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GEMELOS PROPERTY a <br /> Mass balance calculations for TPH-g in groundwater average <br /> (413)*(31416) r1 * r2 * r3 <br /> volume of impacted <br /> groundwater(elipsoid)= 41888 45 * 33 * 35 <br /> Volume of impacted <br /> groundwater= 21529 ft3 <br /> Average concentration of <br /> contaminant in groundwater <br /> 28463 pgIL <br /> Chemical TPH-g <br /> mass= 21529 ft3 2832 L 045 * 2846 25 pgl * 0000000001 k <br /> L pgIL <br /> mass = 08 kg <br /> mass = 1 7 lbs <br /> Notes <br /> For the purposes of this calculation, an elipsoid is used to estimate the volume of groundwater impacted <br /> The formula for the volume of an elipsoid is v=(413)n*rl*r2*r3 <br /> r, and r2 denote one half the width of contaminant zone (66 x 89 ft), r3 denotes one half of the thickness(gwt to bottom <br /> of screen=7ft) <br />