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TABLE 5 <br /> SUMMARY OF ANNUAL SLUDGE NITROGEN APPLICATION <br /> City of Manteca <br /> Avg. Sludge Production Total (a) Land Unit N <br /> Flow Nitrogen Used Load <br /> Year (mgd) (lbs) (lbs/ac) Load (lbs (Acres) (lbs/ac) <br /> 1984 2.81 1,710,784 8,147 14,535 210 69 <br /> 1985 3.13 1,905,607 9,074 16,201 210 77 <br /> 1986 3.45 2,100,429 10,002 17,850 210 85 <br /> 1987 3.59 2,185,664 10,408 18,581 210 88 <br /> 1988 3.55 2,161,311 10,292 18,360 210 87 <br /> 1989 4.18 1,272,434 6,059 10,812 210 51(b) <br /> 1990 4.46 1,357,669 6,465 11,543 210 55(b) <br /> (a) Nitrogen load was calculated using 1991 actual sludge stock pile data of 17 lbs-N/ton <br /> (A&L Western Agricultural Laboratories, 7/21/91). <br /> (b) Equivalent nitrogen load (from sludge) applied over 210 acres. Actual nitrogen applied <br /> from sludge in 1989 and 1990 were 110 lbs/acre and 170 lbs/acre, respectively. Land use <br /> in 1989 and 1990 correspond to 98 acres and 68 acres, respectively. <br />