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1�GaiSY `rye-/yW M <br /> F" <br /> TABLE 2 2�13 <br /> CONTAMINANT MASS CALCULATIONS <br /> Williams Tank Lines Fuel Tanker Spill - Mariposa Road ENVIRIO N%11 ENTAL <br /> 22934 E. Mariposa Road hiF-ALTH DEPA TtviEAT <br /> Escalon, California <br /> Concentration Avg. TPHg Area' Thickness Volume Mass Gallons <br /> Interval Concentration <br /> (mg/kg) (mg/kg) (ft2) (ft) (Yds3) (lbs) (Gal) <br /> Total TPHgMass Remaining from Soil <br /> EX13-1 & EXS-1 <br /> >1.0 1.2 101 5 18.7 0.1 0.01 <br /> Sum - 0.1 <br /> EXB-2 <br /> >100 280 51 5 9.4 7.5 1.2 <br /> 100- 10 100 58 5 10.7 3.0 0.5 <br /> 10 - 1.0 10 59 5 10.9 0.3 0.0 <br /> Sum = 10.9 <br /> EXS-1 <br /> >1.0 1.9 34 5 6.3 0.0 0.0 <br /> Sum = 0.0 <br /> Total Mass of TPHg (lbs)= 10.9 <br /> Total Mass of TPHg (Gal)= 1.7 <br /> Notes: <br /> Areas calculated with Autocad <br /> bgs- Below ground surface <br /> ft- Feet <br /> ft2- Square feet <br /> lbs- Pounds <br /> mg/kg - Milligrams per kilogram <br /> TPHg-Total petroleum hydrocarbons as gasoline <br /> Yds3- Cubic yards <br /> Mass removed(Ibs)= Concentration(mg/kg)*Area(ft2)*Thickness(ft)'Density <br /> (105 Ibs/ft3)* 1 kg/1,000,000 mg <br /> APEX ENVIROTECH,INC. <br /> PETROLEUM TANKER SPILL RESPONSE,SOIL EXCAVATION, <br /> COr1=iRMATION SOIL SAMPLE RESULTS REPORT <br /> Page 1 of 1 WI1-02.003 <br />