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HYDROCARBON-IMPACTED SOI[.
<br /> VOLUME ASSUMPTIONS AND CALCULATIONS
<br /> 1) Volume of contaminated soil at 5 feet bsg to 25 feet bsg
<br /> Vcone 1 =1/317r2h "1 1 0472(30 ft2) • 20 ft = 18, 850 ft' � 698 yd'
<br /> Converting 698 yd' to cm'yields approximately 532,959,257 cm3 Using 1 5 g/cm' as the weight of
<br /> soil, the total weight of contaminated soil is approximately 799,438,885 g
<br /> Using 6,467 mg/kg (parts per million) as the "average" concentration of gasoline from 5 feet bsg.to
<br /> 25-feet bsg, the volume of diesel is
<br /> weight of soil • average concentration -* 799,438,885 g • 0 006467 = 5,169,971 g of diesel
<br /> Converting grams of diesel to volume of diesel (gallons) using density of diesel to equal 0 8 g/cm'
<br /> 5,169,971 g of diesel --- 0 8 9/cm3 = 6,462,464 cin'
<br /> 6,462,464 cm3 • (1 gallon -- 3,785 cm3) rz 1,707 gallons of diesel
<br /> • 2) Volume of contaminated soil at 25 feet bsgt
<br /> o 50 feet bsg
<br /> Vimcitcdcone 2 = 113Hr2h -$ 1 0472(30 ft') • 25 ft = 23,562 ft3 873 yd'
<br /> Converting 873 yd to cm3 yields approximately 666,326,330 cm' Using 1 5 g/cm3 as the weight of
<br /> soil, the total weight of contaminated soil is approximately 999,489,495 g
<br /> Using 4,419 mg/kg (parts per imllion) as the "average" concentration of diesel from 25 feet bsg to 50
<br /> feet bsg, the volume of diesel is
<br /> weight of soil • average concentration 4 999,489,495 g • 0 004419 = 4,416,744 g of diesel
<br /> Converting grams of diesel to volume of diesel (gallons) using density of diesel to equal 0 8 g/cm'
<br /> 4,416,744 g of diesel — 0 8 g/cm' = 5,520,930 cm'
<br /> 5,520,930 cm3 • (1 gallon — 3,785 cm3) = 1,459 gallons of diesel
<br /> 3) Volume of gasoline at 5 feet to 25 feet bsg (V,one,), added to volume of diesel at 25-feet to 50-
<br />. feet bsg (V,pn,2) yields the total volume of gasoline (V,o„e 3)
<br /> Vcone3 = Vconc + 'Vmternacoae 2 �z 1,707 gallons + 1,459 gallons - 3,166 gallons of diesel
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