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TABLE 15-3 <br />Historical Information for Ground Water Wells <br />Seneca II-W Mine <br />Well Number Year <br />Completed Year <br />Discontinued Water Levels <br />to 1989 Comments, Problems, Etc. <br />GW-S2W-1 W 1979 1986 46 Completed in same bore hole. Seal failed in 1980. <br />GW-S2W-10V Water quality samples are suspect (?1~ Sampling of <br /> 1 W ended 02/82. <br />GW-S2W-2WC Completed in same bore hole. Seals failed by <br />GW-S2W-2W 1979 1986 38 1985. Some water quality samples are suspect <br />GW-S2W-20V (?I. <br />GW-S2W-3EW Water level observation wells only completed in <br />GW-S2W-3E1 1979 1983 36 same bore hole. Seal failed in 1983. <br />GW-S2W- <br />3EWC <br />GW-S2W-3WC 1979 - 52 Single monitoring well. <br />GW-S2W-3W 1979 - 58 from Completed in same bore hole. <br />GW-S2W-30V 3W 30V is a dry well. 3W dry from 1980-83. <br />GW-S2W-4W 1979 1986 43 Completed in same bore hole. <br />GW-S2W- 40V1 is dry well some times. <br />40V1 4W produced water quality samples and level data. <br />GW-S2W-4WC 1979 1986 69 Water level observation wells only completed in <br />GW-S2W- same bore hole. Poor completion record and <br />40V2 hydraulic link with lower aquifers =suspect data. <br /> Completed in same bore hole. Seal failed in 1980. <br />1979 1986 46 <br />GW-S2W-5W <br />GW-S2W-50V <br />GW-S2W-6A1 1980 45 Single wells along transect in alluvium. <br />GW-S2W-6A2 <br />17 <br />Revised 9/98 <br />