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Table 8 <br />' Contaminant Mass Calculation <br /> Earthgrains Baking Companies, Inc. <br /> 2651 South Airport Way <br />' Stockton, California 95206 <br /> October 2004 <br />' Benzene in Groundwater <br />' Parameter 0 to 100 Contour 100 to 1000 Contour Greater than 1000 Contour <br /> Area(sq ft 10,384 1,602 442 <br /> Porosity 035 035 035 <br /> Groundwater Thickness ft 90 90 90 <br /> Gal/c f Conversion 75 75 75 <br /> UGal Conversion 3 785 3 785 3 785 <br /> Avg Benzene Conc u 50 500 1,500 <br /> Mass Conversion 0000000001 0000000001 0000000001 <br /> Benzene Mass (Kg) 04643 07163 05929 <br /> Total Benzene Mass K 17734 <br /> Total Petroleum Hydrocarbons-Gasoline in Groundwater <br />' Parameter 0 to 1000 Contour 1000 to 10,000 Contour Greater than 10,000 Contour <br /> Area(sq ft 10,479 8,536 2,074 <br />' Porosity 035 035 035 <br /> Groundwater Thickness ft 90 90 90 <br /> Galk f Conversion 75 75 75 <br />' UGal Conversion 3 785 3 785 3 785 <br /> Avg TPH Conc ug/kg) 500 5,000 15,000 <br /> Mass Conversion 0000000001 0000000001 0000000001 <br /> TPH Mass (Kg) 46852 381647 278188 <br />' Total TPH-G Mass K 706687 <br /> d+� <br /> Benzene Mass=Area x porosity x g w thickness x 7 5 gaVc f x 3 785 Ugal x avg conc (ug/kg)x 1 E-9 kg/ug <br /> TPH Mass=Area x porosity x g w thickness x 7 5 gal/c f x 3 785 Ugal x avg conc (uglkg)x 1 E-9 kg/ug <br /> Table 8 Contaminant Mass Calcs_2004 04 XLS/Oct 2004 <br />