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TABLE 2 <br /> GROUNDWATER ANALYTICAL RESULTS <br /> FOR OXYGENATES AND ADDITIONAL,COMPOUNDS <br /> Former ARCO Service Station No.548 <br /> 1612 Hammer Lane,Stockton,California <br /> Well TBA MTBE RIPE ETBE TAME 1,2-DCA <br /> Number Date µ L µ /L L L L /L <br /> MW-6 6/26100 <100 14 <2 <2 <2 NA <br /> 9/28100 <200 3.98 <2 <2 <2 29.2 <br /> 12/18/00[1] <200 <2 <2 <2 <2 NA <br /> 3/14/01 <20 2.12 <1.0 <1.0 <1.0 28.8 <br /> 6/19/01 <100 7.2 <2 <2 <2 17 <br /> 9/11/01 <100 6.8 <2 <2 <2 14[2] <br /> 12/13/01 <5.0 21 <0.50 <0.50 <0.50 4.4 <br /> 3/12/02 <5.0 0.53 <0.50 <0.50 <0.50 7.6 <br /> 6117102 <5.0 7.7 <0.50' <0.50 <0.50 3.7 <br /> VW-1 12/13/01 22 87 <0.50 <0.50 <0.50 4.5 <br /> 3/12102 <5.0 7.7 <0.50 <0.50 <0.50 3.7 <br /> 6/17/02 <5.0 7.8 <0.50 <0.50 <0.50 1.5 <br /> VW-2 12/13/01 32 1.5 <0.50 <0.50 <0.50 28 <br /> 3/12102 <5.0 <0.50 <0.50 <0.50 <0.50 0.80 <br /> 6117/02 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> VW-3 12/13/01 59 16 <0.50 <0.50 <0.50 8.2 <br /> 3/12102 <5.0 0.72 <0.50 <0.50 <0.50 2.5 <br /> 6/17/02 <5.0 <0.50 <0.50 <0.50 <0.50 0.54 <br /> VW-4 12/13/01 <5.0 100 <0.50 <0.50 <0.50 12 <br /> 3/12/02 <5.0 32 <0.50 <0.50 <0.50 5.3 <br /> 6117102 <5.0 98 <0.50 <0.50 <0.50 9.3 <br /> VW-5S 3112/02 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> 6/17/02 25 0.53 <0.50 <0.50 <0.50 <0.50 <br /> VW-5D 12/13/01 <50[3] 67[3] <5.0[3] <5.0[31 <5.0[3] 83[3] <br /> 3112/02 890 <25[31 <2.5[3] <2.5[31 <2.5[3] <2.5[3] <br /> 6117102 630 <2.5 <2.5 <2.5 <2.5 <2.5 <br /> pg/L=micrograms per liter. TBA=Tertiary butyl alcohol. <br /> Oxygenates analyzed by USEPA Method 8260. MTBE=Methyl tertiary butyl ether. <br /> =Below detection limit for analytical methods used. DIPE=Di-isopropyl ether. <br /> NA=not analyzed. ETBE=Ethyl tertiary butyl ether. <br /> P l This sample was analyzed outside EPA recommended holding time. TAME=Tertiary amyl methyl ether. <br /> [2]The opening calibration verification standard was outside acceptance 1,2-DCA=1,2-Dichloroethane <br /> limits by<3%. Although the Lab Control Sample verified the accuracy of <br /> this batch,this should be considered in evaluating the data for its intended purpose. <br /> [3]The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limits. <br /> [41 The sample was diluted due to the presence of high levels of target analytes resulting in elevated reporting limits. <br /> Arco_0548_Quarteriy_Qata.XLS 2 of 2 <br />