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I TABLE 3 ' ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA METHOD 8260 Modified Grant Line Gas &Food ' 2420 Grant Line Road, Tracy, California Gugn) IConstituent Date I MW 1 I MW-2 ,MW-3 I MW-4 I MW-5 MW-6 I MW-7 I MW-8 ' 01-30-98 <5 0 <5 0 <5 0 <50 <50 <5 0 06-18-98 <5 0 <5 0 <5 0 5.1 <5 0 <5 0 09-28-98 <250 <5 0 <5 0 <I5_ <15 <5 0 -- 12-17-98 <50 <5 0 <5 0 <25 <25 <5 0 -- -- 03-25-99 <25 <5 0 <5 0 <15 <5 0 <5 0 <5 0 <5 0 06-21-99 <5 0 <5 0 <5 0 60 8.0 <5 0 <5 O <5 0 09-20-99 <25 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 ' 12-21-99 <5 0 <5 0 <5 0 <5 0 5.6 <5 0 <5 0 <5 0 04--17-00 <10 <10 <10 <10 <10 <10 <10 <10 ternary butyl 04-18-00 NS NS NS <10 NS NS NS NS alcohol(TBA) 09-12-00 <10 <5 0 <5 0 <5 0 <13 <5 0 <5 0 <5 0 ' 12-19-00 <13 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 03-23-01 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 06-22-01 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 ' 09-17-0I <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 12-26-01 <25 <25 <25 <25 <25 <25 <25 <25 03-21-02 <10 <5 0 <5 0 <10 <5 0 <5 0 <5 0 <5 0 06-21-02 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 l09-19-02 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <100 ie 12-19-02 NS <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 03-12-03 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <100 ' 12-26-01 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 1,2- 03-21-02 <1 0 <0 5 <0 5 <10 <0 5 <0 5 <0 5 <0 5 dichloroethane 06-21-02 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 ' (1,2-DCA) 09-19-02 NA NA NA NA NA NA NA NA 12-19-02 NS NA NA NA NA NA NA NA 03-12-03 NA NA NA NA NA NA NA NA ' 12-26-01 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 ethylene 03-21-02 <1 0 <0 5 <0 5 <1 0 <0 5 <0 5 <0 5 <0 5 dtbrorrude 06-21-02 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 ' (EDB) 09-19-02 NA NA NA NA NA NA NA NA 12-19-02 NSNA NA NA NA NA NA NA 03-12-03 NA NA NA NA NA NA NA NA ' Notes µg/l Micrograms per liter Not measured NS Not sampled ' NA Not analyzed • Advanced GeoEnvironmental,Inc.