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Table 4. Historical Groundwater Sample Results Continued, <br /> ARCO Facility 434, Lodi, California <br /> Monitoring well <br /> number and Concentrations inµg/L <br /> date sampled Benzene Toluene Ethylbenzene Xylenes TPH-G (a) MTBE <br /> 3/22194 <0 3 <0 3 <0 3 <0 5 <10 <br /> { 6123194 <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 /> 3/2/95 <0 5 <0 5 <0 5 <0 5 <50 <br /> 5/19195 <0 5 <0 5 <0 5 <0 5 <S0 <br /> 8/10/95 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 11/17/95 <br /> _11/17195 <0 5 <0 5 <0 5 <0 5 <50 <3 <br /> 2/14/96 <0 5 055 <0 5 50 <50 <br /> 5/9/96 <0 5 <0 5 <0 5 <0 5 <50 _. <br /> W-10 <br /> 5/9/90 25 04 04 2 <br /> 10/04/90 16 2 3 10 <br /> 2/2/91 26 25 06 36 <br /> 4/17191 64 <0 5 <0 5 097 <50 <br /> 7/24/91 56 <0 5 <0 5 23 2900 -- <br /> 10/23/91 54 <0 5 <0 5 23 1100 <br /> 2/11/92 15 <1 <1 <1 360 -_ <br /> 5112192 20 07 <0 5 1 7 400 -- <br /> 8/18/92 26 <0 5 <0 5 <0 5 230 <br /> 11/17/92 35 <0 5 <0 5 <0 5 <50 <br /> 2122/930) -- __ _- -- <br /> 5/26/93 <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 /> 3122/94 <O3 <0 3 <0 3 <05 <10 `= <br /> 6/23/940) T . <br /> -- <br /> 9/28/940) <br /> 12/19/940) — -- -- -- -- <br /> 3/2/95 <0 5 <0 5 <0 5 <0 5 <50 <br /> 5/19195 <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 (1) -- -- <br /> 2/14/96 <br /> -2/14196 <0 5 050 <0 5 47 <50 <br /> 519/96(f) -- -- <br /> W-1 I <br /> _W-11 -- <br /> 5/3/90 3 4 1 1 3 4 19 <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 <br /> 5112/92 <0 5 <0 5 <0 5 <0 5 80 __ <br />