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Table 1 <br /> Fourth Quarter 2003 Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#21756 <br /> 853 East Yosemite Avenue <br /> Manteca CA <br /> Well ID/ Ethyl- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPE ETRE TAME Notes Oxygen DTW SPT WTE <br /> (TOC) (pg1L) (pgrL) (pg1L) (pg1L) (pg/L) (pg1L) (pg►L) I (pg1L) (pgI-) I (ije/L) (mall-) (feet) (feet) (feet) <br /> MW-1 10/23/03 -- -- -- -- -- -- -- -- -- -- c -- 2398 000 128 <br /> 3685 <br /> MW-2 10/23/03 -- -- -- -- -- -- -- -- -- -- c -- 2423 000 1349 <br /> 3772 <br /> MW-3 10/23/03 -- -- -- -- -- -- -- -- -- -- c -- 2379 000 11252 <br /> 3631 <br /> MW-410/23/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 b 61 21 91 000 1'12 22 <br /> 34 13 <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tert-amyl-methyl ether pg1L=micrograms per liter <br /> MtBE=Methyl-tert-butyl ether DTW=Depth to water mg/L=milligrams per liter <br /> TBA=Tert-butanol SPT W Separate-phase hydrocarbon thickness --=Not sampled/not measured <br /> DIPE=Diisopropyl ether WTE=Water table elevation <br /> EtBE=Ethyl-tert-butyl ether TOC=Top of casing elevation in feet above mean sea level <br /> Note Samples analyzed using EPA Method 82606 <br /> b=Matrix SpikelMatnx Spike Duplicate Results associated with Sample MW-4 for Toluene and Benzene were outside of control limits due to an inconsistency between Vials <br /> Since the LCS recoveries were within control limits,no data are flagged <br /> c=Less than 0 5 feet of water in well Groundwater sample not collected <br /> 7-Elevenl7-11 Store1140631Tables121756 03-4Q As Page 1 of 1 <br />