ARCHIVED REPORTS XR0010019 - Laserfiche WebLink

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Table 2 Fuel Oxygenates Analytical:Data T� `ARCO Service Station No:21-30- 7906 N. EL Dorado Street, Stockton, CA Well Date Ethanol TBA MtBE DIPS EtBE TAME 1,2-DCA Methanol Number Sampled (,ug/L) (pg/L) WL) (Erg/L) (ug/L) (,ug1L) (Erg1L) (pg1L} Comments MS-1A 12/19/2002 NA NA NA NA NA NA- 03/06/2003 A 0310612003: i-<100- <20, s <0.50 -<0.50..,.: .<0.50,__ <0.50-- .. ._-. 06111/2003 <100 <20 0.55 <1.0 <1.0 <1.0 - - 09/24/2003 <100 <20 0.51 <1.0 <1.0 <1.0 -- 12/10/2003 <100 <20 0.58 <1.0 <1.0 <1.0 0.97 <100 03/09/2004 <100 <20 7.7 <1.0 <1.0 <1.0 0.87 <100 06/24/2004 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 <100 09/20/2004 <100 <20 <0.50 <1.0 <1.0 <1.0 1.1 -- 12/20/2004 -- - -- - -- - -- - Not Sampled 03/29/2005 <100 <20 <0.50 <1.0 <1.0 <1.0 0.79 -- 06/20/2005 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 0911212005 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 - MS-1 B 12/19/2002 NA <200 <0.50 <0.50 <0.50 <0.50 -- -- 03/06/2003 <100 <20 <0.50 <0.50 <0.50 <0.50 1.8 - 06/11/2003 <100 <20 <0.50 <1.0 <1.0 <1.0 -- -- 09/24/2003 <100 <20 0.62 <1.0 <1.0 <1.0 1 2/1 012 003 <100 <20 0.57 <1.0 <1.0 <1,0 0.96 <100 03/09/2004 <100 <20 8.9 <1.0 <1.0 <1.0 1.0 <100 06/24/2004 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 <100 09/20/2004 <100 <20 <0.50 <1.0 <1.0 <1.0 <0.50 -- 12/20/2004 -- - - - - -- -- -- Not Sampled 03/29/2005 <100 <20 <0.50 <1.0 <1.0 <1.0 <0.50 - 06/20/2005 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 -- 0911212005 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 -- MS-2A 12/19/2002 NA <200 0.79 <0.50 <0.50 <0.50 -- -- 03/06/2003 <100 <20 0.61 <0.50 <0.50 <0.50 0.53 - 06/11/2003 <100 <20 <0.50 UJ <1.0 <1.0 <1.0 - -- 09/24/2003 <100 <20 0.62 <1.0 <1.0 <1.0 -- -- 12/10/2003 <100 <20 0.60 <1.0 <1.0 <1.0 1.1 <100 03/09/2004 <100 <20 3.8 <1.0 <1.0 <1.0 2.2 <100 06/23/2004 <100 <20 <0.50 <0.50 <0.50 <0.50 <0.50 <100 09/20/2004 <100 <20 <0.50 <1.0 <1.0 <1.0 0.75 -- 12/20/2004 -- - -- -- - - -- - Not Sampled Report Date:October 21,2005 Page 1 of 15