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Accession Number DE2012-1045856
Title Evaluating the Effects of Fly Ash Exposure on Fish Early Stages: Fathead Minnow Embryo-Larval Tests.
Publication Date May 2012
Media Count 31p
Personal Author L. R. Elmore M. K. McCracken M. S. Greeley
Abstract On December 22, 2008, a dike containing fly ash and bottom ash in an 84-acre complex of the Tennessee Valley Authority's (TVA) Kingston Steam Plant in East Tennessee failed and released a large quantity of ash into the adjacent Emory River. Ash deposits extended as far as 4 miles upstream (Emory River mile 6) of the Plant, and some ash was carried as far downstream as Tennessee River mile 564 ((approx)4 miles downstream of the Tennessee River confluence with the Clinch River). A byproduct of coal burning power plants, fly ash contains a variety of metals and other elements which, at sufficient concentrations and in specific forms, can be toxic to biological systems. The effects of fly ash contamination on exposed fish populations depend on the magnitude and duration of exposure, with the most significant risk considered to be the effects of specific ash constituents, especially selenium, on fish early life stages. Uptake by adult female fish of fly ash constituents through the food chain and subsequent maternal transfer of contaminants to the developing eggs is thought to be the primary route of selenium exposure to larval fish (Woock and others 1987, Coyle and others 1993, Lemly 1999, Moscatello and others 2006), but direct contact of the fertilized eggs and developing embryos to ash constituents in river water and sediments is also a potential risk factor (Woock and others 1987, Coyle and others 1993, Jezierska and others 2009).
Keywords Adults
Biological accumulation
Clinch River
Coal
Contamination
Embryos
Environmental effects
Fathead minnow
Feamles
Fish management
Fly ash
Food chains
Hatching
HEavy metals
In vitro
In vivo
Kingstron Steam Plant
Larvae
Methylmercury
Monitoring
Ontogenesis
Reproduction
Risk assessment
Sediments
Selenium
Tennessee River
Toxicity
Water quality


 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 68D - Water Pollution & Control
68C - Solid Wastes Pollution & Control
48B - Natural Resource Management
48G - Hydrology & Limnology
57H - Ecology
Corporate Author Oak Ridge National Lab., TN. Environmental Sciences Div.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1303
Contract Number DE-AC05-00OR22725

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