On August 5, EPA published an interim-final rule adjusting its system for calculating consumption and production allowances for hydrochlorofluorocarbons, ozone-depleting chemicals that commonly are used as refrigerants, in 2011. EPA made the adjustments based on an August 2010 federal appeals court decision that vacated a December 2009 final rule governing the allowances. The United States is required to phase out the use of hydrochlorofluorocarbons under the Montreal Protocol on Substances That Deplete the Ozone Layer. Though the rule is effective immediately, EPA will accept comments through September 6.