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Nitrate Loading (.'alctdatioils (Contiritted) <br />Notes: <br />1. Ave Monthly precip. for Uden, 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", 0.83 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 />Fractiona <br />I Total <br />Plant <br />Factor' <br />Product <br />Impervious Area <br />0 <br />0.1 <br />0.10 <br />Frees, Shrubs Groundcovers <br />0 <br />0.5 <br />0.00 <br />Lawn (Cool Season) <br />1 <br />0.8 <br />0.80 <br />Herbaciuos Perrenialsl <br />0 <br />0.5 <br />0.00 <br />Composite <br />1 <br />Home Fniit.rop;. Cecc:cus <br />0.90 <br />categories for impervious area assume <br />nominal 0.05 to 0.10 to account for <br />evotranspiration of rainfall retained on paved <br />Table 1. Plant Factors (PF) for established landscape plants, turfgrasses, <br />and garden crops to provide acceptable performance in California'. <br />Plant Type <br />Plant factor <br />Tree, Shrubs, dines. GrOundcorFs <br />C,5 <br />,19oodt phntti; <br />Herb3:eou_ Perrmials <br />C•S <br />Desert Adspted Pl;nts <br />C.3 <br />AnnuaiPo;rerF:Gdina-lints <br />O.S <br />Gen -_I Tu�grzss La;:rs. cccl•sa:_cr. ;tall <br />fescue, KY. blu_arass r a, bent; <br />QS` s <br />Gener Tudgjr-- I -X5 7,�m`•$ec;G1 <br />;barmuda, zois,a• St. =uyL:, ne, Os�aiO; <br />Home Fniit.rop;. Cecc:cus <br />O.S - <br />HcmeFriitCrOps. <br />p -F-n'C <br />Home'S,Qc.a� ..Spd <br />... <br />?Fo,fheP,anpirjiS1:'woitIe?,'otPiJe <br />i <br />' <br />preaot aiA t4? hfga?stPF <br />1 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 />4 From UC reference; note plant factors are annual average values; additional refinement may be needed for seasonal crops. <br />