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ESTIMATION OF DISSOLVED TPH AS GASOLINE IN GROUND WATER-Continued <br /> lie <br /> March 26, 1992 <br /> Former Exxon Service Station No. 7-3330 <br /> 3128 West Benjamin Holt Drive <br /> Stockton, California <br /> ( } <br /> (3) = (n (60) (30) - Tr (20) (45)) (4) (.40} 7.48 gallons 8 34 lb (50 ppb <br /> 1 ft3l 1 cellon J 1X10 <br /> 0.014 lbs <br /> Total layer (1) = 0.54 lbs + 0.6 lbs + 0.14 lbs = 1.28 lbs <br /> (B) La, ear 2. <br /> (1) = n (5) (15) (4) (-40) 7.48 gallons 8.34 lb 5,700 ppb <br /> 1 ft3 1 gallon 1X109 <br /> 0.134 lbs <br /> (2) _ (Tc (15) (30) - Tc (5) (15)) (4) (.40) 7.48 gallons 8.34 lb 3,200 ppb <br /> 1 ft3 1 gallon 1X209 <br /> 0.376 lbs <br /> (3) _ (Tc (45) (20) - Tc (30) (15)) (4) (.40) 7.48 gallons 8.34 Ib SO ppb <br /> 1 ft3 k 1 gallon) 1XIp9 <br /> = 0.007 lbs <br /> Total layer (2) = 0.134 lbs + 0.376 lbs + 0.007 lbs = 0.517 lbs <br /> I • <br /> RPrOOI.810 <br />