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<br /> TABLE 3
<br /> GROUNDWATER ANALYTICAL SUMMARY
<br /> ARCO Service Station No 6100
<br /> 25775 Patterson Pass Road
<br /> Tracy,Califomia
<br /> Ethyl- Total Nitrate
<br /> Date TPHG Benzene Toluene benzene Xylenes MTBE TBA TAME DIPE ETRE as NO3
<br /> Sample ID Collected (pg/L) (µg/L) (µg/L) (µg/L) (µg/L) (µg/L) (WL) (µg/L) (µg/L) (µg/L) (mg/L)
<br /> MW-1 02/08/01 171,000 26,900 32,800 4,330 18,300 106 245 <2 00 <2 00 <2 00 NA
<br /> MW-2 11/06/01 100 4 7 <0 50 <0 50 <0 50 <1 0 <100 <1 0 <1 0 <1 0 NA
<br /> 03/26/02 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 NA
<br /> 06/21/02 590[2] 13 051 <0 50 054 <0 50 <5 0 <0 50 <0 50 <0 50 NA
<br /> 09/18/02 <50 <0 50 <0 50 <0 50 <0 50 <0 50 66 <0 50 <0 50 <0 50 NA
<br /> VW-2 02/08/01 28,700 6,680 524 112 1,890 395 218 <2 00 <2 00 <2 00 <1 0
<br /> 03/26/02 33,000 9,700 670 1,000 3,500 350 <50[l] <5 0[1] <5 0[1] <5 0[1] NA
<br /> VW-3 02/08/01 33,800 2,540 2,820 194 5,550 1,000 387 570 <2 00 <2 00 <1 0
<br /> 03/26/02 43,000 6,000 4,700 930 8,800 490 <100[1] <10[1] <10[l] <10[l] NA
<br /> VW-4 02/08/01 605,000 33,900 27,500 3,070 24,200 1,890 <20,000 <200 <200 <200 <1 0
<br /> 09/18/02 160,000 21,000 24,000 2,900 26,000 1,200 <2,500 <250 <250 <250 NA
<br /> VW-5 02/08/01 <50 0 225 <0 500 <0 500 0 574 941 <200 <2 00 <2 00 <2 00 <1 0
<br /> 11/06/01 300 29 <0 50 065 <0 50 3 3 <100 <1 0 <1 0 <1 0 NA
<br /> 03/26/02 <50 <0 50 <0 50 <0 50 <0 50 6 7 <5 0 <0 50 <0 50 <0 50 NA
<br /> 06/21/02 60[2] 21 <0 50 0 52 <0 50 1 6 <5 0 <0 50 <0 50 <0 50 NA
<br /> VW-6 02/08/01 12,100 4,440 <100 <100 715 160 <200 <2 00 <2 00 <2 00 <1 0
<br /> 11/06/01 24,000 12,000 <100 <100 <100 230 <20,000 <200 <200 <200 NA
<br /> 03/26/02 <10,000[2] 5,100 <100 <100 <100 270 <50[1] <5 0[1] <5 0[1] <5 0[1] NA
<br /> 06/21/02 <20,000 7,000 <200 <200 <200 330 170 <50 <5 0 <5 0 NA
<br /> 09/18/02 9,800 5,500 28 <25 40 300 270 <25 <25 <25 NA
<br /> Arco_6100_Quartetly_Data Page 1 of 2
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