Download or read book Kepone in the James River Estuary written by Michael A. Unger and published by . This book was released on 2017 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: In late 1975, a manufacturing facility in Hopewell, VA had not only exposed workers to the chlorinated pesticide, Kepone, but had also severely contaminated the James River estuary. To assess the potential risk to the public, Virginia initiated a finfish-monitoring program in late 1975. Over the next 40 years over 13,000 samples were collected from the James River and Chesapeake Bay and analyzed for Kepone. Kepone production was eventually banned worldwide. The average Kepone concentrations found in most species began falling when the production of Kepone ended, but the averages remained over the action limit of 0.3 mgkg-1 until the early 1980s. By 1988, few fish contained average Kepone concentrations greater than the action limit. Kepone was still detected (>0.01 mgkg-1 wet weight) in the majority of white perch and striped bass samples taken from the James River in 2009 and a fish consumption advisory is still in effect over forty years after the source of contamination was removed. Due to state budget cuts, monitoring of Kepone has not been conducted since 2009. As part of its 40th Anniversary, the Virginia Environmental Endowment -- which was established as part of the Kepone pollution court settlement in 1977 -- requested that VIMS conduct an updated study of the current levels of Kepone in the James River.
Download or read book Kepone in the Marine Environment written by and published by . This book was released on 1978 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kepone in Bed Sediments of the James River Estuary written by Richard Trotman and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remedial Conventional Measures for Capturing Stabilizing Or Removing Kepone in Bailey Bay Bailey Creek Gravelly Run and the James River Virginia written by United States. Army. Corps of Engineers. Norfolk District and published by . This book was released on 1978 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Kepone Study Results 1976 1978 written by C. A. Lunsford and published by . This book was released on 1980 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mathematical Simulation of Transport of Sediment and Kepone in the James River Estuary written by Yasuo Onishi and published by . This book was released on 1978 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kepone Its Effects on Life in the James River written by Harriet Ervin and published by . This book was released on 1991 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tylers Beach Maintenance Dredging James River written by and published by . This book was released on 1981 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kepone Monitoring at Skiffes Creek written by Harold D. Slone and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kepone entered the James River estuary from point sources of production and through runoff from unauthorized disposal sites in the vicinity of Hopewell, Virginia. The total quantity of Kepone released to the river is not known, however, about 1.5 x 106 kg were produced between 1966 and 1975. At present we estimate that 30,000 kg reside in contaminated sediments of the estuary. Bed sediments are contaminated from the source at Hopewell to Hampton Roads, a distance of 88 kilometers. Patterns of contamination vary with sediment type and distance from the source. Major Kepone sinks exist in the Jamestown - Dancing Point reach and in Burwell Bay. Sediments from these zones are generally finer-grained and more enriched in organic matter than elsewhere and these zones are sites of relatively high sediment accumulation and fast deposition. This extensive contamination of the river sediments by Kepone presents problems for managers having to make decisions on dredging actions in the river. The most important questions which need to be answered concerning dredging activities are: 1) Will dredging result in significant quantities of Kepone being released to the environment? 2) Will the releases spread the contamination or result in increased bioaccumulation of Kepone in organisms? 3) Will the spoil disposal methods release Kepone to the marine environment or ground water?
Download or read book Chesapeake Bay Environmental Data Directory written by Dan Jacobs and published by . This book was released on 1987 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nominations of Robert James Huggett William A Nitze Kay Collett Goss Terrence L Bracy Billy J Anotubby David Matt James and Norma G Udall written by United States. Congress. Senate. Committee on Environment and Public Works and published by . This book was released on 1994 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecotoxicology Problems and Approaches written by Simon A. Levin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecotoxicology is the science that seeks to predict the impacts of chemi cals upon ecosystems. This involves describing and predicting ecological changes ensuing from a variety of human activities that involve release of xenobiotic and other chemicals to the environment. A fundamental principle of ecotoxicology is embodied in the notion of change. Ecosystems themselves are constantly changing due to natural processes, and it is a challenge to distinguish the effects of anthropogenic activities against this background of fluctuations in the natural world. With the frustratingly large, diverse, and ever-emerging sphere of envi ronmental problems that ecotoxicology must address, the approaches to individual problems also must vary. In part, as a consequence, there is no established protocol for application of the science to environmental prob lem-solving. The conceptual and methodological bases for ecotoxicology are, how ever, in their infancy, and thus still growing with new experiences. In deed, the only robust generalization for research on different ecosystems and different chemical stresses seems to be a recognition of the necessity of an ecosystem perspective as focus for assessment. This ecosystem basis for ecotoxicology was the major theme of a previous pUblication by the Ecosystems Research Center at Cornell University, a special issue of Environmental Management (Levin et al. 1984). With that effort, we also recognized an additional necessity: there should be a continued develop ment of methods and expanded recognition of issues for ecotoxicology and for the associated endeavor of environmental management.
Download or read book NUREG CR written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contaminated Marine Sediments written by National Research Council and published by National Academies Press. This book was released on 1989-02-01 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pervasive, widespread problem of contaminated marine sediments is an environmental issue of national importance, arising from decades of intentionally and unintentionally using coastal waters for waste disposal. This book examines the extent and significance of the problem, reviews clean-up and remediation technologies, assesses alternative management strategies, identifies research and development needs, and presents the committee's major findings and recommendations. Five case studies examine different ways in which a variety of sediment contamination problems are being handled.
Download or read book Committee on Tidal Hydraulics Report written by and published by . This book was released on 1980 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Mesocosm Studies in Ecological Risk Assessment written by Robert L. Graney and published by CRC Press. This book was released on 2020-10-25 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Special Publication of the Society of Environmental Toxicology and Chemistry (SETAC) Aquatic Mesocosm Studies in Ecological Risk Assessment discusses the methods currently used for conducting simulated field studies and provides a series of case histories in which mesocosm type studies have been used to assess the impact of pesticides on aquatic ecosystems. Specific chapters address the dosing and exposure components of such studies and how they influence experimental design. Advantages and disadvantages of various statistical designs are addressed in detail. Regulatory aspects of the design and interpretation of these studies are also covered. The book will be a superb reference for aquatic biologists, ecologists, toxicologists, environmental toxicologists, environmental chemists, and regulatory personnel.
Download or read book Bibliography on Tidal Hydraulics written by and published by . This book was released on 1987 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
