National AML Strategic Plan | Instruction Memoranda | Technical Resources
BLM’s National Operations Center - Division of Resource Services (NOC) supports other BLM programs by providing a broad spectrum of services in areas including physical, biological, and social science assessments; architecture and engineering support; library assistance; mapping science; photo imaging and GIS applications.
The following are a selection of NSTC resources relating to abandoned mine lands:
Phytostabilization as a Remediation Alternative at Mining Sites
Technical Note 420, December 2006.
Microclimate Effects from Closing Abandoned Mines with Culvert Bat Gates
Technical Note 416, March 2005. Numerous bat species, including some threatened species, inhabit thousands of abandoned mines across the United States. Some of their bat habitat has been lost as mines are closed to reduce hazards to the public. Bat gates have been used to close some mines because they restrict public access while still allowing the bats to fly in and out. However, they are not appropriate for mines with trench portals. The Bureau of Land Management (BLM) proposed using culverts in the trenches and closing the culverts with bat gates. BLM worked with the Colorado School of Mines (CSM) to study the effects of this type of closure on the microclimate of the mines, which in turn could affect bats' fidelity to the habitat.
Abandoned Mine Waste Repositories: Site Selection, Design, and Cost
Technical Note 410, April 2003. BLM is conducting priority cleanups of abandoned mine sites on public lands. Typically, these sites contain tailings piles, cyanide heaps, and rock dumps that historically were constructed in or near drainages and now are releasing pollutants into watersheds. In compliance with regulations, BLM selects the most environmentally suitable site for removing mining waste and placing it into repositories. Repositories have different design features, and the design selected should be based on site-specific conditions and the results of water balance models. A Geographic Information System (GIS) can be a useful tool for screening and selecting a repository site. Industry sources and construction data from existing repositories can be used to predict construction costs. BLM found that the key factor in predicting cost is the volume of wastes to be placed.
Passive Treatment Systems for Acid Mine Drainage
Technical Note 409, April 2003. Passive treatment systems provide an alternative method for removing metals from acid mine drainage. There are several types of passive treatment systems; they may be used on their own or in combination to treat difficult effluents. The type of system selected is dependent upon the chemistry of the acid mine drainage and the flow of the discharge, as well as State and Federal regulations. Passive treatment systems do not require power and are less expensive than active treatment systems. They also require less maintenance, which makes them advantageous in remote locations.
Risk Management Criteria for Metals at BLM Mining Sites
Resource Note 390, October 2004. The primary objective of this report is to establish risk management criteria (RMC) for human health and wildlife.
Potentially Responsible Party Searches
Resource Note 57, January 2002. Provides a general overview and explanation of the Potential Responsible Party search process.
GeoCommunicator is the publication site for the Bureau of Land Management’s National Integrated Land System (NILS). GeoCommunicator provides searching, accessing and dynamic mapping of data for federal land stewardship, land and mineral use records, and land survey information. GeoCommunicator provides spatial display for land and mineral cases from BLM’s LR2000 system.
U.S. Department of Agriculture CERCLA Potentially Responsible Party Search Guide (June 2001) assists USDA employees and contractors involved in conducting searches for potentially responsible parties (PRPs) at environmental cleanup sites eligible for Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) actions and where the USDA is undertaking or involved in the CERCLA action.
U.S. Environmental Protection Agency PRP Search Manual (September 2003) provides an overview of the PRP search process, identifies tools for finding PRPs early in the process, and provides a framework for conducting thorough PRP searches that identify the universe of PRPs with comprehensive evidence of liability. It provides an outline of the general objectives of the PRP search, describes typical baseline and followup PRP search tasks, and provides specific tools and references from which the user may select those most appropriate for a particular search or site.