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

Water pollution (13 items)
Soil pollution (1 items)
Air pollution (7 items)
Related topics:
Results 91 - 100 of 182 listed alphabetically [list by similarity]
Maps of the distribution and occurrence of ground water quality constituents and early 1970's land use in New Jersey [More info]
Links to maps of New Jersey showing nitrate levels, pesticides, Total Volatile Organic Compounds (VOCs), and radium in wells and land use of the 1970s.
Mercury Studies Team [More info]
Home page on hydrology studies on mercury, the most common contaminant of aquatic ecosystems, with links to general information, research team projects and data.
PDF Mercury and halogens in coal--Their role in determining mercury emissions from coal combustion [More info]
Explains the complex relationships between coal, mercury, and halogens in light of ongoing efforts to reduce the emission of mercury into the environment.
Mercury contamination of aquatic ecosystems [More info]
Fact sheet on mercury bioaccumulation and cycling in the environment. Also available in PDF format.
Mercury in stream ecosystems - publications [More info]
Publications dealing with the occurrence, methods of monitoring, and changes in the concentration of mercury within streams and nearby areas
Mercury in the environment [More info]
Fact sheet on mercury and the environment, including toxic effects, risk to people and wildlife, sources of mercury, environments where methylmercury is a problem, and mercury contamination.
Midcontinent Agricultural Chemical Research Program [More info]
Homepage for the research on occurrence, movement, flux, fate, and effects of agricultural chemicals, such as pesticides, in 25 states by the Midcontinent Agricultural Chemical Research Project (MACRP) with links to study results and publications.
PDF Monitoring for Pesticides in Groundwater and Surface Water in Nevada, 2008 [More info]
Study of pesticides in shallow groundwater and surface water to help decision makers evaluate and manage pesticide application practices to protect drinking water resources, especially deeper, potable groundwater as well as aquatic species.
Monitoring program for mercury in precipitation in Indiana [More info]
Precipitation-monitoring network for mercury in Indiana.
Multibeam data and socio-economic issues in west-central San Francisco Bay [More info]
Webpage based on USGS Open File Report 98-139 links to information on the San Francisco Bay estuary to study dredge disposal effects, fish habitats, sediment transport, rock pinnacles and navigation, and consequences of a large oil spill.
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