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RCED-93-62R 1 (1993-01-08)

handle is hein.gao/gaobackfv0001 and id is 1 raw text is: 


             United State.
GAO          General Accounting Office
             Washington, D.C. 20548

             Resources, Community, and
             Economic Development Division

             B-251122


             January 8, 1993                                IIli 1111
                                                               148522

            The Honorable John D. Dingell
            Chairman, Subcommittee on Oversight
              and Investigations
            Committee on Energy and Commerce
            House of Representatives

            Dear Mr. Chairman:

            The Montreal Protocol of 1987--an international agreement--
            calls for reductions in worldwide production and consumption
            of chloroflourocarbons (CFCs) and certain other substances
=,w         because of the danger they pose for the Earth's
m   PP      stratospheric ozone layer.1 Amendments to the protocol
    -       adopted in London during 1990 call for eliminating the
0     F     production of these substances by the year 2000. In
  '41       February 1992 the President responded to new evidence of a
            more dramatic deterioration of the ozone layer by ordering
    tZ      an end to production of these harmful substances in the
  W         United States by 1995. Although substitutes for ozone-
            depleting CFCs are available, their potential health risks
            and ecological dangers are not well understood. To aid the
  0         Subcommittee in evaluating the potential risks associated
            with the use of these substitutes, you requested that we
            provide a status report on the Environmental Protection
            Agency's (EPA) efforts to assess the environmental risks and
  o  availability of such substitutes. This letter presents the
            information you requested.
     . 0   In summary, EPA began studying the environmental risks and
     e      availability of substitutes for ozone-depleting substances
            in order to implement the phaseout called for by the
    1 M     Montreal Protocol of 1987. These preliminary analyses have
    tl      laid the foundation for subsequent work by noting that
            substitutes may pose risks to human health and the


            'Signatories of the Montreal Protocol agreed to control
            production and consumption of CFC-11, CFC-12, CFC-113, CFC-
            114, CFC-115, as well as halon-1211, halon-1301, and halon-
            2402.

            1                                GAOIRCED-93-62R, CFC Substitutes


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