In the October 1, 2018 Federal Register, the Environmental Protection Agency (EPA) proposed an amendment to its 2016 rule addressing refrigerant management requirements. In this proposed rule, EPA changed its legal interpretation and now proposes to revise the appliance maintenance and leak repair provisions to apply only to equipment using refrigerants containing a Class I or Class II substance. The 2016 rule instead included all refrigerants that were subject to the venting prohibitions. EPA is soliciting comments on whether the extension of subpart F refrigerant management requirements to substitute refrigerants should be rescinded. EPA also proposed extending the January 1, 2018 compliance date for when appliances containing only substitute refrigerants must comply with the appliance maintenance and leak requirements by six to twelve months. Public comments will be accepted through November 15, 2018.