Effects of Remediation on Geochemistry and Hydrology of the Unsaturated Zone of Fluvial Tailings Deposits in the Floodplain of the Upper Arkansas River, Colorado

Walton-Day, Katherine ; Healy, Richard W. ; Maestas, Florentino B. ; Ranalli, Anthony J.
Organization: Society for Mining, Metallurgy & Exploration
Pages: 8
Publication Date: Jan 1, 2000
Water movement and water chemistry were monitored in the unsaturated zone at two sites in fluvial tailings deposits along the Arkansas River near Leadville, Colorado. One of the sites was remediated by the incorporation of lime and biosolids into the soil. Preliminary results, based on data collected during the 11 months following remediation, indicate that differences between the two sites can largely be attributed to heterogeneity of the deposits. Remediation has increased the alkalinity in the upper soil zone, but as of yet, there is no indication that soils at depths greater than 30 cm have been affected.
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