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2. Drawdowns of approximately 60 feet may have occurred in the Twentymile sandstone at the location of well 91M005. No discernable changes in water level are noted at this time in well 0o6-BRDH7. No significant water quality changes are apparent from data collected at these wells. 3. .The Trout Creek sandstone wells reveal water level changes due to pumping by the mine or mining itself. Page 2.05-111 of the approved permit require that Trout Creek wells in the vicinity of the mine be monitored if the sandstone shows impacts due to mining. The Division reminded TCC of this commitment in a letter dated 11/25/94 after review of the 1993 AHR. Please submit data collected to-date for the wells in the vicinity. 4. Data appears to indicate a 20 foot decline in Fish Creek sandstone well 91-M004 since the fall of 1993. Does this decline correspond to undermining during 1994? Alluvial Wells 1. The conductivity in well 0o1-S-5 has exceeded 2000 umhos/cm for the first time (twice) since monitoring began. Also, the lowest water level in the last 5 years was recorded in 1994. 2. Well 008-AV-2 shows a generally increasing trend to its current value of 1300 mg/1 total dissolved solids. 3. Water levels in 1994 in well 006-AY-1 on Fish Creek show a rise of approximately 4 feet. This may be due to damming of water near this station (field inspection, July 1995). 4. The two highest ever EC values above 3500 umhos/cm were recorded in well 006-AW-2. 5. Some of the highest ever EC values since 1986 were recorded in well 008-AU-3 and the lowest water level ever was recorded. 6. 008-AW-3 indicates EC values were measured above 3500 umhos/cm, the highest since 1990. Surface Water 1. The mean quarterly conductivity on Foidel Creek at site 800 continues to increase, now at approximately 3400 umhos/cm. 2. Excluding the 1993 high EC on Fish Creek at site 27A due 1st panel south dewatering, the two highest mean quarterly values ever were calculated in 1994.