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The Phaseout of Ozone-Depleting Substances

What's New

EPA Publishes Revised Servicing Tail Report for HCFCs in U.S. A/C and Refrigeration Sector

International Agreement on HCFC Phaseout

Graphical Representation of Reductionsfor Developing Countries

EPA regulations issued under Sections 601-607 of the Clean Air Act phase out the production and import of ozone-depleting substances (ODS), consistent with the schedules developed under the Montreal Protocol Exit EPA Disclaimer. The phaseout has operated by reducing in stages the amount of ODS that may be legally produced or imported into the U.S. The Parties to the Montreal Protocol have changed the phaseout schedule over time, through the amendment process, and EPA has also accelerated the phaseout under its Clean Air Act authority. Eventually, once zero new production/import is allowed, ODS users must purchase domestically available supplies or use alternatives.

In the United States, ozone-depleting substances are regulated as Class I or Class II controlled substances. Class I substances have a higher ozone-depleting potential and have been completely phased out in the U.S., except for exemptions allowed under the Montreal Protocol. Class II substances are hydrochlorofluorocarbons (HCFCs), which are transitional substitutes for many Class I substances and are being phased out now.

 

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