Environmental Protection Agency
The U.S. Environmental Protection Agency (EPA) is proposing to revise the EPA's regulatory definition of volatile organic compounds (VOC) under the Clean Air Act (CAA). This action proposes to add (2E)- 1,1,1,4,4,4-hexafluorobut-2-ene (also known as trans-1,1,1,4,4,4- hexafluorobut-2-ene, and HFO-1336mzz(E); CAS number 66711-86-2) to the list of compounds excluded from the regulatory definition on the basis that this compound makes a negligible contribution to tropospheric ozone (O<INF>3</INF>) formation.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Part 51 [EPA-HQ-OAR-2021-0420; FRL-8371-02-OAR] RIN 2060-AV24 AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule. SUMMARY: The U.S. Environmental Protection Agency (EPA) is proposing to revise the EPA's regulatory definition of volatile organic compounds (VOC) under the Clean Air Act (CAA). This action proposes to add (2E) -1,1,1,4,4,4-hexafluorobut-2-ene (also known as trans -1,1,1,4,4,4-hexafluorobut-2-ene, and HFO-1336mzz(E); CAS number 66711-86-2) to the list of compounds ( printed page 25171) excluded from the regulatory definition on the basis that this compound makes a negligible contribution to tropospheric ozone (O 3 ) formation. DATES: Comments must be received on or before June 27, 2022. ADDRESSES: You may send comments, identified by Docket ID No. EPA-HQ-OAR-2021-0420, by any of the following methods: Federal eRulemaking Portal: https://www.regulations.gov/​ (our preferred method). Follow the online instructions for submitting comments. Mail: U.S. Environmental Protection Agency, EPA Docket Center, Docket No. EPA-HQ-OAR-2021-0420, Office of Air and Radiation Docket, Mail Code 28221T, 1200 Pennsylvania Avenue NW, Washington, DC 20460. Hand Delivery or Courier (by scheduled appointment only): EPA Docket Center, WJC West Building, Room 3334, 1301 Constitution Avenue NW, Washington, DC 20004. The Docket Center's hours of operations are 8:30 a.m.-4:30 p.m., Monday-Friday (except Federal Holidays). Instructi…
Other Federal Register documents from the same docket.
Citation: 87 FR 25170
