USBM conducts AML inventory for BLM in Colorado's Animas river watershed.
Abstract Book, U.S. Department of the Interior Conference on the Environment and Safety, April 24-28, 1995. Washington, DC: U.S. Bureau of Mines, 1995 Apr; :24
The U.S. Bureau of Mines in cooperation with the BLM Colorado State Office has completed an AML inventory of BLM managed land in the Upper Animas River Watershed, Colorado. This watershed has experienced significant heavy metals loading from historic mining activities and from natural mineralization. During the summer of 1994, field examinations of 304 abandoned mine sites were conducted by interagency teams. On-site investigations entailed recordation of major features, determination of precise geographic locations using Geographic Positioning System (GPS) units, and water quality measurements (pH and conductivity). A total of 89 water samples were collected and later analyzed. The resultant report, titled "Abandoned Mine Land Inventory of BLM Administered Land in Upper Animas River Watershed, Colorado" by Barbara J. Hite was delivered to the BLM Colorado State Office in February 1995. The report contains an evaluation of physical hazards at the sites, analytical results of water testing, and a prioritization of the most problematic sites.
Heavy-metals; Mining-industry; Water-sampling; Water-analysis; Occupational-hazards; Analytical-methods
Conference/Symposia Proceedings; Abstract
U.S. Bureau of Mines