Analyses of native water, bottom material, elutriate samples, and dredged material from selected southern Louisiana waterways and selected areas in the Gulf of Mexico, 1979-81

Abstract

selected chemical and biological constituents and physical properties. 2. Native-water and effluent samples were analyzed for phenols, selected pesticides (insecticides and herbicides), and other organic compounds using methods outlined by Goerlitz and Brown (1972). 3. Native-water and effluent samples were analyzed for oil and grease using methods described in "Methods for Chemical Analysis of Water and Wastes" (U.S. Environmental Protection Agency, 1979). 4. Native-water and effluent samples were analyzed for settleable matter as outlined in "Standard Methods for the Examination of Water and Wastewater" (American Public Health Association and others, 1976). 5. Samples were analyzed for chlorophyll (a and b) in phytoplankton using methods described by Greeson (1979). 6. Bottom-material samples were analyzed for heavy metals, nutrients and other constituents as outlined by Skougstad and others (1979), and for oil and grease using methods described in "Methods for Chemical Analysis of Water and Wastes" (U.S. Environmental Protection Agency, 1979).

Plan of study for selected toxic substances in the Calcasieu River, Louisiana

“…Cooperative studies between the Survey and the U.S. Army Corps of Engineers were conducted in 1975 through 1977 and in 1980 during and after dredging operations on the Calcasieu River. Water and bottom-material samples from sites extending from Lake Charles southward into the Gulf of Mexico were analyzed for inorganic constituents, nutrients!, minor elements, and pesticides (Demas, 1976;Lurry, 1983).…”