Glossary - U

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"USEPA" or "EPA" means the United States Environmental Protection Agency.

"USEPA-1987" means, for Acute Toxicity Testing, Guidelines for the Culture of Fathead Minnows Pimephales Promelas for Use In Toxicity Tests, USEPA, Environmental Research Laboratory, Duluth, MN, USEPA/600/3-87/001, January, 1987.

"USGS-83" means "Methods for the Determination of Organic Substances in Water and Fluvial Sediments," Book 5, 1983.

"USGS-76" means Fishman and Brown, "Selected Methods of the U.S. Geological Survey of Analysis of Wastewater," Open-file Report 76-177 (1976).