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Z <br /> VAPOR TREATMENT SYSTEM MASS REMOVAL CALCULATIONS <br /> JUNE 28, 1993- SEPTEMBER 1, 1993 <br /> Satnpip 7F'"ppnw fiemoval Flat* Number pgwnda <br /> Date Removed(1) f1) pb%lday?(2) 61 Days ftnoved <br /> 06/28/93 740 53 953 9 8577 <br /> 07/08/93 994 49 1184 6 7101 <br /> 07/13/93 997 59 1429 9 12865 <br /> 07/22/93 989 59 1418 5 7090 <br /> 07/30/93 892 78 1691 6 10144 <br /> 08/05/93 448 74 806 8 6445 <br /> 08/18/93 744 74 1338 3 4014 <br /> Approidmate Total Mass Removed = 56235 <br /> (1) = Measured quantity on site <br /> (2) = Removal rate derived from formula using the universal gas constant and 65 as the molecular weight of <br /> gasoline TPH Obs/day) = 000243*scfm *ppmv <br /> TPH-G = Total petroleum hydrocarbons as gasoline <br /> ppmv = parts per million by volume <br /> cfm = cubic feet per minute <br /> lbs/day = pounds per day <br /> 38798013 070 <br /> DOW GROUNDWATER � <br /> TECHNOLOGY,INC <br />