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r ai"Elr A ' <br /> i lig <br /> s i Fr <br /> - r <br /> 'fable 1. Analytical Resuits--Groundrwater Samples, <br /> April 1987 through January 1991, ARCO <br /> Station 434, Lodi, California (continued) <br /> Concentrations,micrograms per liter <br /> Water <br /> Monitoring surface <br /> well number Date elevation' Benzene Edlylbcnzenc Toluene Xylenes TPH C4-C12 <br /> W-9 (TOC 4/90 -15.41 2,000 12 320 3,200 6,600 <br /> ek-wation 59.81) 10!'90 -21.55 770 <O.S 120 610 2 7(}0 <br /> 1/91 -18.08 1 180 0.8 19 50 400 <br /> W-10(TOC 5190 -16.13 2.5 0.4 0.4 2.0 500 <br /> elevation 58.74) 10190 -21,39 16 3 2 10 630 <br /> 1/91 -17.89 26 0.6 2.5 3.6 -- 440 <br /> W-11 (TQC 5/90 -16.05 3.4 3.4 1.1 1.9 420 <br /> elevation 58.83) 10/90 -21.40 2 1 2 4 60 <br /> 1/91 -17,92 18 3.2 1.0 2.9 - 170 <br /> W-12(TOC 4/90 -16.04 <0.3 <0.? 2.3 0.9 130 <br /> elevation 58.49) 10190 -21.83 <0.5 <0.5 <0.5 <0.5 <50 <br /> 1/91 -18.55 <0.5 <0.5 <0.5 <0.5 _. <50 <br /> 'Absolute elevations based on City Bench Mark 786(elevation 43.11 feet above sea level)on northwest corner of <br /> Ketticrnan Lane and Hutchins Street intersection. <br /> "NS=not sampled. <br /> `Dashes indicate sample not analyzed. <br /> 'Spurious data" <br /> 'Well destroyed <br /> Note: Bold samples analyzed this quarter. <br />