U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

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Anton, N.R., D.T. Shanight, C.S. Storrar, M.J. Fischer, E.M. Janoviak, and B. Lala,
36th Annual Meeting of the American Society of Mining & Reclamation, 3-7 June, Big Sky, MT, 26 slides, 2019

At the mine waste repository for the Upper Tenmile Creek Mining Area Superfund Site, Montana, collected leachate water has been managed in an active water treatment plant and pilot biochemical reactor (BCR) system, with disposal to a land application disposal (LAD) system since 2003. In 2018, the design was completed for a full-scale leachate passive treatment system utilizing parallel BCR cells, post-treatment settling, aeration, limestone channels, and a gravity-operated LAD system. The new system construction will begin in 2019, and the existing water treatment infrastructure will be decommissioned after the new system is operational and functional. The presentation includes the critical passive treatment design components and provides details of the pre-design investigation and design approach for the LAD system, including field siting for the LAD, test pits, soil lithology logging, permeability testing, soil metal sorption studies, metal sorption capacity and water balance calculations, and hydraulic design of the LAD. More information:

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