A framework and plan for modeling and managing toxic chemicals in Lake Michigan
- Environmental Protection Agency, Grosse Ile, MI (United States)
Although there have been substantial reductions in loadings and subsequent concentrations of many anthropogenic chemicals in the water, sediment, and ecosystem of Lake Michigan, levels for many remain above established standards or objectives. Also, ecological impacts remain probable as, for example, Lake Michigan lake trout do not reproduce naturally. A preliminary assessment of chemical sources and fate has been completed using a screening model. For PCBs this assessment indicates levels in lake trout will remain above 1 mg/kg even if all point or watershed sources could be eliminated. This is because of estimated atmospheric interaction and exchange. Because of the major ecological and economical consequences, the screening results need to be scientifically validated. This is being done by the Great Lakes National Program Office (GLNPO) in cooperation with the Office of Research and Development (ORD) and other state and academic organizations. A workplan has been prepared for developing and testing a series of more spatially resolved models for PCBs, atrazine, mercury, and trans-nonachlor. In addition, plans include the direct coupling of air and water transport and fate models. A summary of this workplan and preliminary modeling results will be presented and related to the issues of managing toxic substances in Lake Michigan and the Great Lakes.
- OSTI ID:
- 242372
- Report Number(s):
- CONF-9511137-; ISBN 1-880611-03-1; TRN: IM9626%%200
- Resource Relation:
- Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
A synthesis of the Green Bay (Lake Michigan) mass balance project: Implications for environmental science
Regional spatial and temporal interpolation of atmospheric PCBs: Interpretation of Lake Michigan mass balance data