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i <br /> APPENDIX F <br /> •� AGE-NC-Project No 99-0592 <br /> Page 3 of 3 <br />' 4) Following the above format, the approximate volume of soil to the boundary of the fourth zone <br /> (V4) <br />' V4= (457 ft2)(11 ft) + (552 ft2)(7 ft) 5,027 3 + 3,864 ft3 -+ 8,891 ft3 <br /> V4=V4 - V3 4 8,891 ft3 - 4,658 ft3 4,233 ft; <br />' Using 55 mg/kg as the average concentration of gasoline in the inner zone,the weight of gasoline <br /> is <br /> V4 • typical weight of soil • average concentration of contaminant -l► <br />' 4,233 ft3 • 125 lbs/ft3 - 0 000055 -0 29.1 lbs of gasoline <br /> 5) The approximate volume of soil to the boundary of the fifth (outer) zone (V5) <br />' V5 = (597 ftz)(15 ft) + (744 ft2)(8 ft) -0, 8,955 ft3 + 5,952 ft3 -4 14,907 ft3 <br />' • V5 —V5 -V4 -4 14,907 ft3 - 8,891 ft3 -4 6,016 ft3 <br /> Using 5 5 mg/kg as the average concentration of gasoline in the inner zone, the weight of gasoline <br />' is <br /> V5 • typical weight of soil • average concentration of contaminant -0 <br /> 6,016 ft• 125 lbs/ft3 • 0 0000055 -3+ 4.1 lbs of gasoline <br /> 1 All together, the weight of gasoline from zones 1, 2, 3, 4 and 5 is <br /> 192 3 lbs + 1,348 2 lbs + 175 0 lbs -+- 29 1 lbs + 4 1 lbs --1' 1,749 lbs of gasoline <br />' n pounds of gasoline to volume (gallons) using density of gasoline equal to 6 25 lbs/gal <br /> Convert you g {g } g <br />' 1,749 lbs — 6 25 lbs/gal -+ 279.8 gallons of gasoline <br />' Combining the total volume of gasoline at the different concentrations, impacted soil yields a grand <br /> total of approximately 14,907 ft3 containing an estimated 279 8 gallons of gasoline, or equivalent <br />' to 1,749 pounds of gasoline <br /> l� <br />' Advanced GeoEnvironmentai,Inc <br />