts <br />Annual Flo,er=_ a Eedd'np Plants <br />General Turfgres5 La'115. CCG-5E�5Cn ;[3�1 <br />fe SCLle. K'�. blUegrd SE r)E. bEnt <br />General TUrFgra ES La—E.-+ia­Seasc- <br />.b Erinuda. ZC-',512- St. AL:9USt:rle, bUffaIC; <br />_ <br />Hone Fruit Crccs. DECIdUCU5 <br />- <br />Home FILlit Crcpe. Everpreen <br />1.. <br />He -TE ebeta Cle Crc.:s <br />1 r. Z <br />E <br />-thc thi,alC�t ty:Jr <br />Petr .t ,.:f% Ltr`.`.:ghrs' PF <br />1 Values do not apply to any plant production operations, such as nurseries, greenhouses, <br />sod farms, or commercial farms. <br />Z Plant Factor shown is the annual average Kc value; monthly or seasonal Kc's may be available <br />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 <br />be needed for seasonal crops. <br />