Accession Number:

ADA282975

Title:

A Paradigm for Developing Sediment Toxicity Bioassays for the Regulatory Evaluation of Dredged Material

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s):

Report Date:

1994-06-01

Pagination or Media Count:

32.0

Abstract:

Sediment toxicity bioassays may be required in the regulatory evaluation of dredged material. Use of these tests in a major regulatory program implies they have been fully developed. This is not always true. Some bioassays are intuitively more appropriate and more advanced than others. Judging their relative developmental status, however, has been difficult because of a lack of guidance. To meet this need, input from users and developers of sediment bioassays was solicited over a 2-year period. That input is summarized in a four-phased developmental paradigm. Phase I includes activities often conducted by the initial test proponent e.g., speciesend point selection, statistical experimental design, and quality assurancequality control. Phase II involves evaluation of the bioassay by multiple laboratories. Phase II concludes with acceptance of the sediment bioassay by the scientific community. Activities under Phase III include intertest comparisons and field validationverification. Phase III terminates with the publication of a standard method by some standard- setting organization such as the American Society of Testing and Materials. Phase IV recommends a process for regulatory agencies U.S. Environmental Protection AgencyU.S. Army Corps of Engineers to judge the appropriateness of bioassays vis-a-vis dredged material evaluations. Bioassays, Development, Sediment.

Subject Categories:

  • Solid Wastes and Pollution and Control
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE