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� � � � 1• � � � � � � � l� � � � Ili � � <br /> Table 9 <br /> C-Sparge System Pilot Test <br /> Groundwater Chemical Analytical Data <br /> Former Unocal Service Station 90187 <br /> 437 East Miner Avenue, Stockton <br /> Sample DO TPHg Benzene Toluene Ethylbenzene Xylenes MTBE <br /> Well ID Date (ppm) (ppb) ( b) (ppb) (ppb) (ppb) WN <br /> U-3 06119/02 --- <50 <0.50 <0.50 <0.50 <0.50 <2.5 <br /> (Cont.) 07/19/02 ---- 590"1 6.0 1.8 6.3 5.2 <2.5 <br /> 08112-14/021'1 --- <50 <0.50 <0.50 <0.50 <0.50 <2.51<1.0131 <br /> 08/22/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 <br /> 09/20/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 <br /> 10/21/02 --- <50 <0.50 <0.50 <0.50 <0.50 <2.5 <br /> 11105-06/021'1 --- 220 2.1 <0.50 2.4 1.9 <2.51<2.0131 <br /> 11/21/02 --- 170 <0.50 <0.50 2.0 <0.50 <2.5 <br /> 12/18/02 -- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 01/23/03 ---- 150 3.3 <0.50 0.5 2.1 <2.0 <br /> 02104-06103111 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0/<2.0131 <br /> 03/21/03 --- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 04/22/03 --- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 05/20/03 --- 190 39 3.1 2.0 30 <2.0 <br /> 05127-30103111 ---- 150 1.2 <0.50 <0.50 0.74 <2.0/<0.50131 <br /> 06/20/03 ---- <50 1.5 <0.50 <0.50 <0.50 <2.0 <br /> 07/22/03 - 230 1.8 0.59 1.7 2.3 <2.0 <br /> 08/22/03 ---- 550 5.4 3.3 5.3 3.0 <2.0 <br /> 8/26-29103111 ---- 350 4.3 2.0 2.4 2.6 <2.0/<0.50131 <br /> 09/18/03 ---- 530161 2.0 1.0 2.7 0.59 <0.50 <br /> 10/16/03 --- 760j61 3.2 1.9 6.8 2.0 <2.0 <br /> 11/28/03 7.4 760 9.5 3.9 11.0 7.5 <0.50131 <br /> 02/17/04 0.85 19,000 3,400 360 710 3,100 <0.50131 <br /> 04/19/04 2,500 340 30 120 210 <1.04 <br /> 05/20/04 2,000 130 25 51 74 -- <br /> 08/16/04 5,600 1200 62 210 840 <0.50131 <br /> 09/23/04 X50 <0.50 <0.50 0.55 2.3 -- <br /> 10/22/04 4,100 1400 34 80 600 -- <br /> 11l19104 2,600 620 30 100 430 <0.50 <br /> 12/29/04 1,400 410 <10 26 240 - <br /> 06940-325 13 ENSR Corporation <br />