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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 ms1) (ft) (ft ms1) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> SWI 05/20/98 -- -- -- -- -- -- -- -- <br /> 08/19/98 -- -- -- -- -- -- -- -- <br /> 11/18/98 -- -- -- -- -- -- -- -- <br /> 03/30/99 -- -- -- -- -- <br /> 05/05/99 -- -- -- -- <br /> SW2 02/17/94 2870 -- 000 660 2,000 770 3,600 29,000 <br /> Not accessible since 02/17/94 <br /> 02/17/95 2757 Air sparging well--samples not collected <br /> 05/11/95 2484 Air sparging well-- samples not collected <br /> 08/24/95 -- Air sparging well samples not collected <br /> 10/19/95 Air sparging well-- samples not collected <br /> 02/13/96 Air sparging well--samples not collected <br /> 04/18/96 -- Air sparging well--samples not collected <br /> 08/08/96 -- Air sparging well--samples not collected <br /> 11/04/96 2372 -- 000 110 <1 2 <1 2 2 0 320 <6 2 <br /> 02/03/97 -- -- -- -- -- -- -- -- -- <br /> 05/08/97 <br /> 08/26/97 -- -- -- -- -- -- -- -- -- <br /> 11/11/97 <br /> 03/03/98 <br /> 05/20/98 -- -- -- <br /> 08/19/98 -- -- -- <br /> 11/18/98 <br /> 03/30/99 <br /> 05/05/99 -- -- — -- — _ _ _ <br /> V1 05/02/91 857 3174 -23 17 000 20,000 49,000 4,700 25,000 130,000 -- <br /> 07/16-17/91 3270 -24 13 000 14,000 44,000 3,000 15,000 170,000 -- <br /> 10/15/91 3325 -2468 000 18,000 51,000 4,200 23,000 200,000 -- <br /> 01/28/92 3151 -2294 Sheen 20,000 58,000 2,400 23,000 150,000 -- <br /> 04/30/92 31 12 -2255 000 15,000 43,000 3,000 18,000 130,000 -- <br /> 73992 Q599 rl XC5 Page 25 <br />