Comment Period Extended for Draft Risk Assessments and Proposed Mitigation Measures for Sulfuryl Fluoride

This original announcement was published by the EPA on July 15, 2021. Click here for more information.


EPA has extended the public comment period for the draft risk assessments and proposed mitigation measures for sulfuryl flouride. Comments are now due by September 23, 2021 and should be submitted to docket EPA-HQ-OPP-2009-0136 at

For the registration review of sulfuryl fluoride, which includes all the uses of the pesticide, EPA released sulfuryl fluoride draft risk assessments (DRAs), including the combined ecological draft risk assessment and drinking water assessment, and the occupational and residential risk assessment for public comment in May 2021.

The DRAs are part of a multi-step process to identify risks as well as actions that can mitigate risks. After considering public comments, EPA will proceed with registration review by issuing the proposed interim decision, which will propose measures to reduce human health and ecological risks.

The Sulfuryl Fluoride Draft Interim Re-entry Mitigation Measures Memorandum also released in May 2021 outlines the new safety measures EPA is proposing for fumigation uses and is in response to the EPA Office of Inspector General’s December 2016 Report No. 17-P-0053 that was conducted to assess which additional safety measures could be taken to prevent serious injuries from use of this pesticide during residential fumigation.

After a thorough review of public comments, EPA will issue the Final Interim Re-entry Mitigation Measures Memorandum, including the label requirements for sulfuryl fluoride products.

Additional information on sulfuryl fluoride can be found on EPA’s website.