PFDA IRIS Assessment Finalized Amid Ongoing PFAS Reviews
This July, EPA released the final Integrated Risk Information System (IRIS) assessment for PFDA. PFDA’s toxicological review is the third completed IRIS assessment for a PFAS. Two additional assessments, for PFHxS and PFNA, are still in progress. Consistent with the draft, the final PFDA assessment concluded that evidence indicates “PFDA exposure is likely to cause […]
EPA Releases Draft IRIS Assessment of PFHxS and Related Salts
On July 24, 2023, EPA released a draft IRIS Toxicological Review of Perfluorohexanesulfonic Acid (PFHxS) and Related Salts. Comments on the draft assessment will be accepted through September 22, 2023. The IRIS assessment found that, given sufficient exposure conditions, PFHxS is likely to cause thyroid and developmental immune effects in humans. Other evidence suggests but […]
EPA Releases Draft Toxicological Review of Hexavalent Chromium
EPA recently released its draft Integrated Risk Information System (IRIS) toxicological review of hexavalent chromium (also known as chromium-6). Hexavalent chromium is used in pigment manufacturing, metal finishing and chrome plating, stainless steel production, leather tanning, and wood preservatives. It has various other industrial applications as well. The metal is also emitted into the air […]
National Research Council issues two reports reviewing EPA's chemical testing and science.
In the past week, the National Research Council (NRC) has released two reports on aspects of EPA’s chemical testing and science programs. Today, the NRC published a report reviewing EPA’s Integrated Risk Information System (IRIS) process for assessing chemical hazards and concluding that the agency has made substantial improvements in response to the NRC’s general […]
EPA Draft (IRIS) Ammonia Assessment Available for Public Comment
Integrated Risk Information System (IRIS): Today, EPA released for a 60-day public comment period the draft IRIS assessment for ammonia. Excerpts from the agency’s press release are provided below, and a copy of the draft assessment is avaialble here. IRIS is a human health assessment program that evaluates information on health effects that may result […]