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RECORD NUMBER: 12 OF 29

OLS Field Name OLS Field Data
Main Title Development and Use of Site-Specific Chemical and Biological Criteria for Assessing New Bedford Harbor Pilot Dredging Project.
Author Nelson, W. G. ; Hansen, D. J. ;
CORP Author Environmental Research Lab., Narragansett, RI.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/029 ;ERLN-1090;
Stock Number PB91-182329
Additional Subjects Water quality management ; Water pollution ; Dredging ; Biological effects ; Water chemistry ; Superfund ; Water pollution effects ; Waste disposal ; Water pollution sampling ; Concentration(Composition) ; Ecology ; Decision making ; Polychlorinated biphenyls ; Massachusetts ; Reprints ; New Bedford Harbor ; National Priorities List
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-182329 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 10p
Abstract
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.)