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' TABLE 4
<br /> GROUNDWATER ANALYTICAL RESULTS
<br /> EPA METHOD 8260B
<br /> . Speedy Mart, 8200 N. Highway 99, Stockton, CA
<br /> Page 2 of 4
<br /> (results in ppb)
<br /> Sample ID Date MTBE DIPS ETRETAME TBA Ethanol Methanol 1,2-DCA EDB
<br /> MW4 10/12/99 52 <5 0 <5 0 <5 0 <50 NA NA NA NA
<br /> 06/13/00 300 <5 0 <5 0 <5 0 <50 <250 <500 <5 0 <5 0
<br /> 09/28/00 9,500 <50 <50 <50 <500 <2,500 <5,000 <50 <50
<br /> 02/05/01 20,000 <100 <100 <100 <1,000 <12,500 <25,000 <100 <100
<br /> 05/18/01 26,000 <500 <500 <500 <5,000 <62,500 <125,000 <500 <500
<br /> 08/16/01 32,000 <500 <500 <500 <5,000 <50,000 <100,000 <500 <500
<br /> 11/21/01 12,000 <1,000 <1,000 <1,000 <10,000 <50,000 <100,000 <1,000 <1,000
<br /> 03/21/02 14,000 <100 <100 <100 <1,000 <25,000 <50,000 <100 <100
<br /> 06/13/02 42,000 <200 <200 <200 <2,000 <25,000 <50,000 <200 <200
<br /> 09/13/02 18,000 <100 <100 <100 <1,000 <25,000 <50,000 <100 <100
<br /> 12/12/02 21,000 <200 <200 <200 <2,000 <1,000 <2,500 <200 <200
<br /> 03/13/03 17,000 <40 <40 <40 <400 <1,000 <2,500 <40 <40
<br /> 06/18/03 13,000 1 <400 <400 <400 <4,000 <20,000 <50,000 <400 <400
<br /> 09/11/03 1-3-,O-O-O-T <100 <100 <100 <1,000 -- -- <100 <100
<br /> MW5 10/24/00 55 <5 0 <50 <5 0 <50 <250 <500 <5 0 <5 0
<br /> 02/02/01 <2 0 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 05/17/01 23 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 08/15/01 <2 0 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 11/20/01 26 <2 0 <2 0 <2 0 <20 <250 1 <500 <2 0 <2 0
<br /> 03/20/02 24 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 06/12/02 45 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 09/12/02 68 <2 0 <2 0 <2 0 <20 <500 <500 <2 0 <2 0
<br /> 12/11/02 <2 0 <2 0 <2 0 <2 0 <20 <100 <250 <2 0 <2 0
<br /> 03/12/03 26 <2 0 <2 0 <2 0 <20 <100 <250 <2 0 <2 0
<br /> 06/17/03 18 <0 5 <0 5 <0 5 <5 0 <100 <250 <0 5 <0 5
<br /> 09/10/03 90 <0 5 <0 5 <0 5 <5 0 -- -- <0 5 <0 5
<br /> MW6 10/25/00 20,000 <100 <100 <100 <1,000 <5,000 <10,000 <100 <100
<br /> 02/05/01 9,400 <40 <40 <40 <400 <5,000 <10,000 <40 <40
<br /> 05/17/01 3,700 <20 <20 <20 <200 <2,500 <5,000 <20 <20
<br /> 08/15/01 780 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 11/20/01 3,700 <20 <20 <20 <200 <2,500 <5,000 <20 <20
<br /> 03/20/02 2,100 <20 <20 <20 <200 <2500 <5,000 <20 <20
<br /> 06/12/02 46 <2 0 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 09/12/02 2,800 <20 <20 <20 <200 <500 <1,000 <20 <20
<br /> 12/11/02 940 <20 <20 <20 <200 <100 <250 <20 <20
<br /> 03/12/03 14 <2 0 <2 0 <2 0 <20 <100 <250 <2 0 <2 0
<br /> 06/17/03 <0 5 <0 5 <0 5 <0 5 <5 0 <100 <250 <0 5 <0 5
<br /> 09/10/03 <0 5 <0 5 <0 5 <0 5 <5 0 -- -- <0 5 <0 5
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