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Title Industrial wastes: effects on Trinity River ecology, Fort Worth, Texas / by C.E. Murphy ... [et al.].
Imprint Washington, DC : U.S. Government Printing Office, 1972.


 GovDocs Federal  EP 1.16:18050 DBB 12/71    AVAILABLE
Description ix, 163 p. : ill. ; 28 cm.
Series Water pollution control research series.
Note "Report date December 1971."
Bibliog. Includes bibliographical references (p. 81-97).
Subject Factory and trade waste -- Texas -- Trinity River.
Freshwater ecology -- Texas -- Trinity River.
Tarrant County (Tex.)
Summary Toxicity of industrial effluents discharged directly into or in close proximity to the Trinity River (Tarrant County, Texas) was investigated through a 27-month period. The investigation was concerned with four aspects--bioassay, growth and development, chemistry, and benthos. Three industries contributed toxic materials which had a significant influence on the surrounding aquatic community. Toxicity ranges were established for the respective effluents using mature minnows, fry and spawn. Effluents from a railroad equipment cleaning area, a plant producing cracking catalysts used in processing combustion engine fuels, and a sewage treatment plant influenced the water quality of the river downstream from the outfalls. The ranges of nitrates, phosphates, biochemical oxygen demand and specific conductance for the river were increased by the effluents.
Other Author Murphy, Clifford Elyman, 1912-
Texas Christian University. Dept. of Biology.
United States. Environmental Protection Agency. Office of Research and Monitoring.