Ecosystem services consideration in the remediation process for contaminated sites.

In 2009, the U.S. Environmental Protection Agency's Science Advisory Board recommended activities to advance consideration of ecosystem services (ES) to enhance existing remediation and redevelopment processes in the U.

On Assessing Risks to Fish Habitats and Populations Associated with a Transportation Corridor for Proposed Mine Operations in a Salmon-rich Watershed.

Natural resource extraction in large undeveloped areas-such as the Bristol Bay watershed in Southwest Alaska-often necessitates construction of roads that contribute substantial environmental risks. Herein, we attempt to address risks from a proposed mine transportation corridor in a virtually roadless watershed that crosses important salmon streams and rivers. The Bristol Bay watershed supports the largest sockeye salmon fishery in the world.

Evaluation of geochemical associations as a screening tool for identifying anthropogenic trace metal contamination.

Geochemical association plots are used as a screening tool for environmental site assessments and use empirical log-log relationships between total trace metal concentrations and concentrations of a major (i.e., reference) soil metal constituent, such as iron (Fe), to discern sites with naturally elevated trace metal levels from sites with anthropogenic contamination.

Ecological risk assessment issues identified during the U.S. Environmental Protection Agency's examination of risk assessment practices.

Recently, the U.S. Environmental Protection Agency examined its current risk-assessment principles and practices.