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TABLE 3 . ANALYTICAL RESULTS OF GROUND WATER SAMPLES - EPA Method 8260M Shockey And Sons Trucking 850 Milgeo Avenue, Ripon, California Sample Date D1PE ETBE MTBE TAME TBA Methanol Ethanol EDB 1,2- ID DCA 10-31-97 <1.0 <1.0 <5.0 <1.0 <5.0 NA NA NA NA 01-23-98 <1.0 <1.0 <5.0 <1.0 <5.0 NA NA NA NA 06-11-98 <1.0 <1.0 <1.0 <1.0 <5.0 NA NA NA NA 12-01-98 <1.0 <1.0 <1.0 <1.0 <5.0 NA NA NA NA 03-25-99 <1.0 <1.0 <1.0 <1.0 <5.0 NA _ NA NA NA 04-11-01 <1.0 <1.0 <1,0 <1.0 <5.0 <500 <50 <1.0 <1.0 ' 01-29-02 <1.0 <1.0 <1.0 <1.0 <5.0 - - - - 06-21-02 <0.5 <0.5 <0.5 <0.5 <5:0 - - - - MW-3 09-17-02 <0.5 <0.5 <0.5 <0.5 <5.0 - - = - 05-13-03 <1.0 <1.0 <1.0 <1.0 <10 - - - - 06-19-03 <1.0 <1.0 <1.0 <1.0 <10 01-29-04 <1.0 <1.0 <1.0 <1.0 <10 -- -- -- -- ' 06-10-04 <1.0 <1.0 <1.0 <1.0 <10 02-23-05 <1.0 <1.0 <1.0 <1.0 <10 05-13-05 <1.0 <1.0 <1.0 <1.0 <10 - - - - 08-17-05 <1 <1 <1 <1 <10 - - - - . 11-15-05 <1 <1 <1 <1 <10 - - - - 10-31-97 <1.0 <1.0 6.5 <1.0 8.5 NA NA NA NA 01-23-98 <1.0 <1.0 <5.0 <1.0 16 NA NA NA NA 04-07-98 <1.0 <1.0 <5.0 <1.0 24 NA NA NA NA 06-11-98 <1.0 . <1.0 1.1 <1.0 <5.0 NA NA NA NA 03-25-99 <1.0 <1.0 <1.0 <1.0 <5.0 NA NA NA NA ' 04-11-01 <1.0 <1.0 3.1 <1.0 <5.0 <500 <50 <1.0 <1.0 MW-4 01-29-02 <5.0 <5.0 <5.0 <5.0 <25 06-21-02 <0.5 <0.5 3.4 <0.5 <5.0 - - - t 06-19-03 <1.0 <1.0 <1.0 <1.0 <10 01-29-04 <1.0 <1.0 <1.0 <1.0 <10 02-23-05 <1.0 <1.0 <1,0 <1.0 <10 - - - - 05-13-05 <1.0 <1.0 <1.0 <1.0 <10 - - - - ' 08-17-05 <1 <1 <1 <1 <10 11-15-05 <1 <1 <1 <1 <10 05-13-03 <1.0 <1.0 <1.0 <1.0 <10. - - - - ' MW-5 06-19-03" <1.0 <1.0 <1.0 <1.0 <10 - - - - 01-29-04 <1.0 <1.0 <1.0 <1.0 <10 06-10-04 <1.0__,__ <1.0 <1.0 <1.0 <10 - - - - Notes: µg11: micrograms per liter TAME: tertiary-Amyl Methyl Ether D1PE: Di-isopropyl Ether TBA: tertiary-Butyl Alcohol ETBE: Ethyl-tertiary-Butyl Ether EDB: ethylene dibromide MTBE: 'Methyl-tertiary-Butyl Ether 1,2-DCA: 1,2-dichloroethane ' Advanced GeoEnvironmental,Inc. I "