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Table 2 <br /> Historical Groundwater Monitoring and Analytical Data <br /> 7 Eleven Store#32262 <br /> 2560 West Grant Line Road <br /> Tracy CA <br /> Well ID/ 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 /> (T�} UWL) (pg►L) (Ng2) ( } 619/L) Wg/L) WWL) U grt-) WL) G-JL) (rte) (ref Ems) (feet) (feet) (feet) <br /> Grab Water Samples <br /> W1 05/03/02 1 <500 <500 <500 <500 <50,000 510,000 79,000 <500 <500 1,500 - - - <br /> W2 05/03/02 1 <250 <250 <250 <250 <25,000 110,000 23,000 <250 <250 350 - - - - <br /> Monitoring Wells <br /> MW-1 10/30/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 1 5 924 000 1653 <br /> 2577 <br /> MW-2 10/30/03 <2 5 <2 5 <2 5 <2 5 <250 1,700 <25 <2 5 <2 5 26 <2 5 <2 5 a 08 929 000 16 03 <br /> 25 32 <br /> MW-3 10/30/03 <0 50 <0 50 <0 50 <0 50 <50 95 <50 <0 50 <0 50 <0 50 <0 50 <0 50 1 3 902 000 1607 <br /> 2509 <br /> MW-4 10/30/03 <0 50 <0 50 <0 50 <0 50 <50 1 9 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 1 8 799 000 1578 <br /> 23 T7 <br /> MW-5 10/30/03 <200 <200 <200 <200 <20,000 120,000 15,000 <200 <200 210 <200 <200 1 5 833 000 1555 <br /> 2388 <br /> MW-6D 10/30/03 <0 50 <0 50 <0 50 <0 50 <50 270 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 08 685 000 1801 <br /> 24861 <br /> Exnlanatlon <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 ter(-butyl ether EDB=12 Dibromoethane <br /> ug/L=micrograms per liter <br /> TBA=Tert butanol TCE=Tnchloroethene mg/L=milligrams per liter <br /> DIPE=Dusopropyl ether DTW=Depth to water It=feet <br /> EtBE=Ethyl-tert butyl ether SPT=Separate-phase hydrocarbon thickness =Not sampled/not measured <br /> TAME=Tert amyl methyl ether WTE=Water table elevation <br /> Notes <br /> All samples analyzed using EPA Method 82608 <br /> a=Matnx Spike/Matrix Spike Duplicate Results for the analyte MtBE were affected by the analyte concentrations already present in the un spiked sample <br /> 32262 03 401-listoncal Water Page 1 of 1 <br />