Peer Review of 2024 Draft Risk Evaluation for 1,3-Butadiene
1,3-Butadiene is undergoing risk evaluation under the Toxic Substances Control Act. The current comment period is set to close on March 5, 2025. Upon publication of the Federal Register notice, EPA will extend the comment period for an additional 15 days. Comments can be submitted to docket EPA-HQ-OPPT-2024-0425 on www.regulations.gov until March 20, 2025.
In order to give the peer reviewers on the Science Advisory Committee on Chemicals (SACC) time to review any additional comments received, EPA rescheduled the Feb. 4, 2025, virtual preparatory meeting to March 25, 2025, 1PM-4PM Eastern Time (ET) and the Feb. 25-28, 2025, peer review meeting to April 1-4, 2025, 10AM to 5PM ET. Register for the SACC meeting here. You can register to listen in on the meeting at any time up until the end of the meeting on April 4.
If you would like to make oral comments during the April 1-4 meeting, you must register and send a written version of your oral presentation to muneer.alie@epa.gov by Friday, March 28 at 12:00 PM ET. Oral comments during the SACC meeting are limited to five minutes.
EPA will hold a virtual preparatory meeting on March 25, 2025, for the SACC and the public to consider and ask questions regarding the scope and clarity of the draft charge questions. Register for the meeting here. You can register to listen in on the meeting at any time up until the end of the meeting. If you would like to make oral comments during the preparatory meeting, you must register and send a written version of your oral presentation to muneer.alie@epa.gov by Friday, March 21, 2025, at 12:00 PM ET. Oral comments during the preparatory meeting are limited to five minutes and should be focused on the clarity and scope of the charge questions only. Oral comments on the draft 1,3-butadiene risk evaluation should be presented during the April 1-4, 2025, SACC meeting.
On Dec. 2, 2024, EPA released the draft risk evaluation for 1,3-butadiene and related documents for public comment and peer review. The documents are posted in docket EPA-HQ-OPPT-2024-0425 and are available for public comment until March 5, 2025. Follow the online instructions for submitting comments. Do not submit electronically any information you consider to be Confidential Business Information or other information whose disclosure is restricted by statute. When preparing and submitting your comments, see Commenting on EPA Dockets. The SACC will discuss the draft risk evaluation and related documents during a virtual peer review public meeting. EPA will use feedback from the SACC and public to inform the final risk evaluation.
EPA will be soliciting comments from the peer reviewers on the approach and methodologies used in the draft risk evaluation. The SACC’s peer review will inform the agency’s final risk evaluation under TSCA.
For additional information, contact the Designated Federal Official, Alie Muneer at muneer.alie@epa.gov.
- Draft Revised Charge to the SACC for 1,3-Butadiene (pdf)
- Final Agenda 1,3-Butadiene SACC Meeting April 2025 (pdf)
- 1,3-Butadiene SACC Meeting Presentation Day 1 April 2025 (pdf)
- 1,3-Butadiene SACC Meeting Charge Questions Days 2-4 (pdf)
- View the presentation for the March 25 virtual preparatory meeting.
- View the agenda for the March 25 virtual preparatory meeting.
- Register for the April 1-4 SACC meeting.
- Register for the March 25 virtual preparatory meeting.
- Read the draft risk evaluation.
- View the bios of prospective reviewers.