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Mr, Steve Renner • • Page 2 November 21, 1985 1982. The well went dry before there was any discharge from the pump column due to the fact that the well only had 17 gallons of casing storage and a particularly low yield as indicated by a recovery rate of 0.08 to 0.16 feet per day (0.05 to 0.10 gallons per day). On July 14, 1982, the well was bailed dry; the last bail was checked for w~ter quality field parameters. The field pH was 12 units, specific conductivity at I I.0° was 6200 micromohs and the water had floc-like suspended matter in it. It was decided at this time that a water sample would not be sent to the lab because the well had apparently been contaminated by drilling fluids or cement and as such, would provide useless infor- mation. During the mid-term review process in the spring of 1984, MLRD requested sampling of this well. On June t3, 1984, approximately six (6) gallons were bailed for a water quality sample after another attempt at pumping failed for the same reasons described for the first pumping attempt. On November 2, 1984, the well was bailed again (14 gallons) and sampled for water quality. The analytical results of these two samples (Appendix B, 1984 Annual Hydrology Report) indicate that the well is still contaminated as reflected by She anomalously high pH and conductivity values compared to the values obtained from the other three (3) Wadge coal wells sampled biannually for water quality. In summary, well development by means of pump-surge-pump and hand bailing has been attempted. How- ever, the extremely low casing storage volume and low rate of recovery (i.e., low yield) of this well has precluded proper well development. As such, a representative water sample of Wadge coal formation water is impossible to obtain at this site. 3. Water quality sampling of well GW-S6 will be discontinued and replaced with well GW-S I I. Both wells monitor the Wolf Creek Overburden. Proper technique for sampling well GW-56 is almost impossible and collection of a representative water sample is improbable because a PVC bailer, 260 feet of nylon rope and a metal pipe attached to 260 feet of electrical wire have been lost down the hole. 4. The annual hydrology report will be submitted to the CMLR at the end of February instead of the end of January following each calendar year. 5. In addition to these proposed changes, a spring and seep survey of reclaimed lands will be performed annually. The mine hydrologist will locate and map all springs and seeos which issue from previously disturbed lands within the permit boundary. The survey will be made during periods of baseflow (September-October) before the ground freezes or the onset of snow. Discharge from located springs and seeps will be measured if field conditions permit. If discharge is greater than three (3) gallons per minute, field param- eters (pH, specific conductance, and temperature) will also be determined at this time. The above described changes to The Seneca II Mine hydrology monitoring program are incorporated into the attached revised pages 7-10.16, 17, 19, 22 and 26 of the Seneca II Mine Permit.