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TABLE G-1 Page 1 of 1 <br /> ESTIMATED TPHg MASS IN SOIL <br /> SHELL-BRANDED SERVICE STATION <br /> 2494 EAST FREMONT STREET <br /> STOCKTON,CALIFORNIA <br /> Impacted Soil Impacted Soil Impacted Soil Soil Volume Representative TPHg Estimated Soil Total Impacted TPHg Mass in Soil TPHg Volume in Soil <br /> Thickness Interval Area Concentration Bulk Density Soil Mass (lb) (gallons) <br /> (ft) (fbg) (sq-ft) (cu-ft) (mg/kg) (lb/cu-ft) (lb) <br /> 5.0 5-10 34 170 550 89.9 15,283 8.4 1.4 <br /> 5.0 5-10 18 90 1,320 89.9 8,091 10.7 1.7 <br /> 5.0 5-10 56 280 550 89.9 25,172 13.8 2.3 <br /> 5.0 5-10 60 300 3,900 89.9 26,970 105.2 17.1 <br /> 10.0 >10-20 58 580 550 89.9 52,142 28.7 4.7 <br /> 10.0 >10-20 46 460 4,410 89.9 41,354 182.4 29.7 <br /> 10.0 >20-30 71 710 550 89.9 63,829 35.1 5.7 <br /> 10.0 >20-30 36 360 1,500 89.9 32,364 48.5 7.9 <br /> 12.0 >3042 107 1,284 550 89.9 115,432 63.5 10.3 <br /> 12.0 >3042 143 1,716 2,400 89.9 154,268 370.2 60.3 <br /> TPHg Mass in Soil: 833.6 135.8 <br /> Notes: <br /> Soil Volume=Impacted soil thickness x impacted soil area[excludes soil volume of greater impact] <br /> Total Impacted Soil Mass=Soil Volume(cu-ft)x Bulk Density(lb/cu-ft) <br /> Residual TPHg Mass=Impacted soil mass(lb)x Concentration(mg/kg)/1,000,000(mg/kg) <br /> TPHg Mass to TPHg Volume=Mass TPHg(lbs)/6.14(lb/gal) <br /> Bulk(Dry) <br /> Abbreviations: Soil Tyne: Density(lb/cu ft): <br /> TPHg=Total Petroleum Hydrocarbons as Gasoline Sand 94.8 <br /> ft=feet Sandy loam 89.9 <br /> fbg=feet below grade Loam 84.9 <br /> cu-ft=cubic feet Silt loam 79.9 <br /> kg=kilograms Clay loam 79.9 <br /> mg/kg=milligrams per kilogram Clay 74.9 <br /> sq-ft=square feet Peat 25.0 <br /> lb=pounds <br /> Derived from:Hydrology for Engineers;Linsley,Kohler&Paulhus,1982,McGraw-Hill,Inc.pg.179. <br /> CRA 240797(18) <br />