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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) (ppb) <br /> NP-2-22 02104-061031'1 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.01<2.0i31 <br /> (Cont.) 03/21/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 04122/03 --- 170163 2.7 <0.50 <0.50 <0.50 11 <br /> 05/20/03 ---- 140 1.4 <0.50 <0.50 <0.50 4.1 <br /> 5127-30103111 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.01<0.50131 <br /> 06120/02 ---- 140 1.4 <0.50 <0.50 0.74 4.2 <br /> 07/22/03 ---- <50 <0.50 <0.50 <0.50 0.59 <2.0 <br /> 08/22/03 ---- 750 7.4 5.2 9.4 6.2 <4.0 <br /> 8126-29/03"' ---- <50 <0.50 <0.50 <0.50 <0.50 <2.01<0.50i31 <br /> 09/18/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> 10/16/03 ---- 30016 40 4.5 1.8 11 <2.0 <br /> 12/02/03 7.7 <50 <0.50 <0.50 <0.50 <1.0 <0.50131 <br /> 02/18/04 1.53 <50 <0.50 <0.50 <0.50 <1.0 1.413 <br /> 04/19/04 -- <50 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> 05/20/04 -- <50 0.63 <0.50 <0.50 <1.0 -- <br /> 08/16/04 - <50 <0.50 <0.50 <0.50 <1.0 <0.50131 <br /> 09/23104 -- <50 <0.50 <0.50 <0.50 <1.0 -- <br /> 10/22/04 -- <50 <0.50 <0.50 <0.50 <1.0 -- <br /> 11118/04 -- <50 <0.50 <0.50 <0.50 <1.0 1.0 <br /> 12/29/04 -- <50 <0,50 <0.50 <0.50 <1.0 -- <br /> 01/28/05 -- <50 <0.50 <0.50 <0.50 <1.0 -- <br /> 02114/05 <50 <0.50 <0.50 <0.50 <1.0 <1.0 <br /> i <br /> NP-2-60 11120-22/00 ---- 13,30012, 4,350 191 498 527 <5001<66.7[31 <br /> 12107100"1 ---- 20,400121 5,580 257 587 678 --- <br /> Baseline 1218100 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 /> 12/26/00 3.67 12,700 3,210 187 334 521 <250 <br /> 01/02/01 ---- 11,900 3,290 259 419 608 <250 <br /> I <br /> 06940-325 9 ENSR Corporation <br />