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Table 2
<br /> Fuel Oxygenates Analytical Data
<br /> ARCO Service Station No 2186
<br /> 3212 N California Street, Stockton, CA
<br /> Well Date Ethanol TBA MtBE RIPE EtSE TAME 1,2-DCA EDB Methanol
<br /> Humber Sampled (uglL) (uglL) (ug1L) (fig/l.) (.pg/L) (411L) (pg/L) (fig/L) (fig/L) Comments
<br /> MW-1 11/20/1997 -- <100 78 <20 <20 <20 - - - No FP,No S
<br /> 2117/1998 NA NA NA NA NA - -- No FP,No S
<br /> 6/24/1998 - <200 39 <20 <20 <2 0 - -- -- No FP,No S
<br /> 9/21/1998 - <2000 138 <20 <20 <2 0 - No FP, No S
<br /> 12/14/1998 - <200 228 <20 <20 <2 0 - -- -- No FP,No S
<br /> 12/14/1998 - <200 314 <20 <20 <20 - - - [D],No FP, No S
<br /> 3/31/1999 - <200 392 <20 <20 <20 - -- - No FP,No S
<br /> 6/11/1999 - <200 628 <2 0 <20 <2 0 - -- -- No FP,No S
<br /> 9/10/1999 - <400 800 <4 0 <4 0 812 - - - No FP,No S
<br /> 12/3/1999 <400 984 <4 0 <40 892 - - -- No FP,No S
<br /> 4/3/2000 - <200 281 <2 0 <20 246 - - No FP No S
<br /> 6/22/2000 -- <200 114 <2 0 <20 <2 0 - - -- No FP,No S
<br /> 9/27/2000 - 355 4,500 <2 0 <20 338 - - - No FP,No S
<br /> 12/20/2000 - <200 1,870[1] <2 0 <20 175 - - - No FP,No S
<br /> 3/16/2001 - <200 2 190[1] <2 0 <20 246 _ - - No FP,No S
<br /> 6/21/2001 -- <14,000 28,000 <290* <290* <290* - - - No FP,No S
<br /> 9/13/2001 -- <2,500 4,500 <50 <50 <50 - - -- No FP,No S
<br /> 12/11/2001 - 1,100 8,800 <2 0 <20 72 - - No FP,No S
<br /> 3/14/2002 - <2,500* 4,700 <250* <250* <250* - - - No FP,No S
<br /> 6/19/2002 - <5,000 17,000 <500 <500 <500 <500 - - No FP,No S
<br /> 9/12/2002 <4,000 <500 3,100 <50 <50 <50 85 <50 - No FP,No S
<br /> 12/3/2002 - <2,000 3,100 <50 <50 <50 80 - - No FP,No S
<br /> 03/11/2003 <10,000 <2,000 3,200 <50 <50 <50 <50 -- --
<br /> 06/09/2003 <25,000 <5,000 10,000 <250 <250 <250 <120 - -
<br /> 09/17/2003 <10,000 <2,000 3,600 <100 <100 <100 <50 - -
<br /> 12/11/2003 <5,000 <1,000 3,200 J <50 <50 <50 <25 - --
<br /> 03/10/2004 <25 000 <5,000 6,400 J <250 <250 <250 <120 - -
<br /> 06/17/2004 <10,000 <2,000 3,100 <100 <100 <100 <50 - <400
<br /> 09/23/2004 <500 <100 80 <5 0 <5 0 <50 <2 5 <2 5 <100
<br /> 12/21/2004 <2 500 <500 340 <25 <25 <25 <12 <12 <100
<br /> 03/3012005 <2,000 <400 880 <20 <20 <20 <10 <10 -
<br /> MW-2 6/24/1998 -- <200 33 <2 0 <2 0 <2 0 -- - - No FP,No S
<br /> 9/21/1998 - <200 <2 0 <20 <2 0 <2 0 - No FP,No S
<br /> Report Date April 25, 2005 Page i of 9
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