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i <br /> i <br /> Table 2 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 2130 <br /> 7906 N EL Dorado Street, Stockton, CA <br /> Well Date I Ethanol TBA MtBE DIPS EtBE TAME 1,2-DCA Methanol <br /> Number Sampled WL) (pg1L) WtL) (pg/L) (mg/L) (pg/L) (pg/L) (pg/L) Comments <br /> VW-7 03/06/2003 <100 83 11 <5 0 <50 <5 0 320 06/11/2003 <100 <20 054 <1 0 <1 0 <1 0 — -- <br /> 09/24/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 -- — <br /> 12/10/2003 <500 <100 91 <5 0 <5 0 <5 0 160 <100 <br /> 03/08/2004 <500 <100 63 <5 0 <5 0 <5 0 64 <100 <br /> 06/24/2004 <100 <20 1 1 <0 50 <0 50 <0 50 16 <100 <br /> 09/20/2004 <100 <20 12 <10 <10 <10 20 -- <br /> 12/20/2004 <100 100 13 <1 0 <1 0 <1 0 210 J -- <br /> 03/28/2005 <1,000 <200 95 <10 <10 <10 280 — <br /> 0612012005 1 <100 1 25 1 3 0 J <0 50 <0 50 <0 50 72 -- <br /> VW-8 12/19/2002 NA <10 <10 <10 <10 <10 -- — <br /> 03/06/2003 <500 <20 10 <2 5 <2 5 <2 5 60 — <br /> 06/11/2003 <500 <100 <2 5 <5 0 <50 <5 0 — -- <br /> 09/24/2003 <1 000 <200 <5 0 <10 <10 <10 — - <br /> 12/10/2003 <100 <20 49 <1 0 <1 0 <1 0 19 <100 <br /> 03/08/2004 <500 <100 <2 5 <5 0 <5 0 <50 <25 <200 <br /> 06/24/2004 <500 <100 28 <2 5 <2 5 <2 5 300 <100 <br /> 09/20/2004 <10,000 <2,000 <50 <100 <100 <100 <50 -- <br /> 12/21/2004 <1,000 <200 <5 0 <10 <10 <10 50 -- <br /> 03/27/2005 <5,000 <1,000 <25 <50 <50 <50 <25 — <br /> 0611912005 <2,500 1 <500 1 <12 1 <12 <12 <12 <12 — <br /> VW-9 03/06/2003 -- — — — — — -' <br /> 12/10/2003 — -- — -- — - — -- Well Dry <br /> 03/08/2004 — — -- — -- — — -- Well Dry <br /> 06/23/2004 — — — -- — — -- — Well Dry,Not Sampled <br /> 09/20/2004 -- — - — -- — — — Well Dry Not Sampled <br /> 12/20/2004 — — — -- -- - — — Not Sampled,Well Dry <br /> 03/28/2005 -- <br /> 06119/2005 <br /> VW-10 12/19/2002 NA <100 <10 <10 <10 <10 — — <br /> 03/06/2003 <10,000 <2 000 <50 <50 <50 <50 <50 - <br /> 06/11/2003 <5,000 <1,000 <25 <50 <50 <50 — -- <br /> 09/24/2003 <1,000 <200 <5 0 <10 <10 <10 - — <br /> Report Date July 27, 2005 Page 12 of 14 <br />