The Environmental Protection Agency (EPA) is adjusting the allowance system for the consumption and production of hydrochlorofluorocarbons (HCFCs). Under the Clean Air Act, EPA is required to phase out production and import of these chemicals in accordance with the Montreal Protocol on Substances that Deplete the Ozone Layer (Protocol). Under the Protocol, total United States HCFC production and consumption is capped, and will be completely phased out by 2030. Today's action announces the availability of annual production and consumption allowances for HCFC-22, HCFC-142b, HCFC-123, and HCFC- 124 for 2015-2019. This rule also makes minor changes to the reclamation regulations, updates the use restrictions to account for a recent amendment to the Clean Air Act, and finalizes a de minimis exemption to the use restrictions for certain uses of HCFC-225ca/cb and HCFC-124.