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41 <br /> Table E-1 Mass of Soil Contamination <br /> impacted De>th Interval Im acted Area Average <br /> Contaminant <br /> Shallowest Deepest Length Width Bulk Density of Soil Concentration Mass <br /> Area ft b s ft b s ft ft (lbslcf) m;;N or m (lbs) <br /> D-1 TPH 4 9 55 75 110 3300 7486875 <br /> D-1 MtBE 4 9 55 75 110 041 0009302 <br /> D-2 TPH 4 9 4 7 5 110 9800 1617 <br /> D-2 MtBE 4 9 4 7 5 110 0 1 000165 <br /> D-4 TPH3 9 4 7 5 110 33 15 065637 <br /> D-4 tBE 3 9 4 7 5 110 132 0026136 <br /> Note <br /> Mass=(deepest—shallowest)x length x width x bulk density of soil x average contaminant concentration— 1,000,000 <br /> bgs = below ground surface <br /> cf = cubic feet <br /> ft = feet <br /> lbs = pounds <br /> mg/kg = rmlligrams per kilogram <br /> MtBE = methyl tert-butyl ether <br /> ppm = parts per million <br /> TPHg = total petroleum hydrocarbons as gasoline <br />