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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 31 - 40 of 183 listed alphabetically [list by similarity]
Biological resource status and trends: Contaminants in water [More info]
Information concerning status and trends of biological resources, focusing on contaminants in water
PDF Breccia-pipe uranium mining in northern Arizona; estimate of resources and assessment of historical effects [More info]
Estimates of uranium resources affected by land withdrawal, effects of previous breccia-pipe mining, water-chemistry data for streams and springs, and potential biological pathways of exposure to uranium and associated contaminants.
PDF Central Colorado Assessment Project - application of integrated geologic, geochemical, biologic, and mineral resource studies [More info]
Diverse geoscientific and biological data collected in anticipation of ecological, land-management, and mineral resource-related problems.
PDF Characterizing contaminant concentrations with depth by using the USGS well profiler in Oklahoma, 2003-9 [More info]
Use of specialized sampling equipment to study public water supply wells, with examples showing Arsenic in two aquifers.
Chesapeake Bay activities [More info]
Information on USGS studies of Chesapeake Bay, the nation's largest estuary, concerned with water quality, ecosystem history and change, vital habitat and biological resources, and land use studies.
PDF Chloride control and monitoring program in the Wichita River Basin, Texas, 1996-2009 [More info]
Chloride concentrations in this river have historically been high due to natural saltwater springs and seeps from geologic formations. We monitor the water to help assess the progress of human efforts designed to mitigate this problematic salinity.
Coal-bed methane: potential and concerns [More info]
Fact sheet in PDF format on occurrence and recoverability of coalbed methane in the U.S. and related environmental concerns.
PDF Coal-tar-based pavement sealcoat, polycyclic aromatic Hydrocarbons (PAHs), and environmental health [More info]
Pavement sealant contains chemicals that are known carcinogens, which get into nearby homes, lakes, and the air. Sealants based on coal tar release more dangerous chemicals than those based on asphalt.
Coastal and Marine Geology Program [More info]
Home page for Coastal and Marine Geology with links to topics of interest (sea level change, erosion, corals, pollution, sonar mapping, and others), Sound Waves monthly newsletter, field centers, regions of interest, and subject search system.
Coastal ocean modeling at the USGS Woods Hole Field Center [More info]
Fly-by and circulation movies, effluent concentration, tidal flushing, sea level, and temperature in Massachusetts Bay and Boston Harbor
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