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Assumptions <br /> 1 average diesel concentration is 12,036 ppm for impacted area (as seen in soil <br /> boring SS-3 <br /> 2 length (1) and width (w) of impacted area is 6 feet by 12 feet and consistent <br /> with known data points <br /> 3 height (h) of impacted area is 6 feet as measured from approximately 6 feet <br /> beneath the base of the mplace 300 gallon tank. <br /> Volume of impacted soil calculation <br /> lxwxh = v <br /> 1 = length of area in feet <br /> w = width of area in feet <br /> h — height of area in feet <br /> v — volume of area in cubic feet <br /> 6 ft x 12 ft x 6 ft = 432 ft3 <br /> Maximum volume of residual diesel in soil <br /> where <br /> C <br /> V = volume of impacted soil in cubic feet <br /> D = average in place diesel concentration in parts per million <br /> G = conversion factor - number of gallons per cubic foot <br /> R = average residual diesel remaining in gallons <br /> 432 ft' x 0 012036 diesel content x 7 48 gallons/i ft' = 38 9 gal <br /> Note The area used for calculation of the residual diesel is based on analytical results The <br /> average residual in situ diesel fuel concentration is an average of all analytical concentrates <br /> within the assumed impacted area This calculation should be considered an order of <br /> magnitude estimate only <br /> MZJ04-06-95/UST/95-0089 8 <br /> f <br />