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ESTIMATED HYDROCARBON MASS <br /> (IMPACTED SOIL) REMOVAL <br /> Based on the hydrocarbon concentration of total petroleum hydrocarbons quantified as diesel and <br /> motor oil (TPH-d/mo)in excavated fuel dispensing system removal excavation samples,soil bonng <br /> samples and the average concentration of TPH-d/mo in soil at the base of the over excavation, the <br /> following calculation for the removed TPH-g mass has been made <br /> The impacted samples from the soil borings, line removal and excavation had the following <br /> TPH-d/mo concentrations in micrograms/kilogram (mg/kg) <br />' TPH-d TPH-mo <br /> Depth South North East West CenterAve South North East West Center Ave <br />' Wall Wall Wall Wall Wall Wall Wal! I Wall <br /> 3 <10 <10 <10 <10 2,300 460 510 <10 <10 15 4,000 905 <br />' 5 <10 <10 <10 <10 900 180 5109 <10 <10 15 2,800 665 <br /> 10 <10 <10 <10 <10 1,700 340 510 <10 <10 15 3,300 765 <br />' 15 <10 <10 <10 <10 290 58 510 <10 <10 <10 320 166 <br /> 20 <10 <10 <10 <10 1,400 280 78 <10 <10 <10 600 198 <br />' 25 <10 <10 <10 <10 <10 <10 420 <10 <10 <10 <10/320 123 <br /> Total 220 -7 , 1 470 <br /> Ave <br />' =Data extrapolated from nearest sample <br /> This mass reduction was calculated from soil sample data and the weight of the soil from the <br />' excavations A total of 275 yards of impacted soil were removed with an average concentration of <br /> 2.20 mg/kg of diesel and 470 mg/kg of motor oil <br />' weight to mass (diesel) <br /> 275 yards or 413 tons removed • 2,000 pounds/ton= 825,000 pounds soil <br /> 825,000 pounds soil • 0 454 kilograms/lbs= 374,550 kilograms soil <br /> 374,550 kilograms soil • 220 mg/kg of diesel = 82,401,000 milligrams of diesel <br /> 82,401 grams of diesel <br /> = 82 kilograms of diesel <br />' weight to mass (motor oil) <br /> 275 yards or 413 tons removed • 2,000 pounds/ton= 825,000 pounds soil <br /> 825,000 pounds soil • 0 454 kilograms/lbs = 374,550 kilograms soil <br />' 374,550 kilograms soil • 470 mg/kg of motor oil = 176,038,500 milligrams of motor oil <br /> = 176,038 grams of motor oil <br /> = 176 kilograms of motor ail <br />' volume <br /> 82,401 grams of diesel — 0 85 grams/cm3 = 96,942 cm3 of diesel <br /> (96,942 cm3 of diesel —3,785 CM3/gallon) = 26 gallons of diesel removed <br /> 176,038 grams of motor oil — 0 85 grams/cm3 = 207,104 cm3 of motor oil <br /> (207,104 cm3 of motor oil — 3,785 CM3/gallon) = 55 gallons of motor oil removed <br />' Advanced GeoEnvwonmental,Inc <br />