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i Table 1 Third Quarter 2005 Groundwater Monitoring and Analytical Data 7-Eleven Store#14117 2725 Country Club Boulevard Stockton,CA Well ID/ 1___(p Ethyl- 1,2- Dissolved Elevation Date Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPE ETBE TAME DCA EDB Notes Oxygen DTW SPT WTE (TQC) L) b1 (m&) (P (pgfL) h-11 j I ►Lj (1� ( j ( b) (p I-) (p U (m L (feet] (feet) (feet) MWA 09/30/05 <050 <050 <0 50 <0 50 <50 <0 50 36 <0 50 <0 50 <0 50 <0 50 <0 50 28 787 000 -663 124 MW-2 09/30/05 87 <0 50 <0 50 <0 50 130 68 480 <0 50 <0 50 <0 50 <0 50 <0 50 26 712 000 -644 068 MW-3 09/30/05 16 25 390 720 9,200 <0 90 <5 0 <0 90 <0 90 <0 90 <0 90 <0 90 29 796 000 -688 1081 MW-4 09/30/05 76 <0 50 89 26 1,200 33 260 <0 50 <0 50 <0 50 <0 50 <0 50 25 745 000 -657 08s MW-5 09130105 <0 50 <0 50 <0 50 <0 50 53 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 e 41 718 000 -577 141 MW-6 09/30/05 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 27 736 000 -624 1 12 MW-7 09/30/05 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 26 714 000 -616 098 MW-8 109/30/05 120 220 100 480 3,300 190 170 <0 50 <0 50 <0 50 <0 50 <0 50 25 889 000 -6 99 1 90 Explanation TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tert-amyl-methyl ether WTE=Water table elevation MTBE=Methyl-tert-butyl ether 1,2-DCA=1,2-dichloroelhane TOC=Top of casing elevation in feet above mean sea level TBA=Tert-Butanol EDB=1,2-dibromoethane pglL=micrograms per[der DIPE=Dnsopropyl ether DTW=Depth to water mglL=milligrams per liter ELBE=Ethyl-tert-butyl ether SPT=Separate-phase hydrocarbon thickness Note Samples analyzed by EPA Method 8260E e=Hydrocarbons reported as TPHg do not exhibit a typical Gasoline chromatographic pattern 7-Elevenl7-11 Store1140631Tables114117 Current Groundwater As Page 1 of 1