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CAMARA <br /> Table 1. Groundwater Analytical Data -Additional Constituents- Shell-branded Service Station, Incident#98995643, 1071 North Main Strt <br /> Manteca, California <br /> MTBE MTBE <br /> Sample Date 1,2-DCA EDB by 8020 by 8260 Ethanol TBA DIPE ETBE TAME Methanol D O <br /> ID Sampled 4 -- (Concentrations in b) m <br /> 07/22/99 <0 500 <0 500 449 343 <500 <100 <2 00 <2 00 <2 00 <1,000 1 3 <br /> 10/13/99 <0 500 <0 500 <2 50 <2 00 <500 <100 <2 00 <2 00 <2 00 <1,000 45 <br /> 01/06/00 <0 500 <0 500 <2 50 <2 00 <1,000 <200 <2 00 <2 00 <2 00 <1,000 29 <br /> 04/11/00 <1 00 <1 00 468 176 <200 <20 0 <1 00 <1 00 <1 00 <1,000 26 <br /> 07/27/00 <0 500 <1 00 <2 50 <1 00 <400 <20 0 <1 00 <1 00 <1 00 <1,000 40 <br /> 10/10/00 <10 0 <10 0 472 350 <2,000 <400 <20 0 <20 0 <20 0 <1,000 22 <br /> 01/23/01 <0 60 -- --- 340 <0 60 230 <0 60 <0 60 068 <60 22 <br /> Abbreviations Notes <br /> 1,2-DCA—1,2-dichloroethane by EPA Method 8010 a=Sample re-analyzed past hold time,results should be considered estimates <br /> EDB=Ethylene dtbromtde(1,2-dibromoethane)by EPA Method 8010 <n=Below detection limit of n ppb <br /> MTBE—Methyl tert-butyl ether by EPA Methods 8020 and 8260 ---=Not analyzed <br /> TBA=Tert-butyl alcohol by EPA Method 8260 <br /> DIPE=Di-isopropyl ether by EPA Method 8260 <br /> ETBE= Ethyl tent-butyl ether by EPA Method 8260 Methanol by modified EPA Method 8015 <br /> TAME—Tert-amyl methyl ether by EPA Method 8260 Ethanol and t-Butanol by EPA Method 8260 <br /> D O =Dissolved oxygen,measured post-purge <br /> ppb=Parts per billion <br /> ppm=Parts per mtllton <br /> dup=Duplicate sample <br /> g% a H07 q.gma s 2 of 2 <br />