||Development and Use of Site-Specific Chemical and Biological Criteria for Assessing New Bedford Harbor Pilot Dredging Project.
Nelson, W. G.;
Hansen, D. J.;
||Environmental Research Lab., Narragansett, RI.
Water quality management;
Water pollution effects;
Water pollution sampling;
New Bedford Harbor;
National Priorities List
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.)
||Pub. in Environmental Management, v15 n1 p105-112 1991.
|NTIS Title Notes
||Reprint: Development and Use of Site-Specific Chemical and Biological Criteria for Assessing New Bedford Harbor Pilot Dredging Project.
||68D; 68C; 48B; 47D; 47C; 57H
||PC A02/MF A01