Download or read book Developing Ambient Water Quality Criteria for Mercury written by D. R. J. Moore and published by IWA Publishing. This book was released on 2003-07-31 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Developing Ambient Water Quality Criteria for Mercury written by Dwayne Robert James Moore and published by . This book was released on 2003-01-01 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Water Quality Criteria for Mercury written by United States Environmental Protection Agency (EPA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-25 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ambient Water Quality Criteria for Mercury

Download or read book Development of Ambient Water Quality Criteria for Mercury written by Maine. Department of Environmental Protection and published by . This book was released on 2001 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quality Criteria for Water 1986 written by United States. Environmental Protection Agency. Office of Water Regulations and Standards and published by . This book was released on 1986 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Section 304(a) (1) of the Clean Water Act 33 U.S.C. 1314(a) (1) requires the Environmental Protection Agency (EPA) to publish and periodically update ambient water quality criteria. These criteria are to accurately reflect the latest scientific knowledge (a) on the kind and extent of all identifiable effects on health and welfare including, but not limited to, plankton, fish shellfish, wildlife, plant life, shorelines, beaches, aesthetics, and recreation which may be expected from the presence of pollutants in any body of water including ground water; (b) on the concentration and dispersal of pollutants, or their byproducts, through biological, physical, and chemical processes; and (c) on the effects of pollutants on biological community diversity, productivity, and stability, including information on the factors affecting rates of eutrophication and organic and inorganic sedimentation for varying types of receiving waters. In a continuing effort to provide those who use EPA's water quality and human health criteria with up-to-date criteria values and associated information, the document was assembled. The document includes summaries of all the contaminants for which EPA has developed criteria recommendations.

Download or read book Mercury written by U. S. Environmental Protection Agency and published by BiblioGov. This book was released on 2013-07 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.

Download or read book Ambient water quality criteria for mercury written by U.S. Environmental Protection Agency and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Water Quality Criteria for Mercury written by and published by . This book was released on 1980 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Aquatic Life Water Quality Criteria for Mercury written by and published by . This book was released on 1985 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Quality Criteria and Standards Plan written by and published by . This book was released on 1998 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Water Quality Criteria for Mercury written by N. K. Nagpal and published by BC Environment, Water Management Division. This book was released on 1992 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Aquatic Life Water Quality Criteria for Mercury written by Environmental Research Laboratory (Narragansett, R.I.) and published by . This book was released on 1985 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Water Quality Criteria for Mercury written by N. K. Nagpal and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ambient Water Quality Criteria for Mercury 1984 written by and published by . This book was released on 1985 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Drinking water Quality written by World Health Organization and published by World Health Organization. This book was released on 1993 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the methods used in the surveillance of drinking water quality in the light of the special problems of small-community supplies, particularly in developing countries, and outlines the strategies necessary to ensure that surveillance is effective.

Download or read book Office of Water Policy and Technical Guidance on Interpretation and Implementation of Aquatic Life Metals Criteria written by Martha G. Prothro and published by . This book was released on 1993 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memorandum transmits Office of Water policy and guidance on the interpretation and implementation of aquatic life criteria for the management of metals. This issue covers a number of areas including the expression of aquatic life criteria, total maximum daily loads, permits, effluent monitoring and compliance, and ambient monitoring.

Download or read book Water Quality for Ecosystem and Human Health written by Geneviève M. Carr and published by UNEP/Earthprint. This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is intended to provide an overview of the major components of surface and ground water quality and how these relate to ecosystem and human health. Local, regional and global assessments of water quality monitoring data are used to illustrate key features of aquatic environments, and to demonstrate how human activities on the landscape can influence water quality in both positive and negative ways. Clear and concise background knowledge on water quality can serve to support other water assessments.