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Telephone 209/836-1650 3900 Holly Drive Tracy, California 95376 Preapplication Report: 93-94 Sludge Loading Calculations (A) Lab Results and Field Estimates (for sludge without sand, except where noted) Total Kjeldahl N = 29,200 mg/kg (dry basis) Ammonia N = 2,618 mg/kg (dry basis) Nitrate N = 44 mg/kg (dry basis) Total Phosphorus = 23,560 mg/kg (dry basis) Potassium = 2,503 mg/kg (dry basis) Cadmium = 3.1 mg/kg (dry basis) Copper = 522 mg/kg (dry basis) Lead = 63 mg/kg (dry basis) Nickel = 43 mg/kg (dry basis) Zinc = 1,560 mg/kg (dry basis) % Solids = 95.5 % Bulk Density = 0.71 g/cc (wet basis) = 1,200 lbs/cubic yard (wet basis) Sand Was Mixed into Applied Sludge; Characteristics of the Mixture: % Sand = 0.0 % of the wet weight Total Volume = 2,600 cubic yards Bulk Density Mix = 0.71 g/ce (wet basis) = 1,200 lbs/cubic yard (wet basis) .......................................................................................................................................................................................................................... (B) Nitrogen Concentration Calculations Organic N = (Total Kjeldahl N - Ammonia N) x (% Solids) / 100 Concentration = 25,386 mg/kg (wet basis) in Sludge Available N = Ammonia N x % Solids / 100 + Nitrate N x % Solids / 100 + 0.5 * Organic N Concentration = 15,235 mg/kg (wet basis) in Sludge Available N = Available N x (100 - %sand) / 100 Concentration = 15,235 mg/kg (wet basis) in Sludge -Sand = 30.4 lbs of available N/ton (wet basis) Mix ................................................................................................................. ....... ........... .......... .......... . (C) Total Weight of Sludge/Sand Mix and Nitrogen in Stockpile Total Weight = Total Yardage x Bulk Density Mix / (2000 lbs/ton) = 1560 moist tons of mix Total Available N = Total Weight x Available N Concentration in Mix = 47491 lbs of available N Telephone 209/836-1650 3900 Holly Drive Tracy, California 95376