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Tabes 1 Pof 31 <br /> 9 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt 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/I <br /> E-5 2114/91 18.62 -16.17 0.33 18,000 6,300 120 560 4,300 <br /> (cont.) 2/25/91 18.59 - -16.14 0.03 -- -- -- -- <br /> 4/23/91 17.87 -15.42 0.72 10,000 8,400 <0.50 270 680 <br /> 7/15/91 Dry - -- -- -- -- -- <br /> 10/8/91 Ory -- -- -- <br /> 1/22/92 19.23 -- -16.78 -- <br /> 4/22/92 18.31 -15.86 0.92 28,000 4,300 130 560 1,700 <br /> 7/29/92 19.60 -17.15 -1.29 -- -- -- -- -- <br /> 10/29/92 Dry .. .. -- -- - -- <br /> 1127/93 16.90 -14.45 -- 26,000 4,000 110 470 800 <br /> 4129/93 15.08 -12.63 1.82 41,000 6,300 110 920 2,200 <br /> 815/93 16.80 -14.35 -1.72 26,000 4,700 <50 560 560 - <br /> 11/10/93 17.19 -14.74 -0.39 19,000 2,500 <50 380 690 <br /> 3121/94 16.60 -14.15 0.59 13,000 1,700 40 300 650 <br /> 6/27/94 16.27 -13.82 0.33 9,400 1,800 17 260 520 <br /> 9/29/94 17.23 -14.78 -0.96 7,900 1,200 <20 200 330 <br /> 12/8/94 16.83 -14.38 0.40 6,800 1,300 30 220 410 <br /> 3/8/95 14.34 -11.89 2.49 39,000 3,000 <50 460 1,400 <br /> 6/1/95 12.75 -10.30 1.59 2,300 6.9 <2.5 11 53 <br /> 9/11195 14.75 - -12.30 -2.00 1,200 <3 4 6 14 <br /> 12/5/95 15.41 -12.96 -0.66 -- -- -- -- <br /> 3/18/96 9.60 - -7.15 5.81 150 0.59 <0.5 <0.5 0.65 <br /> 6/18/96 11.20 -8.75 -1.60 -- -- -- -- -- <br /> 9/25/96 13.12 -10.67 -1.92 <50 <0.5 <0.5 <0.5 <0.5 <5 <br /> 1214/96 12.65 - -10.20 0.47 -- -- -- -- -- -_ -- <br /> 3119/97 NP 8.44 -5.99 4.21 <50 <0.5 <0.5 <0.5 <0.5 -- 7.8 <br /> 6/5/97 P 10.20 -7.75 -1.76 -- -- -- -- -- -- 9.7 <br /> 8/19/97 NP 11.72 -- -9.27 -1.52 <50 <0.5 <0.5 <0.5 <0.5 <5 7.3 <br /> 11/25/97 P 11.93 -9.48 -0.21 -- -- -- _- -- __ -- <br /> 3/20/98 NP 5.61 -- -3.16 6.32 1,200 5.7 2.6 1.4 1.3 <5 14.0 <br /> 6/24/98 7.66 -5.21 -2.05 -- -- -- -- -- -- -- <br /> 9/10/98 NP 9.40 -6.95 -1.74 <50 <0.5 <0.5 <0.5 <0.5 <5 <br /> 12/17/98 9.45 -7.00 -0.05 -- -- -- -- __ -- -- <br /> 3/10/99 NP 7.27 -4.82 2.18 <50 <0.5 <0.5 <0.5 <0.5 <5 4.1 <br /> 6122199 -- 9.22 - -6.77 -1.95 -- -- -- -- -- -- 3.1 <br /> 9113/99 NP 10.93 -8.48 -1.71 <50 <0.5 <0.5 <0.5 <0.5 <5 5.6 <br /> 12/15/99 -- 10.82 -8.37 0.11 -- -- -- -- -- -- 9.5 <br /> 3123/00 NP 6.12 -3.67 4.70 <50 <0.5 <0.5 <0.5 <0.5 <2.50 4.7 <br />