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TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES ENTERPRISE INVESTMENTS (Former J.B. Murphy Trucking) 355 Enterprise Place, Tracy, California (ug/0 Sam le Sam le TPH as TPH as MTBE Benzene Toluene Ethyl Xylenes MTBE D1PE ETBE TAME TBA EDB 1,2-DCA P P Gasoline Diesel 8020 benzene Location Date EPA Methods 8015M/8020/8260B* EPA Method 8260B 02/11/02 230 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1-0 <1:0 <1.0 <25 <0.5 <0.5 05/13/02 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 08/I3/02 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1..0 <1.0 <1.0 <25 <0.5 <0.5 11/19/02 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 03/21/03 <50 <50 <1.0 . <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 MW-5 05/30/03 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 08/14/03 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 07/20/04 130 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1.0 <1.0 <1.0. <10 <0.5 <0.5 10/13/04 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1.0 Q.0 <1.0 <10 <0.5 <0.5 02/10/05 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1.0 <1.0 <1.0 <10 <0.5 <0.5 06/24/05 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1.0 <1.0 <1.0 <10 <0.5 <0.5 02/11/02 360 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 05/13/02 100 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 Q.0 <25 <0.5 <0-5 08/13/02 290 2800 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 11/19/02 160 800 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 03/21/03 110 920 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0-5 EW-1 05/30/03 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0.5 <0.5 08/14/03 <50 <50 <1.0 <0.5 <0.5 <0.5 <1.0 <5.0 <1.0 <1.0 <1.0 <25 <0-5 <0.5 07/20/04 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1.0 <1.0 <1.0 <10 <0.5. <0.5 10/13/04 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1-0 <1.0 <1.0 <10 <0.5 <0.5 02/10/05 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1.0 <1.0 <1.0 <10 <0.5 <0.5 06/24/05 <50 <50 - <0.5 <0.5 <0.5 <0.6 <1.0 <1-0 <1.0 <I.0 <10 <0.5 <0.5 Notes: µg/1: micrograms per liter ETBE: ethyl tertiary-butyl ether *: EPA Method 8260B used after 8/14/03 �-� TAME: tertiary-amyl methyl ether not analyzed 'J TBA: tertiary-butyl alcohol TPH: total petroleum hydrocarbons w,\ EDB: 1,2-dibromoethane MTBE: methyl tertiary-butyl ether L� 1,2-DCA: 1,2-dichloroethane DIPE: di-isopropyl ether cr- Advanced GeoEnvironmental,he.