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• T92 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, Stockton, CA <br /> Well Date Ethanol TBA MtBE DIPE EtBE TAME 1,2-DCA Methanol <br /> Number Sampled (pg/L) Grg/L) (pg/L) (pg/L) (pglL) (pg/L) (pg/L) (pg/L) Comments <br /> VW 1 06/24/2004 <1,000 <200 <5 0 <5 0 <50 <50 470 <100 <br /> 09/20/2004 <5,000 <1,000 27 <50 <50 <50 <25 -- <br /> 12/20/2004 <100 <20 13 <1 0 <1 0 <1 0 23 <br /> 03/28/2005 <100 22 98 <1 0 <1 0 <1 0 064 <br /> 06/19/2005 <500 UJ <100 4 8 J <2 5 <2 5 <2 5 <2 5 <br /> 09/12/2005 <2,000 <400 <10 <10 <10 <10 <10 <br /> 12/11/2005 <500 UJ <100 <2 5 <2 5 <2 5 <2 5 <2 5 — <br /> VW-2 12/19/2002 NA <0 50 <0 50 054 <0 50 <0 50 -- <br /> 03/06/2003 <100 <20 <0 50 <0 50 <0 50 <0 50 22 <br /> 06/11/2003 <100 <20 <050 <10 <10 <10 - <br /> 09/24/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 - <br /> 12/10/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 48 <100 <br /> 03/08/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 28 <100 <br /> 06/24/2004 <100 <20 10 <0 50 <0 50 <0 50 16 <100 <br /> 09/20/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 32 <br /> 12/21/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 25 <br /> 03/27/2005 <500 <100 <2 5 <5 0 <5 0 <5 0 15 <br /> 06/19/2005 <100 UJ <20 <0 50 <0 50 <0 50 <0 50 70 - <br /> 09/11/2005 <100 <20 <0 50 <0 50 <0 50 <0 50 36 <br /> 12111/2005 <100 UJ <20 <0 50 <0 50 <0 50 <0 50 27 -- <br /> VW-3 12/19/2002 NA <0,50 89 <0 50 <0 50 <0 50 -- <br /> 03/06/2003 <100 <20 14 <0 50 <0 50 <0 50 1 3 <br /> 06/11/2003 <100 <20 26 <1 0 <1 0 <1 0 <br /> 09/24/2003 <100 <20 54 <1 0 <1 0 <1 0 - <br /> 12/10/2003 <100 <20 50 <1 0 <1 0 <1 0 20 <100 <br /> 03/08/2004 <100 <20 191 <1 0 <1 0 <1 0 1 3J <1,500 <br /> 06/24/2004 <100 <20 <0 50 <0 50 <0 50 <0 50 <0 50 <100 <br /> 09/20/2004 <100 <20 44 <1 0 <1 0 <1 0 0_82 <br /> 12/20/2004 <100 <20 069 <1 0 <1 0 <1 0 1 4 <br /> 03/28/2005 <100 <20 19 <1 0 <1 0 <1 0 <0 50 <br /> 06/19/2005 <100 <20 1 4 J <0 50 <0 50 <0 50 050 <br /> 09/11/2005 <100 <20 10 <0 50 <0 50 <0 50 1 2 <br /> 12111/2005 <100 UJ <20 <0 50 <0 50 <0 50 <0 50 1 3 -- <br /> ReportDate January25,2006 Page 11 of 16 <br />