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Reactive and Non-Reactive Transport Modeling for Wightman Fork, Summitville Mine, Colorado: Application of the OTIS/OTEQ Model to a Low-Flow Synoptic Study
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Ball, James W. ; Nordstrom, D. Kirk ; Runkel, Robert L. (2000). Reactive and Non-Reactive Transport Modeling for Wightman Fork, Summitville Mine, Colorado: Application of the OTIS/OTEQ Model to a Low-Flow Synoptic Study.
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Ball, James W. ; Nordstrom, D. Kirk ; Runkel, Robert L. (2000). Reactive and Non-Reactive Transport Modeling for Wightman Fork, Summitville Mine, Colorado: Application of the OTIS/OTEQ Model to a Low-Flow Synoptic Study.
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Organization: Society for Mining, Metallurgy & Exploration
Pages: 11
Publication Date:
Jan 1, 2000
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Abstract
Abstract
| Low-flow reactive-transport processes in Wightman Fork downstream of the Summitville Mine, south-central Colorado were simulated using the OTIS and OTEQ solute-transport models. The simulation was calibrated using data from a synoptic study conducted during October, 1998. Discharge over the 8-km reach from just below the mine site to the Alamosa River confluence ranged from 0.077 to 0.17 m3/s; travel time was 10.7 hours; pH ranged from 4.6 to 5.7. Simulations revealed that mass balance for SO4 was maintained, and that pH, Fe, and Al were non-conservative. Simulations allowing hydrous ferric and aluminum oxide or hydroxysulfate precipitation matched observed water quality conditions more closely than simulations without precipitation. |
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