Contamination and pollution
Introduction of harmful substances into the environment by human action or natural processes.
Sustainability of natural attenuation of nitrate in agricultural aquifers [ More info] Nitrate from fertilizer is degraded by microbial action in the presence of solid minerals. This helps mitigate the effect of the nitrate, but begins to diminish the solid minerals needed. Will the process be sustainable in the long term?
The Border Environmental Health Initiative-investigating the transboundary Santa Cruz watershed [ More info] Study to identify risks to water resources in the SCW, and the potential consequences to riparian ecosystems and ultimately human health.
Trichloroethylene (TCE) in fractured bedrock, Naval Air Warfare Center, Trenton, N.J. [ More info] Research on contamination by trichloroethylene (TCE) in fractured rock at the Naval Air Warfare Center in Trenton, N.J. with links to site description, bibliography, online reports, and findings.
Understanding Contaminants Associated with Mineral Deposits [ More info] Outlines processes that control the release of metals and acidic waters from inactive mines and mineralized areas, the transport of metals and acidic waters to streams, and the fate and effect of metals and acidity on downstream ecosystems.
Upper Mississippi River basin: sediments, contaminants, and nutrients [ More info] Downloadable data and map images depicting sedimentation changes and contaminants in sediments in the upper Mississippi River.
Use of Semipermeable Membrane Devices (SPMDs) in Petroleum Polluted Waters [ More info] Provides a brief discussion of issues surrounding the use and capabilities of SPMDs, which can be used in monitoring petroleum spills.
USGS responds to Deepwater Horizon oil spill [ More info] Imagery, sampling information, and other data intended for use in assessing and remediating environmental problems related to the oil spill in the Gulf of Mexico in 2010
Using geochemical and statistical tools to identify irrigated areas that might contain high selenium concentrations in surface water [ More info] Program using pattern recognition analysis and classification models to determine areas of irrigated land with concentrations of selenium.
Wastewater Indicators Shown to Degrade in Streams [ More info] Research findings and examples of application to real problems--the stability of contaminants that indicate human wastewater needs to be considered.
Water co-produced with coalbed methane in the Powder River Basin, Wyoming: preliminary compositional data [ More info] Compositional data on water from 47 CBM wells sampled in the Powder River Basin, Wyoming. Data on major, minor, and trace elements are included.
Alphabetical Index of Topics
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