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HYDROCARBON (DIESEL)-IMPACTED SOIL <br /> VOLUME ASSUMPTIONS AND CALCULATIONS <br /> Grant Line Gas &Food <br /> 2420 Grant Line Road, Tracy, California <br /> Volume of impacted soil <br /> An estimate of the areal extent of impacted soil surrounding the former UST area is made from <br /> Isamples collected from boring B3, B5, B7 and B9 and wells MW 1 and MW8 <br /> Based on the distance between the borings and wells, a distance of 80 feet is utilized as an `average' <br /> radius of the hydrocarbon plume for the following calculation The vertical distribution of the <br /> impacted soil appears to be between 5 and 10 feet in depth bsg This volume was calculated from <br /> soil sample data <br /> Vg= nr- •h -4 Tc(80ft) • 5 ft z 100,530 ft' 27 ft3/yd3 z 3,723 yd3 <br /> Converting 3,723 yd3 to cm3 <br /> 3,723 yd • 7 6455 x 10' cm3/yd3= 28 5 x 108 cm3 <br />' yields approximately 28 5 x 103 cm3 Using 1 5 g/cm3 as the weight of soil, the total weight of <br />' • contaminated soil is approximately 42 75 x 108 grams <br /> Calculating an average concentration from sail samples collected from a depth of 5 feet bsg to 10 <br /> feet bsg, a value of 14 milligrams per kilogram as the "average" concentration of total petroleum <br />' hydrocarbons quantified as gasoline Thus value will be used for soils in the calculated area from 5 <br /> feet bsg to 10 feet bsg, the mass is <br />' weight of soil • average concentration -442 75 x 108 grams • 0 000014 g of diesel <br /> = 59,850 g of diesel <br />' Converting grams of gasoline to volume of diesel (gallons) using density of 0 84 <br />' 59,850 g of diesel - 0 84g/cm3 = 71,250 cm3 <br /> 71,250 cm3 • (1 gallon- 3,785 cm) Z 19 gallons of diesel <br /> 1 <br /> 1 <br /> • Advanced GeoEnvrronmenial,Inc <br /> 1 <br /> 1 <br />