The SAB Dioxin Reassessment Review Subcommittee (DRRS) (of the SAB Executive Committee) met on November 1 and 2, 2000 to review revised sections of the EPA draft document Exposure and Human Health Reassessment of2,3,7,8-Tetrachlorodibenzo-p-Dioxin (TCDD) and Related Compounds (in addition, the DRRS met via public teleconference on January 23 and on April 23, 200 I, to discuss several issues tha...

EPA Grant Number: R82867505 Subproject: This is subproject number 05, established and managed by the Center Director under grant R828675 Center: Great Lakes Environmental Indicators Project Center Director: Gerald J. Niemi Title: Development and Evaluation of Chemical Indicators for Monitoring Ecological Risk Investigators: Deborah Swackhamer, Matthew Simcik Cooperators: David Mount, Gary Ankle...

Notice The material in this document has been subjected to U.S. Environmental Protection Agency (EPA) technical review and has been approved for publication as an EPA document. The information contained herein is offered to the reader as a review of the " state of the science " concerning wetland bioassessment and nutrient enrichment and is not intended to be prescriptive guidance or firm advic...

Introduction Children do not react like adults when exposed to environmental chemicals because their organ systems and metabolic capabilities are not fully developed. Children eat, breathe, and drink more, relative to their body mass, than adults. Their exposures to environmental chemicals differ from that of adults due to child-specific behaviors, such as hand-to-mouth and object-to-mouth acti...

Notice The material in this document has been subjected to U.S. Environmental Protection Agency (EPA) technical review and has been approved for publication as an EPA document. The information contained herein is offered to the reader as a review of the " state of the science " concerning wetland bioassessment and nutrient enrichment and is not intended to be prescriptive guidance or firm advic...

This is the story of a recent U.S. Supreme Court case on the use of cost-benefit analysis at the U.S. Environmental Protection Agency (EPA) for a regulation issued under the Clean Water Act (CWA). The case is Entergy Corp. v. Riverkeeper, Inc., et al. The case was not about the quality of the cost-benefit analysis, nor the fact that EPA conducted one, but whether EPA had CWA authority to base r...

The regulation of human exposure to potentially carcinogenic chemicals constitutes society's most important use of animal carcinogenicity data. Environmental contaminants of greatest concern within the USA are listed in the Environmental Protection Agency's (EPA's) Integrated Risk Information System (IRIS) chemicals database. However, of the 160 IRIS chemicals lacking even limited human exposur...

This paper discusses EPA’s acquisition and use of science in addressing dioxins (and other organochlorines) from the pulp and paper industry under the Clean Water Act and lead in soil at large Superfund mining sites. The common thread between both cases is the challenge posed by administering national pollution control programs while considering site-by-site variability in factors that influenc...

NOTICE This technical report does not necessarily represent final EPA decisions or positions. It is intended to present technical analysis of issues using data thatC are currently available. The purpose in the release of such reports is to facilitate the exchange of technical information and to inform the public of technical developments which may form the basis for a final EPA decision, positi...