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0 0 <br /> CA RIA " <br /> Table 1.Additional Groundwater Analytical Data,Shell-branded Service Station, 1071 North Main Street,Manteca,California <br /> Sample Date MTBE 8020 MTBE 8260 DIPE ETBE TAME TBA 1,2-DCA EDB Methanol Ethanol <br /> ID Sampled ( ) ( ) ( ) ( ) (tt ) ()Ag/1) (Lo) ( /l) ( ) ( Il) <br /> MW-3 23-Jan-01 NA 340 <0 60 <0 60 068 230 <0 60 NA <60 <0 60 <br /> MW-3 26-Apr-01 NA <5 00 <5 00 <5 00 <5 00 <200 <5 00 <5 00 NA <500 <br /> MW-3 11-Jul-01 NA 150 <2 0 <2 0 <2 0 110 <2 0 <2 0 <1,000 <500 <br /> MW-3 25-Oct-01 NA <0 50 <2 0 <2 0 <2 0 <50 <2 0 <2 0 NA <500 <br /> MW-3 15-Jan-02 NA <5 0 <50 <50 <5 0 <50 <2 0 <2 0 NA <500 <br /> MW-3 11-Apr-02 NA 13 <2 0 <2 0 <2 0 <50 <2 0 <2 0 NA <500 <br /> MW-3 29-Jul-02 NA <0 50 <2 0 <2 0 <2 0 <50 <2 0 <2 0 NA <500 <br /> MW-3 09-Oct-02 NA 068 <2 0 <2 0 <2 0 <50 <2 0 <2 0 NA <500 <br /> MW-3 07-Jan-03 NA <0 50 _ <20 <20 <2 0 <50 <2 0 <2 0 NA <500 <br /> Abbreviations and Notes <br /> NA=Not analyzed or not available <br /> <x=Not detected at reporting limit x <br /> jig/l=Micrograms per Mer(parts per billion) <br /> 1 2-DCA=1,2-dichloroethane by EPA Method 8010 or 8260 <br /> EDB=Ethylene dibromide(1,2-dibromoethane)by EPA Method 8010 or 8260 <br /> MTBE=Methyl tert-butyl ether by EPA Methods 8020 and 8260 as indicated <br /> TBA=Tertiary butyl alcohol(t-butanol)by EPA Method 8260 <br /> DIPE=Di-isopropyl ether by EPA Method 8260 <br /> ETBE= Ethyl tertiary butyl ether by EPA Method 8260 <br /> TAME=Tertiary amyl methyl ether by EPA Method 8260 <br /> dup=Duplicate sample <br /> a=Sample re-analyzed past hold time results should be considered estimates <br /> Methanol by modified EPA Method 8015 or equivalent <br /> Ethanol by EPA Method 8260 <br /> 0323 Page 3 of 3 <br />