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TABLE 2 SUMMARY OF ANALYTICAL RESULTS-GROUNDWATER FAYETTE MANUFACTURING SITE TRACY,CA (Page 6 of 6) POTENTIAL CONTAMINANTS OTHER GEOCHEMICAL PARAMETERS Sample Date TPI-IgB T E X TBA DIPE ETBE TAME EDB 1,2-DCA MTBE DO CO2 DFI N S TA Eh ID u /L u /L u /L u /L u /L u /L u /L u /L u /L u /L u /L u /L m /L m /L m /L m /L m /L m /L my GP1-W15 04/05/04 12,000 64 10 460 1,100 <200 <20 <20 <20 <20 <20 <20 GP2-W16 04/05/04 38,000 98 490 2,500 6,700 <400 <40 <40 <40 <40 <40 <40 GP3-W16 04/05/04 <50 <0.5 <0.5 <0.5 <1.0 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 PT1-W 1 04/08/04 62 0.9 <0.5 1.5 3.6 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- -- __ PT1-W5 04/08/04 <50 <0.5 <0.5 <0.5 <1.0 <20 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 DW1 09/08/05 <50 <0.5 <0.5 <0.5 <1.0 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 DW2 09/08/05 <50 <0.5 <0.5 <0.5 <1.0 <5.0 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Notes: mg/L denotes milligrams per liter or parts per million ETBE denotes ethyl tertiary butyl ether(EPA Method 8260 or 82606) ug/L denotes micrograms per liter or parts per billion TAME denotes tertiary amylmethyl ether(EPA Method 8260 or 82606) <denotes not detected at or above Stated Method Detection Limit EDB denotes tertiary amylmethyl ether(EPA Method 82608) --denotes not analyzed 1,2-DCA denotes methyl tertiary butyl ether(EPA Method 8260B) denotes that MTBE has been confirmed by Method 8260 MTBE denotes methyl tertiary butyl ether(EPA Method 8020,8260,or 82606) "'denotes MTBE detected by EPA Method 8020 only DO denotes dissolved oxygen TPHg denotes total petroleum hydrocarbons as gasoline(EPA Method 3550/8015) CO2 denotes Carbon Dioxide B denotes benzene(EPA Method 8020 or 8021 B) DFI denotes dissolved ferrous iron T denotes toluene(EPA Method 8020 or 8021 B) N denotes nitrate E denotes ethylbenzene(EPA Method 8020 or 8021 B) S denotes sulfate X denotes total xylenes(EPA Method 8020 or 8021 B) TA denotes total alkalinity TBA denotes tertiary butanol(EPA Method 8260 or 8260B) Eh denotes redox potential in millivolts(mV),field measured DIPE denotes di-isopropyl ether(EPA Method 8260 or 8260B) (field measurement during well purging process) W:\17861\TABLE2[9/30/2005]