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Table 4. Historical Groundwater Sample Results Continued, <br /> ARCO Facility 434, Lodi, California <br /> Monitoring well <br /> number and Concentrations in ug/L <br /> date sampled Benzene Toluene Ethylbenzene Xylenes TPH-G(a) MTBE <br /> 3122/94 <0 3 <0 3 <0 3 <0 5 <10 -- <br /> 6/23/94 <0 3 <0 3 <0 3 <0 5 <10 <br /> 9/28194 <0 5 <0 5 <0 5 <0 5 <50 12/t9/94 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 3/2/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 5/19/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 8/10/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 11/17/95 <0 5 <0 5 <0 5 <0 5 <50 <3 <br /> 2/14/96 <0 5 055 <0 5 5 0 <50 -- <br /> 5/9/96 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> W-10 <br /> 519190 25 04 04 2 -- <br /> 10/04/90 16 2 3 10 -- -- <br /> 2/2/91 26 2 5 0 6 3 6 -- <br /> 4/17/91 64 <0 5 <0 5 097 <50 -- <br /> 7/24/91 56 <0 5 <0 5 2 3 2900 -- <br /> 10/23/91 54 <0 5 <0 5 2 3 1100 -- <br /> 2/11/92 15 <1 <1 <1 360 -- <br /> 5/12/92 20 0 7 <0 5 17 400 <br /> 8118192 26 <0 5 <0 5 <0 5 230 <br /> 11/17/92 35 <0 5 <0 5 <0 5 <50 -- <br /> 2/22/93 0) -- -- -- -- -- -- <br /> 5126/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 8/24/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 11/17/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 3/22/94 <0 3 <0 3 <0 3 <0 5 <10 -- <br /> 6/23/94 U) -- -- -- -- -- -- <br /> 9/28/94 0) -- -- -- -- -- -- <br /> 12/19/94 0) — -- -- -- -- -- <br /> 3/2/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 5/19/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 8/11/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 1 1/17195 (f) -- -- -- -- <br /> 2/14/96 <0 5 050 <0 5 4 7 <50 -- <br /> 5/9/96(f) -- -- -- -- -- -- <br /> W-11 <br /> 5/3/90 3 4 1 1 3 4 1 9 -- <br /> 10/04/90 2 2 1 4 -- <br /> 2/2/91 18 1 3 2 29 -- <br /> 4/18/91 44 <0 5 <0 5 19 470 -- <br /> 7/24/91 12 <0 5 <0 5 <0 5 450 -- <br /> 10/23/91 69 <0 5 <0 5 <0 5 380 -- <br /> 2/11/92 <0 5 <0 5 <0 5 <0 5 340 H <br /> 5/12/92 <0 5 <0 5 <0 5 <0 5 80 <br />