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Table 5 <br /> Summary of Contaminant <br /> Mass Balance Calculation <br /> CCI'Stockton Railyard <br /> 1645 Cherokee Road <br /> Stockton,California <br /> ESTIMATED TPH-D REMOVED <br /> Impacted Soil Removed <br /> Estimated Impacted Soil Excavated Volume <br /> Excavation Dimensions <br /> Radius Depth <br /> 100 ft 80 ft <br /> Soil Mass Removed* Average Concentration Total TPH-d <br /> (tons) (mg/kg) (lb/lb) (lbs) <br /> 10,403 80. .8E:0 8 <br /> Impacted Groundwater Removed <br /> Total Soil Volume Saturated Soil Volume Groundwater Average Cone. Total TPH-d Total <br /> (cubic ft) (cubic ft) (liters) ( L) (lbs) (gallons) <br /> 2oo,629 639,134 5,211 73 tt <br /> IMPACTED TPH-D REMAINING <br /> Impacted Soil Remaining <br /> Estimated Impacted Remaining Soil Volume(After Excavation) <br /> Area(square ft) Contaminant Thickness(ft) <br /> 4,500 5 <br /> Soil Volume Soil Mass Soil Mass Average Concentration Total TPH-d <br /> (cubic ft) (tons) (lbs) (m k ) (lb lb) (lbs) <br /> 22,500 1,167 2,333,3330.62 6.22E-o 1. <br /> Impacted Groundwater Remaining <br /> Estimated Impacted Groundwater Volume(Groundwater Contaminant Contour) <br /> Radius of GW Contour(ft) Average DTW(fbg) Contaminant'I'hiekness <br /> (ft) <br /> 110 53 12 <br /> Groundwater Volume Groundwater Average Cone. Total TPH-d Total <br /> (Cubic ft) (liters) ( L) (lbs) (gallons) <br /> 136,848 3,875,319 456 4 0-57 <br /> Notes: <br /> ug/L=Micrograms per liter <br /> mg/kg=Milligrams per kilogram <br /> lbs =Pounds <br /> yids =Yards <br /> It =Feet <br /> tbg =Feet below ground <br /> DTW=Depth to water <br /> 'rpti-d =Total petroleum hydrocarbons as diesel(CIO-C28) <br /> = Value from 2006 Remedial Action Report prepared by CIS Environmental Services. <br />