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Biosolids-N Calc's 2002 <br /> CITY OF MANTECA WQCF <br /> BIOSOLIDS NITROGEN LOADING CALC'S <br /> 2002 SPREADING PRE-APP CALC'S <br /> Application Area 172.51 acres = 69.81 hectares <br /> Biosolids Volume 2100 yds3 <br /> Biosolids Weight 888 DRY lbs/yd3 <br /> Application Rate 10188 DRY lbs/acre = 11419 DRY Kg/ha <br /> BIOSOLIDS-N <br /> BIOSOLIDS NITROGEN' APPLICATION RATE <br /> Percent Kg/ha Ibs/acre <br /> TKN 1.516 173 154 <br /> Ammonia-N 0.316 36 32 <br /> Nitrate-N 0 0.00 0.00 <br /> Organic-N 1.2 137 122 <br /> ORGANIC-N MINERALIZATION RATES2 <br /> Starting Mineralization Mineralized Org.-N <br /> Org.-N Rate Org.-N Remaining <br /> Kg/ha Percent Kg/ha Kg/ha <br /> First Year 137 0.2 27 110 <br /> Second Year 110 0.1 11 99 <br /> Third Year 99 0.05 5 94 <br /> AVAILABLE-N FROM BIOSOLIDS BY YEAR' <br /> TOTAL <br /> Ammonia-N Nitrate-N Org.-N AVAILABLE-N <br /> Kg/ha Kg/ha Kg/ha Kg/ha lbs/ac° <br /> 2002 36 0.00 27 63 57 <br /> 2003 0 0 11 11 10 <br /> 2004 0 0 5 5 4 <br /> 'Biosolids-N data from Geo Analytical Lab Report, Dry Weight basis <br /> 2Organic-N mineralization rates are taken from EPA Land Application of Sewage Sludoe,see following page <br /> 3Assume-N from biosolids is available to crops in the first year following application <br /> °NOTE: Nitrogen mineralized from prior year applications is added to this value. Therefore,values in the report <br /> are higher than shown here. <br />