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Table 4 <br /> Flow Rates and Results of Air Sample Analyses <br /> Former ARCO Service Station No, 2168 <br /> 441 West Charter Way, Stockton, California <br /> Flow Rate Lab Sample Analyses(mg/m3) <br /> Date Win) Number TPHG Benzene Toluene Ethylbenzene Xylenes MTBE <br /> 01/15/97 15 <br /> 01/24/97 24 P9702357-1 55,000 980 1,400 200 890 NR <br /> P9702357-2 I80 <0 16 <0 19 <0 22 <0 22 NR <br /> 02/20/97 49 5970221-1 14,000 370 960 120 590 <300* <br /> 5970221-2 30 <0 5 <0 5 <0 5 <1 <3 <br /> 03/20/97 25 59700501-1 14,000 190 950 120 770 100 <br /> 59700501-2 <20 <0 4 <0 4 <0 5 <0 9 <3 <br /> <=Below detection limits used by laboratory <br /> cfm=Cubic feet per minute <br /> Results to milligrams per cubic meter <br /> HG=Total petroleum hydrocarbons as gasoline <br /> MTBE=Methyl tent-butyl ether <br /> *=The method reporting hmtt elevated because of matrix interferences <br /> R=Not requested <br /> N Ixls108051114061061796M1 xls Rev 0 5/13/97 <br />