Abstract

 An international Pellston Workshop was held in August, 2002, consisting of approximately 60 scientists who discussed the use of SQGs and other related tools, such as biological assessment methods for assessing contaminated sediments. There continues to be uncertainties on how to best integrate data generated using different assessment tools such as toxicity tests, benthic community evaluations, bioaccumulation studies, higher trophic level evaluations and sediment chemistry for accurate assessments of sediment quality and the risks associated with various sediment management options. A balance must be made between relying solely on numerical SQGs and the application of other assessment tools. A number of limitations and uncertainties were identified that have caused confusion and concern among practitioners in sediment assessment and management. The workshop addressed the following: scientific underpinnings and uncertainties of SQGs; how well SQGs represent potential for effects or no biological effects; how can SQGs be used in one or more frameworks to assess contamination; how should other assessment tools be used in combination with SQGs; and what assessment and management options for addressing complex systems. A summary of the workshop findings will be presented.