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! ! • . <br /> Table 2 <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 2093 <br /> 3425 Tracy Blvd, Tracy, CA <br /> Well Date Ethanol TBA MtBE DIPE EtBE TAME 1,2-DCA EDB <br /> Number Sampled (Erg/L) {pgll-) (pg1L) (pg/L) (pg1L) (ug1L) (pg/L) (pg/L) Comments <br /> ATR-11 03/31/2003 <100 <20 <0 50 <0 50 <0 50 <0 50 -- — <br /> 06/0912003 — -- -- — _ _ <br /> 09/1812003 <100 <20 <0 50 <1 0 <1 0 <1 0 — — <br /> 12/24/2003 — — -- _ — _ <br /> 0 3/1 2120 04 <100 <20 <0 50 <0 50 <0 50 <0 50 — — <br /> 06/01/2004 -- -- — -- — -- — Not Sampled <br /> 09/20/2004 — — — -- — — Not Sampled <br /> 12/13/2004 -- -- -- — -- -- -- -- Not Sampled <br /> ATR-12 3/27/2001 -- <200 <2 00 <br /> 6/20/2001 -- — <2 0 <br /> 9/12/2001 -- <200 i - -- -- _ <br /> 12/19/2001 -- <20 <2 0 <br /> 3/14/2002 -- <50 <0 50 -- - -- <br /> 6/2812002 - <5 <0 5 <05 <0 5 <0 5 -- - <br /> 9/11/2002 -- <20 <05 <0 5 <0 5 <0 5 - -- <br /> 12/17/2002 -- <5 <0 5 <0 5 <0 5 <0 50 -- - <br /> 03/31/2003 <100 <20 <0 50 <0 50 <0 50 <0 50 - - <br /> 06/09/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 -- <br /> 09/18/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 - -- <br /> 12/24/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 — — <br /> 03/12/2004 <100 <20 1 <0 50 <0 50 <0 50 <0 50 -- — <br /> 06/01/2004 -- -- -- -- — -- -- — Not Sampled <br /> 09/20/2004 -- — - — -- — -- Not Sampled <br /> 12/13/2004 -- -- -- -- -- -- -- -- Not Sampled <br /> SMW-1 11/17/1997 — <500 500 <10 <10 - <br /> 12/15/1998 — — — -- — — -- Well no longer monitored <br /> TEX-1 6/20/2001 <br /> 9/12/2001 <br /> 12/19/2001 <br /> 3/14/2002 <br /> 6/28/2002 <br /> 9/11/2002 <br /> 12/17/2002 <br /> Report Date January 18,2005 Page 6 o!8 <br />