Laserfiche WebLink
Assumptions <br /> 1 maximum diesel concentration is 900 ppm (as seen by excavation sidewall <br /> sample "wall 3") <br /> 2 length (1) of impacted area is 21 feet as measured from soil sample "wall 2" to <br /> MW-9 <br /> 3 width (w) of impacted area is 10 feet as measured from soil sample "wall V to <br /> MW-8 <br /> 4 height (h) of impacted area is 10 feet as measured from the base of the original <br /> tank excavation to soil sample SB2-20 (collected at 20 feet below grade) It <br /> should be noted that a portion of these area (6' w x 8' 1 x 8' h = 384 ft3) was <br /> overexcavated during recent soil remediation activities in November 1994 and <br /> should be subtracted from the following volume calculation <br /> Volume of impacted soil calculation <br /> I x w x h = v <br /> I = 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 /> 21 ft x 10 ft x 10 ft = 2,100 ft3 <br /> 2,100 ft3 - 384 ft3 (soil overexcavated beneath former tank location) = 1,716 ft3 <br /> Maximum volume of residual diesel in soil <br /> VxDxG = R <br /> where <br /> V = volume of impacted soil in cubic feet <br /> D = maximum in place diesel concentration in parts per million <br /> G — conversion factor - number of gallons per cubic foot <br /> R = maximum residual diesel remaining in gallons <br /> 1,716 ft3 x 0 0009 diesel content x 7 48 gallons/1 ft3 = 11 55 gal <br /> M7101-27-95/UST/95-0011 nbr 10 <br />