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. APPENDIX E <br /> Page 2 of 3 <br /> b and c = short, intermediate and long <br /> semi-axes <br /> Where a, <br /> 4 <br /> The weight(wt)of PHI soil can be calculated by <br /> wt gasoline= 125 IblW- i+Vz)'C <br /> Where lb/ft' = pounds per cubic foot In soll in milligrams per <br /> C =concentration of gasoline (TPH-g} <br /> kilograms (mg/kg) <br /> The following calculations for the remaining petroleum hydrocarbon-Impacted soil were made <br /> Area A <br /> Area of impacted soil beneath excavation in Area A= 1553 ftZ <br /> Thickness =2 0 ft <br /> Semi-axial dimensions of impacted area southeast of excavation a=2 0 ft, b = 7 2 ft, c = 15 9 ft <br /> Volume of PHI soil (Area A)= 1514 ff <br /> . Average concentration of TPH-g= 1,425 mg/kg <br /> Weight of gasoline In Area A=265,lb TPH-g <br /> Sample Calculations <br /> wt gasolme= 125 to/ft•(V i + V2)•C <br /> = 125 lb/ft'-(t/3-A-h T 33•,toa-b•c)•C <br /> = 125 lb/ft'-(1035 ft=+ 479 ff)^1,425 mg/kg <br /> =2651b TPH-g <br /> Area B <br /> Area of impacted soil beneath excavation in Area B = 2280 ftZ <br /> Thickness=3 0 ft <br /> Semi-axial dimensions of impacted area southeast of excavation a=2 2 ft, b = 13 3 ft,c =21 5 ft <br /> Volume of PHI soil (Area B -Area A)= 2,938 ft} 1,514 ft'= 1,424 ft'. <br /> Average concentration of TPH-g=550 mg/kg <br /> Weight of gasoline in Area B =98 lb'.TPH-g <br /> Advanced GCOEnv,eaamen[91,Inc <br />