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Table 4 <br /> Flow Rates and Results of Air Sample Analyses <br /> ARCO Service Station No 2130 <br /> 7906 North EI Dorado Street, Stockton, California <br /> Sample Flow Rate Lab Sample Analyses m m <br /> Date Location cfm Number TPHG Benzene Toluene Eth lbenzene Xylenes <br /> 7/17/95 Influent 95 9501975 1800 27 130 21 100 <br /> Effluent 9501976 340 34 32 067 32 <br /> 8/29/95 Influent 95 4600 88 620 120 750 <br /> Effluent 350 39 25 087 11 <br /> 9/22/95 Influent 95 9503277 4600 61 520 86 900 - <br /> Effluent 9503278 660 6 5 5 6 1 4 <br /> 1/24/96 Influent 18 S9600301-01 2,200 <3 15 3 25 <br /> Effluent S9600301-02 <60 <0 5 <0 5 <0 5 <0 5 <br /> 2/21/96 Influent 64 59600163-01 3,200 18 100 24 200 <br /> Effluent 59600163-02 210 <0 5 <05 <0 5 <0 5 <br /> 3/13/96 Influent 60 --- NR NR NR NR NR <br /> Effluent --- NR NR NR NR NR <br /> 6/18/96 Influent 56 S9600993-01 2,100 33 150 40 290 <br /> Effluent S9600993-02 38 <0 5 <05 <0 5 <1 0 <br /> 8/26/96 Influent 40 S9601406-01 3,300 <25 93 56 600 <br /> Effluent 59601406-02 35 <0 5 <0 5 <0 5 <10 <br /> 12/4/96 Influent 55 L9604797-1 3,600 180 350 55 390 <br /> Effluent L9604797-2 250 <0 5 <05 0 5 22 <br /> 3/20/97 Influent 38 59700500-1 2,500 370 78 190 340 <br /> Effluent S9700500-2 39 <0 4 <0 4 <0 5 <0 9 <br /> 6/30/97 Influent 44 S9700500-1 4,000 12 180 61 690 <br /> Effluent 59700500-2 170 <0 4 <0 4 0 9 4 1 <br /> 9/30/97 Influent 43 S9700500-1 3,200 <0 4 180 65 620 <br /> Effluent 59700500-2 340 <0 4 21 16 63 <br /> 11/24/97 Influent 58 S9702474-1 1,600 <0 8 140 53 320 <br /> Effluent S9702474-2 1 84 <04 08 0 5 18 <br /> 1st quarter 98 System remained off due to low BTEX/TPHG levels in soil vapor <br /> <=Below detection limits used by laboratory <br /> Results in milligrams per cubic meter <br /> PHG=Total petroleum hydrocarbons as gasoline <br /> fm=Cubic feet per minute <br /> R=Not requested <br /> CP1E 1ARCO 21301QTRLY12130Q299 XLS � e <br /> Table 4 <br />