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I � <br /> j NOV05 <br /> CONTAMINANT MASS CALCULATIONS <br /> Knowles Property, 1140 W. Hammer Lane <br /> Mass in soil. <br /> ;t Based on estimated extent shown on attached figure. <br /> mass = (Volume of impacted zone)(soil density)(Average Concentratlon)(E-6); <br /> I Volume in cu. ft.; thickness of impacted zone is 7 ft. around pipeline and 5 ft. elsewhere; <br /> Soil density assumed 45.5 kglcu:ft. (100lb1cu. ft.); <br /> Average concentration derived from all results within or bordering zone. <br /> I <br /> Area Volume Average Mass of Mass of <br /> Contaminant Concentration Contaminant Contaminant <br /> (sq-ft.) (cu.ft.) (mglkg) (kg) (lbs) <br /> TPHG Zone 1, 35-55' bgs 140 2800 4100 522.3 1149.1 <br /> TPHG Zone 2, 35-55' b s 350 7000 460 146.5 322.3 <br /> TPHG Zone 3, 35-55' b s 50 1000 55 2.5 5.5 <br /> f Total mass of TPHG between 35-55' 671.4 1477.0 <br /> TPHG Zone 1, 55-65' b s 0 0 0 0.0 0.0 <br /> TPHG Zone 2, 55-65' b s 315 3150 261 37.4 82.3 <br /> TPHG Zone 3, 55-65' b s 950 9500 55 23.8 52.3 <br /> Total mass of TPHG between 55-65' 61.2 134.6 <br /> l TPHG Zone 1, 65-85 b s 0 0 0 0.0 0.0 <br /> TPHG Zone 2, 65-85' b s 0 0 0 0.0 0.0 <br /> jj TPHG zone 3, 65-85' b s 150 3000 25 3.4 7.5 <br /> R ' Total mass of TPHG between 65-85' 3.4 7.5 <br /> Total Estimated Mass of TPHG in Soil 1619 <br /> 'I <br /> I` <br /> f 1t i <br /> ],If <br /> k <br /> ! Page 1 <br />