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TABLE 1 (continued) <br /> Casing Depth Groundwater LPH Concentration(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft msl) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW9 05/08/97 657 1725 -1068 000 310 <5 0 39 57 2,600 250 <br /> 08/26/97 1905 -1248 000 64 <2 0 <2 0 <2 0 1,100 150 <br /> 11/11/97 1947 -1290 000 31 <1 2 <1 2 <1 2 750 c 170 <br /> 11/11/97 180* <br /> 03/03/98 13 81 -724 000 22 <0 5 1 5 2 0 540 60 <br /> 03/03/98 68* <br /> 05/20/98 13 86 -729 000 3 5 <0 5 <0 5 <0 5 220e 22 <br /> 05/20/98 20* <br /> 08/19/98 15 50 -8 93 000 081 6 8 <0 5 <0 5 340 45 <br /> 08/19/98 44* <br /> 11/18/98 1573 -916 000 <05 <05 <05 <05 310c 18 <br /> 03/30/99 13 85 -7 28 000 -- -- -- -- -- -- <br /> 05/05/99 1423 -766 000 <0 5 <0 5 <0 5 <0 5 93 1 5 12 <br /> 08/20/99 15.69 -9 12 000 -- -- -- -- -- -- <br /> MW10 04/11/88 8 61 23 18 -14 57 000 640 130 170 140 3,100 -- <br /> 09/13/88 25 85 -1724 000 4,800 130 340 240 7,700 -- <br /> 11/16/88 2608 -1747 000 5,800 290 700 340 9,400 -- <br /> 02/09189 2570 -1709 000 7,500 450 220 320 8,800 -- <br /> 05/31/89 2744 -1883 000 11,000 320 1,600 800 24,000 -- <br /> 08/17/89 2945 -2084 000 12,000 2,100 3,100 2,500 35,000 -- <br /> 03/21/90 Not accessible -- -- -- -- -- <br /> 05/17/90 Not accessible -- -- -- -- -- <br /> 06/27/90 32 52 -2391 000 9,700 4,800 2,400 5,300 51,000 -- <br /> 09/25/90 33 95 -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 -25 63 000 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 /> 07/16-17191 35 13 -26 52 a 000 -- -- -- -- -- <br /> 10/15/91 Dry - -- -- -- -- -- <br /> 01/28/92 33 86 -25 25 000 <br /> 04/30/92 33 52 -2491 000 -- -- -- -- -- -- <br /> 73942 Q899 r1 XiS Page 13 <br />