By Lynn L. Bergeson and Carla N. Hutton
The U.S. Environmental Protection Agency (EPA) announced on September 20, 2019, that it will extend the public comment period for its proposed rule intended to reduce exposures to certain chemicals that are persistent, bioaccumulative, and toxic (PBT). 84 Fed. Reg. 36728. EPA identified five chemicals pursuant to Section 6(h) of the Toxic Substances Control Act (TSCA): decabromodiphenyl ether (DecaBDE); phenol, isopropylated phosphate (3:1) (PIP (3:1)), also known as tris(4-isopropylphenyl) phosphate; 2,4,6-tris(tert-butyl)phenol (2,4,6-TTBP); hexachlorobutadiene (HCBD); and pentachlorothiophenol (PCTP). The proposed rule would restrict or prohibit manufacture (including import), processing, and distribution in commerce for many uses of all of the chemicals except HCBD, for which EPA is proposing no regulatory action. For the other four chemicals, the proposed rule includes recordkeeping requirements, as well as additional downstream notification requirements for PIP (3:1). Comments are now due October 28, 2019. EPA is required to issue a final rule by December 2020. Our June 24, 2019, memorandum, “EPA Publishes Proposed PBT Chemicals Rule under TSCA,” provides a detailed review and analysis.