Terrestrial eco-risk -- Exposure assessment and risk characterization at Rocky Mountain Arsenal
- Enserch Environmental Corp., Denver, CO (United States)
- Rocky Mountain Arsenal, Commerce City, CO (United States)
Terrestrial eco-risk was assessed at Rocky Mountain Arsenal using data from about 9,700 soil samples and 1,400 biota samples from 19 taxa. These databases reflect considerable spatial variability in historical uses of the 27-square mile site, in concentration of the 14 contaminants of concern (COCs) in soil, and in the distribution of soil borings and surficial soil samples, as well as spatial variability in tissue concentrations of samples that were collected from locations that were biased toward areas associated with high COC concentrations or thorough to be uncontaminated. This variability plus the considerable uncertainty in associating biota tissue concentrations with exposure soil concentrations resulted in extensive discussion and the development of an innovative and effective protocol for using interpolated soil concentrations to estimate tissue concentrations that were compared to toxicity reference values for tissue and dose concentrations. The broad outlines of the Endangerment Assessment Technical Subcommittee members` uncharted journey through literature surveys, parameter quantification, statistical nuances, exposure area soil concentration estimation, and development of a proportionality constant (e.g., a site-specific biomagnification factor) to link soil and tissue concentrations will be described and linked to a more detailed afternoon poster presentation.
- OSTI ID:
- 33554
- Report Number(s):
- CONF-9410273-; TRN: IM9518%%374
- Resource Relation:
- Conference: 15. annual meeting of the Society of Environmental Toxicology and Chemistry (SETAC), Denver, CO (United States), 30 Oct - 3 Nov 1994; Other Information: PBD: 1994; Related Information: Is Part Of Society of Environmental Toxicology and Chemistry 15th annual meeting: Abstract book. Ecological risk: Science, policy, law, and perception; PB: 286 p.
- Country of Publication:
- United States
- Language:
- English
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