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TABLE 3 <br /> CALCULATIONS OF MASS EXTRACTED <br /> JAMAR Service Station, <br /> 4075 E.Main Street <br /> Stockton,California <br /> Page 1 of 1 <br /> Time Concentration conv. Flow rate conv. conv. conv. conv, conv. Run Time Mass Removed Extraction Rate <br /> Period Analyte my 1/106 ft?/min min/hr ,it <br /> air/ft' mol/liter grams/mol 1 Ib/454 g total hrs lbs avg lbs per tla <br /> TPH 250.000 0.000001 121 60 28.32 0.040816 86.27 0.002203 746.8 297.52 9.56 <br /> 10/17/2011 Benzene 1.8000 0.000001 121 60 28.32 0.040816 78.11 0.002203 746.8 1.94 0.06 <br /> through Toluene 17.000 0.000001 121 60 28.32 0.040816 92.13 0.002203 746.8 21.61 0.69 <br /> 4/5/2012 Ethylbenzene 12.000 0.000001 121 60 28.32 0.040816 106.16 0.002203 746.8 17.57 0.56 <br /> X lenes 59.000 0.000001 121 60 28.32 0.040816 106.16 0.002203 746.8 86.40 2.78 <br /> Total Removed <br /> PH: 297.52 <br /> Benzene: 1.94 <br /> oluene'. 21.61 <br /> Ethylbenzene: 17.57 <br /> Xylenes 86.40 <br /> Note: <br /> . Mass removed estimated using PID measurements. <br /> For nondetectable concentrations,a value equal to half of the laboratory reporting limit was used. <br />