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Table 4,Preapplication Report (continued) <br /> Sludge Loading Calculations <br /> (D)Sludge/Sand Mix Loading Limits for an Example Feld <br /> Alfalfa N Demand = 375 lbs/acre <br /> Track and Trailer = 46300 lbs/load = 23.15 tons/load(wet basis) <br /> 39 cubic yards/load <br /> Field Size = 80 acres <br /> Per-acre Loading <br /> Rate for Sludge- <br /> Sand Mix = N Demand of Crop/Available N Concentration in Sludge-Sand Mix <br /> 12.3 moist tons/acre <br /> .. in truckloads = Loading in(moist tons/acre)/(tons of sludge-sand mix/truckload) <br /> 0.5 truckloads/acre <br /> Per-field Loading <br /> Rale for Sludge- <br /> Sand Mix = Per-acre Loading x Field Size <br /> 985 moist tons/field <br /> ... in truckloads = Truckloads/ac x field size(ac) <br /> 43 truckloads/field <br /> (E)Other Nutrient and Metals Loading Rates,Loading Limits,and Site Lifetime <br /> for an Example Field <br /> Other Nutrient = Content in sludge(mg/kg)x(100-%sand) / 100 x 907(kg/ton)/454000(mg/lb) <br /> and Heavy x Sludge loading mte(tons/acre)x(%Solids)/100 <br /> Metals Loadings <br /> (lbs/acre) <br /> Approximate = Cumulative Loading Limit/Current Loading Rale <br /> Site Lifetime, <br /> Based on Current <br /> Application Rate <br /> Loading Limit Approx. <br /> Criteria Site Life <br /> Current Annual at Current <br /> Loading Rate Annual Cumulative Rates <br /> Constituent (lbs/acre) (lbs/acre) (lbs/acre) (years) <br /> phosphorus — 554 na na na <br /> Potassium — 59 na na na <br /> Cadmium — 0.07 0.45 17.8 244 <br /> Copper = 12 na 446 36 <br /> Lead = 1.48 na 714 484 <br /> Nickel — 1.02 na 179 176 <br /> Zinc — 37 na 893 24 <br /> Ina = not applicable <br /> Xts Telephone 209/836-1650 3900 Holly Drive Tracy, California 95376 <br />