Assessment of Certain European Dredging Practices and Dredged Material Containment and Reclamation Methods PDF Download
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Author:
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Category : Dredges
Languages : en
Pages : 244
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Author:
Publisher:
ISBN:
Category : Dredges
Languages : en
Pages : 244
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Author: Michael J. Bartos
Publisher:
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Category : Dredging spoil
Languages : en
Pages : 98
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Author:
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Category : Government publications
Languages : en
Pages : 1102
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Author:
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Category : Government publications
Languages : en
Pages : 1088
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Author: U.S. Army Engineer Waterways Experiment Station
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Category : Hydraulic engineering
Languages : en
Pages : 624
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Author: Wim Salomons
Publisher: Springer Science & Business Media
ISBN: 3642737099
Category : Science
Languages : en
Pages : 753
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This preface is being written at a time of exceptional public interest in the North Sea, following media head lines on toxic algal blooms, the mass mortality of common seals, and concern over pollution levels. These headlines may suggest that pollution of the North Sea is a recent event. This is not the case. Although no data are available (methods simply did not exist), it is safe to assume that emission (both into air and water) of heavy metals already started to increase in the 19th cen tury. The growth of cities and introduction of sewer sys tems led to the discharge of raw sewage and sewage sludge. The introduction of man-made (xenobiotic) organ ic chemicals and their subsequent emission into the North Sea commenced before the second world war. The shallower and coastal areas of the North Sea receive the highest concentrations of these pollutants. Not unexpectedly, these areas - some Norwegian fjords, the Dutch coast, the German Bight - show signs of ecosystem deterioration and eutrophication. A certain percentage of the pollutants does not remain in the North Sea but is "exported" to the Atlantic. The North Sea therefore con tributes to the global input of pollutants to the world's oceans. The major part of the pollutants accumulate in the North Sea and are incorporated in the bottom sediments. Although they are "out of sight", they should not be "out of mind".
Author: United States. Army. Corps of Engineers. Norfolk District
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Category : Chlordecone
Languages : en
Pages : 590
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Author:
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Category :
Languages : en
Pages : 680
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Category : Hazardous waste sites
Languages : en
Pages : 678
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Author: G.H. Bolt
Publisher: Springer Science & Business Media
ISBN: 9401719098
Category : Nature
Languages : en
Pages : 605
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About 20 years ago the emphasis in soil chemistry research switched from studies of problems related to scarcities of plant nutrients to those arising from soil pollutants. The new problems have come about because of the excessive uses of fertilizers, the inputs from farm and industrial wastes, the widespread applications of anthropogenie xenobiotic chemicals, and the deterioration of soil structure resulting from certain modern agriculture practises. The International Society of Soil Science (ISSS) recognized these problems and challenges. A provisional Working Group was set up in 1978 to focus attention on soil colloids with a view to understanding better the interactions wh ich take place at their surfaces. It was recognized that these interactions are fundamental to problems of soil fertility, as weIl as to those of soil pollution. After the group had received the official support of ISSS at its 12th International Congress in New Delhi in 1982 it set as its priority the assembling and evaluation of information, relevant to the soil and environmental sciences, concerning the composition and structure of soil colloids. Prior to that aseries of Position Papers were published in the Bulletin of the International Society of Soil Science (Vol. 61, 1981) outlining the state of knowledge about the composition and properties of soil colloids.
