Laserfiche WebLink
ATTACHMENT 5 <br /> I <br /> Derivation Of Remaining Hydrocarbon Mass <br /> Calculations Used To Derive The .Estimated Mass Of Hydrocarbons <br /> Remaining In -Soil <br /> Estimated mass of TPHG remaining in soil=(estimated mass of soil) x (concentration of TPHG) <br /> where, <br /> estimated mass of soil = (estimated soil bulk volume) x (soil bulk density) <br /> estimated soil bulk volume = (areal extent of TPHG) x(vertical extent of TPHG) <br /> therefore, <br /> estimated soil bulk volume = (2,856:0 sq. ft.)* x (21.0 ft.) = 59,976.0 cu. ft. <br /> estimated mass of soil _ (59,976.0 cu. ft.) x (38.23 kg/cu. ft.)** = 2,292,882.0 kg <br /> finally, <br /> estimated mass of TPHG remaining,in 'soil = (2,29202.0 kg) x (130.0 mg/kg)# <br /> 298,074,722:0 mg <br /> = 656 -lbs. <br /> * measured from area shown on Attach. 4 <br /> ** converted from published mean.soil bulk density= 1.35 g/cc <br /> # concentration units equivalent to parts per million(ppm) <br />