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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.
The EPA¿s ability to effectively implement its mission of protecting public health and the environment relies largely on the integrity and transparency of: (1) its assessments of the potential human health effects of exposure to chemicals; and (2) its fed. advisory committees, which provide independent, expert reviews of EPA¿s scientific work. EPA¿s Integrated Risk Info. System (IRIS) program is critical in developing the agency¿s scientific positions on the potential health effects of exposure to toxic chemicals. EPA¿s Science Advisory Board convenes panels to review EPA¿s scientific assessments. This testimony highlights scientific integrity issues re: (1) the IRIS assessment process; and (2) fed. advisory committee policies and procedures. Illustrations.