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IRIS Update: EPA Announces New Program to Revise Old Chemical Profiles

In Wednesday's Federal Register, EPA unveiled a new, streamlined process through which agency scientists will systematically review old chemical profiles in the IRIS database and update them with the latest toxicological information. With everything from Clean Air Act residual risk determinations about hazardous air pollutants to Superfund site cleanup standards to Safe Drinking Water Act regulations turning on the toxicological profiles housed in the IRIS database, it is a huge step in the right direction for EPA to be proactively screening old profiles to make sure they are up-to-date.

In 2003, the Eastern Research Group conducted a literature review to determine which chemicals in the IRIS database had been the subject of new toxicity or carcinogenicity studies since their last significant IRIS update. The researchers identified new health effects information for 169 chemicals (37% of those reviewed) that, if evaluated in detail, could possibly result in a change to an existing value. Additionally, the researchers found studies that could possibly fill data gaps for 281 chemicals (61% of those reviewed) whose IRIS entries were incomplete. Only a handful of chemical profiles made it through the Bush Administration’s IRIS assessment process, so it is unlikely the numbers have changed much since the Eastern Research Group’s study was published.

The IRIS Update Project, as described in Wednesday’s Federal Register notice, will focus on revising toxicological profiles that are more than 10 years old and will prioritize those chemicals that are most important for Clean Air, Superfund, and Clean Water program staff. The seven-step process that EPA has laid out seems reasonable enough, although the announcement is a bit thin on details for a majority of the seven steps. Here is how EPA describes the process:

  1. Publish an annual Federal Register notice announcing EPA’s IRIS Update Project agenda and calling for scientific information from the public regarding assessments on the agenda;
  2. Conduct a comprehensive search of the current scientific literature on each assessment;
  3. Develop draft health assessment documents using state of the science methods and guidelines;
  4. Conduct a combined simultaneous review of the draft assessment documents by EPA and other Federal Agencies via the Federal Standing Science Committee;
  5. Solicit public comments on draft assessments, followed by independent external peer review under the Federal Advisory Committee Act (FACA);
  6. Prepare final IRIS assessments that reflect public comments and independent expert review; and
  7. Replace the existing assessments with the final updated IRIS assessments on the IRIS website.

Wednesday’s announcement does not get into the details of Steps (3) through (7), and, of course, these are the aspects of the program that are most likely to lead to the heated debates that can derail an IRIS assessment. But it is good to see that EPA will be utilizing the FACA framework to engage external peer reviewers. FACA is not perfect, but it will provide a degree of transparency and protection from bias that will benefit the IRIS Update Program.

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Matt Shudtz | October 22, 2009

IRIS Update: EPA Announces New Program to Revise Old Chemical Profiles

In Wednesday’s Federal Register, EPA unveiled a new, streamlined process through which agency scientists will systematically review old chemical profiles in the IRIS database and update them with the latest toxicological information. With everything from Clean Air Act residual risk determinations about hazardous air pollutants to Superfund site cleanup standards to Safe Drinking Water Act […]

Ben Somberg | October 22, 2009

CPR Scholars’ Letter on OMB Intervention in EPA Science Programs

CPR President Rena Steinzor and board member Robert Glicksman sent a letter today to White House Science Adviser John Holdren and OIRA Administrator Cass Sunstein regarding OMB's role in EPA science decisions. The letter concerns two recent episodes involving OMB that we wrote about this week: one regarding the EPA's Endocrine Disrputor Screening Program (EDSP) […]

Christine Klein | October 21, 2009

Reversing the Environmental Deficit

As the recession grinds on, financial news continues to grab front-page headlines. The national deficit is a central flashpoint for controversy, triggering debate on the appropriate balance between spending today and increasing our children’s growing mountain of debt. In the midst of this battle, it is easy to overlook another looming problem: the growth of […]

Matt Shudtz | October 20, 2009

Sunstein Watch: OMB Meddling on Endocrine Disruptor Screening Program Means Shifting a Key Burden From Industry to EPA

Greenwire and the Los Angeles Times ran pieces last week shining a light into a dark corner where staff at the Office of Information and Regulatory Affairs once again meddled in scientific regulatory programs where they do not belong, second-guessing EPA’s administration of the Endocrine Disruptor Screening Program (EDSP). The program, mandated by Congress under […]

Rena Steinzor | October 19, 2009

Sunstein Watch: Old Habits Die Hard on the Regulatory Killing Ground; Don’t OMB Economists Have Better Things to Do Than Channel Industry Opposition to EPA Science?

Before Cass Sunstein had spent much more than a week as the official director of the Office of Information and Regulatory Affairs (OIRA), he invited us over to the White House to talk about how he wanted to shape his small office of economists and statisticians into a strong force for progressive policy within the […]

Shana Campbell Jones | October 19, 2009

Sen. Cardin’s Chesapeake Bay Bill Has Much to Laud, and a Bit to Improve

The Chesapeake Clean Water and Ecosystem Restoration Act of 2009, introduced today by Senator Ben Cardin (D-Md), is a marked improvement from legislation in past years and demonstrates the Senator’s continued leadership on restoring one of this country’s greatest natural resources. The bill rightly emphasizes the implementation and enforcement of the Bay-wide Total Maximum Daily […]

Catherine O'Neill | October 16, 2009

EPA Touts Remedy That Leaves Fish Off LA Coast Contaminated with DDT and PCBs for Years

With some fanfare, the EPA announced last week that it has selected a cleanup strategy for the Palos Verdes Shelf (PVS) Superfund Site off the coast of southern California – an area that has been termed “ the world’s largest DDT dump.” The EPA touts its plan as “a major milestone” that puts the site […]

Ben Somberg | October 15, 2009

EPA Announces CWA Enforcement Plan

The EPA today released a 15-page Clean Water Act Enforcement Action Plan prepared by the agency’s Office of Enforcement and Compliance Assurance. Back in early July, Lisa Jackson had directed the enforcmeent office to develop a plan, and to “report back to me within 90 days with your recommendations.” The EPA seems to be saying […]

Robert L. Glicksman | October 15, 2009

EPA Steps Up to the Plate on Clean Water Act Enforcement. Congress Needs to Step Up, Too

Just about a month ago, the New York Times published a story in which it documented an alarming failure on the part of federal and state officials to enforce the principal federal law designed to protect the quality of the nation’s surface waters, including rivers, lakes, and streams. According to that story, fewer than three […]