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Table 1 <br /> Fourth Quarter 2005 Groundwater Monitoring and Analytical Data <br /> i <br /> 7-Eleven Store#14117 <br /> 2725 Country Club Boulevard <br /> Stockton,CA <br /> Well IDI Ethyl- 1,2- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPS ETBE TAME DCA EDB Notes Oxygen DTW SPT--, VVTE <br /> (TOC) ( 1L} {pglL} {pg1L} L) (NgIL} (pg1L} {P9ltr} {P91L} {pglL} {p®!L} (pglL} (unIL} (mglL} (feet) {feet) {feet} <br /> MW-1 12/09/05 370 91 34 110 1,800 22 88 <0 50 <0 50 <0 50 <0 50 <0 50 f 10 8 34 0 00 -7 10 <br /> 1 24 <br /> MW-2 12/09/05 20 46 10 6.4 180 7.3 230 <0 50 <0 50 <0 50 <0 50 <0 50 04 768 000 -7 00 <br /> 068. <br /> MW-3 12/09/05 11 21 360 660 8,900 <1 0 <50 <1 0 <1 0 <1 0 <1 0 <1 0 02 6 64 000 -556 <br /> 1 08 <br /> MW-4 12/09/05 42 28 12 54 1,300 18 160 <0 50 <0 50 <0 50 <0 50 <0 50 04 794 000 -706 <br /> 088 <br /> MW-5 12/09/05 <0 50 092 <0 50 088 61 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 e 21 619 000 -478 <br /> 141 <br /> MW-6 12/09/05 <0 50 23 059 36 <50 094 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 09 774 1 000 -662 <br /> 1 12 <br /> MW-7 12/09/05 <0 50 094 <0 50 094 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 05 764 000 -666- <br /> 098 <br /> 666098 <br /> MW-8 12/09/05 24 45 40 160 1,200 180 150 <0 50 <0 50 <0 50 <0 50 <0 50 09 923 000 -733 <br /> 190 <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tert-amyl-methyl ether WTE=Water table elevation <br /> MtBE=Methyl-cert-butyl ether 1,2-DCA=1 2-dichloroethane TOC=Top of casing elevation in feet above mean sea level <br /> TBA=Tert-Butanot EDB=1,2-dibromoethane pg1L=micrograms per liter <br /> DIPE=Diisopropyl ether DTW=Depth to water mglL=milligrams per Inter <br /> EtBE=Ethyl-tent-butyl ether SPT=Separate-phase hydrocarbon thickness <br /> Note <br /> Samples analyzed by EPA Method 8260B <br /> e=Hydrocarbons reported as TPHg do not exhibit a typical Gasoline chromatographic pattern <br /> f=Matrix Spike/Matrix Spike Duplicate Results for the analyte Benzene were affected by the analyte concentrations already present in the un-spiked sample <br /> 7-Elevenl7-11 Store1140631Tables114117 Current Groundwater As Page 1 of 1 <br />