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The document outlines the procedures for collecting and processing aquatic invertebrates and fish to analyze mercury levels as part of the National Water-Quality Assessment Program (NAWQA) by the U.S. Geological Survey. It details sampling approaches, quality assurance measures, and specific techniques for handling various species to ensure accurate data on mercury bioaccumulation in aquatic ecosystems. The report emphasizes the importance of trace-element-clean techniques to prevent contamination during sample collection and processing.

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Where is USGS gov located?

The USGS provides science about the natural hazards that threaten lives and livelihoods; the water, energy, minerals, and other natural resources we rely on; the health of our ecosystems and environment; and the impacts of climate and land-use change.

Who is the owner of the USGS?

The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology.

Is USGS.gov a reliable source?

USGS information is published in many media. Due to the scientific nature of the information, it passes through many quality assurance reviews, including rigorous peer review, prior to approval and release to ensure the reliability, objectivity, and integrity of the information.

Is USGS data free?

We are located at 12201 Sunrise Valley Drive Reston, VA 20192, USA.

Is USGS part of the government?

The United Services Automobile Association (USAA) is an American financial services company providing insurance and banking products exclusively to members of the military, veterans and their families.