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<br /> Table 1. Analytical Results.-Groundwater Samples,
<br /> April 1987 through January 1990,ARCO
<br /> Station 434,Lodi,California
<br /> Concentrations,
<br /> micrograms per liter
<br /> Water TPH,
<br /> Monitoring surface tttilEigrarns
<br /> well number Dale elevation Benvne Ethylbenzcne Toluene Xylene per liter
<br /> W-1 4/87 -6.06 120 <1.0 <1.0 <1.0 120
<br /> 7187 •10.31 180 <2.5 200 190 <0.9
<br /> 13/87 -11.39 1,600 1,400 2,300 6.900 147.2
<br /> f 1189 -13.70 3,680 130 740 2,280 c
<br /> 4189 -11.60 2,920 <50 1,050 2,830
<br /> 7/89 -16.54 1,140 16 310 685 --
<br /> ? 1089 -17.13 NS NS NS NS NS
<br /> 1190 - NS NS NS NS NS
<br /> i W-2 4187 -6.21 4,100 680 9.200 5,500 64
<br /> 787 -11,48 14,000 2,304 25,004 15,000 281.7
<br /> 11/87 -1155 6,200 5,600 5,300 13,000 343.9
<br /> 618E -13.86 3,570 755 3,900 3,000 ..
<br /> 9-1088 -16.29 260 110 500 410 --
<br /> 1189 -13.91 4,400 510 4,540 2,740 --
<br /> _ 4189 -12.27 4,200 450 110 2,620 --
<br /> 7189 -16.36 2,090 200 1,500 11150
<br /> 10/89 -17.31 496 87 206 219
<br /> t 1190 -14.96 3,500 470
<br /> 4,500 5,400 IS
<br /> W-2A 6188 •8.39 437 140 937 672
<br /> 9-1088 -16,21 55.8 6.4 16.3 133
<br /> 1189 -13.68 760 11 220 214
<br /> 4/89 -12.14 700 78.3 14A 520 --
<br /> 7189 -17.18 390 30 90 100
<br /> 10189 -17.18 3,090 50 1,060 1,110 --
<br /> 1,90 -14.92 900 64 510 635 2.4
<br /> W-211 6188 -10.61 290 130 410 397
<br /> 9-10188 -16.1I 0.9 <05 15.7 2.3 --
<br /> 1189 -13.55 <05 <0.5 2.0 <0.5 --
<br /> 4189 -11.83 <0.5 <05 <05 <0.5
<br /> 589 -I3.37 <05 <0.5 <0.5 <0.5 --
<br /> 689 -14.45 <0,5 <0.5 <0.5 0.9 --
<br /> 7189 -16.30 <05 <0.5 <05 2 ._
<br /> - - -
<br /> _.----- T----- ,- --- -989- --=17,234--
<br /> 10/89 -16.80 <0.5 <0.5 <O.5 <0.5 -_
<br /> JIM -15.97 <05 <OS 0.8 <0.5
<br /> I2189 -15.20 <0.5 <0.5 <05 <0.5 --
<br /> 1/90 -14.51 1.205 <03 L1 <0.05
<br /> d
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