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Ecosystem Function in Alluvial Tailings after Biosolids and Lime Addition

^a College of Forest Resources, University of Washington, Seattle, WA 98195
^b USEPA Environmental Response Team, Edison, NJ 08837
^c Lockheed Martin, Edison, NJ 08837

View larger version (55K): [in a new window]   Fig. 1. Water-extractable, exchangeable, weak acid–extractable, and toxicity characteristic leaching procedure (TCLP) Cd, Pb, and Zn from alluvial tailings deposits along the Upper Arkansas River, Leadville, CO, before and for two years after amendment with municipal biosolids (224 Mg ha–1) and agricultural limestone (224 Mg ha–1). Bars represent standard error of the means.

View larger version (34K): [in a new window]   Fig. 2. Family and number of species of plants collected from the upstream uncontaminated control (UUC), contaminated vegetated area (CVA), and a biosolids- and lime-amended tailings deposit in 2000, Leadville, CO.