n-Methylpyrrolidone (NMP); Draft Revision to Toxic Substances Control Act (TSCA) Risk Determination; Notice of Availability and Request for Comment

Issuing agencies

Abstract

The Environmental Protection Agency (EPA) is announcing the availability of and seeking public comment on a draft revision to the risk determination for the n-methylpyrrolidone (NMP) risk evaluation issued under TSCA. The draft revision to the NMP risk determination reflects the announced policy changes to ensure the public is protected from unreasonable risks from chemicals in a way that is supported by science and the law. In this draft revision to the risk determination EPA finds that NMP, as a whole chemical substance, presents an unreasonable risk of injury to health when evaluated under its conditions of use. In addition, this draft revised risk determination does not reflect an assumption that all workers always appropriately wear personal protective equipment (PPE). EPA understands that there could be occupational safety protections in place at workplace locations; however, not assuming use of PPE reflects EPA's recognition that unreasonable risk may exist for subpopulations of workers that may be highly exposed because they are not covered by OSHA standards, or their employers are out of compliance with OSHA standards, or because OSHA has not issued a permissible exposure limit (PEL) (as is the case for NMP). This revision, when final, would supersede the condition of use-specific no unreasonable risk determinations in the December 2020 NMP risk evaluation (and withdraw the associated order) and would make a revised determination of unreasonable risk for NMP as a whole chemical substance.