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COMPUTATION SHEET <br /> OJECT TITLE ARCO Service Station 6100 PROJECT NO 20805-152 008 <br /> SCRIPTION Mass of Petroleum Hydrocarbons in Soil SHEET 2 OF _ <br /> PREP BY MC DATE Jul 17 98 CHKD BY DATE <br /> Mass of TPHG in the interval between 10 and 25 feet below ground surface <br /> Mass of TPHG = Sod Vol Density lb TPHG/lb soil <br /> (ft3) (pcf) <br /> 1000 ppm contour line <br /> X4-, urry <br /> Mass TPHG = 39420 110 00039 ( � 105 <br /> Mass TPHG= 16911 lbs within the 1000 ppm contour line �-- 1 <br /> a! 0 <br /> 100 ppm contour line <br /> Mass TPHG= 71205 110 000056 <br /> Mass TPHG= 4386 lbs within the 100 ppm contour line <br /> 10 ppm contour line <br /> Mass TPHG= 68205 110 0000037 <br /> Mass TPHG= 278 lbs within the 10 ppm contour line <br /> i <br /> 1 ppm contour line <br /> Mass TPHG= 47925 110 0000037 <br /> Mass TPHG= 195 lbs within the 1 ppm contour Ione <br /> (2,11 -7 0 subtracting the 3096 yd3 volume of the UST excavation yields <br /> I a L� (4 :5 9305 pounds between 10 and 25 ft <br /> Mass of TPHG in the interval between 26 and 45 feet below ground surface <br /> Mass of Soil Vol Density Ib TPHG/lb sod <br /> (ft3) (pcf) <br /> 10000 ppm contour line <br /> Mass TPHG = 16440 110 00225 <br /> Mass TPHG= 40689 lbs within the 10000 ppm contour line <br /> 1000 ppm contour line <br /> Mass TPHG = 75700 110 00048 <br /> Mass TPHG= 39970 lbs within the 1000 ppm contour line <br /> 100 ppm contour line <br /> Mass TPHG= 63980 110 000033 <br /> Mass TPHG= 2322 lbs within the 100 ppm contour line <br /> 10 ppm contour line <br /> Mass TPHG= 91680 110 0000047 <br /> Mass TPHG= 474 lbs within the 10 ppm contour line <br /> 1 ppm contour line <br /> Mass TPHG= 78200 110 0000006 <br /> Mass TPHG= 55 lbs within the 1 ppm contour line <br /> 'W3 5 10 -424Z7-;;L-pounds between 26 and 45 ft <br /> H,/exceldat/arco1B100calc As <br />