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Average TPH concentration=Avg Concentration of Samples D-5- <br /> 3 0, DX-E-7 0, and DX-B-8 =91 ppm <br /> (The average concentration is conservative and based on <br /> the assumption that impacted soil was present at 8 feet bgs ) <br /> Mass TPH Removed <br /> in Area 1 = [(V1)X(2,000 lbs/ton)X(91 ppm)]/IE6 <br /> =5.5 pounds <br /> Total Mass of TPH Remediated=5.5 pounds <br /> Summary of Data <br /> Total Original Mass of TPH =6.0 pounds <br /> Total Mass of TPH Remediated =5.5 pounds <br /> Total Mass of TPH Remaining= 0.5 pound <br /> i <br /> 9201026A/MASSBAL DOC June 16, 1997 <br />