Science and Decisions


Book Description

Risk assessment has become a dominant public policy tool for making choices, based on limited resources, to protect public health and the environment. It has been instrumental to the mission of the U.S. Environmental Protection Agency (EPA) as well as other federal agencies in evaluating public health concerns, informing regulatory and technological decisions, prioritizing research needs and funding, and in developing approaches for cost-benefit analysis. However, risk assessment is at a crossroads. Despite advances in the field, risk assessment faces a number of significant challenges including lengthy delays in making complex decisions; lack of data leading to significant uncertainty in risk assessments; and many chemicals in the marketplace that have not been evaluated and emerging agents requiring assessment. Science and Decisions makes practical scientific and technical recommendations to address these challenges. This book is a complement to the widely used 1983 National Academies book, Risk Assessment in the Federal Government (also known as the Red Book). The earlier book established a framework for the concepts and conduct of risk assessment that has been adopted by numerous expert committees, regulatory agencies, and public health institutions. The new book embeds these concepts within a broader framework for risk-based decision-making. Together, these are essential references for those working in the regulatory and public health fields.




Chemical Assessments: EPA¿s New Assessment Process Will Further Limit the Productivity and Credibility of Its Integrated Risk Info. System


Book Description

The EPA¿s Integrated Risk Info. System (IRIS) contains EPA¿s position on the potential human health effects of exposure to more than 540 chemicals. Toxicity assessments in the IRIS database constitute the first 2 critical steps of the risk assessment process, which in turn provides the foundation for risk mgmt. decisions. Thus, IRIS is a critical component of EPA¿s capacity to support scientifically sound environmental decisions, policies, and regulations. This testimony discusses: (1) highlights of a 3/08 report, ¿Chemical Assessments: Low Productivity and New Interagency Review Process Limit the Usefulness and Credibility of EPA¿s Integrated Risk Info. System;¿ and (2) key aspects of EPA¿s revised IRIS assessment process, released on 4/10/08.




Science and Judgment in Risk Assessment


Book Description

The public depends on competent risk assessment from the federal government and the scientific community to grapple with the threat of pollution. When risk reports turn out to be overblownâ€"or when risks are overlookedâ€"public skepticism abounds. This comprehensive and readable book explores how the U.S. Environmental Protection Agency (EPA) can improve its risk assessment practices, with a focus on implementation of the 1990 Clean Air Act Amendments. With a wealth of detailed information, pertinent examples, and revealing analysis, the volume explores the "default option" and other basic concepts. It offers two views of EPA operations: The first examines how EPA currently assesses exposure to hazardous air pollutants, evaluates the toxicity of a substance, and characterizes the risk to the public. The second, more holistic, view explores how EPA can improve in several critical areas of risk assessment by focusing on cross-cutting themes and incorporating more scientific judgment. This comprehensive volume will be important to the EPA and other agencies, risk managers, environmental advocates, scientists, faculty, students, and concerned individuals.




EPA Chemical Assessments: Process Reforms Offer the Potential to Address Key Problems


Book Description

The EPA Integrated Risk Info. System (IRIS) contains EPA's scientific position on the potential human health effects of exposure to more than 540 chemicals. Toxicity assessments in the IRIS database constitute the first two critical steps of the risk assessment process. Thus, IRIS is a critical component of EPA's capacity to support scientifically sound environmental decisions, policies, and regulations. This testimony discusses: (1) the findings from a March 2008 report ¿Chemical Assessments: Low Productivity and New Interagency Review Process Limit the Usefulness and Credibility of EPA's Integrated Risk Info. System¿ and related testimonies; and (2) a preliminary evaluation of the revised IRIS assessment process EPA issued on May 21, 2009.




Chemical Assessments


Book Description

The Environmental Protection Agency (EPA) created the Integrated Risk Information System (IRIS) database in 1985 to help develop consensus opinions within the agency about the health effects from chronic exposure to chemicals. The health effects information in IRIS -- referred to as IRIS toxicity assessments -- provides fundamental scientific information EPA needs to develop human health risk assessments. This report determines the extent to which (1) EPA has evaluated demand for IRIS toxicity assessments from users inside and outside EPA; (2) EPA's process for nominating and selecting chemicals for IRIS toxicity assessment accurately reflects demand; and (3) EPA has implemented a strategy for addressing any unmet agency needs when IRIS toxicity assessments are not available, applicable, or current. Figures. This is a print on demand report.




Chemical Alternatives Assessments


Book Description

Chemicals are an essential part of everyday life and all too-often taken for granted, yet often portrayed negatively in the media. Concern over the deleterious effects of chemicals to the environment and human health have prompted governments in the developed world to establish screening programmes such as REACH and HPV Challenge to identify chemicals presenting the greatest degree of risk to health and the environment. While such programmes identify chemicals with the greatest risk, there is no ranking system for alternative chemicals, which while being potentially less harmful, still carry a degree of risk. This volume of the Issues in Environmental Science and Technology series investigates how the alternatives can be assessed and their risk determined. With contributions from experts across the globe, this volume addresses some of the key concepts behind risk assessment of alternative chemicals. Some of the current protocols adopted are discussed, and several chapters explore the topic in the context of industry, making this book essential reading for industrialists as well as academics, postgraduate students and policy makers.




Chemical Assessments


Book Description




Chemical Assessments


Book Description

The Environmental Protection Agency's (EPA) Integrated Risk Information System (IRIS) contains EPA's scientific position on the potential human health effects of exposure to more than 540 chemicals. IRIS is a critical component of EPA's capacity to support scientifically sound environmental decisions, policies, and regulations. GAO was asked to examine (1) the outcome of steps EPA has taken to ensure that IRIS contains current, credible chemical risk information, to address the backlog of ongoing assessments, and to respond to new requirements from the Office of Management and Budget (OMB); and (2) the potential effects of planned changes to the IRIS assessment process on EPA's ability to ensure that IRIS provides current, credible risk information. To do this work, GAO reviewed and analyzed EPA data and interviewed officials at relevant agencies....




Risk Assessment in the Federal Government


Book Description

The regulation of potentially hazardous substances has become a controversial issue. This volume evaluates past efforts to develop and use risk assessment guidelines, reviews the experience of regulatory agencies with different administrative arrangements for risk assessment, and evaluates various proposals to modify procedures. The book's conclusions and recommendations can be applied across the entire field of environmental health.