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TABLE 1 (continued) <br /> Casing Depth Groundwater LPH Concentration(pg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g <br /> RW2 01/30/91 813 3108 -2295 000 580 2,300 580 3,600 13,000 <br /> 05/02/91 3097 -2284 000 1,600 3,400 1,600 7,900 32,000 <br /> 07/16-17/91 31,95 -2382 000 600 1,900 730 3,900 21,000 <br /> 10/15/91 3253 -2440 000 510 2,700 720 3,300 22,000 <br /> 01/28/92 3076 -2263 000 260 1,200 590 2,500 17,000 <br /> 04/30/92 Not accessible Ns Ns Ns Ns NS <br /> 08/13/92 3247 -2434 000 130 630 280 1,100 8,500 <br /> 10/08/92 3303 -2490 000 130 630 250 1,400 11,000 <br /> 02/23/93 2971 -2158 000 130 580 1,000 2,000 9,700 <br /> 05/18/93 2830 -2017 000 420 1,400 750 2,400 16,000 <br /> 08/22/93 2857 -2044 000 330 I,100 620 1,900 15,000 <br /> 12/30/93 27 88 -1975 000 620 870 690 2,600 26,000 <br /> 02/17/94 2749 -1936 000 170 140 150 540 5,600 <br /> 05/10/94 27 17 -1904 000 230 750 410 1,100 10,000 <br /> 08/02/94 2865 -2052 000 NS Ns NS NS NS <br /> 11/01/94 28.99 -20.86 0.00 NS NS NS NS NS <br /> RW3 05/22/90 889 3095 -2206 000 16,000 41,000 5,500 31,000 160,000 <br /> 12/19/90 33 02 -2368 061 Not sampled-LPH <br /> 01/30/91 3373 -24 12 098 Not sampled-LPH <br /> 05/02/91 3275 -2347 054 Not sampled-LPH <br /> 07/16-17/91 3372 -2449 047 Not sampled-LPH <br /> 10/15/91 35 27 -25 58 1 10 Not sampled-LPH <br /> 01/28/92 3269 -2370 014 Not sampled-LPH <br /> 04/30/92 3227 -2334 006 Not sampled-LPH <br /> 08/13/92 3467 -2550 039 Not sampled-LPH <br /> 10/08/92 35 36 -2606 0 56 Not sampled-LPH <br /> XLS73942Q1194T11 Page 13 <br />