Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Development and Use of Site-Specific Chemical and Biological Criteria for Assessing New Bedford Harbor Pilot Dredging Project
Numerical site-specific chemical and biological criteria were established to assess the impact of a pilot dredging project on water quality at the New Bedford Harbor, Massachusetts, USA, Superfund site. Because most existing chemical concentrations in the water column and indigenous biota exceeded federal and state water quality limits, the derivation of site-specific criteria was required. Prior to any operational phases of the project (i.e., dike construction, dredging), criteria values were developed from background concentrations of PCBs and metals in water and biota, as well as for the toxic effects of water quality on the biota. During each operational phase of the project, water samples were collected, analyzed within 16 h, and the data supplied to a management committee in order to assess the environmental impact of the previous days operation. The ambient unfiltered water concentration of PCBs and metals were the only chemical or biological criteria exceeded. Modification of the next days' operations resulted in a return of these concentrations to background levels. The combined use of site-specific criteria and a real-time decision making management process allowed for successful completion of the project with a minimal effect on water quality. (Copyright (c) 1991 Springer-Verlag New York Inc.)
Development and Use of Site-Specific Chemical and Biological Criteria for Assessing New Bedford Harbor Pilot Dredging Project
Numerical site-specific chemical and biological criteria were established to assess the impact of a pilot dredging project on water quality at the New Bedford Harbor, Massachusetts, USA, Superfund site. Because most existing chemical concentrations in the water column and indigenous biota exceeded federal and state water quality limits, the derivation of site-specific criteria was required. Prior to any operational phases of the project (i.e., dike construction, dredging), criteria values were developed from background concentrations of PCBs and metals in water and biota, as well as for the toxic effects of water quality on the biota. During each operational phase of the project, water samples were collected, analyzed within 16 h, and the data supplied to a management committee in order to assess the environmental impact of the previous days operation. The ambient unfiltered water concentration of PCBs and metals were the only chemical or biological criteria exceeded. Modification of the next days' operations resulted in a return of these concentrations to background levels. The combined use of site-specific criteria and a real-time decision making management process allowed for successful completion of the project with a minimal effect on water quality. (Copyright (c) 1991 Springer-Verlag New York Inc.)
Development and Use of Site-Specific Chemical and Biological Criteria for Assessing New Bedford Harbor Pilot Dredging Project
W. G. Nelson (Autor:in) / D. J. Hansen (Autor:in)
1991
10 pages
Report
Keine Angabe
Englisch
Water Pollution & Control , Solid Wastes Pollution & Control , Natural Resource Management , Biological Oceanography , Physical & Chemical Oceanography , Ecology , Water quality management , Water pollution , Dredging , Biological effects , Water chemistry , Superfund , Water pollution effects , Waste disposal , Water pollution sampling , Concentration(Composition) , Decision making , Polychlorinated biphenyls , Massachusetts , Reprints , New Bedford Harbor , National Priorities List
New Bedford Harbor, Massachusetts, Dredging/Disposal of PCB Contaminated Sediments
| British Library Conference Proceedings | 1994
New Bedford Harbor Superfund Project
| British Library Conference Proceedings | 1999