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I TABLE 3 GROUNDWATER ANALYTICAL SUMMARY ARCO Service Station No 6100 25775 Patterson Pass Road Tracy,Califomia I Ethyl- Total Nitrate Date TPHG Benzene Toluene benzene Xylenes MTBE TBA TAME DIPE ETBE as NO3 Sample ID Collected (µg/L) (gg/L) (p /L) (pg/L) (pg/L) (pg/L) (gg/L) (pg/L) (pg/L) (WL) (m L MW-1 218101 171,000 26,900 32,800 4,330 18,300 106 245 <2 00 <2 00 <2 00 NA MW-2 1116101 100 47 <0 50 <0 50 <0 50 <1 0 <100 <1 0 <1 0 <1 0 NA 3126102 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 NA VW-2 218101 28,700 6,680 524 112 1,890 395 218 <2 00 <2 00 <2 00 <1 0 3126102 33,000 9,700 670 1,000 3,500 350 <50[1] <5 0[1] <5 0[1] <5 0[1] NA I VW-3 218/01 33,800 2,540 2,820 194 5,550 1,000 387 570 <2 00 <2 00 <1 0 3126102 43,000 6,000 4,700 930 8,800 490 <100[1] <10[1] <10[1] <10[1] NA VW-4 2/8101 605,000 33,900 27,500 3,070 24,200 1,890 <20,000 <200 <200 <200 <1 0 VW-5 2/8/01 <50 0 225 <0 500 <0 500 0 574 941 <200 <2 00 <2 00 <2 00 <1 0 1116/01 300 29 <0 50 065 <0 50 33 <100 <1 0 <1 0 <1 0 NA 3126102 <50 <0 50 <0 50 <0 50 <0 50 67 <50 <0 50 <0 50 <0 50 NA VW-6 218101 12,100 4,440 <100 <100 715 160 <200 <2 00 <2 00 <2 00 <1 0 11/6101 24,000 12,000 <100 <100 <100 230 <20,000 <200 <200 <200 NA 3126102 <10,000[2] 5,100 <100 <100 <100 270 <50[1] <5 0[1] <5 0[1] <5 0[1] NA Domestic Well 217101 <50 0 <0 500 <0 500 <0 500 <0 500 <2 00 <200 <2 00 <2 00 <2 00 16 915101 <50 <0 50 <0 50 <0 50 <0 50 <2 0 <200 <2 0 <2 0 <2 0 15 11/12/01 <50 <0 50 <0 50 <0 50 <0 50 <1 0 <100 <1 0 <1 0 <1 0 17 3126102 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <0 50 17 gg/L= micrograms per liter mg/L= milligrams per liter NA= not analyzed [1] =The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limas [2] = Hydrocarbon pattern is present in the requested fuel quantitation range,but does not resemble the pattern of the requested fuel Arco_6100_Quartedy_Data As Page 1 of 1