Title 42 › CHAPTER 85 — AIR POLLUTION PREVENTION AND CONTROL › SUBCHAPTER VI — STRATOSPHERIC OZONE PROTECTION › § 7671c
Companies must cut back how much they make of certain ozone‑destroying chemicals each year, following a set schedule. For carbon tetrachloride the allowed production was 100% in 1991, 90% in 1992, 80% in 1993, 70% in 1994, and 15% from 1995 through 1999, with production ending January 1, 2000. For methyl chloroform the limits were 100% in 1991–1992, 90% in 1993, 85% in 1994, 70% in 1995, 50% in 1996–1999, 20% in 2000–2001, and production must stop January 1, 2002. For other Class I substances the limits were 85% in 1991, 80% in 1992, 75% in 1993, 65% in 1994, 50% in 1995, 40% in 1996, and 15% in 1997–1999, with production ending January 1, 2000. The EPA Administrator must write rules within 10 months after November 15, 1990 to carry out these cuts and to phase out use on the same timetable. Limited exceptions are allowed in specific cases. From 2002 through 2005 the EPA may allow small amounts of methyl chloroform for essential uses if no substitute exists, and the EPA must allow small amounts of Class I substances for needed medical devices when the Commissioner agrees. The EPA may allow limited halons for aviation safety if the FAA finds no substitute. None of those exceptions may let any person produce more than 10% of their baseline year amount. Methyl bromide can be used for quarantine, preshipment, sanitation, and critical uses consistent with international rules, and limited production can be authorized for developing countries under caps and end dates (exceptions end by January 1, 2010, or January 1, 2012 for methyl chloroform). The President may allow one‑year national security exemptions with notice to Congress. Special limited halon allowances for fire suppression or Alaska oil and gas work are allowed under strict caps and time limits. The EPA must delay final cuts for methyl bromide until at least January 1, 2005 and follow the Montreal Protocol schedule as of October 21, 1998.
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The Public Health and Welfare, Source: USLM XML via OLRC
Legislative History
Reference
Citation
42 U.S.C. § 7671c
Title 42, The Public Health and Welfare
Last Updated
Sep 23, 2026
Release point: 119-110