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t , TABLE 2 ' ANALYTICAL RESULTS OF GROUND WATER SAMPLES ANALYZED BY EPA METHODS 8015 AND 8020/8260 ' Former STOCKTON PLATING Facility 632 South E1 Dorado, Stockton, California ISample I D/ TPE{as MTBE Benzene Toluene Ethyl- Total Date Gasoline benzene Xylenes ' MW4/12-06-94 320 NA 1 1 <0 3 0 4 <0 3 MW4/05-23-95 <200 NA <10 <10 <10 <10 MW4/09-29-95 <50 NA <0 5 <0 5 <0 5 <0 5 MW4/12-21-95 71 NA <0 5 <0 5 <0 5 <0 5 ' MW4/03-08-96 54 <5 0 <0 5 <0 5 <0 5 <0 5 M W4/06-03-96 <50 67 <0 5 <0 5 <0 5 <0 5 MW4/09-18-96 60 <5 0 <0 5 <0 5 <0 5 <0 5 ' MW4/12-16-96 <50 <5 0 <0 5 <0 5 <0 5 <0 5 M W4/03-12-97 58 64 <0 5 <0 5 <0 5 <0 5 MW4/06-27-97 87 85 <0 5 <0 5 <0 5 <0 5 MW4/09-08-97 <50 <5 0 078 3 2 <0 5 38 I MW4/12-12-97 78 <5 0 <0 5 066 <0 5 1 2 ` MW4/03-19-98 <50 <5 0 <0 5 <0 5 <0 5 <0 5 MW4/06-19-98 <50 <20 <0 5 <0 5 <0 5 <0 5 MW4/09-22-98 150 <30 4 1 4 7 4 7 21 ' MW4/12-11-98 450 <20 15 95 17 78 MW4/03-24-99 730 <20 29 100 25 120 MW4/06-23-99 <50 <5 0 <0 5 <0 5 <0 5 <0 5 MW4/09-24-99 <50 <5 0 <0 5 1 1 <0 5 1 4 '• MW4/01-24-00 <50 <5 0 <0 5 <0 5 <0 5 <0 5 MW4/06-16-00 <50 NA <0 5 <0 5 <0 5 <0 5 MW4/10-04-00 <50 NA <0 5 1 1 <0 5 <0 5 MW4/02-13-01 <50 <5 0 <0 5 <0 5 <0 5 <0 5 ' MW4/05-15-01 <50 <5 0 <0 5 <0 5 <0 5 <0 5 MW4/11-05-01 <50 <5 0 <0 5 <0 5 <0 5 <0 5 MW4/11-05-01 <50 <5 0 <0 5 <0 5 <0 5 <0 5 MW4/01-28-02 <50 <5 0 <0 5 1 0 <0 5 1 1 ' MW4/06-26-02 <50 <5 0 <0 5 <0 5 <0 5 <0 5 M W4/09-25-02 <50 NA <0 5 <0 5 <0 5 <0 5 MW4/03-03-03 <50 <0 5 <0 5 <0 5 <0 5 <0 5 ' MW4/09-26-03 <50 NA <0 5 <0 5 <0 5 <0 5 MW4/02-17-03 <50 NA <0 5 <0 5 <0 5 <0 5 Notes Pg/l micrograms per liter ' M rBE methyl tertiary butyl ether by EPA method 8020 NA Not analyzed Di-isopropyl Ether(DIPE) Ethyl tertiary-Butyl Ether(ETBE) Methyl-tertiary Butyl Ether(MTBE) ' tertiary-Amyl Methyl Ether(TAME) tertiary-Butanol(TBA) ethyleriedihromide(EDB) Advanced GeoEnvironmental,Inc 1,2 d&chloroethan(1,2-DCA)