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Table 3: Mass Balance Calculations(TPH-G) <br /> George's Service <br /> 1600 Durham Ferry Road <br /> Project No.425.2 <br /> matrix width length area volume density"' conv. cont.load conv. cont <br /> zone type depth-ft thickness (ft) (ft) (ft) ft3 lbs/ft3 lbs/kg mglkg mg/kg kg <br /> #1 (core) silt 0-12.5 12.5 24.5 35 699 8737.5 103.4 0.4536 12,275 0.000001 5030.40 <br /> #2 silt 0-17.5 17.5 94.5 105 8205 134850 103.4 0.4536 43 0.000001 271.96 <br /> matrix width length area* volume vol of H2O*** vol H2O cont.load**** cont load cont. <br /> zone type depth-ft thickness (ft) (ft) (ft) ft3 ft3 liters mg/L kg/L kg <br /> #1 water 0-23 23 475 10925 4219 119475 84.8 0.0000848 10.13 <br /> #2 water 0-23 23 1789 30222 11672 330506 67.5 0.0000675 22.3 <br /> #3 water 0-23 23 3592 41469 16015 453503 37.5 0.0000375 17.0 <br /> #4 water 0-23 23 7548 90988 35140 995040 17.5 0.0000175 17.41 <br /> #5 water 0-23 23 14081 150259 58030 1643225 1.79 0.00000179 2.94 <br /> #6 water 0-23 23 17620 81397 31436 890153 0.55 0.00000055 0.49 <br /> #7 water 0-23 23 19118 34454 13306 376787 0.0625 6.25E-08 0.02 <br /> total kg= 5372.68 <br /> Ib= 11846.75 <br /> gal= 1910.77 <br /> Soil contaminant mass to be removed by excavation <br /> excavation matrix excavation width length area* volume density** conv. cont.load conv. cont. <br /> zone type depth-ft thickness (ft) (ft) OIL) ft3 lbs/ft3 lbs/kg mg/kg mg/kg kg <br /> #1 (core) silt 15 15 358 5370 103.4 0.4536 12,275 0.000001 3091.64 <br /> #2 silt 15 15 593 3525 103.4 0.4536 43 0.000001 7.11 <br /> total kg= 3098.75 <br /> Ib= 6832.70 <br /> Notes, gal= 1102.0 <br /> '=Area calculated by CAD software. <br /> '*=Sample MW-202 @ 66',sandy clay 7/1/98(most similar sample) <br /> "*Vol. H2O=volume of zone x porosity(assume 38.62%-sample MW-202 @ 66') <br /> .."average zone concentration <br /> 09/25/2000 <br />