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A <br /> Third Quarter 2004 Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#32262 - <br /> 2360 West Grant Line Road <br /> Tracy CA <br /> Well IDI Ethyl- 1,2- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPE EtBE TAME DCA EDB Notes Oxygen DTW SPT WTE <br /> 90c) ( ) (p ) (N L) (N 1L) (Si ) (N L ( !L (p ) fL m lL feet feet feet <br /> MW-1 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 a 21 868 000 1709 <br /> 2577 <br /> MW-2 07/30/04 <7 0 <7 0 <7 0 <7 0 <700 2,900 <40 <7 0 <7 0 <7 0 <7 0 <7 0 02 869 000 1663 <br /> 2532 <br /> MW-3 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 a 02 826 000 1683 <br /> 25091 <br /> MW-4 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 a 02 727 0 00 1650 <br /> 2377 <br /> MW-5 07/30/04 <40 <40 <40 <40 <4,000 17,000 <200 <40 <40 <40 <40 <40 03 768 000 1620 <br /> 2388 <br /> MW-6D 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 64 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 a 61 665 000 1821 <br /> 2486 <br /> MW-7 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 03 872 000 1625 <br /> 2497, <br /> MW-8 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 210 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 09 11 18 000 1415 <br /> 25331 <br /> MW-9 07/30/04 <0 90 <0 90 <0 90 <0 90 <90 420 <5 0 <0 90 <0 90 <0 90 <0 90 <0 90 06 1031 000 1492 <br /> 2523 <br /> TP-1 07/30/04 <0 50 <0 50 <0 50 <0 50 <50 97 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 a 02 562 000 -- <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons-as-gasoline 1,2-DCA=1,2-Dichloroethane TOC=Top of casing elevation in feet above mean sea level <br /> MtBE=Methyl-tert butyl ether EDB=1 2-Dibromoethane pg/L=micrograms per liter <br /> TBA=Tert-butanol DTW=Depth to water mg1L=milligrams per liter <br /> DIPE=Dusopropyl ether SPT=Separate-phase hydrocarbon thickness —=Not sampledinot measured <br /> EtBE=Ethyl-tent-butyl ether WTE=Water table elevation <br /> TAME=Teri-amyl-methyl ether <br /> Notes <br /> Samples analyzed by EPA Method 82608 <br /> a=Matrix Spike/Matnx Spike Duplicate Results for the analyte MtBE were affected by the analyte concentrations already present in the un-spiked sample <br /> 117-Eleven%7 11 Stores13322621Tables132262 Current Groundwater xlsWater Page 1 of 1 <br />