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<br /> TABLE 1
<br /> f CUMULATIVE RESULTS OF GROUNDWATER SAMPLING AND ANALYSES
<br /> QUIK STOP MARKET NO. 132
<br /> ' .IAS55 WEST HAMMER LANE
<br /> STOCKTON,CALIFORNIA
<br /> 1) Ethyl- Total Well Depth to Groundwater
<br /> Date TPI1-G Benzene Toluene benzene Xylenes MTBE CO2 Elevation Groundwater Elevation
<br /> Sampled (ug/L) OWL) (ug/L) (ug/L) (ug/L) (ug/L) (mg1L) (ft above MSL) (feet) (ft above MSL)
<br /> Well MW-5(conl'd)
<br /> 03!17/93 280 <0.50 <0.50 0.6 0.7 12.85 -9.47
<br /> 06/18/93 500 1 <0.50 <0.50 <0.50
<br /> ( l 12.36 -8.98
<br /> f 12/17/93 <50 <0.50 <0,50 <0.50 <0.50 13,2 -9,82
<br /> 03/25/94 <50 <0.50 <0.50 <050 <0.50 12,82 -9.44
<br /> 1' 06/21/94 <50 <0.50 <0.50 <0.50 <0,50 12.69 .9.31
<br /> 1
<br /> 1 08/02/94 53 <0.50 <0.50 <0.50 <0.50 12.85 -9.47
<br /> 09/13/94 <50 <0.50 <0.50 <0.50 <0.50 13.14 -9.76
<br /> 12/09/94 56 <0.50 <0,50 <0.50 <0.50 13.74 -10.36
<br /> 02/22/95 <50 <0.50 <0,50 <0.50 <0.50 12.18 -8.80
<br /> 03/16/95 <50 <0.50 <0.50 <0,50 <0.50 11.37 -7.99
<br /> 05/26/95 <50 <0.50 <0.50 <0.50 <0.50 NR NR
<br /> ' 06/22/95 <50 <0,50 <0.50 <0.50 <0.50 11.36 -7.98
<br /> 09/26/95 <50 <0.50 <0.50 <0.50 <0,50 790 12.35 -8.97
<br /> 12!21/95 <50 <0.50 <0.50 <0.5D <0.50 750 12.24 -8.86
<br /> 03/06/96 <250 <2,50 Q.50 <2.50 <2.50 1,100 670 10.67 -7.29
<br /> 06/04/96 <125 <1.2 <1.2 <1.2 <1.2 660 NR 10.25 -6.87
<br /> 09/17/96 CSO <0.5 <0.5 <0,5 <0.5 510 NR 11.2 -7.82
<br /> i
<br /> 12/09/96 <50 <0.5 <0.5 <0.5 <0.5 350 NR 11.29 -7.91
<br /> 02/11/97 <50 <0.5 <0.5 <o.5 <0.5 340 NR 8.75 -5.37
<br /> 06/09/97 <50 <0.5 <0.5 <0.5 <0.5 220 NR 9.66 -6.28
<br /> 09/03/97 <10 <0.5 <0.5 <0.5 <0.5 1,100 NR 3.38 10,34 -6.96
<br /> t,1 12/04/97 <50 <0.5 <0.5 <0.5 <0.5 880 NR 10.75 -7.37
<br /> 03/10/98 <50 <0.5 <0.5 <0.5 <0.5 1,400 NR 6.95 -3.57
<br /> 06/08/98 <50 <0.5 <0.5 <0.5 <0.5 1,600 NR 7.76 4.38
<br /> 09/22/98 <50 <0.5 <0.5 <0.5 <0.5 2,100 NR 9.25 -5.87
<br /> ( 12/03/98 <50 <0,5 <0.5 <0.5 <0.5 2,500 NR 9,48 -6,10
<br /> 03/17/99 <50 <0.5 <0.5 <0.5 <0.5 1,970 NR 8.84 -5.46
<br /> +, 06/07/99 4,700 <25 <5 <25 <25 2,900 NR 8.40 -5.02
<br /> 09/02/99 1,700 5,0 <2.5 <2.5 Q.5 7,800 NR 9.48 -6,10
<br /> 12/09/99 4,600 <25 32 <25 55 6,300 NR 10.02 -6.64
<br /> 03/27/00 2,500 <12.5 <12.5 <12.5 <12.5 7,000 NR 7.36 -3.98
<br /> 06/15/00 <5000 <50 <50 <50 <50 5,500 NR 8.21 4,83
<br /> tl 1 09/18/00 3,100 <10 <10 <10 <10 2,500 NR 9.39 -6.01
<br /> 11/30/00 2,700 27 39 <25 <25 3,400 NR 9.84 -6.46
<br /> 02/23/01 2,800 <0.5 <0.5 <0.5 64 3,400 NR 9.75 -6.37
<br /> i 05/22/01 1,000 <10 <10 <10 <10 2,000 NR 9.00 -5.62
<br /> 08/23/01 1,600 <10 <10 QO <10 2,400 NR 10.02 -6.64
<br /> 11/30/01 <1000 <20 QO <20 <20 2,800 NR 10.58 -7.20
<br /> 02/27/02 <1000 <10 <10 <10 <20 2,200 NR 9.70 -6.32
<br /> 05/31/02 <500 <5.0 <5.0 <5.0 <10 1,500 NR 9.55 -6.17
<br /> 08/30/02 <2500 <25 <25 <25 <50 2,200 NR 10.36 -6.98
<br /> 11/19/02 <2500 <25 <25 <25 <50 2,100 NR 10.84 -7.46
<br /> 03/06/03 1600^ <10 <10 <10 <20 1,800 NR 10.58 -7.20
<br /> 05/28/03 <1000 <10 <10 <10 <20 2,200 NR 10,39 -7.01
<br /> 1,
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