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TABLE 4 <br /> ANALYTICAL RESULTS OF GROUND WATER SAMFLES <br /> GUARDINO AND CRAWFORD <br /> 517 West Fremont Street, Stockton, California <br /> (µS/1) <br /> TPH-g Benzene FToluenc benzene Xylenes MTBE DIPE ETBE TAME TBA Methanol Ethanol EDB 152- <br /> DCA <br /> Well LD. Date <br /> Well Sampled EPA <br /> Screen Method EPA Methods 8021 or 8260B EPA Method 8260B <br /> 8015M <br /> 09-24-04 700 <0.5 <0.5 7.8 48 <1 .0 Q .0 4 .0 <1 .0 <10 - - <0.5 <0.5 <br /> 12-15-04 380 2.4 5.7 8.1 13.6 <1.0 <1 .0 <l .o <1 .0 <10 - - <0.5 <0.5 <br /> MW-7 03-25-05 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <1 .0 <1 .0 <1 .0 <10 - - <0.5 <0.5 <br /> (10'-25) 06-29-05 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <1 .0 <1 ,0 <1 .0 <10 - - <0.5 <0.5 <br /> 09-12-05 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <1 .0 4 .0 <1 .0 <10 - - <0.5 <0.5 <br /> 12-15-05 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <1 .0 <1 .0 <1 .0 <10 - - <0.5 <0.5 <br /> 03-08-06 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <I .0 <1 .0 <1 .0 <10 <0.5 <0.5 <br /> 06-08-06 <50 <0.5 <0.5 <0.5 <0.6 <L0 <I .0 <1 .0 <1 .0 <10 - - <0.5 <0.5 <br /> 09-11-06 <50 <0.5 <0:5 <0.5 <0.6 <1 .0 <1 .0 <1 .0 <1 .0 QO - - <0.5 <0.5 <br /> 09-24-04 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <I .0 <1.0 <1 .0 <10 - - <0.5 <0.5 <br /> 12-15-04 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <I .0 <1 .0 <1 .0 <10 - <0.5 <0.5 <br /> 03-25-05 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <I .0 <I .0 <1 .0 QO - - <0.5 <0.5 <br /> MW-8 06-29-05 <50 <0.5 <0.5 <0.5 <0.6 Q .0 Q .0 <1 .0 <1 .0 <10 - - <0.5 <0.5 <br /> (10'-25) 09- 12-05 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <1 .0 <1 ,0 <1.0 <10 - - <0.5 <0.5 _r <br /> 12- 15-05 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <1 .0 <1 .0 Q.0 <10 - - <0.5 <0.5 <br /> 03-08-06 <50 <0.5 <0.5 <0.5 <0.6 <1 -0 <1 .0 Q.0 <1 .0 <10 <0.5 <0.5 <br /> 06-08-06 <50 <0.5 <0.5 <0.5 <0.6 <L0 Q .0 Q.0 4 .0 <10 <0.5 <0.5 <br /> 09-I1-06 <50 <0.5 <0.5 <0.5 <0.6 <1 .0 <1 .0 <1.0 <1 .0 <10 <0.5 L.<0.5 <br /> Notes: <br /> pg/I: micrograms per liter TAME: tertiary-amyl methyl ether <br /> TPH-g total petroleum hydrocarbons quantified as gasoline TBA: tertiary-butyl alcohol <br /> MTBE: methyl tertiary-butyl ether EDB: 1,2-dibromoethane <br /> DIPE: di-isopropyl ether 1,2-DCA: 1,2-dichlomethane <br /> ETBE: ethyl tertiary-butyl ether <br /> Advanced GeoEnvironmental, Inc <br />