STUDY NUMBER ; 1.2 



ORGANIZATION ; Montana Bureau of Mines and Geology (MBMG) 



TITLE OF STUDY ; Intensive Butte Area Groundwater Monitoring 



CONTACT ; Ted Duaime - MBMG - 496-4157 



OBJECTIVE: Assess the impacts to groundwater (quality and 

 quantity) caused by shutdown of raining activities in Butte. 



DURATION ; 1984 - ? 



CURRENT STATUS ; Pumping of the underground mine workings on 

 the Butte Hill ceased in April, 1982. Water in now flooding 

 these areas and the Berkeley Pit at a rate of 3,000 to 10,000 

 gallons per minute. 



Comprehensive water quality saunpling for common ions 

 and heavy metals was routinely conducted within the abandon- 

 ed mine shafts, the Berkeley Pit (including vertical pro- 

 files) and from several shallow groundwater stations during 

 the first year of the study. The most recent comprehensive 

 water quality sampling of the mine shafts was conducted in 

 October, 1985. However, monthly specific conductivity, 

 temperature and static water levels have been monitored for 

 the last two years. All monitoring efforts have been 

 closely coordinated with the Anaconda Minerals Company, the 

 US Geological Survey and Montana Department of State Lands. 

 Data summaries can be obtained from the MBMG in Butte. No 

 interira or final reports have as yet been published. 



