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Acid/Heavy Metal Tolerant Plants. A project near the former Anaconda Smelter site near Anaconda, MT, studies acid tolerant plants so that eventually large areas of mining impacted lands can be revegetated. The State of Montana's Natural Resource Damage Program and the MWTP jointly fund this project. Key treatments: source control, remote locations, and characterization. | Windows Media |
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Integrated Passive Biological Treatment Process. MSE demonstrated an Integrated Passive Biological Treatment Process to showcase a series of biological processes to mitigate acid mine drainage (AMD) from an abandoned mine - the Sure Thing Mine (near Elliston, MT). During 2004, MSE successfully modified the Treatment to improve the removal of the most recalcitrant metal--manganese--and alleviate plugging problems. Key treatments: acid drainage/water, biological, passive, remote locations, sustainability, and characterization. | Windows Media |
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In Situ Source Control of Acid Generation using SRBs - Lilly Orphan Boy Mine Water Cleanup. The Lilly/Orphan Boy Mine is a remote, abandoned mine that was discharging acid mine drainage into a tributary of the Clark Fork River. MSE/MWTP began an in-situ treatement-applying an organic nutrient to stimulate the naturally occurring Sulphate Reducing Bacteria (SRBs). A self-sustaining treatment now in its 11th year, the treatment has virtually no annual operating costs. The technology has been transferred from the MWTP to various U.S. Forest Service Sites. Key treatments: acid drainage/water, biological, passive, remote locations, sustainability, characterization. | Windows Media |
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Physical Solutions for Acid Rock Drainage (AMD) at Remote Sites. This project treats the acidic water emanating from the Susie Mine near Rimini, MT, using the fishbone technology proven in another project. We process the water-removing manganese and zinc-inside the mine and release the water when it is clean. Results show that the process can reduce metal loadings below the Montana Circular standards. Treatment: acid drainage, characterization. | Windows Media |
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Selenium Removal/Treatment Alternatives. MSE demonstrated three selenium removal technologies (Ferrihydrite Adsorption-Best Demonstrated Available Technology (BDAT), Catalyzed Cementation and Biological Selenium Reduction) at the Kessler Springs site at Kennecott Utah Copper Corporation, part of a superfund site. The results showed which technology performed the best. Key treatments: acid drainage/water, biological, passive, active, remote locations. | Windows Media |
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In-situ Biological Prevention of Acid Mine Drainage (Gilt Edge Mine), near Deadwood, South Dakota. MSE used an in-situ treatment to stabilize waste rock and treat biological water at a superfund site in South Dakota. We added carbon sources (animal feed-grade molasses and methanol) to saturated, acid-generating waste rock to create reducing conditions and eliminate the production of acid mine drainage. The process involved denitrification and sulfate reduction. Using an in-situ treatment was very cost-effective. Other areas and countries are interested in this technology. Key treatments: source control and biological treatment. | Windows Media |
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Speciation/bioavailability assessments of Pb in phosphoric acid-treated riparian soils along the Coeur D'Alene River in Idaho. In the Silver Valley, 30,000 tons of lead and nearly 100 million tons of mine wastes were discharged into the ecosystem. Tundra Swans feeding in the wetlands died as a result of eating led contaminated sediments. We treated the soil so that the lead bonded with phosphate-based material making it biounavailable to the birds. The birds still eat in the area but the lead is no longer ingested into their systems. Also, we developed a physiologically based extraction test model -the W-PBET- to measure Pb bioaccessibility from soils to waterfowl. Prior to this, live birds had to be used to determine decreases in lead bio-availability to waterfowl. | Windows Media |
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Long-Term Monitoring of a Permeable Treatment Wall. Approximately 50 gpm of zinc-, iron-, and manganese- contaminated water continuously drain from the Nevada-Stewart Tunnel, near Pinehurst, ID, into Pine Creek. Elevated levels of metals in the surface water can adversely effect the fish, fowl, and other wildlife. We installed a passive Apatite IIT reactive media treatment system at the mine to decrease zinc concentrations before the water flows into Pine Creek. In 2 years, 260 lbs of zinc and 500 lbs of total metals have been removed. | Windows Media |
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