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Metal Toxicity Thresholds for Important Reclamation Plant Species of the Rocky Mountains
EPA Grant Number: R829515C012Subproject: this is subproject number 012 , established and managed by the Center Director under grant R829515
(EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
Center: HSRC - Rocky Mountain Regional Hazardous Substance Research Center for Remediation of Mine Waste Sites
Center Director: Shackelford, Charles D.
Title: Metal Toxicity Thresholds for Important Reclamation Plant Species of the Rocky Mountains
Investigators: Paschke, Mark W , Redente, Edward F
Institution: Colorado State University
EPA Project Officer: Lasat, Mitch
Project Period: October 1, 2003 through September 30, 2006
RFA: Hazardous Substance Research Centers - HSRC (2001)
Research Category: Hazardous Waste/Remediation
Description:
Objective:The objective of this research project is to establish soil metal toxicity thresholds for numerous plant species that are commonly used in reclamation activities in the Rocky Mountains. This information currently is not available; therefore ecological risk assessments must rely on toxicity thresholds established for agronomic species. These crop plants have very different physiological characteristics and sensitivity levels than native species used in the reclamation of sites contaminated with metals. As a result, risk assessors may classify sites as phytotoxic to native species and call for intensive remediation activities that may not be necessary. The objective of this work is to provide a better estimate of the soil metal toxicity thresholds for four metals and a large number of native plant and a few commonly used introduced species. These threshold values would be used by those in the reclamation industry (government regulators and private entities) to assess more accurately risks associated with soil metal contamination and to better match revegetation plant species to site conditions.
Supplemental Keywords:Technical Outreach Services for Communities, TOSC, Technical Assistance to Brownfields, TAB, groundwater, industry sectors, waste, water, ecological risk assessment, ecology, ecosystems, ecology and ecosystems, environmental chemistry, environmental engineering, geology, geochemistry, toxicology, microbiology, hazardous, hazardous waste, mining-NAIC 21, selenium, acid mine drainage, acid mine runoff, aquatic ecosystems, arsenic, contaminant transport, contaminated sediments, contaminated marine sediment, contaminated waste sites, contaminated sites, contaminated soil, field monitoring, mining-impacted runoff, sediment transport, stream ecosystems, suspended sediment, sediments, mining, remediation, metal mobility, subsurface, extraction of metals, heavy metals, leaching of toxic metals, metal release, metal wastes, metals, metals-contaminated soil, mining wastes, remediation technologies, risk assessment,
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Industry Sectors, POLLUTANTS/TOXICS, INTERNATIONAL COOPERATION, TREATMENT/CONTROL, Scientific Discipline, Waste, RFA, Remediation, Geology, Waste Treatment, Ecological Risk Assessment, Chemicals, Hazardous Waste, Hazardous, Mining - NAIC 21, Ecology and Ecosystems, heavy metals, risk assessment, treatment, phytoremediation, extraction of metals, contaminated waste sites, mining wastes, acid mine runoff, acid mine drainage, metal release, remediation technologies, contaminant transport, leaching of toxic metals, metal wastes, contaminated sediments, metals, contaminated soil, plant species, metal remediation, environmental engineering, metals-contaminated soil, contaminated sites
Progress and Final Reports:
2004 Progress Report
2005 Progress Report
Main Center Abstract and Reports:
R829515 HSRC - Rocky Mountain Regional Hazardous Substance Research Center for Remediation of Mine Waste Sites