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i <br /> �rrr� <br /> TABLE 1 <br /> ' TPHg MASS BALANCE CALCULATIONS <br /> (DissolvedTPHg in Groundwater August 12, 2004) <br /> Parkinson's Hammer.I-5 Arco <br /> 3250 West Hammer Lane, Stockton, California <br /> Zone 1: (500 ppb contour interval) <br /> Volume: 71(13')(10')(15')=6,126 ft3 <br /> Pore Volume: 6,126 ft3 (30%porosity)= 1,838 ft3 <br /> _ TPHg = 1,100 ppb=(1,100 lb TPHg/1x109 lb H20) <br /> 1,838 ft3(7.48 gaUft)(8.328 lb H20/gal)(1,100 lb TPHg/lx109 lb H20)=0.13 lb TPHg <br /> ' Zone 2: (50 ppb contour interval) <br /> Volume: [71(45')(32')(15')]—[7c(13')(10')(15')] =61,732 ft3 <br /> Pore Volume: 61,732 ft3 (30%porosity)= 18,520 ft3 <br /> € TPHg = 102 ppb=(102 lb TPHg/lxl09 lb H20) <br /> 61,732 ft3(7.48 gal/ft3)(8.328 lb H20/gal)(102 lb TPHg/lxl09 lb H20)=0.39 lb TPHg <br /> t <br /> Total dissolved TPHg in groundwater: 0.52 lb <br /> I <br /> �8 <br /> it <br /> � 1 <br /> f � <br /> d, <br /> .j <br />