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IThe calculated average TPH-d concentration was 5,620 mg/kg, which is equivalent to 0 00562 grams(g)/g Converting 5l yd3 of petroleum hydrocarbon-impacted soil to cubic centimeters(cm3)(i e 1 yd3=764,555cm3) yields approximately 38,992,305 cm` Using 1 5 g/cm3 as the weight of soil,the total weight of contaminated soil is approximately 584,488,458 g ' Using 0 00562 g/g as the "average"concentration of TPH-d in soil, the volume of TPH-d is weight of soil •average TPH-d concentration 4 584,488,458 g •0 00562 g/g=328,705 g TPH-d 725 pounds of TPH-d Converting grams of TPH-d to volume (gallons)using density of TPH-g(0 84 g/cm3) I 328,705 g TPH-d—0 84 g/cm3=391,315 cm3 391,315 cm3 •(1 gallon—3,785 cm3) = 103 gallons of TPH-d Volume B. MW 1-15- 130 milligrams per kilogram(mg/kg) MW 1-25 -43 mg/kg ' B5-5- 160 mg/kg B5-10- 530 mg/kg , 135-15 -970 mg/kg ' 135-20- 79 mg/kg The calculated average TPH-d concentration in Volume B was 319 mg/kg,which is equivalent to 0 000319 gram(g)/g �f Converting 4,652 yd'of petroleum hydrocarbon-impacted soil to cm3[i e 1 yd'=764,555 centimeter{cm3}] yields approximately 3,556,709,860 cm3 Using 1 5 g/cm3 as the weight of soil,the total weight of contanunated ' soil is approximately 5,335,064,790 g Using 0 000319 g/g as the"average"concentration of TPH-d in soil, the volume of TPH-d is ' weight of soil •average TPH-d concentration—1� 5,335,064 g •0 000319 g/g= 1,701,885 g TPH-d 3,752 pounds of TPH-d ' Converting grams of TPH-d to volume (gallons) using density of TPH-g(0 84 g/cm') 5,335,064 g TPH-d—0 84 g/cm'=6,351,267 cm3 ' 6,351,267 cm3 •(1 gallon—3,785 cm3) z� 1,678 gallons of TPH-d Total mass of TPH-d remaining-4 mass of Volume A+mass of Volume B=725 pounds f 3,752 pounds ' =4,477 pounds TPH-d Total volume of TPH-d remaining-4 Volume A i-Volume B= 103 gallons+1,678 gallons=1,781 gallons TPH-d. I ' Advanced GeoEnvironmental,Inc