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Neukirchner, R.J.; Lord, G.G.; Nelson, J.D. |
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Title |
Covering of soft mine tailings |
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Journal Article |
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1998 |
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acid mine drainage; Colorado; disposal barriers; Eagle Mine; layered materials; mines; Minturn Colorado; pollution; remediation; Superfund; tailings; United States; waste disposal 22, Environmental geology |
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Proceedings of the ... International Conference on Tailings and Mine Waste, vol.5 |
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Tailings and mine waste '98; proceedings of the the Fifth international conference |
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1999-024056; Fifth international conference on Tailings and mine waste '98, Fort Collins, CO, United States, Jan. 26-28, 1998 References: 1; illus. incl. 1 table; GeoRef; English |
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CBU @ c.wolke @ 6172 |
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287 |
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Author |
Davies, G.J.; Holmes, M.; Wireman, M.; King, K.; Gertson, J.N.; Stefanic, J.M. |
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Title |
Water tracing at scales of hours to decades as an aid to estimating hydraulic characteristics of the Leadville Mine drainage tunnel |
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Journal Article |
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2001 |
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acid mine drainage Arkansas River Colorado drainage dye tracers field studies fluorescence ground water Lake County Colorado Leadville Mine Leadville mining district pH quantitative analysis recharge surveys tunnels United States water treatment 30 Engineering geology 21 Hydrogeology |
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Abstract |
The Leadville Mine Drainage Tunnel (LMDT) is a 3.3 kilometer structure that was constructed in the complicated geology of the Leadville mine district in the 1940's. Discharge from the LMDT is impacted by heavy metals and is treated at a plant built in 1992 operated by the United States Bureau of Reclamation. On the surface waste rock and other remnants of the mining operations litter the landscape and this material is exposed to precipitation. As a result of contact with this material, surface water often has pH of less than 3 and its containment and disposal is necessary before it impacts surface drainage and the nearby Arkansas River. Using a borehole drilled into the mine workings the U.S. EPA has devised a plan in which the impacted water is contained on the surface which then can be discharged into the mine workings to discharge from the LMDT and be treated. The percentage of water discharging from the mining district along the drainage tunnel is unknown, and since there is no access, information about the condition of the tunnel with regards to blockages is also relatively obscure. Application of quantitative water tracing using fluorescent dyes was used to model the flow parameters at the scale of hours in the tunnel and evaluate the likelihood of blockages. Because the tunnel has intersected several lithologies and faults, other locations such as discharging shafts, adits and surface streams that could be hydraulically connected to the LMDT were also monitored. An initial tracer experiment was done using an instantaneous injection, which was followed by additional injections of water. Another tracer injection was done when there was a continuous flow of impacted water into the workings. Analysis of the tracer concentration responses at water-filled shafts and at the portal were used to model the flow along the tunnel and estimate several hydraulic parameters. Waters in these settings are mixtures of components with different residence times, so, qualitative tritium data were used to evaluate residence times of decades. The combined injected tracer and tritium data as well as other geochemical data were used to infer the nature of flow and recharge into the tunnel. |
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Abstracts with Programs - Geological Society of America |
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Geological Society of America, 2001 annual meeting |
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2004-013418; Geological Society of America, 2001 annual meeting, Boston, MA, United States, Nov. 1-10, 2001; GeoRef; English |
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CBU @ c.wolke @ 16511 |
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408 |
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Author |
Hazen, J.M. |
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Title |
Acid mine drainage characterization and remediation using a combination of hydrometric measurements, isotopes and dissolved solutes |
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Book Whole |
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2000 |
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Acid mine drainage Metals Environmental aspects Water quality Colorado Measurement |
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Ph.D. thesis |
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University of Colorado, |
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Acid mine drainage characterization and remediation using a combination of hydrometric measurements, isotopes and dissolved solutes; Opac |
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Call Number |
CBU @ c.wolke @ 7243 |
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357 |
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Author |
Swoboda-Colberg, N.; Colberg, P.; Smith, J.L. |
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Title |
Constructed vertical flow aerated wetlands |
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RPT |
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1994 |
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acid mine drainage; aeration; Butte Montana; carbonate rocks; case studies; clastic sediments; Clear Creek County Colorado; Colorado; construction; controls; fluid dynamics; gravel; heavy metals; Idaho Springs Colorado; limestone; Montana; pollution; rates; sedimentary rocks; sediments; Silver Bow County Montana; substrates; tailings; United States; waste water; water; water management; water quality; water treatment; wetlands 22, Environmental geology |
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In the report, wetland technology is described in which the main reactive layer is limestone gravel (rather than organic material) which is overlain by a fine gravel filter and soil. The three-year project included laboratory and field studies. Vertical aerated wetlands, simulated by columns, constructed in the field and in the laboratory, were operated during the project. The report presents a summary of results given in previous reports and summaries of results obtained using water from Butte, MT, and field studies at the Rockford Tunnel, near Idaho Springs, CO. |
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University of Wyoming, L.W.Y.U.S. performer |
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Constructed vertical flow aerated wetlands; 1998-003373; GeoRef; English; Final report. Grant DI-196561 National Technical Information Service, (703)605-6000, order number PB96-196811NEG, Springfield, VA, United States |
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Call Number |
CBU @ c.wolke @ 6506 |
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226 |
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Author |
Emerick, J.C.; Wildeman, T.R.; Cohen, R.R.; Klusman, R.W. |
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Title |
Constructed wetland treatment of acid mine discharge at Idaho Springs, Colorado Guidebook on the geology, history, and surface-water contamination and remediation in the area from Denver to Idaho Springs, Colorado |
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RPT |
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Year |
1994 |
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C 1097 |
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Keywords |
acid mine drainage; Big Five Tunnel; Clear Creek County Colorado; Colorado; ecology; hydrology; Idaho Springs Colorado; metals; north-central Colorado; pilot plants; pollutants; pollution; reclamation; rivers and streams; surface water; tunnels; United States; USGS; water treatment; wetlands 22 Environmental geology; 21 Hydrogeology |
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Severson, R.C. |
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Stewart, K.C. |
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Constructed wetland treatment of acid mine discharge at Idaho Springs, Colorado Guidebook on the geology, history, and surface-water contamination and remediation in the area from Denver to Idaho Springs, Colorado; 1994-037816; GeoRef; English; 0364-6017 References: 6; illus. incl. 2 tables, block diags. |
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CBU @ c.wolke @ 6664 |
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390 |
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