In accordance with the Montreal Protocol on Substances that Deplete the Ozone Layer (Protocol), EPA is adding chlorobromomethane (CBM) to the list of substances subject to production and consumption controls under the Clean Air Act (CAA) and EPA's implementing regulations. Today's action creates a new Group (Group VIII) of class I substances for CBM, and designates the value of CBM's "ozone depleting potential" (ODP) as 0.12. In accordance with the Protocol, today's action will phase out CBM production and consumption upon publication of this rule with permitted exemptions. Today's action also restricts trade in CBM with countries who are not Parties to the Beijing Amendments to the Protocol. EPA received no comments on the Notice of Proposed Rulemaking (NPRM) during the comment period between October 29, 2002 and November 29, 2002.