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TABLE 3 ANALYTICAL RESULTS OF GROUND WATER SAMPLES Guardlno and Crawford 517 West Fremont Street, Stockton, California {µg/l 3 TPH-g Benzene Toluene Ethyl Xylenes MTBE DIPE ETBE TAME TBA Methanol Ethanol EDB t 2- Well benzene I D Date Well Sampled EPA Screen Method EPA Methods 8021 or 8260B EPA Method 8260B 80LSM 11-15-00 <50 22 37 <0 5 25 <1 0 <1 0 <1 0 <1 0 <5 0 <200 <50 — — 05-25-01 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 <500 <50 <1 0 <1 0 08-24-01 <50 <0 5 <0 5 <0 5 <0 5 <1 0 <1 0 <1 0 <1 0 <5 0 <500 <50 <l 0 <1 0 12-14-01 <50 <0 5 <0 5 <0 5 <0 5 <5 <1 <1 <1 <25 <1,000 <50 <0 5 <0 5 03-14-02 <50 <0 5 <0 5 <0 5 <1 <5 <1 <1 <1 <25 — — <0 5 <0 5 05-31-02 <50 <0 5 <0 5 <0 5 <1 <1 <1 <1 <1 <25 — — <0 5 <0 5 08-23-02 <50 <0 5 <0 5 <0 5 <0 6 <1 <1 <1 <1 <25 — — <0 5 <0 5 MW-6 12-11-02 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <5 0 — — <0 5 <0 5 (10'-25) 03-06-03 <50 <0 5 <0 5 <0 5 <1 <1 <1 <1 <1 <10 — — <0 5 <0 5 07-14-03 <50 <0 5 <0 5 <0 5 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 08-29-03 <50 <0 5 <0 5 <0 5 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 12-03-03 <50 <0 5 <0 5 <0 5 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 03-24-04 <50 <0 5 <0 5 <0 5 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 06-30-04 <50 <0 5 <0 5 <0 5 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 09-24-04 <50 <0 5 <0 5 <0 5 <0 6 <1 0 <L 0 <1 0 <1 0 <10 — — <0 5 <0 5 MW-7 <0 5 <0 5 7 8 48 (10'-25) 09-24-04 700 MW-809-24-04 <50 <0 5 <0 5 <0 5 106 <1 0 <1 0 <1 0 <1 0 <10 — — <0 5 <0 5 (10'-25) Notes µp/1 micrograms per Mer TAME tertiary-amyl methyl ether TPH-g total petroleum hydrocarbons quantified as gasoline TBA tertiary-butyl alcohol MTBE methyl tertiary-butyl ether EPB 1,2-dibromoethane DIPE di-isopropyl ether 1,2-DCA 1 2-dichloroethane ETBE ethyl tertiary-butyl ether Advanced GeoEnvironmental,Inc