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TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES Guardlno and Crawford 517 West Fremont Street, Stockton, California ([lgll} i TPH-g Benzene Toluene Ethyl- Well benzene Xylenes MTBE DIPE ETBE TAME TBA Methanol Ethanol EDB DCA I D Date well Sampled EPA Screen Method EPA Methods 8021 or 8260B EPA Method 8260B 8015M 11-15-00 <50 22 37 <0 5 25 <10 <10 <10 <1 0 <5 0 <200 <50 — — 05-25-01 <50 <0 5 <05 <05 <05 <1 0 <10 <10 <10 <5 0 <500 <50 <10 <1 0 08-24-01 <50 <0 5 <05 <05 <05 <1 0 <1 0 <10 <10 <5 0 <500 <50 <10 <1 0 12-14-01 <50 <0 5 <05 <05 <05 <5 <1 <1 <1 <25 <1,000 <50 <0 5 <0 5 03-14-02 <50 <0 5 <0 5 <05 <1 <5 <1 <1 <1 <25 — — <0 5 <05 05-31-02 <50 <0 5 <0 5 <0 5 <1 <1 <1 <1 <1 <25 — — <05 <05 08-23-02 <50 <05 <0 5 <0 5 <06 <1 <1 <1 <1 <25 — -- <0 5 <05 MW-6 12-11-02 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <05 <50 — — <0 5 <05 (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 <05 <0 5 <0 5 <06 <1 <1 <1 <1 <10 — — <05 <0 5 08-29-03 <50 <0 5 <05 <05 <06 <1 <1 <1 <1 <10 — — <0 5 <0 5 12-03-03 <50 <05 <0 5 <0 5 <0 6 <1 <1 <1 <1 <t0 — — <05 <0 5 03-24-04 <50 <05 <0 5 <0 5 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 06-30-04 <50 <0 5 <05 <05 <0 6 <1 <1 <1 <1 <10 — — <0 5 <0 5 09-24-04 <50 <0 5 <05 <05 <0 6 <1 0 <1 0 <10 <1 0 <10 — — <0 5 <05 12-15-04 <50 <0 5 <05 <05 1 <0 6 <10 <10 I <t 0 <10 I <10 -- --- <05 <0 5 MW-7 09-24-04 700 <0 5 <05 78 48 <10 <10 <1 0 <10 <10 — — <0 5 <0 5 (10'--25J 12-15-04 380 24 57 81 136 <1 0 <10 <10 <10 <10 — <0 5 <05 MW-8 09-24-04 <50 <0 5 <05 <0 5 <0 6 <10 <10 <1 0 <1 0 <10 — — <05 <05 10'-25' 12-15-04 <50 <0 5 <05 <0 5 <0±--i <1 0 <10 <1 0 <10 <10 — — <05 <05 Notes pgll micrograms per liter ETBE ethyl tertiary-butyl ether 12-DCA 1,2-dichloroethane TPH-g total petroleum hydrocarbons quantified as gasoline TAME tertiary-amyl methyl ether MTBE methyl tertiary-butyl ether TSA tertiary-butyl alcohol DIPS do-isopropyl ether EDB 1,2-dibromoethane Advanced GeoEnvrronmental,Inc I,