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' Adsorbed MTBE MassNolume Calculations - Continued PACIFIC PRIDE - WEST LANE 3230 North West Lane, Stockton CA ' MTBE-IMPACTED AREA NO 2) Approximate volume of MTBE-impacted soli(VMTBENo z) VMTaeNo ,=(3 14)(10 ft)'(34ft)/2 -4 5,340 ft3 (lyd3/27ft) = 198 yd' ' Converting198 yd3 to cm3(i c 1 yd3=764,555cm3)yields approximately 151,381,890 cm3 Using 1 9 g/cm3 as the weight of soil,the total weight of contaminated soil is approximately 287,625,591 g ' Using 5 5 mg/kg as the"average"concentration in the area of MTBE-impacted soil, the mass can be calculated to be weight of soil -average concentration -+287,625,591 g -0 0000055= 1,582 g of MTBE ' Converting grams of gasoline to volume of MTBE(gallons)using density of MTBE equal to 0 74 (estimate) ' 1,582 g of MTBE—0 74 glome=2,138 cm3 2,138 cm3 -(1 gallon—3,785 cm3) = 0.57 gallons of MTBE ' Converting gallons of MTBE to pounds of MTBE yields 0 57 gallons of MTBE—0 16 gal(estimate) of MTBE/lbs of MTBE = 3 53 pounds of MTBE 1• MTBE-IMPACTED AREA NO 3) Approximate volume of gasoline-Impacted soil(VnTnE No 31) ' VMTseNo 3=(1 047)(5 ft)2(11 ft)/2 4 144 ft' (lyd/27ft) = 5 33 yd' ' Converting5 33 yd3 to cm3(i e lyd3=764,555cm3)yields approximately 4,077,627 cm3 Usmg 1 9 g/em as the weight of soil, the total weight of contaminated soil is approximately 7,747,491 g ' Using 4 1 mg/kg as the"average"concentration in the area of MTBE impacted soil,the mass can be calculated to be weight of soil -average concentration -4 7,747,491 g 0 0000041 =31 8 g of MTBE IConverting grams of MTBE to volume of MTBE(gallons) using density of MTBE equal to 0 74(estimate) 31 8 g of MTBE—0 74 g/cm3 =43 cm3 43 cm3 -(1 gallon—3,785 cm) = 0.011 gallons of MTBE , Converting gallons of gasoline to pounds of gasoline yields jl I0 011 gallons of MTBE—0 16 gal(estimate) of MTBE/lbs of MTBE 0 07 pound of MTBE f I Advanced GeoEnvironmental,Inc I I