On June 11, 2021, the Office and Management and Budget released its “Spring 2021 Unified Agenda of Regulatory and Deregulatory Actions” (Regulatory Agenda). It includes an entry for an interim final rule planned by the U.S. Environmental Protection Agency (EPA) entitled “Regulation of Persistent, Bioaccumulative, and Toxic Chemicals Under TSCA Section 6(h); Reconsideration and Extension of Certain Compliance Dates.” This action, planned for publication in September 2021, would be in follow-up to EPA’s March 16, 2021, proposed rule that sought additional public comment on final rules published on January 6, 2021, covering five persistent, bioaccumulative, and toxic (PBT) chemicals, i.e., decabromodiphenyl ether; 2,4,6-tris(tert-butyl)phenol; hexachlorobutadiene, pentachlorothiophenol; and phenol, isopropylated phosphate (3:1) (PIP (3:1)).

In the March 16, 2021, proposed rule, EPA stated that it sought additional public comment in “accordance with the January 21, 2021, Executive Order entitled “Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis” and other Biden-Harris Administration Executive orders and other direction.” EPA stated also in the proposed rule that it is “aware of and plans to consider revisions in response to implementation issues that have been raised by a range of stakeholders” and that “[‌i]n particular, EPA is seeking comment on newly-raised issues associated with the March 8, 2021, compliance date in the PIP (3:1) rule for certain regulated articles.”

Concurrent with EPA’s announcement on March 8, 2021, of the March 16, 2021, proposed rule that opened the PBT rules for comment, EPA issued a temporary 180-day “No Action Assurance” (NAA) indicating that EPA would exercise its enforcement discretion regarding the prohibitions on processing and distribution of PIP (3:1) for use in articles, and the articles to which PIP (3:1) has been added. EPA stated that it “is taking this [NAA] action to ensure that the supply chain of these important articles is not interrupted while EPA continues to collect the information needed to best inform subsequent regulatory efforts and allow for the issuance of a final agency action to extend the March 8, 2021, compliance date as necessary.” EPA stated that the NAA “is to remain in effect until either (1) 11:59 PM ET, September 4, 2021, or (2) the effective date of a final action addressing the compliance date for the prohibition on processing and distributing in commerce of PIP (3:1); including in PIP (3:1)-containing articles, whichever occurs earlier.”

The Regulatory Agenda entry for the interim final rule states that EPA intends to address compliance date issues in the action, and that if it “determines to further amend the recent final [PBT] rules, EPA will address those amendments in one or more future Regulatory Agenda entries.”