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! i 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 Ethanol TBA MtBE DIPE EtBE TAME 1,2-DCA Methanol <br /> Number Sampled (1,g/L) (WglL) {1rg/L) (pg/L) (pg/L) (Erg1L) (pg/L) (uglL) Comments <br /> MW-6 6/26/1998 NA <100 <2 <2 <2 <2 — -- <br /> 9/1/1998 NA <100 <2 <2 <2 <2 — — <br /> 12/2/1998 NA <200 <2 <2 <2 <2 - <br /> 3/31/1999 NA <200 22 <2 <2 <2 -- — <br /> 6/4/1999 NA <200 37 <2 <2 <2 <br /> 9/2/1999 NA <200 <2 <2 <2 <2 11/29/1999 NA <200 <2 <2 <2 <2 <br /> 6/26/2000 NA <100 <2 <2 <2 <2 — -- <br /> 9/28/2000 NA <200 <2 <2 <2 <2 —12/1912000 NA <200 <2 <2 <2 <2 <br /> 3/15/2001 NA <200 <2 <2 <2 <2 -- -- <br /> 6/20/2001 NA <100 <2 <2 <2 <2 — — <br /> 9/12/2001 NA <200 <2 <2 <2 <2 — -- <br /> 12/12/2001 NA <5 0 <0 50 <0 50 <0 50 <0 50 -- — <br /> 3/13/2002 NA <5 0 <0 50 <0 50 <0 50 <0 50 — - <br /> 6/18/2002 NA <5-0 <0 50 <0 50 <0 50 <0 50 -- - <br /> 9/11/2002 NA <5 0 <0 50 <0 50 <0 50 <0 50 — -- <br /> 12/18/2002 NA <50 <0 50 <0 50 <0 50 <0 50 -- — <br /> 03/06/2003 <100 <20 <0 50 <0 50 <0 50 <0 50 93 — <br /> 06/11/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 -- — <br /> 09/23/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 — - <br /> 12l0912003 <200 78 91 <2 0 <2 0 <2 0 140 <100 <br /> 03/09/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 21 <100 <br /> 0612412004 <100 <20 <0 50 <0 50 <0 50 <br /> <0 50 066 <100 <br /> 09/20/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 15 — <br /> 12/20/2004 <100 <20 <0 50 <1 0 <10. <1 0 12 — <br /> MW-7 11/19/1997 NA NA NA NA NA NA — — <br /> 3/5/1998 NA <100 <2 <2 <2 <2 NA -- <br /> 6/26/1998 NA <100 <2 <2 <2 <2 — — <br /> 9/1/1998 NA <100 <2 <2 <2 <2 — '- <br /> 12/2/1998 NA <200 <2 <2 <2 <2 — — <br /> 3/31/1999 NA <200 <2 <2 <2 <2 — — <br /> 6/4/1999 NA <200 <2 <2 <2 <2 - — <br /> 9/2/1999 NA <200 <2 <2 <2 <2 — - <br /> Report Date January 31,2005 Page 7 of 13 <br />