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Contamination and pollution
Introduction of harmful substances into the environment by human action or natural processes.
Subtopics:
Industrial pollution (25 items)
Nonpoint-source pollution (11 items)
Pesticide and herbicide contamination (24 items)
Pharmaceutical contamination (3 items)
Toxic radionuclide contamination (12 items)
Toxic trace element contamination (40 items)

Water pollution (13 items)
Soil pollution (1 items)
Air pollution (7 items)
Related topics:


Results 41 - 50 of 182 listed by similarity [list alphabetically]
PDF Examination of brine contamination risk to aquatic resources from petroleum development in the Williston Basin [More info]
Wetlands and oil wells shouldn't mix, but in some areas they do. This explains what problems may arise and how we study the effects of highly salty water produced by oil wells when it leaks into nearby wetlands and streams.
Framework for Assessing the Sustainability of Monitored Natural Attenuation [More info]
Research findings and examples of application to real problems--When can natural processes to reduce, or even destroy, contaminants at toxic waste sites be relied on?
Ground-water monitoring for pesticides in Wyoming [More info]
Sampling program to determine if pesticides are present in ground water, in accordance with Wyoming's Generic State Management Plan for Pesticides in Ground Water (SMP).
Groundwater quality in Coachella Valley, California [More info]
Five trace elements with human-health concerns were detected at high concentrations: arsenic, boron, fluoride, molybdenum, and strontium. Vanadium was present at moderate concentrations.
Groundwater quality in the Antelope Valley, California [More info]
Trace elements were present at high concentrations in 32% of the primary aquifers here, and at moderate concentrations in 17%. Of particular interest are aluminum, arsenic, vanadium, boron, fluoride, chromium, lead, and molybdenum.
Groundwater quality in the Central Sierra Nevada, California [More info]
Recent study indicates that inorganic trace elements and radioactive constituents are more likely to be subjects of concern in this less-developed area than anthropogenic organic compounds.
Groundwater quality in the Colorado River basins, California [More info]
Five trace elements with human-health concerns were detected at high concentrations: arsenic, boron, fluoride, molybdenum, and strontium. Chromium was detected at moderate concentrations.
Groundwater quality in the Indian Wells Valley, California [More info]
Five trace elements with human-health concerns were detected at high concentrations: arsenic, boron, molybdenum, strontium, and vanadium. Chromium and fluoride were detected at moderate concentrations.
Groundwater quality in the Madera and Chowchilla subbasins of the San Joaquin Valley, California [More info]
Uranium, arsenic, and nitrate were the inorganic constituents that were most frequently detected at high concentrations, mostly in shallower wells. High and moderate concentrations of arsenic were detected in deeper wells.
Groundwater quality in the Middle Sacramento Valley, California [More info]
Results of a survey of contaminants in untreated groundwater in this area. Arsenic and boron were the two trace elements detected most frequently at concentrations greater than the benchmarks.
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