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HYDROCARBON(GASOLINE)-IMPACTED SOIL <br /> VOLUME ASSUMPTIONS AND CALCULATIONS <br />' Grant Line Gas & Food <br /> 2420 Grant Line Road, Tracy, California <br />' Assumptions <br /> Based on Figures 5, 6 and 7, the volume of gasoline-impacted soil at the site can be approximated <br />' as follows <br /> Lateral extent of impacted soil = 6,533 ft2 <br /> Average thickness of impacted soil = 7 feet <br />' Approximate volume of impacted soil =45,731 ft' yd <br />' Calculations <br />' The average total petroleum hydrocarbon quantified as gasoline (TPH-g) concentration was <br /> estimated by adding TPH-g concentrations and dividing by number of samples The concentrations <br /> averaged to 34 mg/kg which is equivalent to 0 000034 grams <br />' Converting 7,453 yd3 to CM3(i e 1 yd =764,555cm3)yields approximately 1,294,957,712 cm3 Using <br /> 15 g/cm3 as the weight of soil, the total weight of contaminated soil is approximately <br />' 1,942,436,567g <br /> Using the 0 000034 grams as the "average" concentration of TPH-g, the volume of diesel is <br />' weight of soil a average concentration --)� 1,942,436,567 g • 0 000034=66,043 g of diesel <br />' Converting grams of petroleum to volume of petroleum (gallons) using density of gasoline (0 73) <br /> 66043 g of gasoline— 0 73 g/cm3 = 90,469 cm3 <br />' 90,470 cm3 1 gallon— 3,785 cm3 z 24 gallons of gasoline <br /> ( ) g <br /> I <br /> I <br /> 1 <br /> Advanced GeoEnvwanmental,Inc <br /> I <br />