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RECEIVED <br /> Nitrate Loading Calculations(continued) JAN 13 2021 <br /> ENVIRONMtN IAL HEALTH <br /> Notes: DEPARTMENT <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 runoffvolume. <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 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 Fractional Plant Product <br /> Total Factor' <br /> Impervious Area 0 0.1 0.10 <br /> Trees,Shrubs Groundcovers 0.01 0.5 0.01 <br /> Lawn(Cool Season) 0 0.8 0.00 <br /> Herbaciuos Perrenials 0.99 0.5 0.50 <br /> Composite 1 1 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 /> Table 1.Plant Fatmrs(PF)for esbMWied lends<a.e plants,tudprasses, <br /> a <br /> and aardes craps to Provide «eotable performance m Cspfomla r. <br /> Mail Type --_ plait Factor <br /> Tree,Sw",Yves,G mark ysa <br /> 0.5 <br /> (woody plants) <br /> Herbaceous P—rdals 0.5 <br /> DoseR Adapted Planes 0.3 <br /> Amoral Flowers 88ed&Plies 0.8 <br /> General Tafgrass Lawns,coal-season(tatl <br /> O.Bxp <br /> re^.rue,KY.bWepass,ry4 bark) <br /> General TpfWass Lawns,wan"-season 0 6 z s <br /> (bensala,zoysia,5t.Auousbne.buffalo) <br /> Home F crops,Deudraus 0.8 a <br /> Home FnA crops,EwTeen 1.0 <br /> Home vegetable crops L0. <br /> Foxed parainps Foraep/mr ngis Mat rM.Puny type <br /> miM Me ApbestPF <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 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 /> A From UC reference;note plant factors are annual average values;additional refinement may be needed for seasonal craps. <br />