Environmental Effects of Dredging: Critical Body Residue (CBR) Approach for Interpreting the Consequences of Bioaccumulation of Neutral Organic Contaminants

Download or read book Environmental Effects of Dredging: Critical Body Residue (CBR) Approach for Interpreting the Consequences of Bioaccumulation of Neutral Organic Contaminants written by Tom M. Dillon and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical note describes a procedure for interpreting tissue residues of neutral organic chemicals generated in 28-day dredged material bioaccumulation bioassays. This interpretive guidance uses a critical body residue (CBR) of neutral organic chemicals reported for the fathead minnow, Pirnephales pmmelas. The CBR is based on a very large U.S. Environmental Protection Agency (EPA) acute toxicity database and well accepted quantitative structure activity relation- ships (QSARs). Guidance in this technical note is not appropriate when xenobiotic metabolism of neutral organic contaminants is likely. Background The evaluation of dredged material requires an assessment of 'unacceptable adverse impacts.' Testing to support this evaluation will often include sediment bioassays.