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Table 1 -C-Sparge System Pilot Test Groundwater Chemical Analytical Data <br /> Former Unocal Service Station#0187 <br /> 437 East Miner Avenue <br /> Stockton,California <br /> Sample DO TPHg Benzene Toluene Ethylbenzene Xylenes MWE <br /> Well ID Date (ppm) b) b) b) b) b) (ppb) <br /> NP-1-22(can't) 07/17/01 2.48 5,700 240 <50 320 850 <250 <br /> 07/31/01 ---- 8,800 190 34 280 850 <25 <br /> 08/13-15/0111 ---- 9,1001�1 200 45 300 920 <100/<t0131 <br /> 11/26-28/0111 ---- 7,5001�1 190 63 220 740 <250/2.0131 <br /> 02/25-27/0211 ---- 12,000141 260 63 410 1,200 <200/2.1E31 <br /> 05/07-09/02"' ---- 9,000121 260 67 350 960 <250/<2.0131 <br /> 05/21/02 ---- 7,600 250 73 420 1,200 110 <br /> 06/19/02 ---- 660 23 8.1 6.3 130 <25 <br /> 07/19/02 ---- 370161 8.3 4.1 3.4 44 12 <br /> 8/12/-14/02r" ---- 110 2.1 1.3 0.97 15 3.4/<1,0131 <br /> 08/22/02 ---- 72163 1.6 <0.50 0.58 49 <2.5 <br /> 09/20/02 ---- 73 1.3 <0.50 1.1 9.9 <2.5 <br /> 10/21/02 ---- 55 0.98 0.51 1.1 13 <2.5 <br /> 11/5-6/0211 ---- 120 2.0 <0.50 1.8 5.8 <2.5/<2.0133 <br /> 11/21/02 ---- 750 11 <2.0 26 59 <10 <br /> 12/18/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 01/23/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 02/04-061031'1 - <50 <0.50 <0.50 <0.50 <0.50 <2.0/<2.0131 <br /> 03/21/03 ---- <50 <0.50 <0.50 <0.50 1.8 <2.0 <br /> 04/22/03 ---- <50 <0.50 <0.50 <0.50 1.1 <2.0 <br /> 05/20/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 5/27-30/03E1 ---- <50 <0.50 <0.50 <0.50 1.2 <2.0/<0.50131 <br /> 06/20/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 <br /> 07/22/03 ---- 60 1.1 <0.50 0.76 8.5 <2.0 <br /> 08/22/03 ---- 160 2.3 2.4 2.5 4.9 <2.0 <br /> 8/26-29/0311 ---- <50 <0.50 0.50 <0.50 <0.50 <2.0/<0.50131 <br /> 09/18/03 ---- 390161 2.6 0.51 7.8 8.5 <0.50 <br /> 240042.11-3 3 <br />