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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 insl) ((ft) Benzene Toluene benzene Xylenes TPH- <br /> MW9 09/25/90 788 Dry NS NS NS NS NS <br /> 12/19/90 2933 -2145 000 NS NS NS NS NS <br /> 01/30/91 Dry N5 NS NS NS NS <br /> 05/02/91 2945 -2157 000 NS N5 NS NS NS <br /> 07/16-17/91 2960 -2172 a 000 NS NS NS NS NS <br /> 10/15/91 Dry NS NS NS NS NS <br /> 01/28/92 Dry NS NS NS NS NS <br /> 04/30/92 29 07 -21 19 000 NS NS NS NS NS <br /> 08/13/92 2947 -2159 000 NS NS NS NS NS <br /> 10/08/92 Dry NS NS NS NS NS <br /> 02/23/93 2836 -2048 000 NS NS NS NS NS <br /> 05/18/93 -- -- -- NS NS NS NS NS <br /> 08/22/93 Not accessible NS NS NS NS NS <br /> 12/30/93 Not accessible NS NS NS NS NS <br /> 02/17/94 Not accessible NS NS NS NS NS <br /> 05/10/94 2615 -1827 000 3,100 29 52 89 7,400 <br /> 08/02/94 2765 -19.77 000 4,900 230 120 490 13,000 <br /> MW l0 04/11/88 861 23 18 -14 57 000 640 130 170 140 3,100 <br /> 09/13/88 2585 -1724 000 4,800 130 340 240 7,700 <br /> 11/16/88 2608 -1747 000 5,800 290 700 340 9,400 <br /> 02/09/89 2570 -17 09 000 7,500 450 220 320 8,800 <br /> 05/31/89 27 44 -1883 000 11,000 320 1,600 800 24,000 <br /> 08/17/89 29 45 -20 84 000 12,000 2,100 3,100 2,500 35,000 <br /> 03/21/90 Not accessible NS NS NS NS NS <br /> 05/17/90 Not accessible NS NS NS NS NS <br /> 06/27/90 3252 -2391 000 9,700 4,800 2,400 5,300 51,000 <br /> 09/25/90 3395 -2534 000 13,000 9,900 2,700 8,900 71,000 <br /> 12/19/90 3379 -25 18 000 16,000 16,000 3,300 11,000 81,000 <br /> 01/30/91 3424 -2563 000 18,000 15,000 2,600 9,900 62,000 <br /> 05/02/91 3424 -25 63 000 6,900 5,700 2,100 5,900 27,000 <br /> 07116-17191 35 13 -26 52 a 000 NS NS NS NS NS <br /> XCL73942Q894TI i Page 6 <br />