Author: Publisher:
ISBN:
Category : DDT (Insecticide)
Languages : en
Pages : 66
Book Description
Great Lakes Water Quality Initiative Criteria Documents for the Protection of Wildlife (proposed)
Author: Wildlife Criteria Portions of the Proposed Water Quality Guidance for the Great Lakes System
Author: Federal Register
Author: Water Quality Guidance for the Great Lakes System
Author: Developing Ambient Water Quality Criteria for Mercury
Author: D. R. J. MoorePublisher: IWA Publishing
ISBN: 1843396378
Category : Science
Languages : en
Pages : 184
Book Description
This project examined the development of ambient water quality criteria (AWQC) for the protection of wildlife for mercury. Mercury is considered a serious risk to wildlife in many areas. As a result, the Great Lakes Water Quality Initiative and others have developed AWQC. These AWQC have been controversial, however, because (1) the AWQC were single values that did not account for site-specific conditions; (2) derivation of the AWQC relied on a single NOAEL, and (3) the AWQC had an unknown level of conservatism because of reliance on both average and conservative assumptions and uncertainty factors. Rather than develop a single value AWQC for total mercury, we derive an AWQC model that explicitly incorporates factors controlling bioavailability, methylation rates and bioaccumulation in the aquatic environment (e.g., pH, DOC, sulfate). To derive our AWQC model, field data was collected including numerous water quality parameters and total mercury and methylmercury concentrations in whole body fish tissue from 31 lakes in Ontario and an additional 10 lakes in Nova Scotia. An independent dataset consisting of 51 water bodies in the United States was then used to confirm the validity and robustness of the AWQC model. Next we combined the results of chronic-feeding studies with similar protocols and endpoints, in a meta-analysis to derive a dose-response curve for mink exposed to mercury in the diet. Using this approach, one can derive an LD5 or other similar endpoint that can then be used as the basis for deriving -wildlife AWQC. In the final step, we used a probabilistic risk model to estimate the concentrations of methylmercury in water that would lead to levels in fish sufficient for there to be a 10% probability of exceeding the mink LD5. This analysis was repeated for various combinations of pH and DOC. The result is an AWQC model for mercury for the protection of wildlife that can be used for a variety of site-specific conditions. This publication can also be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below
Code of Federal Regulations, Title 40, Protection of Environment, Pt. 100-135, Revised As of July 1 2012
Author: Office of the Federal Register (U.S.) StaffPublisher: Government Printing Office
ISBN: 9780160912061
Category : Law
Languages : en
Pages : 644
Book Description
Great Lakes Water Quality Issues
Author: United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Water ResourcesPublisher:
ISBN:
Category : Great Lakes (North America)
Languages : en
Pages : 368
Book Description
Channel Improvements, Columbia and Lower Willamette River Federal Navigation Channel, (OR,WA)
Author: Code of Federal Regulations
Author: Publisher:
ISBN:
Category : Environmental law
Languages : en
Pages : 656
Book Description
Special edition of the Federal Register, containing a codification of documents of general applicability and future effect as of July 1, ... with ancillaries.
The Code of Federal Regulations of the United States of America
Author: Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 1366
Book Description
The Code of Federal Regulations is the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.