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Table 4. Historical Groundwater Sample Results Continued, <br /> s ARCO Facility 434, Lodi, California <br /> Monitoring well <br /> number and Concentrations in pg/L <br /> date sampled Benzene Toluene Ethylbenzene Xylenes TPH-G (a) MTBE <br /> 8123/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 11/16/93 <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 <0 3 <0 3 <0 3 <0 5 <10 -- <br /> 9/28/94 <0 5 <0 5 <0 5 <0 5 <50 <br /> 12/19/94 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> Destroyed 3195 <br /> W-7 <br /> 11/13/87 <0 5 <0 5 <0 5 <0 5 <200 -- <br /> 10/3/88 <0 5 <0 5 <0 5 <0 5 -- <br /> 1/4/89 <0 5 <0 5 <0 5 <0 5 -- -- <br /> 4/5/89 <0 5 <0 5 <0 5 <0 5 -- -- <br /> 7/10/89 <0 5 <0 5 <0 5 <0 5 -- <br /> 1016//89 <0 5 <0 5 <0 5 <0 5 -- -- <br /> 1/19/90 12 0 5 06 0 4 150 -- <br /> 5/10/90 <0 3 <0 3 <0 3 <0 3 -- <br /> 10/04/90 1 1 <0 5 3 --1129/91 13 <0 5 <0 5 <0 5 -- <br /> 4/18/91 <br /> -4/18191 <0 5 <0 5 <0 5 <0 5 <50 =_ <br /> 7/25/91 3 5 0 6 <0 5 <0 5 270 <br /> 10/24/91 <0 5 <0 5 <0 5 <0 5 <50 <br /> 2/10/92 <0 5 <0 5 <0 5 <0 5 80 <br /> 5/12/92 <0 5 <0 5 <0 5 <0 5 70 -- <br /> 8/18/92 <0 5 <0 5 <0 5 <0 5 <50 11/16/92 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 2/22/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 5/25/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 8/23/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 111I6/93 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 322/94 0) -- -- -- -- -- <br /> 6/23/940) -- -- -- -- -- <br /> 9/28/94 <0 5 <0 5 <0 5 <0 5 <50 <br /> 12/19/94 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 3/2/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 5/18/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 8/11/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 11/17/95 (4 — -- -- -- -- <br /> 2114/96 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 5/9/96(f) -- -- -- -- -- <br />