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Tab Pel 113 of 31 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Halt Dr.,Stockton,California <br /> Well Depth Product Groundwater Groundwater Total <br /> Date Elevation to Water thickness, Elevation Elevation change TPH-G Benzene Toluene Ethylbenzene Xylenes MtBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mg/l <br /> 211190 17.10 -- -14.81 0.24 - -- -- <br /> E-3 2/15/90 17.08 -14.79 0.02 - - <br /> (cont.) 2122190 17.90 -15.61 -0.82 -- -- -- _ <br /> 318/90 16.82 -- -14.53 1.08 - 9,860 2,380 1,780 8,270 <br /> 4/5/90 17.26 -- -14.97 -0.44 -- -- -- -- _ <br /> 4119190 17.15 -14.86 0.11 <br /> 5/10190 17.47 -15.18 -0.32 <br /> 5124/90 17.42 - -15.13 0.05 -- - <br /> 6/5190 17.38 -15.09 0.04 -- -- - <br /> 6/18190 Dry -- -- -- -- -- -- -- <br /> 7/12/90 18.19 -15.90 <br /> 8/16/90 Dry -- -- -- - - - -- <br /> 9/17/90 18.32 -16.03 -- - -- - <br /> 9/19/90 18.32 -- -16.03 0.00 -- - -- _ <br /> 10/11/90 Dry -- -- -- -- - <br /> 1216190 Dry -- -- - -- -- <br /> 2111/91 18.30 -16.01 -- <br /> 2125191 18.26 -15.97 0.04 - - <br /> 4123191 17.79 -15.50 0.47 <br /> 7115/91 Dry - -- -- <br /> 1018/91 Dry - -- <br /> 1/22/91 Dry -- - -- -- -- -- <br /> 4/22/92 Dry - -- - -- <br /> 7/29/92 Dry - - - - <br /> 10/29/92 Dry -- -- -- -- -- -- <br /> 1127193 16.69 -14.40 -- 57,000 2,700 180 660 1,900 -- <br /> 4/29/93 14.93 -12.64 1.76 32,000 3,400 140 930 2,500 <br /> 8/5/93 16.70 -14.41 -1.77 27,000 1,800 69 670 1,400 -- <br /> 11/10/93 17.14 -- -14.85 -0.44 47,000 1,700 <50 740 2,000 <br /> 3/21194 16.60 -14.31 0.54 24,000 1,500 86 620 1,500 -- <br /> 6/27/94 16.25 -- -13.96 0.35 19,000 1,500 36 670 1,400 <br /> 9/29/94 17.04 -- -14.75 -0.79 24,000 1,600 77 630 1,300 <br /> 12/8/94 16.68 -- -14.39 0.36 21,000 2,700 58 890 1,900 -- -- <br /> 3/8/95 14.20 -11.91 2.48 94,000 1,600 130 640 2,600 -- <br /> 611/95 12.68 -10.39 1.52 58,000 1,900 24 590 2,500 <br /> 9111/95 15.01 -12.72 -2.33 29,000 1,900 <50 640 1,900 -- <br /> 1215/95 15,22 -12.93 -0.21 -- -- -- .- -- <br /> 3/18/96 10.40 - -8.11 4.82 15,000 480 12 390 660 <br />