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Table 3 Groundwater Analytical Data-Oxygenate Compounds(CHEVRON) Chevron Service Station a 9-4275 ,• 2905 West Benjamin HDR Drive Stockton,CaOfomla WELL Date Methanol Ethanol TBA MSBE DOPE TAME ELSE 1.2-DCA EDB ID Sampled Notes (pgli IPglLI Ippi (PSL) (OWL) (pg1L) (ygi (yg1L) (OWL) Mi 08117103 - - <100 350 <2 2 <2 <2 <2 (cont,) 09/24/03 - <100 220 <2 4 42 Q Q 12118/03 - - <100 120 4 <2 <2 <2 c2 03123104 - - <100 72 <2 <2 <2 <2 42 08122104 - - <100 160 42 Q <2 <2 <2 r 0911 - - <100 190 <2 2 Q <2 <2 ' 12128104 - <50 <5 200 <0.5 3 <0.5 <0.5 <0.5 03107105 - <50 <5 43 <0.5 0.5 <6.5 <0.5 <0.5 06/30105 Monitoring well destroyed Muni-10 11125197 NO. NO NO NO NO ND NO - - 03126198 <1,000 <500 <100 42.0 <2.0 <2.0 <2.0 - - 06/24/98 - <500 <100 c2.0 <2.0 <2.0 <2-0 - - 03102101 S - <500 <50 <2.0 <2.0 <2.0 <2.0 <2.0 42.0 03102101 K <5.0 <5.0 0.57 <0.50 <0.50 <0.50 -0.50 <0,50 05/10101 - - <5.0 <0.50 <0.50 <6.50 <6.50 <0.50 - 08121101 - - <5.0 <0.50 <0.50 <0.50 <0,50 <0.50 <0.50 6117103 Unable to Access Well 09/24/03 - - <100 5 <2 <2 <2 <2 <2 10/31103 - - <5 <0,5 <0.5 40.5 c0.5 <0.5 <0.5 12/18103 - - - - - -- - - - 03123/04 - 06I22104 09!21104 Unable to Access Well 12J28/2004 Unable to Amass Well 03!07705 Unable to Access WBII 06130/05 Unable to Access WBII 09!22105 Unable to Access WBII 1 V78105 Unable to Access WBII 3120106 Unable to Access Well EXPLANATIONS: TBA a Tertiary-butyl alcohol pWL -M3cinprame per Otter MTBE-Methyl tertiary butyl ether ND -Not Detected RIPE a D-opropyl ether - •Not Analyzed TAME-Tertiaryamyi-methyl ether 5 -Segwla Analytical ELBE-Ethyl tertlary-butyl ether K a KHIAnalytical 1,2-DCA a 1,2-Oichloroethane < Not detected at or above the laboratory method detection limit EDB-1,2-Dibromoethene ANALYTICAL METHODS, EPA Method 8015 for Methanol EPA Method 8260 for Oxnenate Compounds l AC hevror%42751TablesW4275_R MR 4014