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1 <br /> Adsorbed Gasoline Mass-Volume Calculations <br /> GREWAL'S MARKET <br />' 4100 East Fremont Street, Stockton CA <br /> GASOLINE-IMPACTED AREA GREATER THAN 1 MG/KG-Approximate volume of gasoline-impacted soil <br /> (VGASI),. <br />' The estimated cylindrical ellipse shape for gasoline-impacted area greater than 1 mg/kg,above 35to 40 feet bsg:a=45 <br /> ft,b = 18ft,c = 22.5 ft <br /> VGAS,a=(45 ft)(18 ft)(0.7854)(22.5) -4 14,307 ft' (1yd3/27ft) = 530 yd' <br /> VGASIa'— VGAsi —VGAsi000♦530 yd-'-29 yd3=501 yd' <br />' The estimated cylindrical ellipse shape for gasoline-impacted area greater than 1 mg/kg,below 40 feet bsg: a= 150 ft, <br /> b = 33 ft,c z 7.5 ft <br /> VGAS1b=(150 ft)(33 ft)(0.7854)(7.5) -4 29,143 ft' (lyd3/27ft) = 1,079 yd, <br /> VGASIab'= VGASIa+VGASIb 4 1,079 yd3+501 Yd'= 1,580 yd' <br /> I Converting 1,580 yd3 to cm'(i.e. lyd'=764,555cm3)yields approximately 1,208,283,608 cm3.Using 1.9 gkrn3 as the <br /> weight of soil,the total weight of contaminated soil is approximately 2,295,738,855 g. <br /> ' Using 165 mg/kg as the "average"concentration in the area of TPH-g impacted soil,the mass can be calculated to be: <br /> weight of soil• average concentration —!2,295,738,855 g -0.000165=378,797 g of gasoline <br /> Converting grams of gasoline to volume of gasoline(gallons)using density of gasoline equal to 0.75 (estimate) <br /> 378,797 g of gasoline-0.75 g/cm3=505,062 cm' <br /> I505,062 cm3 •(1 gallon-3,785 cm') = 133 gallons of gasoline <br /> Converting gallons of gasoline to pounds of gasoline yields: <br /> 133 gallons of gas_0.16 gal(estimate)of gas/lbs. of gas = 834 pounds of gasoline <br /> Combining the total volume of gasoline-impacted soil yields a grand total of 1609 yd' containing an estimated <br /> 1,007 pounds of gasoline, or 161 gallons of gasoline. <br /> 1 <br /> • Advanced GeoEnvironmental,Inc. <br /> 1 <br />