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<br /> Table 9
<br /> C-Sparge System Pilot Test
<br /> Groundwater Chemical Analytical Data
<br /> Former Unocal Service Station#0187
<br /> 437 East Miner Avenue, Stockton
<br /> Sample DO TPHg Benzene Toluene Ethylbenzene Xylenes MtBE
<br /> Well ID Date (ppm) (ppb) (ppb) (ppb) (ppb) (ppb) (p b)
<br /> NP-2-60 11120-22100f1 - 13,30012] 4,350 191 498 527 <500/<66.7E31
<br /> 12/07/0011 ---- 20,400E�1 5,580 257 587 678 -
<br /> j Baseline 12/8100 1.94 12,000 4,300 190 490 600 1200
<br /> 12/19/00 5.06 9.400 3,500 210 300 420 <100
<br /> NP-2-60 12/26/00 3.67 12,700 3,210 187 334 521 <250
<br /> (Cont.) 01/02/01 -- 11,900 3,290 259 419 608 <250
<br /> 01109101 3.29 9,340 3,160 140 178 234 <250
<br /> 01/16/01 5.28 6,670 2,850 125 134 242 <500
<br /> 01/23/01 3.78 7,050 2,770 167 155 328 <500
<br /> 01/30/01 3.26 9,080 2,370 143 184 299 425
<br /> 02/06/01 2.30 8,970 2,090 132 173 279 <250
<br /> 02/13/01 4.37 10,500 3,430 182 232 386 506
<br /> 02/21/01 3.17 8,370 3,370 <50.0 203 328 <250
<br /> 2/26-2710111 ---- 9,780 4,120 286 244 393 <50.01<2.001
<br /> 03/06/01 3.76 7,210 3,620 263 238 357 <250
<br /> 03/13/01 3.36 6,830 3,040 217 170 277 4050
<br /> 03/27/01 5.17 7,810 3,280 241 207 348 659
<br /> 04/10/01 2.81 7,570 3,150 <50.0 174 312 592
<br /> 04/24/01 5.15 7,070 2,270 164 157 267 459
<br /> 05/08101 3.05 8,090 2,460 189 170 315 522
<br /> 05114-1610111 ---- 8,100E21 3,270 200 190 297 <250/<66.7E3i
<br /> 05/22/01 2.51 9,120 3,320 253 175 327 <250
<br /> 06/05/01 - 4,300 2,200 160 130 190 <50
<br /> 06/19/01 3.99 <5,000 2,300 190 130 210 <250
<br /> 07/03/01 3.37 <5,000 3,700 260 150 250 <250
<br /> 07/17/01 4.24 6,700 3,300 220 120 220 580
<br /> 07/31/01 - 309 150 9.4 7.2 12 <2.5
<br /> 08113-15101E+1 --- 10,000E21 3,800 220 130 280 <5001<33E31
<br /> 11/26-28101111 --- 7,700121 3,100 96 <50 160 <500/<33131
<br /> 02125-2710211 --- 3,9001�1 1,100 29 <10 79 <1001<10131
<br /> 05107-09102Ei1 --- 20,000Ez1 7,600 310 370 270 <1,0001<33E31
<br /> 06940.325 9 ENSR Corporation
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