The United States is phasing out ozone-depleting substances (ODSODSA compound that contributes to stratospheric ozone depletion. ODS include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, methyl bromide, carbon tetrachloride, hydrobromofluorocarbons, chlorobromomethane, and methyl chloroform. ODS are generally very stable in the troposphere and only degrade under intense ultraviolet light in the stratosphere. When they break down, they release chlorine or bromine atoms, which then deplete ozone. A detailed list (http://www.epa.gov/ozone/science/ods/index.html) of class I and class II substances with their ODPs, GWPs, and CAS numbers are available.) by reducing the production, import, and export of these substances. Learn about the requirements for companies that produce, import, and export ODS.

• Hydrochlorofluorocarbon (HCFC) Allowance System
• Importing ODS
• Labeling Ozone-Depleting Products
• ODS Recordkeeping and Reporting