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. Table 4 <br /> Flow Rates and Results of Air Sample Analyses <br /> ARCO Service Station No. 2130 <br /> 7906 North El Dorado Street, Stockton, California <br /> Sample now 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 1 1 <br /> 9/22/95 Influent 95 1 9503277 4600 61 520 86 900 <br /> Effluent 9503278 660 65 56 1 4 <br /> 1/24/96 Influent 18 S9600301-01 2,200 <3 15 3 25 <br /> Effluent S9600301-02 <60 <0 5 <05 <0 5 <0 5 <br /> 2/21/96 Influent 64 S9600163-01 3,200 18 100 24 200 <br /> Effluent S9600163-02 210 <0 5 <0 5 <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 59600993-01 21100 33 150 40 290 <br /> Effluent S9600993-02 38 <0 5 <0 5 <0 5 <10 <br /> 8/26/96 Influent 40 S9601406-01 3,300 <2 5 93 56 600 <br /> Effluent S9601406-02 35 <0 5 <0 5 <0 5 <1 0 <br /> 12/4/96 Influent 55 L9604797-1 3,600 180 350 55 390 <br /> Effluent L9604797-2 250 <05 <0 5 0 5 22 <br /> 3/20/97 Influent 38 59700500-1 2,500 370 7 8 190 340 <br /> Effluent I S9700500-2 39 <0 4 1 <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 <04 <04 0 9 41 <br /> 9/30/97 Influent 43 59700500-1 3,200 <04 180 65 620 <br /> Effluent S9700500-2 340 <0 4 21 1 6 63 <br /> 11/24/97 Influent 58 59702474-1 1,600 <08 140 53 320 <br /> Effluent 59702474-2 84 <04 0 8 0 5 18 <br /> 1st quarter 98 System remained off due to low BTEX/TPHG levels in soil vapor <br /> 2nd quarter 98 System remained off due to low BTEXITPHG levels in soil vapor <br /> 3rd quarter 98 System remained off due to low B fEX/TPHG levels in soil vapor <br /> 4th quarter 98 System remained off due to low BTEX/TPHG levels in soil vapor <br /> 1st quarter 99 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 1ARC0121301QTRLY12130Q199 XIS <br /> Table 4 P[cCal"& <br />