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Author |
Brown, A. |
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Title |
Geohydrology and adit plugging |
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Book Chapter |
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Year |
1995 |
Publication |
Special Publication – Colorado Geological Survey, Report: 38 |
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Pages |
87-98 |
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Keywords |
acid mine drainage; Colorado; construction; discharge; geochemistry; ground water; hydrochemistry; hydrology; lithofacies; metals; methods; mines; monitoring; pH; pollutants; pollution; remediation; Rio Grande County Colorado; stream transport; Summitville Mine; tunnels; underground installations; United States; water table 22 Environmental geology; 21 Hydrogeology |
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Posey, H.H.; Pendleton, J.A.; Van Zyl, D.J.A. |
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Series Title |
Proceedings; Summitville forum '95 |
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188421651x |
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Notes |
Geohydrology and adit plugging; GeoRef; English; 1995-052685; Summitville forum '95, Fort Collins, CO, United States, Jan. 17-20, 1995 References: 6; illus. incl. 3 tables, geol. sketch map |
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Call Number |
CBU @ c.wolke @ 6467 |
Serial |
434 |
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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 |
Type |
Journal Article |
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Year |
2001 |
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Keywords |
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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Call Number |
CBU @ c.wolke @ 16511 |
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408 |
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Author |
Dunn, J.; Russell, C.; Morrissey, A. |
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Title |
Remediating historic mine sites in Colorado |
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Journal Article |
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Year |
1999 |
Publication |
Min. Eng. |
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Volume |
51 |
Issue |
8 |
Pages |
32-35 |
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Keywords |
Reclamation and conservation Groundwater problems and environmental effects geological abstracts: environmental geology (72 14 1) geomechanics abstracts: excavations (77 10 10) abandoned mine acid mine drainage environmental effect remediation United States Colorado |
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Abstract |
This article provides examples of reclamation and remediation in Colorado watersheds. The projects were undertaken by the US Environmental Protection Agency (EPA) Region 8, in cooperation with the Colorado Division of Minerals and Geology (CDMG), Colorado Department of Public Health and Environment (CDPHE), US Forest Service (USFS), the Bureau of Land Management (BLM), Bureau of Reclamation (BOR) and the US Geological Survey (USGS). These agencies collaborated on the environmental problems at abandoned mines. These samples involved the interaction of surface and ground waters with sulfide-bearing rocks, mine workings and surface mine spoils that produce acid solutions charged with heavy metals that are toxic to organisms. In these examples, acid mine drainage from historic mines in Colorado has been approached cooperatively with stakeholders. Each example emphasizes one aspect of the three-stage process. These stages include characterization and prioritization, hydrologic controls and the evaluation of long-term remediation activities. |
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Address |
J. Dunn, US Environmental Protection Agency, Region 8, 999 18(th) St., Suite 500, Denver, CO 80202-2466, United States |
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ISSN |
0026-5187 |
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Notes |
Remediating historic mine sites in Colorado; 0434641; United-States; Geobase |
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no |
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Call Number |
CBU @ c.wolke @ 17547 |
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398 |
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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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Abbreviated Journal |
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Volume |
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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Editor |
Severson, R.C. |
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Series Editor |
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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no |
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Call Number |
CBU @ c.wolke @ 6664 |
Serial |
390 |
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| Permanent link to this record |
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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 |
Type |
Book Whole |
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Year |
2000 |
Publication |
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Abbreviated Journal |
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Keywords |
Acid mine drainage Metals Environmental aspects Water quality Colorado Measurement |
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Thesis |
Ph.D. thesis |
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Publisher |
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 |
Serial |
357 |
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