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rs � r r rrr r� ar r� �r rs rr rr �r rs rr rr r <br /> Initial Hydrocarbon Mass in Soil Calculations(1999) <br /> ARCO Station No. 5450 <br /> 1617 W. Fremont Street <br /> Stockton, California <br /> Soil/Vadose Contaminant Interval <br /> Radius of Zone Actual Soil Inscribed Interval Soil Soil Interval Soil Concentration Contaminant <br /> Area Area Thickness Volume Volumes Volume Density Mass in Soil Mass in Soil <br /> (feet) (sq. feet) (feet) Porosity (ft) (ft3)* (ft) (Ibs/ft) (lbs) (ppm) (Ibs) <br /> TPH None Detected <br /> 0.001 0.001 11.001 0.351 0.001 1 0.001 120.00 0.00 0-001 0.00 <br /> Total GRO 0.00 <br /> Eth [benzene <br /> 5.001 78.541 11.001 0.351 561.551 1 561.551 120.001 67,386.461 0.011 0.00 <br /> Total Ethylbenzene 0.00 <br /> Toluene <br /> 5.001 78.541 11.001 0.351 561.55 561.551 120.001 67,386.461' 0.04 0.00 <br /> Total Toluene 0.00 <br /> Xylene* <br /> 5.00 78.54 11-001 0.35 561-551 1 561.551 120.001 67,386.461 0.09 0.01 <br /> 5.00 78.541 11.001 0,351 561.551 1 561.551 120.001 67,386.461 0.04 0.00 <br /> 5.00 78.541 11.001 0.351 561.551 1 561.551 120.001 67,386.461 0.01 0.00 <br /> Total Xylene 0.01 <br /> MtBE <br /> 5.001 78.541 11.001 0.35 561-551 1 561.551 120.001 67,386.461 0.201 0.01 <br /> Total MtBE 0.01 <br /> *Optional for inscribed/concentric concentration intervals to eliminate repeat counting of inner volumes. <br /> ** Xylene data taken from three separate boring locations. <br /> Bold Text in column title indicates user defined fields. <br /> Data taken from the 1999 SECOR Report <br />