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1 <br /> 1 <br /> Mass Balance Calculations of TPHg Remaining in Groundwater <br /> ' Area within 1,000 ugll TPHg contour <br /> wy5 <br /> Area (fe) 2,847 <br /> Volume of cork (ft3) 42,705 <br /> Estimated porosity 0 25 <br /> Volume of water(ft3) 10,676 <br /> Volume of water(liters) 302,351 <br /> ' Average TPHg concntratron (ug/1)"1,350 <br /> Mass of TPHg (grams) 408 <br /> Area between 1,000 and 100 ugll TPHg contours <br /> Area (fe) 12,493 <br /> Volume of soil (ft3) 187,395 <br /> ' Estimated porosity 025 <br /> i <br /> j Volume of water (ft3) 46,849 <br /> I <br /> Volume of water(liters) 1,326,757 <br /> Average TPHg concntratron (ug/1) 550 <br /> ' Mass of TPHg (grams) 730 <br /> ' Area between 100 ug/l and non-detect TPHg contours <br /> Area (ftz) 7.695 <br /> ' Volume of soil (ft3) 115,425 <br /> Estimated porosity 025 <br /> Volume of water(fe) 28,856 <br /> ' Volume of water(liters) 817,209 <br /> Average TPHg concntratron (ug/1) 50 <br /> ' Mass of TPHg (grams) 41 <br /> ' Total Mass of TPHg remaining to groundwater beneath site (grams) 1,179 <br /> Total Mass of TPHg remaining in groundwater beneath site (pounds) 259 <br />