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<br /> Table 2
<br /> Fuel Oxygenates Analytical Data
<br /> Former BP Service Station No 11191
<br /> 1469 E Hammer Lane, Stockton, CA
<br /> Well Date Ethanol TBA MtBE DIPS EtBE TAME 1,2-DCA EDB
<br /> Number Sampled WIL) (pg/L) (pglL) (pg/L) (pglL) (pglL) (frg/L) (pglL) Comments
<br /> MW-1 1/23/2002 - 45 110 -- - -- ND<10 ND<10
<br /> 4/11/2002 - 10 37 -- -- - N0<10 ND<10
<br /> 7/31/2002 -- 2,900 9,300 - -- -- ND<10 ND<10
<br /> 10/11/2002 - -- 10,000 -- - - -- -
<br /> 01/30/2003 -- - 7,600 J - -- -- - ~
<br /> 04/10/2003 -- -- 4,900 -- -
<br /> 07/11/2003 <100,000 - 9,900 -- -- - ~ --
<br /> 10/17/2003 <50,000 <10 000 13 000 <500 <500 <500 - -
<br /> 01/26/2004 <20,000 <4,000 10,000 <200 <200 <200 - -
<br /> 04/27/2004 <50,000 <10,000 11,000 <500 <500 <500 -- --
<br /> MW-2 1/3/2002 - 800 1,900 -- -- - ND<10 ND<10
<br /> 1/10/2002 - 630 1,800 - - - N0<1 0 ND<1 0
<br /> 4/11/2002 -- 300 1,300 - -- -- ND<10 ND<10
<br /> 7/31/2002 -- 1,400 4,500 -- -- -- ND<10 ND<10
<br /> 10/11/2002 - -- 11,000 -- - _ -- -
<br /> 01/30/2003 -- - 4,900 J --
<br /> 04/10/2003 -- -- 3,900 J - - -- -07111/2003 <10 000 - 1,600 - -- -- - ~
<br /> 10117/2003 <50,000 <10,000 22,000 <500 <500 <500 - -
<br /> 01/26/2004 -20,000 <4,000 980 <200 <200 <200 - -
<br /> 04127/2004 <10,000 <2,000 2,800 <100 <100 <100 --
<br /> MW-3 1/3/2002 - 13,000 27,000 -- -- -- ND<10 ND<10
<br /> 4/11/2002 -- 3 500 18,000 - -- - ND<1 0 ND<1 0
<br /> 7/31/2002 - 14 000 30,000 - - -- ND<1 0 ND<1 0
<br /> 10/11/2002 - -- 44 000 -
<br /> 01/30/2003 -- -- 22,000 - - - -
<br /> 04/10/2003 -- -- 25,000 - -- - -- --
<br /> 07/11/2003 <100,000 - 10,000 -- -- - -- -
<br /> 10/17/2003 <100,000 <20,000 25 000 <1,000 <1,000 <1,000 -
<br /> 01I2612004 <50 000 <10 000 17,000 <500 <500 <500 -- -
<br /> 04/27/2004 <10,000 8,500 J 6,300 J <100 <100 <100 --
<br /> MW-4 1!312002 -- 8,000 9,400 -- - - Np<10 ND<10
<br /> 4/11/2002 2,300 11,000 - - ND<10 ND<10
<br /> Report Date July 21,2004 Page 1 of 3
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