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Table 4, Postapplicatiou Report(continued) <br /> Sludge Loading Calculations <br /> (D)Sludge/Saud Mix Loading Liwits for an Example Field <br /> Alfalfa N Demand = 375 lbs/acre <br /> Track and Trailer = 51000 lbs/load = 25.5 tons/load(wet basis) <br /> 41 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 /> Rate 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 /> 39 truckloads/field <br /> _.__. _.__........... <br /> ..s, ., . . . ..:...::.. <br /> (E)Other Nutrient mrd Metals Loading Rates,Loading Limits,and Site Lifetime, <br /> for an Exawple Field <br /> Other Nutrient = Content in sludge(mg/kg)x(100-%sand) / 100 x 907(kg/ton)/454000(mg/Ib) <br /> and Heavy x Sludge loading rale(lons/acre)x(%Solids)/ 100 <br /> Metals Loadings <br /> Obs/acre) <br /> Approximate = Cumulative Loading Limit/Current Loading Rate <br /> Site Lifetime. <br /> Based on Current <br /> Application Rale <br /> Loading Limit Approx. <br /> Criteria Site Life <br /> Current Annual at Current <br /> Loading Rate Annual Cumulative Rates <br /> Constituent Obs/acre) Obs/acre) Obs/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 /> na = not applicable <br /> PSETIA S 9/1/94 <br />