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The U.S. Geological Survey (USGS) Toxic Substances
Hydrology Program develops field methods to
measure a wide range of environmental properties, and develops
approaches and protocols used to assess or characterize
contamination.
The Program also develops laboratory analytical methods to measure a wide variety of chemicals in environmental media.
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USGS scientists on a boat are collecting sediments from the bottom of the Camp Far West Reservoir, California. Samples are collected in TeflonŽ core tubes for benthic-flux analysis. A davit and winch used for core sampling is on the right. A davit is a small crane on ships that raises and lowers objects over the side -- from the Benthic Flux of Dissolved Metals Photo Gallery
Bibliography
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