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<br /> "; , TABLE 4
<br /> GROUNDWATER ANALYTICAL RESULTS
<br /> . EPA METHOD 8260B
<br /> Speedy Mart, 8200 N. Highway 99, Stockton, CA
<br /> Page 1 of 3
<br /> (results in ppb)
<br /> Sample ID Date MTBE DIPS L ETRE TAME TBA Ethanol Methanol 1,2-DCA EDB
<br /> MW1 10/12/99 44,000 <100 <100 180 <1,000 NA NA NA NA
<br /> 06/13/00 5,500 <100 <100 <100 <1,000 <5,000 <10,000 <100 <100
<br /> 09/28/00 3,900 <500 <500 <500 <5,000 <25,000 <50,000 <500 <500
<br /> 02/05/01 12,000
<br /> -200 <200 <200 <2,000 45 000 <50,000 <200 <200
<br /> 05/18/01 18,000 <400 <400 <400 <4,000 <50,000 <100 000 <400 <400
<br /> 08115101- Not Sampled-Free Product Present
<br /> 03/12/03
<br /> 06/18/03 28,000 <20 <20 45
<br /> -200 I <11.000 <2,500 <20 <20
<br /> MW2 10/12/99 61 <50 <50 <5 0 <50 NA NA NA NA
<br /> 06/13/00 <50 <50 <50
<br /> <5 0 <50 <250 <500 <50 <5 0
<br /> 09/28/00 <5 0 <50 <5 0 <5 D <50 <250 -500 <50 <5 0
<br /> 02!05101 <2 0 <20 <2 0 <2 0 <20 <250 <500 <2 D <20
<br /> 05/17/01 <20 <20 <2 0 <2 0 <20 <250 <500 <2 0 <2 0
<br /> 081150 70 4 0 <20 <2 0 QO
<br /> -250 <500 <2G <2 0
<br /> <
<br /> 11/20/01 52 <2 0 <20 2 0 <20 <250 <500 <20 <20
<br /> 2 0
<br /> 03/21/02 <2 0 <2 0 < <2 0 <20 <250 <500 <20 <20
<br /> 06/13/02 16 <2 0 <2 0 <20 <20 <250 <500 <20 <2 D
<br /> 20
<br /> 09/12/02 460 < <20 <20 <200 <250 <500 <20 <20
<br /> 12111/02 230 <2 0 <20 <20 <20 <100 <250 <20 1 <2 0
<br /> 03/12/03 150 <2 0 <20 <20 <20 <100 <250 <20 <2 0
<br /> 06/18/03 170 <0 5 <05 <05 <5 0 <100 <250 <0 5 <0 5
<br /> MW3 10/12/99 39,000 <200 <200 <200 <2,000 NA NA NA NA
<br /> 06113100 2,800
<br /> <50 <50 <50 <500 <2,500 <5,000 <50 <50
<br /> 50
<br /> 09128!00 7,500 < <50 <50 <500 <2,500 <5,000 <50 <50
<br /> 02/05/01 7,300 <40 <40 <40 <400 <5,000 <10,000 <40 <40
<br /> 05/18/01 1,100
<br /> <50 <5 0 <5 0 <50 <625 <1,250 <5 0 <5 0
<br /> 08/16/01 2,000 <100 <100 <100 <1,000 <12,500 <25,000 <100 <100
<br /> 11/21/01 4,900 <100 <100 <100 <1,000 <12,500 <25,000 <100 <100
<br /> 03/21/02 740 <10 <10 <10 <100 <2,500 <5 000 <10 <10
<br /> 06/13/02 4,100
<br /> <2 0 <2 0 <2 0 <20 <250 <500 <20 <20
<br /> 09/12/02 15,000 <100 <100 <100 <1,000 <12,500 <25,000 <100 <100
<br /> 12/12/02 12,000 <200 <200 <200 -2,000 <1,000 <2,500 1 <200 <200
<br /> 03/13/03 7,900 <40 <40 <40 <400 <1,000 <2,500 1 <40 <40
<br /> 06/18/03 6,600 <200 <200 400 <2.0 0 <10,000 <25.000 1 <200 <200
<br /> MW4 10/12/99 52 <50 <5 0 <50 <50 NA NA NA NA
<br /> 06113!00 300 <50 <50 <5 0 <50 <250 <500 <5 0 <50
<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 4,000 <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 /> 09113!02 18,000 <100 <100 <100 <1,000 <25,000 <50000 <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 -400 <40D <40D <4 000 <20 DOD <50 000 -400 <400
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