Summary of Provisions: Substances That Deplete the Ozone Layer

• Controlled substances include CFCs 11, 12, 113, 114, and 115, and halons 1211, 1301, and 2402. For purposes of calculating control levels, the production, imports, and exports of each chemical are weighted by an individual ozone depletion potential estimated for each chemical.
• Entry into force (EIF) requires at least eleven signatory nations representing at least two-thirds of estimated 1986 global consumption of controlled substances.
• Consumption and production of CFCs will be frozen at 1986 levels beginning six months after the date of EIF. (Consumption is defined as production plus imports minus exports to parties.)
• Consumption and production of halons will be frozen at 1986 levels beginning three years after EIF.
• Consumption and production of CFCs will be reduced to 80 percent of 1986 levels beginning in the period July 1993 to June 1994.
• Consumption and production of CFCs will be further reduced to 50 percent of 1986 levels beginning in the period July 1998 to June 1999.
• An additional 10 percent of production will be allowed for purposes of supplying developing nations until June 30, 1998. On July 1, 1998, this percentage will increase to 15 percent.
• Low-consuming developing nations are allowed to increase consumption up to 0.3 kilograms per capita for a period of ten years in order to meet "basic domestic needs." After ten years, the developing nations must follow the reduction schedule.
• Scientific, environmental, economic, and technological assessments by independent expert panels will be made beginning in 1990 and at least every four years thereafter.
• Import of any controlled substance in bulk from nonparty states is prohibited beginning one year after EIF. Import from nonparty states of products containing CFCs is banned beginning four years after EIF.
• Within five years after EIF, parties will determine the feasibility of banning or restricting trade in products made with CFCs.
• Canceling the 50 percent reduction step would require a vote of two-thirds of parties together representing at least two-thirds of the calculated level of consumption of all parties to the protocol.
• Other adjustments and reductions require a vote of two-thirds of parties together representing at least 50 percent ofconsumption.
• Addition of new controlled substances to the agreement requires a simple majority of two-thirds of the parties.

For more information about these provisitions. Please Visit: http://www.eoearth.org/article/Lessons_from_the_Montreal_Protocol