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Nitrate Loading Caltulatirnls (continued) <br />Notes: <br />1. Ave Monthly precip. for Liden, 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 />S. 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 Ef0 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 />ITotal <br />Plant <br />Factor* <br />Product <br />Impervious Area <br />0 <br />0.1 <br />0.10 <br />Trees, 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 1 <br />0.00 <br />Composite <br />1 <br />1 <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, tudgrasses, <br />and garden crops to provide acceptable performance in California'. <br />Plant Type <br />Plant Factor <br />Tree, ShrJb_, Dines, Groundcc':2r <br />0.5 <br />;woody plant' <br />Herbaceous PPaennials <br />0,5 <br />Ces2 4,13pt2dP:ant5 <br />03 <br />anrua': ;:io:'r2rs A B2ddm y Y,3nta <br />g <br />General Tu'rfgr3s3' a,'r?. Cva•g23a "• ;'.ai: <br />r.3• - <br />�eiCt12, A'i. uiuegi 3'v,'i2. beret, <br />"General Turfgr3ss L37.nS. sarin x2350^ <br />,bemuda. zc(s,a, 5`. Augu r2, bu�al,' <br />u J <br />1­13meFpjitC'rop5 Ceodueus <br />0.9: <br />Home Fret Crops E.2"grsen <br />1 <br />1X112 ' eg2ubie C -oz <br />rrC.'t eftt,'rg L, tha;OfI>er)aattype <br />=�?27 ��Fnticos <br />eSZ:i 1, M. ire "Y'gh i ?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 values 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 />