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• CAMBRIA <br /> Table 1. Sampling Program-Shell-branded Service Station,3011 West Benjamin holt Drive,Stockton,Calif erma <br /> D1PE,TAME, <br /> Well Frequency TPilg BTEX MTBE TBA Ethanol 1,2-DCA Acetone &ETBE Methanol EDB <br /> Core Wells <br /> MW-1 Quarterly X x X X X X X <br /> x x x <br /> Annually <br /> MW-2 Quarterly X % x x x x X x X X <br /> Annually <br /> MW-5 Quarterly X x x x x x % x x x <br /> Annually <br /> MW-6 Quarterly x x x x x X x x X X <br /> Annually <br /> MW-10 Quarterly x x x x x x X x x x <br /> Annually <br /> MW-11 Quarterly X x % % x x x x X X <br /> Annually <br /> MW42 Quarterly x X X x X X X x x X <br /> Annually <br /> MW-13 Quarterly x x x x X x X <br /> x x x <br /> Annually <br /> Peripheral Wells <br /> x <br /> MW-1-49 Annually x x x x x x x x <br /> x <br /> MW-1-82 Annually X % x x x x <br /> MW-2-50 Annually x % <br /> MW-2-E2 Annually X % % X x x X X X X <br /> MW-3 Annually x x x % x x x x x X <br /> MW4 Annually x x x x X x x x x X <br /> MW-7 Annually X x x X x X X <br /> MW.8 Annually x x X x x x x <br /> MW-9 Annually X x x X x X x x x X <br /> Requested Detection Limit 50 0.5 0.5 5.0 NS NS NS 0.5 NS NS <br /> (in Pgd) <br /> Standard Reporting Limits 50 0.5' 0.5 5.0 50 0.5 50 2.0 500 0.50 <br /> (in AO) <br /> Abbreviations and Notes: <br /> TPHg=Total petroleum hydrocarbons as gasoline. <br /> BTEX=benzene,toluene,ethylbenzene,&xylenes <br /> TBA=Tertiary bury)alcohol, DIPS=di-isopropyl ether, ETBE=ethyl tertiary butyl ether,TAME=tenacy amyl methyl ether,MTBE Methyl tertiary butyl enter <br /> NS-Not specified. No specific detection limit mentioned in SJCEHD's September 7,2004 letter. <br /> *=The reporting limit for xylenes is typically 1.0µg/1. <br /> pg/L=micrograms per liter <br /> 1015 Page 1 of 1 <br />