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i • i <br /> Table 2 <br /> Fuel Oxygenates Analytical Data <br /> Former ARCO Service Station No 4493 <br /> 205 N Center Street, Stockton, CA <br /> Well Date Ethanol TBA MtBE DIPE EtBE TAME 1,2-DCA EDB PCE Methanol <br /> Number Sampled (vg/L) (pg/L) (pg/L) (pg/L) (pg/L) (erg/L) (pg/L) (pg/L) (erg/L) (pg/L) Comments <br /> MW-3 6/28/2002 — <50 <05 <05 <0 5 <0 5 <0 5 <0 5 - — <br /> 9/16/2002 — <20 069 <0 5 <05 <0 5 <05 <0 5 -- -- <br /> 1215/2002 <40 <20 <0 5 <0 5 <0 5 <0 5 <05 <0 5 — — <br /> 03/14/2003 <100 <20 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 06/09/2003 <100 <20 <10 <10 <10 <10 <10 <10 <10 — <br /> 09/25/2003 <100 <20 <10 <10 <10 <10 <10 <10 <10 <br /> 12/23/2003 <100 <20 <10 <10 <10 <10 <10 <10 <10 — <br /> 03/08/2004 <100 <20 <10 <10 <10 <10 <10 <10 <10 -- <br /> MW-4 6/19/2000 — 225 <2 0 <300 <2 0 <2 0 <2 0 <2 0 — <br /> 9/19/2000 -- <200 1,710 <2 0 <2 0 <2 0 <2 0 <2 0 -- — <br /> 11/30/2000 -- <200 427 <2 0 <2 0 <2 0 <2 0 <2 0 — — <br /> 9/13/2001 — <2,000 680 <20 <20 <20 <20 <20 -- — <br /> 12/31/2001 — <5 0 <05 <0 5 <0 5 <0 5 <0 5 <05 -- — <br /> 3/13/2002 -- 33 1 120 <0 5 1 <0 5 <0 5 <0 5 <0 5 -- — <br /> 6/28/2002 — 17 130 <10 <10 <10 <10 <10 -- — <br /> 9/16/2002 -- <100 150 <2 5 <2 5 <2 5 <2 5 <2 5 — — <br /> 12/5/2002 <200 <100 140 <2 5 <2 5 <2 5 <2 5 <2 5 -- — <br /> 03/14/2003 <500 <100 180 <2 5 <2 5 <2 5 <2 5 <25 <2 5 — <br /> 06/09/2003 <2,500 <500 130 <25 <25 <25 <25 <25 <25 — <br /> 09/25/2003 <500 <100 93 <5 0 <5 0 <5 0 <5 0 <50 <5 0 <br /> 12/23/2003 <1,000 <200 81 <10 <10 <10 <10 <10 <10 — <br /> 03/08/2004 <500 <100 74 <5 0 <5 0 <5 0 <5 0 <5 0 <50 — <br /> MW-5 6/19/2000 — <200 <2 0 <300 <2 0 <2 0 <2 0 <2 0 -- — <br /> 9/19/2000 — <200 <2 0 <2 0 <2 0 <20 <2 0 <2 0 — — <br /> 11/30/2000 -- <200 1 <2 0 <2 0 1 <2 0 <2 0 <2 0 <2 0 -- — <br /> 9/13/2001 — <200 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 -- — <br /> 12/31/2001 — <5 0 60 <0 5 <0 5 <05 <0 5 <0 5 — — <br /> 3/13/2002 -- 23 200 <05 <0 5 <0 5 <0 5 <0 5 -- — <br /> 6/28/2002 -- 34 1,100 <10 <10 <10 <10 <10 — — <br /> 9/16/2002 — <400 750 <10 <10 <10 <10 <10 -- -- <br /> 12/5/2002 <800 <400 180 <10 <10 <10 <10 <10 — <br /> 03/14/2003 <500 <100 190 <2 5 <2 5 <2 5 <2 5 <2 5 <25 -- <br /> 06/09/2003 <500 UJ <100 UJ 130 J <5 0 UJ <5 0 UJ <5 0 UJ <5 0 UJ <5 0 UJ <5 0 UJ — <br /> 09/25/2003 <200 <40 49 <2 0 <2 0 <2 0 <2 0 <20 <20 -- <br /> Report Date May 10,2004 Page 2 of 5 <br />