United States
Environmental Protection
Agency
Office of Air and Radiation
Washington D.C. 20460
EPA 400/1-88/005
August 1988
 Future Concentrations of
Stratospheric Chlorine and
Bromine

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FUTURE CONCENTRATIONS OF STRATOSPHERIC
         CHLORINE AND  BROMINE
                  by
            John  S.  Hoffman
  Director,  Division of Global Change
      Office of Air  and Radiation
 U.S. Environmental Protection Agency
                  and
           Michael J. Gibbs
               July 1988

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                              ACKNOWLEDGEMENTS*

       We would like to thank Rossana Florez and Brian Hicks of ICF
Incorporated for their assistance in making computer runs in preparation of
this paper.

       In addition, we would like to thank all the reviewers who helped to
improve the paper through their comments.  In particular, we are grateful to
the following reviewers:  Dan Albriton; Peter Connell; Hugh Farber; Paul
Fraser; Michael Harris; Mack McFarland; Michael Oppenheimer; F. Sherwood
Rowland; Richard Stolarski; and Nien Dak Sze.

       Finally, we would like to thank the EPA Science Advisory Board
Committee on Stratospheric Ozone for their review of the model that was used
to prepare this report.
*  Michael Gibbs is Vice President of ICF Incorporated and is employed in the
ICF office in Universal City, California.
                                      11

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                              TABLE OF CONTENTS


                                                                       Page

Acknowledgements  	  ii

Prologue  	   1

Findings  	   1

1.   Introduction  	   4

     1.1     The  Concept  and Meaning of Stabilization  	   5
     1.2     Report Organization  	   6

2.   Methods 	   7

     2.1     Emissions  Scenarios  	   7
     2.2     The  Effects  of Chemical Lifetimes on Chlorine
            Contributions  	   9

3.   Evaluation  of the Montreal  Protocol  	  13

     3.1     Potential  Future Clx Levels 	  13
     3.2     Impact of  Participation Assumptions 	  16
     3.3     Impact of  Substitution Assumptions  	  16
     3.4     Impact of  Post-2050  Growth Assumptions  	  18
     3.5     Potential  Future Halon Levels  	  19

4.   Reduction Scenarios to Stabilize Clx  and Halon Levels 	  20

     4.1     Identification of Necessary Reductions  	  20
     4.2     Impact of  Substitution and Post-2050 Growth Assumptions
            on Stabilization 	  21
     4.3     Potential  Future Halon Levels  	  23

5.   Implications of a Virtual Phaseout of CFCs for Chlorine Levels ...  24

     5.1     Virtual Phaseouts in 1998  	  24
     5.2     Speeding up or Delaying the Phaseout 	  26

6.   Summary 	  27

Exhibits  	  29

Appendix A: Concentrations Model 	 A-l

Appendix B: Emissions Scenarios 	 B-l

Appendix C: Ozone Depletion Estimates 	 C-l

                                     iii

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PROLOGUE

       The recently completed Summary of the Ozone Trends Panel Report
provides new information about recent trends in global ozone levels.  It
suggests that ozone depletion in certain seasons and at certain latitudes may
be larger than predicted by current atmospheric models and that "the observed
changes may be due wholly, or in part, to the increased atmospheric abundance
of trace gases, primarily chlorofluorocarbons (CFCs)."

       Atmospheric scientists are attempting to understand and model the
mechanisms that have produced ozone declines.  Such improvements in
understanding and models would allow for more accurate assessments of future
risks of ozone depletion.

       This report presents a method for evaluating risks that avoids the
uncertainties currently involved in linking atmospheric chlorine and bromine
levels and projected ozone depletion.  Instead, it relates rates of emissions
to stratospheric levels of chlorine and bromine.  Because chlorine and bromine
concentrations ultimately determine risk, this approach, although imperfect,
aids in assessing the potential risk of additional ozone depletion.  Using
this approach, potential changes to the current levels of chlorine and bromine
that could occur under various emission scenarios, including the Montreal
Protocol, are projected along with the relative contribution of different
chemicals (e.g., CFC-11; CFC-12; CFC-113; methyl chloroform; HCFC-22, etc.) to
these changes.  The report also examines the reductions in potential ozone
depleters needed in order to stabilize the atmosphere at current levels of
chlorine and bromine.  Finally, the chlorine levels associated with various
changes in the coverage, timing, and stringency of the Montreal Protocol are
projected.
FINDINGS

1.     Based on  reductions  required under the Montreal Protocol and assuming
       substantial  global participation, chlorine and bromine levels will
       increase  substantially  from current levels.

           o  By 2075,  even with  100 percent global participation in the
              Protocol,  chlorine  abundance is projected to grow by a factor of
              three to  over 8  ppbv from current levels of about 2.7 ppbv,
              assuming  methyl  chloroform emissions grow.

           o  If methyl chloroform emissions do not grow, either due to global
              agreement on  emission restrictions or due to a lack of demand,
              chlorine  levels  would still grow to over 6 ppbv by 2075, even
              with  100  percent participation in the Montreal Protocol.

           o  Because of long  atmospheric residence times and transport delays
              to the stratosphere, stratospheric chlorine levels will continue
              to grow for about 6-8 years even if emissions were totally
              eliminated.

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                                      -2-

 2.      An immediate 100 percent reduction in  the use of all fully-halogenated
        compounds and a freeze in methyl chloroform would be needed  to
        essentially stabilize  chlorine and halon atmospheric abundances at
        current levels during  the next 100 years.

 3.      Future chlorine growth has several sources.

            o  In our "standard" evaluation^ of the impact  of  the  Protocol,
               chlorine-containing chemicals not covered by the  Protocol
               account for about 40 percent of the projected growth  in
               stratospheric chlorine  levels by 2075  (assuming methyl
               chloroform use  grows as projected by some analysts).

            o  Emissions from  non-participant  nations are projected  to  account
               for about 15 percent of the chlorine growth  in  the  standard
               protocol scenario.

            o  About 45 percent of projected chlorine growth in  the  standard
               Protocol scenario stems from allowed use of  controlled compounds
               under that agreement.

            o  For the scenarios in which  methyl chloroform grows,  it accounts
               for over 80 percent of  the  growth in chlorine levels  associated
               with substances not covered by  the  Protocol. If  its  emissions
               do not grow from current levels, methyl  chloroform's
               contribution would be much  lower.

 4.      The projected levels of chlorine under the Montreal Protocol are
        influenced by the extent to which  the  use  of  partially-halogenated
        compounds increases as they substitute for  the  foregone  CFCs covered by
        the Protocol.

            o  Under worst case assumptions -- HCFC-22  (or  other compounds  such
               as HCFC-141b, -142b, or 123)2  substitute one-for-two  for all the
               CFC-11 and CFC-12 foregone  --  chlorine concentrations could
               increase by about an additional 1.0 ppbv by  2100  due  to  the
               increased use of these  substitutes.
     •*- Our  standard evaluation of the  Protocol  includes:   100 percent U.S.
participation;  94 percent  participation among other  developed nations;  65
percent participation  among developing nations; reduced growth in compound use
among non-participants;  no growth in compound use after 2050.

     2 "HCFC" stands for "hydrochlorofluorocarbon,"  i.e., chlorofuorocarbon
with a hydrogen atom.  The hydrogen atom reduces the amount of chlorine
transported to  the  stratosphere by increasing the oxidation rate in the lower
atmosphere.

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                                      3-

           o  Under more realistic substitution assumptions of one-to-five for
              foregone CFC-11 and CFC-12, chlorine levels would be increased
              by about an additional 0.4 ppbv by 2100, an amount which is
              about 10 percent of the increase associated with the continued
              use of the fully-halogenated compounds covered under the
              Protocol.

5.      Bromine levels will grow under the Montreal Protocol.

           o  Current abundances are on the order of 1 pptv for Halon 1211 and
              Halon 1301.

           o  By 2075 Halon 1211 is projected to grow to about 6 pptv, and
              Halon 1301 is projected to grow to nearly 13 pptv.

6.      Additional reductions of the fully-halogenated compounds would reduce
       future chlorine and bromine levels substantially.

           o  The reductions in chlorine levels will depend on the speed and
              magnitude of the emissions reductions.  The difference between
              peak chlorine levels between a 100 percent phaseout by 1990 and
              a 95 percent phaseout by 1998 (with 100 percent participation
              and a freeze on methyl chloroform emissions) would be 0.8 ppbv.
              The slower and less stringent phasedown would result in chlorine
              levels in excess of the peak level from the faster, more
              stringent phasedown for over 50 years.

           o  To stabilize chlorine abundances at current levels would require
              a 100 percent phaseout of the fully-halogenated compounds with
              100 percent participation globally, at least a freeze on methyl
              chloroform use, and substitution of partially-halogenated
              compounds at relatively conservative rates.  These relatively
              conservative rates of substitution would nonetheless allow HCFC-
              22-like compounds to grow at nearly 4.0 percent per year, to
              nearly 80 times current HCFC-22 use levels by 2100.  There would
              be a trade off between the ability to use increasing amounts of
              partially-halogenated substitutes and methyl chloroform.

           o  To stabilize bromine levels requires about a 100 percent
              phaseout of Halon 1301, and 90 to 100 percent phaseout of Halon
              1211, with 100 percent participation.

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                                      -4-

 1.     INTRODUCTION

        The recent Summary of the Ozone  Trends  Panel  Report  suggests  that

 current atmospheric models may be underpredicting  the  amount  of depletion for

 a given increase in atmospheric chlorine.   The ability of models to  project

 future depletion has been called into question.  This  analysis  does  not seek

 to address this problem -- that is,  it  does not focus  on determining how the

 models should be modified to better  depict  the quantitative relationship among

 atmospheric levels of chlorine and bromine,  and stratospheric ozone.

        Instead,  the goals of this report  are to:

        1.   assess how atmospheric levels  of chlorine and bromine will change
            over time under the Montreal Protocol;

        2.   assess the emissions reductions  necessary to stabilize the
            abundances of chlorine and bromine;

        3.   assess the relative contribution of different compounds to future
            increases in atmospheric  levels  of  chlorine and  bromine;

        4.   assess the potential contribution of partially-halogenated
            compounds such as HCFC-22, in  contributing  to future increases  in
            chlorine levels;  and

        5.   assess how atmospheric levels  of chlorine and bromine may change
            with  different coverage and  stringency  requirements  in the Montreal
            Protocol.


        The  merit  of examining the potential for future ozone  depletion by

examining future  levels  of chlorine  and bromine  stems  from  the  fact  that

chlorine and bromine  abundances  are  currently  thought  to be the  primary

determinants of the  risk of  ozone  depletion.   Consequently, information about

the abundances of chlorine and bromine  can be  of use to the decision making

process without making final  and certain conclusions about the quantitative

relationship between their abundances and ozone depletion.   Of course, to the

extent that other chemicals,  for example,  NOX from high speed  airplanes, or

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                                     -5-

climate-induced shifts in atmospheric dynamics threaten stratospheric ozone,

chlorine and bromine are inadequate measures of the potential risk of ozone

depletion.^

       1.1 The Concept and Meaning of Stabilization

       The concept of stabilizing current chlorine and bromine levels as a

means of preventing additional ozone depletion, or the risk of depletion, has

received widespread attention.  In particular, public references are

frequently made to an 85 percent reduction in CFC-12 which is required in

order to stabilize the chlorine contribution from that compound.

       While stabilizing chlorine and bromine from all chemical sources should

stabilize the risk of further ozone depletions in the absence of other

chemical or dynamical changes (i.e., assuming all other factors remain

unchanged), emphasis must be placed on the inclusion of all industrial sources

of these ozone-depleting chemicals.  As is shown below, the potential chlorine

contributions from non-regulated compounds (e.g., methyl chloroform, HCFC-22)

must be considered in order to achieve the goal of stabilizing chlorine and

bromine levels.  The risk of additional ozone depletion is a function of

increases in the levels of chlorine and bromine from regulated and non-

regulated compounds alike.  Thus, while an 85 percent reduction is sufficient

to stabilize chlorine levels from one compound (i.e., CFC-12), it is not
     •* One reviewer also noted that the chlorine and bromine values estimated
using the algorithm used in this analysis cannot be a perfect measure of ozone
depletion risk because the algorithm is based on results of 1-D models in
which the downward and poleward transport of chlorine (and bromine) are
ignored.  To the extent that some compounds contribute relatively more
chlorine (or bromine) to latitudes and altitudes of high ozone, simple
chlorine (and bromine) estimates will not reflect precisely the relative or
absolute ozone depletion potential of different compounds.  Investigations are
currently under way to evaluate the implications of the simplifying
assumptions used in this analysis for estimates of the relative risks
associated with the contributions of chlorine from each of the compounds.

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                                     -6-




 sufficient  for  stabilizing total chlorine levels if the production and use of




 non-regulated chlorine-contributing compounds are considered.




        One  other caveat is needed with regard to stabilization.  As suggested




 by  the  Summary  of  the Ozone Trends Panel Report, if the ozone layer has




 already begun to deplete at current atmospheric levels of chlorine and




 bromine,  stabilizing the contribution of chlorine or bromine from various




 chemicals would not reverse past depletion.  Furthermore, to the extent that




 global  ozone depletion is occurring due to dilution from the Antarctic ozone




 hole, stabilizing  chlorine at current levels would not completely prevent the




 occurrence  of future depletion associated with continued dilution from the




 existing  hole.  At this time, only preliminary estimates have been made of the




 ultimate  dilution  that will be associated with the current hole. There may be




 some additional hemispheric or global depletion still  to come  from the current




 hole.   Therefore,  the global ozone layer may already be  committed to  a




 residual  amount of depletion at current levels of chlorine and bromine which




 has not yet had time to occur.




        1.2  Report  Organization




        Section  2 of this analysis discusses  the methods  used to  estimate




 chlorine  and bromine levels.  Section 3 focuses on assessing the chlorine and




bromine levels  associated with the Montreal Protocol and their dependency on




various assumptions about participation, substitution, and emissions  after




2050.   This section also addresses the question of the effect of widespread




substitution of HCFC-22 or other partially-halogenated compounds.  Section 4




focuses on  determining the level of controls that would be necessary  to




stabilize the abundance of chlorine and bromine.  Section 5 examines the




effects on chlorine of different reduction stringencies and timings.

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                                     -7-

2.      METHODS

       Future chlorine (Clx) and bromine concentrations depend primarily on

future CFC and halon emissions and their atmospheric fate.   Scenarios of

emissions are analyzed based on estimates of current and projected future use

of chlorine and bromine containing compounds under various assumptions.

Compounds examined include CFCs (CFC-11, 12, 22, 113, 114, and 115),  methyl

chloroform (CH3CC13), carbon tetrachloride  (CC14),  and halons (Halon 1211 and

Halon 1301).   A parameterized model (presented in Appendix A) is used to

estimate chlorine and bromine concentrations for this wide range of emissions

scenarios.  While not considering all the factors that influence Clx and halon

levels (e.g., the impact of ozone depletion on atmospheric lifetimes is

omitted), the model provides a useful first order approximation (UNEP 1987) .

Exhibit  1 shows a conceptual diagram of the model (interested readers should

consult  the appendix for details).

       2.1 Emissions Scenarios

       In this analysis, the middle scenario of CFC and halon use and

emissions reported in EPA  (1988)  is used as a baseline "No Controls" scenario.

This scenario is based on  updated 1986 and  1987 data.  Appendix B shows the

global emissions in  this scenario and the other scenarios analyzed.  The

following factors are varied in the scenarios:  rate of participation in the
       It is assumed  in  this  analysis that natural sources of chlorine and
bromine remain unchanged.  The contribution from natural sources
is therefore ignored  in  computing changes in Clx and bromine from current levels

     -* Halon 1211  includes not only  chlorine but bromine as well; Halon 1301
includes bromine  (but no chlorine)   Bromine is believed to pose risks to
stratospheric ozone  (WHO 1986).  Halon  2402, which is included in the
Protocol, is not assessed due to lack of data.  The contribution of compounds
like HCFC-141b are included later in the analyses by assuming that such
partially-halogenated chlorine-containing compounds have the atmospheric
characteristics of HCFC-22.

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 Montreal  Protocol;  growth  in  compound use among the non-participants; growth

 in methyl chloroform use;  and extent to which partially-halogenated compounds

 are substituted for foregone  CFCs.  These factors are discussed more fully

 below.

        In the baseline  scenario  the average annual growth rate in demand for

 products  and services that would use CFCs, if they were available, is

 approximately 4.0 percent  from 1986 to 2000, and 2.5 percent from 2000  to

 2050,  for an average rate  of  2.8 percent from 1986 to 2050  (based on

 preliminary data,  growth in the  U.S. from 1985 to 1987 has  averaged 11.3

 percent per year,  ITC 1988).   It is assumed that production is constant

 following 2050.6

        It should be noted  that the conclusions of the analysis are not  overly

 sensitive to the baseline  emissions assumptions.  The baseline scenario is

 merely  a  convenient case that is used as a basis for comparison with other

 cases.  It is reasonable to consider the range of scenarios examined here as

 "what  if" scenarios.

        For purposes of evaluating  compliance with the Montreal Protocol,

 global  use is divided into six regions:  U.S.; USSR and Other East Bloc; Other

 Developed Nations (i.e.,  Europe, Japan, Australia and New Zealand); China and

 India;  Developing Nations  I (i.e., developing nations with  relatively higher

 levels  of per capita CFC use); and Developing Nations II  (i.e., developing

nations with  relatively lower levels of per capita CFC use) (see EPA 1988,

Chapter 4).   Each  region is simulated to participate in the Protocol to

various extents:   the U.S.  is  assumed to participate;  the USSR and the  Other

Developed Nations  are assumed  to achieve 94 percent participation;  and
     6 This assumption of constant production after 2050 is relaxed below in
some scenarios to evaluate its implications for Clx and halon levels.

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                                     -9-

Developing Nations are assumed to achieve 65 percent participation (see EPA

1988 for a discussion of the participation assumptions).'  Alternative

participation assumptions are explored below.

       2.2 The Effects of Chemical Lifetimes on Chlorine Contributions

       The emissions of the compounds are translated into Clx and halon levels

using atmospheric lifetimes and conversion factors for each compound (see

Exhibit 2).  The lifetimes indicate how long the chlorine associated with the

compounds will remain in the atmosphere.   As shown in the exhibit, the

lifetimes of the compounds vary from about 8 years (CH3CC13) to 380 years

(CFC-115).  For the compounds other than the halons,  the conversion factors

convert emissions in millions of kilograms into ppbv of Clx and adjust for the

relative efficiencies of the various compounds in supplying ozone-depleting

chlorine to the stratosphere.  The conversion factors for the halons convert

millions of kilograms of emissions into atmospheric abundances in pptv for

each compound.  Also used is a mixing time of 3.5 years to simulate the time

needed for the emissions to rise into the stratosphere.

       Note that the chlorine contribution of Halon 1211 is not counted in the

Clx levels reported below.  Because halons are treated separately in the
      '  The basis for  these participation estimates includes participation in
the Protocol process to date and judgments about the current receptiveness of
nations to the Protocol.  Alternative judgments are possible, and are tested
below. Of note is that the non-participants are assumed to experience reduced
use of the compounds in response to the development (by the participants) of
technologies that do not rely on ozone depleters (see EPA 1988, Appendix C).
For the years following 2000, the non-participants in the USSR, East Bloc, and
other developed nations are assumed to experience 37.5 percent of their
baseline growth rate,  or about 0.94 percent growth per year.  In developing
nations it is assumed  that non-participants experience 50 percent of their
baseline growth rate,  or about 1.25 percent per year.

      ^ The lifetimes are "e-folding" lifetimes, meaning that after  the period
of one lifetime has elapsed, the remaining level in the atmosphere  is 1/e or
about 37 percent of the original value.  See Appendix A for a description of
the model used to compute atmospheric levels.

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                                      10-

Protocol and contribute primarily bromine, halon abundances are reported

separately.

       To assess  the extent to which emissions result in increases in Clx

levels, the current Clx and halon levels associated with these compounds are

required.9  As  shown in Exhibit 3, the anthropogenic-related Clx levels

estimated with  the model  (totalling about 2.7 ppbv across the compounds

included in the model) are similar to those estimated by Connell and Wuebbles

(1986) and reported by WMO (1986).10  Also shown are halon levels.

       Based on the estimated values  of the compound lifetimes and conversion

factors, the level of emissions that  would maintain the Clx and halon

abundances at their 1985  simulated values can be computed.  At these estimated

levels of emissions, the  decline  in Clx and halon levels due to natural

atmospheric removal processes would be exactly balanced by additional

emissions.  Exhibit 3 shows  the levels of emissions that are consistent with

stabilizing the chlorine  contribution from each compound.  These  emissions are

much smaller than the estimated 1985  levels of global emissions  (also shown in

Exhibit 3) , indicating that  reductions in emissions are required  in order to

stabilize the Clx and halon  levels from individual compounds at their 1985

values.  Total  chlorine can  also  be stabilized by cutting back some compounds

more and others less than is shown in Exhibit 3; in fact,  it would make little

sense to stabilize total  chlorine by  stabilizing each compound's  individual

contribution.   The estimates of changes in Clx and halon levels reported below

are computed using the 1985 values as base values.
       The background  level of Clx from other sources is assumed to remain
constant, and is consequently not considered in this analysis.  The abundance
of halons comes solely from human sources, although there are other sources of
bromine in the atmosphere  (see WMO 1986).

     10 These estimates do not include the naturally occurring chlorine from
CH3C1.

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                                      11




       The difference in the compounds'  atmospheric lifetimes have important




implications for the relative contributions that the compounds make to




chlorine levels over time.  For example,  it has been estimated that CFC-11 and




CFC-12 have approximately the same ozone-depleting potential on a mass basis.




This implies that at constant and equal levels of emissions, each of the




compounds would contribute the same amount of chlorine to the stratosphere




once steady-state conditions were achieved.




       However, because the two compounds have different lifetimes, steady-




state conditions are not achieved at the same rate for each.  Additionally,




because the lifetimes are very long for each compound and because atmospheric




conditions are not near steady state given current levels of emissions,  it




will take many decades before steady state conditions are approached.




Therefore, as shown in Exhibit 4, the contributions of chlorine from CFC-11




and CFC-12 would not be equal over the next 50 years from equal annual




emissions of 300 million kilograms per year.




       The differences in contributions of chlorine between these two




compounds is emphasized in Exhibit 5 which shows the contribution over time




from a single year of emissions of 300 million kilograms.  Initially,  CFC-11




contributes significantly more chlorine.  Because CFC-12 has a longer




lifetime, its contribution declines more slowly over time, and after about 100




years its contribution exceeds the contribution from CFC-11.  Exhibit 6 shows




the contribution of each of the compounds relative to the CFC-11 contribution




on a year-by-year basis.  As expected, the relative contributions  of CH3CC13




and HCFC-22 decline rapidly due to their short lifetimes.  However, to the




extent that one is concerned about near-term increases in Clx on the order of




1.0   2.0 ppbv, near-term increases in CH3CC13 emissions must be considered




carefully.  Although the compounds with longer lifetimes show increasing

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                                      12-




 chlorine contributions over time relative to CFC-11, CH3CC13 emissions present




 near-term  risks  from near-term emissions.  (Other short-lived compounds should




 similarly  by  examined.)  Therefore, in evaluating ozone-depletion risks based




 on Clx contribution, one must make judgments about relative concern to be




 placed on  the potential for near-term depletion.




        By  changing  the radiative properties of the atmosphere, CFC emissions




 also  warm  the Earth's surface.  By limiting the use and emissions of the




 fully-halogenated CFCs, the Montreal Protocol is expected to reduce the




 contribution  of  these compounds to this  "greenhouse effect" by about 80




 percent by 2100.  This estimate is based  on the assumption  that currently-




 anticipated control options are used to  reduce CFC use and  emissions.




        However,  if  the mix of CFC use among compounds shifts significantly,




 the resulting greenhouse  impact could be  significantly different because  the




 compounds  have different  impacts on global warming.  As shown in Exhibit  7,




 the relative  greenhouse impacts of the various compounds differ over time for




 equal  amounts of emissions, and the relative impacts of the compounds with the




 longer  lifetimes  are quite high.




        As  allowed under the Montreal Protocol,  the  use of  the various CFCs can




be  traded  off at  rates that are defined  by estimates of their steady-state




relative ozone-depleting potentials.  For example,  about 1.7 kilograms of CFC-




115 can be  traded off for  1.0 kilograms  of CFC-11.  If this theoretically




permissible tradeoff were  to occur between all the  controlled CFCs and CFC-115




 (a highly unlikely  event), the expected  CFC contribution to the greenhouse




effect  would  almost double as compared to the standard Protocol scenario by




2100.    Recognizing  that the framers of the Protocol were "conscious of the




potential climate effects of [CFC] emissions," this analysis indicates that

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                                      13-

th e tradeoffs among compounds allowable under the Protocol could

unintentionally worsen the greenhouse impacts of the CFCs.

3.     EVALUATION OF THE MONTREAL PROTOCOL

       3.1 Potential Future Clx Levels

       By agreeing to and implementing the Montreal Protocol, the nations of

the world are altering the future trajectory of Clx levels.  Exhibit 8

presents a graph of changes in Clx for three scenarios of emissions:  No

         IT          1 *}
Controls, L Protocol, z and a True Global Freeze.  The No Controls scenario

shows large increases in Clx by 2100.  The Protocol (under standard

participation and growth assumptions) and True Global Freeze scenarios show

approximately the same Clx increases  (about 6.7 to 7.6 ppbv by 2100).    The

True Global Freeze scenario assumes that the use of all the chlorine

containing compounds (including HCFC-22 and methyl chloroform) is frozen at

1986 levels starting in 1990, and that 100 percent participation is achieved

worldwide.  An alternative formulation of the Protocol, in which methyl

chloroform is also assumed to be frozen at 1986 levels, shows less of an

increase in Clx over the long term.

       Note that even by 2100 the Clx values in the Protocol and True Global

Freeze scenario have not stabilized.  Despite having constant emissions for
     H As described above, the No Controls scenario assumes average annual
growth in use of 2.8 percent from 1985 to 2050 and no growth thereafter.

     12 The Montreal Protocol calls for a limit on the use of CFC-11, -12,
 113, -114 and  115 at 1986 levels starting in 1989, a 20 percent reduction
from 1986 levels in 1993, and a 50 percent reduction from 1986 levels in 1998.
It also calls for a limit on halon use at 1986 levels starting in 1992.

     13 The chlorine values are increases in Clx relative to current levels of
about 2.7 ppbv.  Total Clx levels in 2100 are simulated to be about 9.4 to
10.3 ppbv for these two scenarios.

     1^ Methyl chloroform may be frozen due to international agreement to
limit emissions or due to a lack of demand.  At least one reviewer associated
with a chemical manufacturer considered methyl chloroform growth to be unlikely

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                                      14-

 about 100  years  under  the True Global Freeze scenario, the Clx levels continue

 to  increase  slowly.  The compounds with the longest lifetimes (CFCs 11, 12,

 113,  114,  and 115;  CC14) have yet to achieve a steady-state level by this

 time,  whereas the  compounds with short lifetimes (HCFC-22, CH3CC13) have

 achieved a steady-state  level.  Although an increase  in Clx of about 6.7 ppbv

 is  achieved  for  this scenario by 2100, the eventual steady-state increase

 (which will  take hundreds of years to approach) is 9.9 ppbv, with CFC-11 and

 CFG-12 accounting  for  about 7.9 ppbv of the increase.15

        Exhibits  9  to 12  show the simulated increases  in Clx values  over time,

 the percent  of the increase in Clx associated with each compound, and  the

 equilibrium  increase in  Clx over 1985 values associated with  the final  level

 of  emissions simulated.  As shown in  Exhibit 9, CFCs  11,  12 and  113 account

 for most of  the  Clx increases over time in the No Controls  scenario (over  70

 percent).  CH3CC13 is  initially significant  (see the  year 2000), but declines

 over  time  in relative  importance while the importance of  CC14 increases.   The

 other  compounds  (CFCs  114 and 115 and HCFC-22) have a negligible relative

 contribution.

        Exhibit 10  shows  the contribution by  compound  for  the  Protocol

 scenario.  In this  scenario the importance of  the controlled  compounds

 decreases  over time, while the relative importance of CH3CC13  increases

 significantly, and the importance of HCFC-22 increases only slightly.  "
     15  For readers  familiar with  ozone-depletion estimates  from 1-D models,
Appendix C shows several  cases  of projected  depletion.   These cases  show
various emission scenarios  for  ozone-depleting  compounds as well  as  scenarios
for methane, carbon dioxide, and nitrous  oxide  concentrations.  These
projections of ozone  depletion  based on a 1-D model now  appear  to  be
inconsistent with monitored changes in ozone, thereby calling into question
the adequacy of these models for projecting  future changes in ozone.

     ^ Although CC14 is not controlled directly, CC14 emissions are assumed
to decline as the use of CFC-11 and CFC-12 declines because the primary source
of CC14 emissions is during the production of these CFCs.

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                                     -15-

Although  CH3CC13  is  relatively more  important  in  the  Protocol  scenario  as

compared  with  the No Controls scenario,  the actual Clx contribution  from the

compound  is  the same for  the two  cases;  the increased relative  importance  of

CH3CC13 in the Protocol scenario  is  due  to reductions in the contributions of

the other compounds.  As  shown in the exhibit, under  the Protocol assumptions,

the contribution  of  CH3CC13 to Clx levels  (e.g.,  about 35 percent in 2075)

could become more important than  the contribution of  CFC-11 or  CFC-12 (about

25 percent each in 2075).

       Exhibit 11 shows the relative contribution from each compound for the

True Global  Freeze scenario (in this scenario  the use of all the compounds is

frozen).  As shown in the  exhibit, CFCs  11, 12, and 113 grow in importance due

to their  relatively  long  lifetimes.  CH3CC13 and  HCFC-22, with  their short

lifetimes, become relatively less important.17  The other CFCs  (CFC-114 and

CFC-115)  make  relatively  little contribution despite  their long lifetimes

because of their  small levels of  emissions.

       Exhibit 12 shows the relative contribution across the compounds for the

Protocol  scenario with CH3CC13 frozen at 1986  levels  starting in 1989.  As

expected, the  relative contribution  of CH3CC13 is reduced significantly.

       It should be  emphasized that  neither HCFC-22 nor CH3CC13 grow faster in

the above analyses due to  the Protocol restrictions on CFC-11,  CFC-12, or CFC-

113.  This assumption is relaxed  below.
     17 Of note is that a key factor that will influence the future chlorine
contributions of the partially-halogenated compounds is the future level of
the OH radical in the troposphere.  The OH radical is primarily responsible
for the oxidation of the partially-halogenated compounds in the troposphere,
thereby keeping their lifetimes short and their chlorine contributions low.
The OH radical is itself influenced by many factors, including methane (CH4)
and carbon monoxide (CO) levels.  If CH4 and CO increase beyond levels now
contemplated, or if their effects on the OH radical are greater than now
believed, then the lifetimes of the partially-halogenated compounds (such as
CH3CC13) would increase and their contributions of chlorine to the
stratosphere would also increase.

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                                     -16-




        3.2 Impact of Participation Assumptions




        The importance of  the  international participation assumptions in the




 Protocol Clx estimates is assessed by evaluating alternative sets of




 participation assumptions,  listed in Exhibit 13.  In addition to the standard




 assumption of 94 percent  participation among non-U.S. developed nations and 65




 percent participation among developing nations, both higher  (up to  100




 percent) and lower (down  to 60  percent for developed nations and down to 40




 percent for developing nations)  participation scenarios are  examined.  The




 results are displayed in  Exhibit 14.




        As shown in Exhibit 14,  even with  100 percent global  participation




 (Participation Scenario D), the Protocol  requirements do not maintain Clx




 levels  at their 1985 values.  Assuming that CH3CC13 does not grow  (Scenario




 D'),  Clx increases by nearly  4  ppbv by 2100  (with 100 percent participation)




 which is approximately 2  ppbv less than Scenario D.  Exhibit 15  shows that




 CH3CC13 accounts for nearly 40  percent of the  increase  in  Clx by 2100 under




 the Scenario D assumptions.  The scenarios with lower participation rates show




 larger  increases in Clx.




        3.3 Impact of Substitution Assumptions




        In the previous sections it is assumed  that  as the  Protocol




 requirements are implemented  and CFC and  halon  use  is reduced, demand for




 other ozone-depleting compounds is not affected.  In fact, other ozone-




 depleting  compounds  (HCFC-22  and CH3CC13  for example) will be substituted for




 the controlled CFCs.   These other compounds could, therefore, contribute to




 increasing levels  of  Clx  over time.




       To evaluate the potential contributions of Clx from these substitute




compounds, five  scenarios were analyzed in which a range of assumptions  about




the quantity of  substitutions was examined.   Furthermore,  it  was  assumed that

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                                      17-

 th e  substituted compounds  have  the  same  atmospheric  characteristics  as  HCFC-

 22,  or  about  1/20  the  depletion potential  of  CFC-11.^

  The five  substitution  scenarios are as follows:

        o    1:1  --  Add  one  kilogram  of the  chemical substitute  for  each
            kilogram  of CFC-11 and CFC-12 reduced;

        o    1:2  --  Add  one  kilogram  of the  chemical substitute  for  each  two
            kilograms of  CFC-11  and  CFC-12  reduced;

        o    1:5  --  Add  one  kilogram  of the  chemical substitute  for  each  five
            kilograms of  CFC-11  and  CFC-12  reduced;

        o    1:10 -- Add one kilogram of the chemical  substitute for each 10
            kilograms of  CFC-11  and  CFC-12  reduced; and

        o    1:1*-- Add one kilogram of the chemical  substitute for each
            kilogram  of CFC-11,  CFC-12, CFC-113, CFC-114 and CFC-115  reduced.

 Exhibit 16  displays  the  results of  these five scenarios, along with  the

 standard  assumption  of no  substitution (i.e., the Protocol scenario).

        As shown in Exhibit 16,  substitution results  in increased Clx levels.

 The  1:1 and 1:1* substitutions,  which must be considered as unrealistically

 high due  to the numerous opportunities for reducing  CFC use without using

 ozone-depleting compounds  as substitutes,   results  in an increase in Clx of

 about 3 ppbv  over  the  standard  assumption by  2100.   The 1:2 substitution

 assumption, a more realistic worst  case,  results in  an increase on the order
     •^ Other partially-halogenated chlorine containing compounds under
consideration as substitutes include:  HCFC-142b;  HCFC-123; HCFC-141b; and
HCFC-124.  Each of these compounds has an ozone depletion potential of the
same magnitude as HCFC-22. In addition, compounds containing no chlorine are
being considered as substitutes, such as HFC-134a.  To the extent that any of
the widely-used partially-halogenated substitutes have significantly different
characteristics than HCFC-22, additional analyses may be required to assess
their implications for chlorine levels.

     19 EPA (1988) describes a series of control options for reducing CFC use.
Major control options that do not include ozone-depleting chemicals include:
product substitutes for many foam-blowing applications; non-chlorinated
chemical substitutes in solvent applications; recycling of used CFCs in
refrigeration and air conditioning applications; and HFC-134a as a chemical
substitute in refrigeration and air conditioning applications.

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                                      18-

 of 1.0 ppbv by 2100.   The  more  likely  scenarios of  1:5 and  1:10  indicate  less

 of an increase in Clx,  with 1:5 producing  an  increase of an additional  0.4

 ppbv by 2100.20

        3.4 Impact of Post-2050  Growth  Assumptions

        The above analyses  assumes  that the use of all the analyzed  compounds

 levels out in 2050.   In fact, assuming that the world's population  and  economy

 continue to grow beyond 2050 may imply continued growth in  the demand for

 products and services that would use these compounds if available.   Exhibit 17

 displays simulated Clx levels for  the  No Controls and Protocol cases under the

 standard assumption of no  growth following 2050, and under  an alternative

 assumption of continued 2.5 percent annual growth following 2050.   In the

 Protocol Post-2050 Growth  case,  continued  growth occurs among non-

 participants and for  non-controlled compounds.

        As shown in the exhibit,  continued  growth results in substantially

 higher Clx levels.   In particular, one sees in the  exhibit  that  the modest

 extent of leveling out of  Clx that occurs  in  the long run in the Protocol case

 is  in  fact driven by  the assumption of no  growth in demand  following 2050.

 When this  assumption  is relaxed,  it appears as though the Protocol  would  allow

 higher long term Clx  increases.

        3.5 Potential  Future Halon  Levels

        Exhibit  18  presents estimates of potential future halon levels for the

No Controls  and Protocol scenarios.  Although Halon 1301 emissions  are  modeled

to be  less  than the Halon  1211  emissions (see Appendix B),  the Halon 1301
     f\ r\
     zu Analysis in EPA  (1988) indicates that the potential for substitution
of ozone-depleting compounds for CFC-11 and CFC-12 is relatively small, on the
order of 1:5 or 1:10.  Because HFC-134a (which may substitute for CFC-12) does
not have any ozone-depleting chlorine, a 1:1 ratio of substitution with
chlorine-bearing compounds is very unlikely even if there were no other
control options and even if future use of substitutes were not moderated due
to increased costs relative to currently-used CFCs.

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                                     -19-

concentrations are higher due to the compound's longer atmospheric lifetime.

The potential role of halons in ozone depletion remains somewhat uncertain.

Based on analyses by Connell (1986) with a 1-D model, the following general

rules of thumb describe the ozone-depleting potential of the compounds:

       o   based on atmospheric concentrations, 20 pptv of Halon 1211 is as
           effective at depleting stratospheric ozone as is 40 pptv of Halon-
           1301;21 and

       o   at moderate levels of Clx abundance (e.g., on the order of 10
           ppbv),  20 pptv of Halon 1211 is about as effective as 1 ppbv of Clx
           at depleting stratospheric ozone.

Based on these rough rules of thumb, the combined halon concentrations in 2100

in the No Controls scenario shown in Exhibit 18 may result in about the same

level of ozone depletion as 3 ppbv of Clx.  This assessment is very rough,  but

is provided to put the impact of halons on ozone into context.

       Due to the long atmospheric lifetime of Halon 1301, the freeze in use

required under the Protocol is not sufficient to stabilize its atmospheric

concentration.  The fact that Halon 1301 is simulated to be stored in fire

extinguishing systems which will result in emissions for many years also

contributes to the continued increase in atmospheric concentrations shown in

Exhibit 18.

       Exhibit 18 also shows estimates for Halon 1211.  Because Halon 1211 has

a relatively short atmospheric lifetime, and because Halon 1211 fire

extinguishers are simulated to have shorter lives, the abundance of Halon 1211
     21 Although on a concentration basis  (i.e., in terms of ppbv) Halon 1211
is more potent  than Halon  1301 at depleting ozone, on a mass basis (i.e., in
terms of millions of kilograms of emissions) the reverse is true.  The
increased potency of Halon 1301 relative to Halon 1211 on a mass basis is due
to the compound's longer lifetime which results in substantially higher
concentrations  for equivalent levels of emissions.

     22 The relationship between Clx and ozone depletion varies depending on
the Clx abundance and the  concentrations of other trace gases  (C02, N20, and
/-ill/. \
CH4).

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                                      -20-

 flattens out in response to the Protocol requirements.   Despite these

 characteristics, the Protocol requirements do not reduce the abundance of

 Halon 1211 to its 1985 levels over the next 50 years.

 4.     REDUCTION SCENARIOS TO STABILIZE Clx AND HALON LEVELS

        4.1 Identification of Necessary Reductions

        Scenarios more stringent than the Protocol would be needed to stabilize

 Clx and halon abundances at 1985 levels.  Several scenarios were examined to

 evaluate what controls would be needed.  First, the Protocol reduction of 50

 percent (a freeze for halons) was replaced with a reduction of 90 percent, and

 the timing of the reduction was moved from 1998 (1992 for halons) to 1990.  As

 shown in Exhibit 19, under the standard Protocol participation assumptions,

 this scenario results in over a 4 ppbv increase in Clx by 2100.  If the global

 participation in the reduction is increased to 100 percent, the Clx increment

 is held to about 2 ppbv by 2100, and is no longer increasing at that time.  If

 the reduction was increased to 100 percent (i.e., full phase out of the fully-

 halogenated CFCs by 1990) with 100 percent participation, the increment in the

 Clx level  would be limited to about 1.5 ppbv and would be declining by 2100.

 As shown in Exhibit 20,  CH3CC13 is the primary compound contributing to the

 increases  in the Clx levels relative to the 1985 value in this 100 percent

 Reduction  scenario.
     *-° Also  shown in Exhibit 20 are negative contributions to Clx increases
from several  compounds.   The  negative values indicate that although overall
Clx levels  increased  relative to 1985 values,  the Clx associated with those
compounds decreased.   For example,  in Exhibit 20  the  contribution from CC14 is
shown as negative.  This  occurs  because  the  simulated emissions  are less  than
the level necessary to keep the  CC14 contribution to  Clx constant at  its  1985
level,  and  the change  in  Clx  associated  with CC14 is  consequently negative.
This negative change  for  Clx  (associated with  CC14) divided by the  positive
overall change in  Clx  across  all  the compounds results in a negative
contribution for CC14  being reported in  the  exhibit.

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                                     -21

       Because the investigations above indicate that CH3CC13 may become an

important relative contributor to Clx levels in the future (and because some

industrial reviewers indicated that they beleived that the demand for CH3CC13

may not grow), a scenario of freezing this compound at 1986 levels in 1990 was

investigated.  Exhibit 21 shows the simulated increases in Clx associated with

the 100 percent reduction in the fully-halogenated CFCs along with the freeze

in CH3CC13.  The increase in Clx is limited to under 1.5 ppbv assuming

participation similar to the participation used to model the Protocol.  If 100

percent participation is assumed, Clx levels are simulated to decrease by 2100

by about 0.6 ppbv.   By that time, the contribution of chlorine from all

compounds is  less  than the loss rate from stratosphere.  In this scenario, the

Clx associated with  all the compounds except CH3CC13 (which is frozen) and

HCFC-22  (which is  not controlled) is simulated to decline.  Unlike the other

scenarios examined,  this scenario, which includes a freeze on CH3CC13 (but

does not include potential HCFC substitutes), stabilizes or reduces Clx

abundances.

       4.2 Impact  of Substitution and Post-2050 Growth.Assumptions on
           Stabilization

       The long term outlook for Clx levels is influenced by the substitution

of ozone-depleting compounds for controlled compounds and by the assumption

that baseline compound use does not grow after 2050.  Exhibit 22 shows the

implications of assuming that the baseline demand for products and services

that would use CFCs  continues to grow at 2.5 percent per year from 2050 to

2100.^  The top two lines show the case of a 100 percent reduction in fully-

halogenated CFCs and a freeze on CH3CC13,  assuming the participation rates
     24- Under these baseline assumptions, compound use grows by 2.5 percent
per year after 2050.  As described above, non-participants' use of controlled
substances is reduced relative to these baseline assumptions when use limits
are simulated.

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                                     -22-




 used for the standard Protocol  evaluation.  In  this case  the  assumption  of




 continued growth after 2050  results  in  simulated  increases  in Clx  levels of




 about 2.4 ppbv by 2100 instead  of  1.5 ppbv.




        The bottom two lines  on  the exhibit show the case  of 100 percent




 reduction in the fully-halogenated CFCs, a freeze on CH3CC13, with 100 percent




 global participation.   In this  case  the  assumption of continued growth in use




 after 2050 results in the Clx levels rebounding so that by  2100 the levels  are




 increasing,  although the  levels remain below the  1985 simulated values.




        Exhibit 23 displays simulated levels of  Clx assuming that one kilogram




 of a substitute compound  is  used for each two or  five kilograms of CFC-11 and




 CFC-12 that are foregone.  As above, it  is assumed that the substitute has  the




 atmospheric  characteristics  of  HCFC-22  (i.e., about 1/20  the  depleting




 potential of CFC-11).   The substitutions result in modest increases in the




 simulated Clx values.   In the 100  percent global  participation scenario,  the




 1:5  substitution results  in  an  increase  in simulated Clx  levels of about 0.4




 ppbv by  2100 relative  to  the no-substitute scenario.




       Exhibit 24 displays the  implications of  having both  continued growth




 after 2050 and the use of chlorine-bearing substitute compounds.   As above, a




 substitute with the atmospheric characteristics of HCFC-22  is assumed for two




 levels of substitution.   Also,  growth after 2050  continues  at 2.5  percent per




year.  As shown in the exhibit,  the  combined effect of substitution and




continued growth  could result in increased chlorine levels  even under




stringent restrictions.   Exhibit 24  may present the restrictions most likely




to be necessary to  stabilize Clx at  current levels:  a phaseout of the fully-




halogenated  compounds;  a  freeze  in CH3CC13 use  at current levels;   and




conservative use  (e.g., about 1:5  substitution) of partially-halogenated

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                                     -23-

replacement compounds.-"  of note is that even this conservative rate of

substitution (1:5) allows for significant increases in the use of HCFC-22-like

compounds in the future.  The 1:5 substitution assumption allows for nearly

4.0 percent annual growth of these compounds through 2100, or nearly and 80-

fold increase over current levels.

       4.3 Potential Future Halon Levels

       Similarly large  reductions in use are required to stabilize halon

abundances.  Exhibit 25 displays estimates of Halon 1301 for 90 percent and

100 percent reductions.  Even with 100 percent reduction in use by 1990,

levels are simulated to remain above current values through 2100.  Of note,

however, is that this analysis does not assume significant recovery of Halon

1301 in existing systems.  If these amounts were substantially recovered (and

not emitted) Halon 1301 levels could decline.

       Exhibit  26 displays similar estimates for Halon 1211.  Because Halon

1211 has a relatively short atmospheric lifetime,  its atmospheric levels

respond quickly to reduced emissions.  As in the analysis of Halon 1301,

increased recovery activity is not presumed.

5.     IMPLICATIONS OF  A VIRTUAL PHASEOUT OF CFCs  FOR CHLORINE LEVELS

       The previous sections have examined the potential future  levels of

stratospheric chlorine  that may be associated with the Montreal  Protocol and

the emissions reductions required in 1990 in order to stabilize  chlorine

levels at current values.  This section assesses the implications of virtual

phaseouts of CFC compounds that could be achieved  within the Protocol

framework and time frame.  Unlike the previous section which evaluated  large

reductions starting in  1990, this section builds upon the current Protocol
     25 The conservative  use  of  the  substitutes could be achieved by:
agreements to  limit use;  the  use of  efficacious containment technologies;
and/or the use of non-chlorine-containing compounds and technologies  as  substitutes

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                                     -24-

 schedule of reductions.   The implications  of  requiring  deeper  reductions  in

 1998 is examined,  followed by an evaluation of  the  effects  of  speeding up or

 delaying the required reductions.

        5.1  Virtual Phaseouts in 1998

        The following factors were  varied in examining the implications of

 virtual phaseouts:

        o   Stringency of the phaseout:   90 percent; 95  percent;  97 percent;
            and 100 percent.

        o   Participation:   standard participation assumptions^"  and  100
            percent global  participation.

        o   Methyl  chloroform growth:  methyl  chloroform use and  emissions grow
            in the  future and methyl chloroform  use  is frozen at  1986  levels
            either  due to international  agreement or due to  a lack of  demand.

        o   Substitution:   ozone-depleting  substitutes for foregone CFCs were
            assumed to range from no substitutes to  one  kilogram  for  each  two
            kilograms of  CFC-11 and CFG-12  foregone.

        o   Long Term Growth.   Compound  use was  assumed  to have no growth
            following 2050  and was  assumed  to  have continued growth at 2.5
            percent per year following 2050.

 While  varying these factors,  the basic  structure of the phased Protocol

 reductions was maintained.   The 50 percent reduction required  in 1998 was

 replaced with the  more stringent reductions of  90,  95,  97,  and 100 percent.

 The  special allowances for developing nations and nations with planned

 expansions of production were also maintained.

        Exhibit 27  displays  the estimated chlorine values for the four

 stringency levels  assuming  standard (i.e., less than 100 percent)

participation and  growth in  CH3CC13.  As shown  in the exhibit, even with  these

stringent  phaseouts,  chlorine  levels may increase on the order of 4 ppbv  to  5

ppbv by 2100.   Exhibit 28 shows  that 100 percent participation in such
     ^"  Standard participation assumptions are:  U.S participation; 94
percent participation among other developed nations including the USSR and
East Bloc nations; and 65 percent participation among developing nations.

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                                     -25-

phaseouts would reduce the size of the increases in chlorine by about 2 ppbv

by 2100.  Even with 100 percent participation, however, the chlorine levels

increase from current values.

       Exhibit 29 displays the estimated chlorine levels for the case when

CH3CC13 is assumed to be frozen at 1986 levels starting in 1989.  When

compared to Exhibit 28, this exhibit shows that the continued growth in

CH3CC13 contributed to the continued increase in chlorine relative to current

levels over the long term.  By virtually phasing out the CFCs and freezing

CH3CC13 at 1986 levels, chlorine  increases are kept below 1 ppbv by 2100.

       These results, however, do not  include two factors that may increase

future chlorine levels.  As discussed  in the previous  sections, ozone -

depleting compounds may be substituted for foregone CFCs.  Exhibit 30 shows

that  "one-for-two" substitution may increase the estimated chlorine levels

         0 7
somewhat.z'  Similarly, Exhibit 31 shows the implications of both substitution

                                                    9 Q
and continued growth in compound  use following 2050.^  Even with 100 percent

global compliance, the assumptions of  continued growth and "one-for-two"

compound substitution combine to  result in estimated chlorine increases by

2100  for the four stringency levels.

       Of interest is that a tradeoff  between stringency and substitution

exists.  For example, Exhibit 32  shows that the 90 percent reduction with one-

to-five substitution yields approximately the same chlorine increases as a 100

percent reduction with a one-to-three  or one-to-2.5 substitution.  The
     27  As discussed  in previous sections, the substitute is assumed to have
the atmospheric characteristics of HCFC-22.  Also, "one-for-two" substitution
is considered to be an upper bound for likely future substitution.

     28  Assuming 100  percent compliance, the continued growth after 2050
affects only the use of HCFC-22 (which is not controlled) and the level of
substitutes used.  Continued growth after 2050 results in larger amounts of
substitutes being used after 2050.

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                                     -26-



 implication  of  this  tradeoff is that increasing the stringency of the phaseout



 from  90 percent to 100 percent would allow the use of HCFC-22-like substitutes




 to  be approximately  doubled.  In other words, by giving up about 125 million



 kilograms  of CFCs 11, 12  and 113 annually, an additional 235 million kilograms



 of  substitutes  could be used in the year 2000 without increasing Clx levels.



 By  the year  2050 an  additional 870 million kilograms of substitutes could be




 used  annually without increasing Clx levels.



       This  analysis indicates that within the Protocol framework, increases



 in  chlorine  levels can be kept to relatively low levels if the following is



 achieved:  almost 100 percent participation; no future growth in CH3CC13



 emissions; low  rate  of substitution of other ozone-depleting compounds  (i.e.,


           9 Q
 the HCFCs);   and movement out of all fully-halogenated ozone-depleting



 compounds  over  the long term in order to prevent long term growth in demand.



       5.2  Speeding up or Delaying the Phaseout



       The timing of the  phaseout will influence the trajectory of chlorine



 levels over  time.  Delays will allow additional emissions to increase chlorine




 levels.  The increased levels will persist over time, increasing the risk of



 ozone depletion.




       To  assess the implications of changing the  timing of the phaseout a 100




percent phaseout with 100 percent participation and a CH3CC13 freeze was




examined starting in six  different years:  1990; 1993; 1996; 1998; 2003; and




2008.   The general Protocol framework was maintained.  As shown in Exhibit 33,



the estimated chlorine levels for the six cases vary significantly by 2015.



The differences  among the cases persist for decades.  In fact, delaying a full
     29  As discussed above, even the low rate of substitution allows for

significant increases in the use of these substitutes.

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                                     -27-




phaseout from 1998 to 2008 increases the maximum chlorine level by about 0.7




ppbv and delays the decline back to 1985 levels by about 70 years.




       Because the differences among the cases persist for many years, the




differences in the cumulative amount of chlorine contributed over time is a




useful measure for evaluating the implications of the alternative timings.




Exhibit 34 shows the differences in the cumulative amount of chlorine increase




estimated for 1985 to 2100, relative to a timing of 1998.  As shown, moving




the phaseout up to 1990 reduces the cumulative contribution by over 11.5 ppbv.




Delaying the phaseout to 2008 increases the cumulative contribution by over




about 12.5 ppbv.  Over this range the chlorine response is approximately




linear to changes in the timing of the phaseout.




       Of note is that the general magnitude of the effect of timing on the




cumulative chlorine contribution is not overly sensitive to assumptions about




CH3CC13 growth or participation.  Increasing participation tends to increase




the importance of the timing of the phaseout.




6.     SUMMARY




       Very large increases in Clx and halon abundances would have been




expected if the use and emissions of chlorine-containing compounds and halons




had been allowed to increase without limit.  The provisions of the Montreal




Protocol will reduce the amount of the increase significantly, but will not




keep the levels of Clx and halons in the stratosphere from increasing.




Significant additional reductions in emissions are required to keep the levels




from increasing, possibly including a complete phaseout of the fully-




halogenated compounds and a freeze on methyl chloroform.  The rate of




substitution with partially-halogenated chlorine-containing compounds will




also influence future chlorine levels.  If substitution is limited to key




uses,  and if emissions are contained, the impact of these substitutes on

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                                     -28-




future chlorine levels would be relatively small.   The timing of a phaseout




affects both the magnitude of the Clx increase and the time required for Clx




levels to decline back to 1985 values.

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EXHIBITS

-------
EXHIBITS

-------
                                      -29-

                                   EXHIBIT 1

                 CONCEPTUAL DIAGRAM OF THE CONCENTRATION MODEL
           Stratosphere
           Tropopause
•• ••
•  ••
  •
                Released Atomic Chlorine

                Stratospheric Concentrations of the Molecules



                Troposphere-Stratosphere Exchange



•   ••  •«   •   Tropospheric Concentrations of the Molecules
           Troposphere
                                       Alternative Emissions Scenarios
          Earth's Surface
The concentrations model is based on results from a one-dimensional model of
the atmosphere.   As a one-dimensional analysis, the analysis  reflects vertical
transport  only;  latitudinal and  longitudinal dependent effects are not
considered.

The analysis  begins with alternative emissions scenarios  based on a variety of
assumptions.   The emissions are  translated into tropospheric  concentrations of
the compounds.   The tropospheric concentrations in any year are a function of
additions  (due to emissions)  and losses (due to transport to  the
stratosphere).   The transport to the stratosphere is modeled using an
exponential  time constant of  3.5 years.  This  implies that 3.5 years after an
emission takes place, about 63 percent of it has reached  the  stratosphere.

In the  stratosphere the molecules are broken down by solar radiation and
release chlorine.  The stratospheric concentrations of the molecules are
adjusted for  the relative amounts of ozone-depleting chlorine atoms supplied
to the  stratosphere.

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                                -30-

                             EXHIBIT 2

             COMPOUND LIFETIMES AND CONVERSION FACTORS

       Compound               Lifetime3           Conversion Factorb
CFC-11
CFC-12
CFC-113
CFC-114
CFC-115
HCFC-22
CH3CC13
CC14
Halon 1211
Halon 1301
76
138
91
185
380
22
8
67
12
100
.5
.8
.7
.0
.0
.0
.3
.1
.9
.9
years
years
years
years
years
years
years
years
years
years
1
0
0
0
0
0
1
1
3
3
.363
.761
.945
.372
.102
.285
.466
.709
.31
.68
X
X
X
X
X
X
X
X
X
X
10
10
10
10
10
10
10
10
10
10
-4
-4
-4
-4
-4
-4
-4
-4
-2
-2
     The lifetimes indicate how long the chlorine associated with the
     compounds will remain in the atmosphere.   The lifetimes are "e-
     folding" lifetimes, meaning that after the period of one lifetime
     has elapsed, the remaining level in the atmosphere is 1/e or about
     37 percent of the original value.

     For the compounds other than the halons,  the conversion factors
     convert millions of kilograms of emissions into ppbv of Clx, and
     adjust for the relative efficiencies of the various compounds in
     supplying ozone-depleting chlorine to the stratosphere.  The
     conversion factors for halons convert millions of kilograms of
     emissions into atmospheric abundances in pptv for each compound.
Source:  Connell (1986).

-------
                                      31-
                                  EXHIBIT 3
                     SIMULATED 1985 Clx AND HALON LEVELS
1985 Anthropogenic Clx Levels (ppbv)'


Compound
CFC-
CFC-
CFC-
CFC-
CFC-
HCFC
11
12
113
114
115
-22
CH3CC13
CC14



IAMb
0.
0.
0.
0.
<0.
0.
0.
0.
68
63
10
01
01
01
57
67
Connell/
Wuebbles0
0.
0.
0.
NR
NR
0.
0.
0.
63
76
10


04
41
65

WMOd
0.
0.
0.
NR
<0.
0.
0.
0.
6
64
11

01
05
4
64
Stabilizing Estimated
Emissions 1985 Emissions
(106
67
61
1
1
<0
22
575
60
.2
.1
.5
.0
.1
.0
.0
.9
kg)e
(76%)
(83%)
(99%)
(93%)
(98%)
(69%)
(29%)
(30%)
(106 kg)
278
364
150
14
5
74
813f
87
TOTAL
2.68
2.59
NR
1985 HALON Levels  (pptv)
Compound
Connell/
IAM Wuebbles
Stabilizing
Emissions
WHO (106 kg)e
Estimated
1985 Emissions
(106 kg)
Halon 1211
rtalon 1301
0.20
0.40
0.0
0.0
1.2
1.0
0.5
0.1
(64%)
(95%)
1.4
2.0
NR = Not reported
a    Anthropogenic sources only.  Does not include natural chlorine from
     CH3C1.
b    Current values of chlorine exceed the 1985 values.
c    Computed by multiplying the surface mole fraction by the number of atoms
     per molecule.
d    Values reported here computed by multiplying compound abundance values
     reported in WMO (1986) by the number of chlorine atoms in the compound
     molecule.
e    "Stabilizing emissions" is the level of emissions that is estimated to
     result in constant Clx (or halon) levels at the IAM-simulated values.
     Estimates based on data developed in Connell (1986).  Values in
     parentheses are percent reductions from 1985 emissions.
f    Estimated 1985 production.  Annual CH3CC13 production has varied
     significantly from year-to-year.   Estimated 1986 production is
     approximately 600 million kilograms.

Sources:  Connell and Wuebbles (1986), WMO (1986).

-------
                                        -32-

                                     EXHIBIT 4

              SIMULATED CHLORINE  CONTRIBUTION FROM CFC-11 AND CFC-12
          FROM HYPOTHETICAL CONSTANT EMISSIONS OF 300 MILLION KG PER YEAR
Parts Per Billion
         2.5
         1.5
        0.5
               1    10   20    30    40    50   60   70   80   90   100   110   120
  Chlorine  contributions over time computed based on  the  lifetimes and
  conversion  factors  presented in Exhibit 2 and the model  described in Appendix
  A.

-------
                                       33-

                                    EXHIBIT 5

            SIMULATED CHLORINE CONTRIBUTIONS FROM CFC-11 AND CFC-12
       FROM HYPOTHETICAL ONE-YEAR OF EMISSIONS  OF 300 MILLION KILOGRAMS
Parts Per Billion
         0.04
         0.03
         0.02
         0.01
                                                    I     I      I     I     I     I
                1    10    20    30    40   50   60   70    80    90    100   110   120
  Chlorine contributions  over  time computed based on the lifetimes  and
  conversion factors presented in Exhibit 2 and the model described in Appendix
  A.

-------
                                          -34-

                                       EXHIBIT 6

            RELATIVE CHLORINE CONTRIBUTION OVER TIME FROM EACH COMPOUND FOR
               HYPOTHETICAL ONE-YEAR EMISSIONS OF 300 MILLION KILOGRAMS

                  (Values are relative to CFC-11  which is set to  1.0)
Chlorine Contributor)
Relative to CFC-11    1.4
(CFC-11 = 1.0)
                 1.2  —
                  1   —
                 0.8   -
                0.6
                0.4   —
                0.2   -
                        1    10    20   30   40    50    60   70    80    90    100   110  120
   Chlorine  contributions over  time  computed based on  the  lifetimes and
   conversion factors presented in Exhibit 2 and the model described in Appendix

-------
                                         -35-

                                      EXHIBIT 7

            RELATIVE GREENHOUSE IMPACTS OVER TIME FROM EACH COMPOUND FOR
              HYPOTHETICAL ONE-YEAR EMISSIONS OF 300 MILLION KILOGRAMS

                 (Values are relative to CFG-11 which is  set  to  1.0)
Direct Radiative
Forcing Relative
toCFC-11
               3   —
               2   —
               1   —
                                                              80
90
100  110   120
    Relative greenhouse impacts are computed based on the  "direct  radiative
    forcing" provided by the compounds.  This value is a function  of  the  extent to
    which the compounds absorb certain wavelengths of light and  the atmospheric
    abundances of the compounds.   The absorption characteristics are  based on
    analysis in EPA (1987) for CFC-11, CFC-12, HCFC-22, CH3CC13, CC14 and Halon
    1301.   Estimates for CFCs 113, 114, and 115 are based  on  the assumption  that
    the  parameters are the average of the values for CFC-11 and  CFC-12.

-------
                                     -36-

                                   EXHIBIT  8

                          SIMULATED INCREASES  IN Clx:
                NO  CONFROLS;  PROTOCOL;  AND TRUE GLOBAL FREEZE
      m
      cc
      LU
      Q_
      IT
      Q-
            40.0
            35.0-
           30.0 -
           25.0-
20.0 -
                                                   Protocol with CH3CCI3 Freeze
15.0-
             1985
                       2005
                                2025
                                         2045
                                                   2065
Assumptions:

No Controls:    Compound use  grows  at an average annual rate of 2.8 percent
                from  1985 to  2050,  with no growth thereafter.

Protocol:       U.S.  participation;  94 percent participation in other
                developed nations;  65 percent participation in developing
                nations.   Use of compounds not covered by the Protocol grows
                at  the  rates  in the No Controls scenario.  Growth rates among
                non-participants are reduced to 37.5 percent (developed
                nations)  and  50 percent (developing nations) of their baseline
                values.   Steady state increase in Clx is 10.2 ppbv.

True Global Freeze:   The use  of all chlorine-containing compounds is frozen  at
                1986  levels  starting in 1990, and 100 percent participation  is
                achieved worldwide.   Steady state increase in Clx is 9.9 ppbv.

Protocol with CH3CC13 Freeze:   Same as Protocol assumptions, plus a freeze on
                CH3CC13  use  starting in 1989.  Steady state  increase in Clx  is
                8.0 ppbv.
Baseline Compound  use  is  assumed to be constant after 2050.

-------
                                       37-

                                   EXHIBIT 9

                   RELATIVE CONTRIBUTION OF THE  COMPOUNDS TO
                    INCREASES IN Clx:  NO CONTROLS  SCENARIO
              PERCENT OF Clx

               120
                         2000
                   2025
2050
2075
2100
Change in
Clx (ppb):
1.5
6.8
16.3
28.5
37.8
              Steady State Increase in Clx (ppbv): 71.5
Assumptions:

No Controls:
Compound use grows  at  an average annual rate of  2.8  percent
from 1985 to 2050,  with no growth thereafter.

-------
                                      38-

                                  EXHIBIT 10

                  RELATIVE CONTRIBUTION  OF THE COMPOUNDS TO
                     INCREASES IN Clx:  PROTOCOL SCENARIO
             PERCENT OF Clx

              120
                        2000
                   2025
2050
2075
2100
Change in
Clx (ppb):
1.2
3.2
5.2
6.8
7.6
              Steady State Increase in Clx (ppbv): 10.2
Assumptions:

Protocol:
U.S. participation; 94 percent  participation in other
developed nations; 65 percent participation in developing
nations.  Use of compounds not  covered by the Protocol grows
at the rates in the No Controls scenario.   Growth rates among
non-participants are reduced.   Baseline compound use is
assumed to be constant after 2050.

-------
                                       39-

                                   EXHIBIT 11

                   RELATIVE  CONTRIBUTION OF THE COMPOUNDS TO
                     INCREASES  IN Clx:   TRUE GLOBAL FREEZE
              PERCENT OF Clx
               120
LZJ CFC-114
                         2000
               2025
2050
2075
2100
Change in
Clx (ppb):
1.0
3.1
4.6
5.8
6.7
               Steady State Increase in Clx (ppbv): 9.9
Assumptions:

True  Global Freeze:
The use of all chlorine-containing compounds is frozen  at
1986 levels starting  in  1990,  and 100 percent
participation is achieved worldwide.

-------
                                     -40-

                                  EXHIBIT 12

                  RELATIVE CONTRIBUTION OF THE COMPOUNDS  TO
                INCREASE IN Clx:   PROTOCOL WITH CH3CC13 FREEZE
           PERCENT OF Clx
             120
                      2000
2025
2050
2075
2100
Change in
Clx(ppb): 1 1
2.6
3.7
4.7
5.5
             Steady State Increase in Clx (ppbv): 8.0
Assumptions:

Protocol with CH3CC13 Freeze:  U.S.  participation;  94 percent participation in
                other developed  nations;  65  percent participation in
                developing nations.   Use  of  compounds not covered by the
                Protocol grows at  the rates  in the  No Controls scenario.
                Growth rates among non-participants are reduced.   Baseline
                compound use is  assumed to be  constant after 2050.

-------
                                     -41

                                     EXHIBIT 13

               RANGE OF PROTOCOL PARTICIPATION ASSUMPTIONS EXAMINED3
Participation
  Scenario	Developed Nations   Developing Nations
                                     Comments
                           94%
                   65%
               Standard Assumptions
      D
                          100%
                          100%
100%
                          100%
                   65%
                   85%
100%
                  100%
Higher than standard
 assumptions

Higher than standard
 assumptions

Higher than standard
 assumptions

Higher than standard
 assumptions
      H
                           94%
                           75%
                           60%
 75%
                           66%
                   40%
                   65%
                   65%
 40%
                   66%
Lower than standard
 assumptions

Lower than standard
 assumptions

Lower than standard
 assumptions

Lower than standard
 assumptions

Lower than standard
 assumptions
a Unless noted otherwise, 100% U.S. participation is assumed.

b Includes CH3CC13 freeze along with Protocol requirements.

c Assumes 66% global participation, including the U.S.

-------
                                          -42-

                                       EXHIBIT  14

                               SIMU1ATED INCREASES IN Clx
                  FOR ALTERNATIVE PROTOCOL PARTICIPATION ASSUMPTIONS
O
m
DC
LJJ
a.
tr
<
a.
    0.0 -f
      1985
                                                          I: 66% Participation
                                                          G
                                                          H
                                                          F
                                                          A: Standard Protocol
                                                          B
                                                          C
                                                          D: 100% Participation
                                                                          D':  100% Participation
                                                                           and CH3CCI3 Freeze
2005
2025
                      2045
                      2065
                                             2085
    Participation Scenario Definitions:
    Scenario
    Developed  Nations      Developing Nations
                                            Steady State
                                            Clx Increase3
A
B
C
D and D'
E
F
G
H
I
94%
100%
100%
100%
94%
75%
60%
75%
66%
65%
65%
85%
100%
40%
65%
65%
40%
66%
Standard Assumption
Higher Assumption
- Higher Assumption
Higher Assumption
Lower Assumption
Lower Assumption
- Lower Assumption
- Lower Assumption
- Lower Assumption
10.2
9.4
8.2
7.4 and 5.1
11.6
12.8
14.8
14.2
16.4
    a    Increase over current  level of about  2.7 ppbv.

    b    D'  includes a freeze on CH3CC13.

-------
                                        -43-

                                    EXHIBIT  15

                    RELATIVE  CONTRIBUTION OF THE COMPOUNDS  TO
           INCREASES  IN Clx:   PROTOCOL WITH 100%  GLOBAL PARTICIPATION
              PERCENT OF Clx
               120
                         2000
2025
2050
2075
2100
Change in
Clx (ppb):
1.2
2.9
4.5
5.7 6.1
               Steady State Increase in Clx (ppbv): 7.4
Baseline compound use is assumed  to  be  constant after 2050

-------
                                    -44-

                                 EXHIBIT 16

      SIMULATED INCREASES IN Clx:  ALTERNATIVE SUBSTITUTION ASSUMPTIONS
      z
      g
      3
      3
      &
      a
      a.
                                                                      1:5
                                                                      1:10
                                                                      Protocol
             1985
                      2005
                                2025
                                         2045
                                                  2065
                                                            2085
Scenario Definitions:
                    1:1  -- Add one kilogram of  the  substitute  for each
                    kilogram of CFC-11 and CFC-12 reduced;

                    1:2  -- Add one kilogram of  the  substitute  for each two
                    kilograms of CFC-11 and CFC-12  reduced;

                    1:5  -- Add one kilogram of  the  substitute  for each five
                    kilograms of CFC-11 and CFC-12  reduced;

                    1:10  -- Add one kilogram of the substitute for each 10
                    kilograms of CFC-11 and CFC-12  reduced;  and

                    1:1*  -- Add one kilogram of the substitute for each
                    kilogram of CFC-11, CFC-12,  CFC-113,  CFC-114 and CFC-115
                    reduced.
It is assumed that the substitute has  the  atmospheric  characteristics of HCFC-
22, or about 1/20 the ozone-depleting  potential  of CFC-11.   Baseline compound
use is assumed to be constant after  2050.

-------
                                      -45-


                                   EXHIBIT 17


             SIMULATED INCREASES IN Clx:   NO CONTROLS AND PROTOCOL

                 WITH ALTERNATIVE POST-2050  GROWTH ASSUMPTIONS
                   1985
                                 2025
                                         2045
                                                2065
                                                        2085
             Z
             O
                 0.0 H
                   1985
                          2005     2025     2045      2065     2085
Assumptions:
         o   Protocol Participation:  U.S.  participation; 94% of  other
             developed nations; 65%  of  developing nations.


         o   Baseline compound use grows  by 2.5 percent per year  after 2050

-------
                                          -46-


                                       EXHIBIT 18


                          SIMULATED INCREASE IN HALON  LEVELS:

                          NO CONTROLS  AND PROTOCOL SCENARIOS
§
W
OH



1
       70.0
       60.0
      50.0 -
      40.0 -
30.0
      20.0 -
      10.0 -
      0.0
                                                                 No Controls:
                                                                 Halon1301
                                                                          No Controls
                                                                          Halon1211
                                                                   Protocol: Halon 1211
                                                                       0—e—0
         1985
                2005
2025
2045
2065
                                                                         2085
   Assumptions:
            o  Protocol Participation:  U.S.  participation; 94%  of other
               developed nations; 65% of  developing nations.


            o  Baseline compound use is assumed to be constant after 2050.

-------
                                       -47-


                                    EXHIBIT 19


                           SIMULATED  INCREASES  IN Clx:
         PROTOCOL;  90% REDUCTION; 90% REDUCTION WITH 100% PARTICIPATION;

                      100% REDUCTION WITH 100% PARTICIPATION
W
P-,
on
H

5?
                                                         90% Reduction with
                                                         Less Than 100% Participation
                                         90% Reduction with
                                         100% Participation
                                        I	1	1	1	1	1	1
                                                               100% Reduction with
                                                               100% Participation
         1985
2005
2025
2045
2065
2085
 Assumptions:
           o  Participation  in Protocol and 90 percent reduction scenarios:
              U.S. participation;  94 percent of developed nations;  65 percent of
              developing nations.


           o  90 percent and 100  percent reductions are simulated in 1990.


           o  Baseline compound use is assumed to be constant  after 2050.

-------
                                      -48-

                                   EXHIBIT 20

                   RELATIVE CONTRIBUTION  OF  THE COMPOUNDS TO
           INCREASES IN Clx:  100% REDUCTION WITH 100% PARTICIPATION
I    I  CH3CCI3

|$$£j  CCI4

|    |  CFC-115

[""""I  CFC-114



t§^j  HCFC-22

      CFC-12

••  CFC-11
               PERCENT OF Clx

               200
               100


                50


                 0


               -50


               -100
                                                 n
                          2000
                                      2025
2050
2075
2100
Change in
Clx (ppb):
0.6
0.8
1.4
1.8
1.7
              Steady State Increase in Clx (ppbv):  0.7
Assumptions:
         o  100 percent reduction in the fully-halogenated CFCs is simulated
            in 1990,  with 100 percent global participation.

         o  Negative  contribution indicates reduced  levels of Clx associated
            with  those compounds.

         o  Baseline  compound use is assumed to be constant  after 2050.

-------
                                         -49-


                                      EXHIBIT 21


                             SIMULATED INCREASES  IN  Clx:
                    PROTOCOL;  100% REDUCTION WITH CH3CC13  FREEZE;
             100% REDUCTION WITH CH3CC13 FREEZE  AND 100%  PARTICIPATION
o
I—<

d
I-H
CQ


I
00
                                              100% Reduction with CH3CCI3 Freeze
                                              and Less Than 100% Participation
                 100% Reduction with CH3CCI3 Freeze
                 and 100% Participation
      -1.0
         1985
2005
2025
2045
2065
2085
  Assumptions:
            o   Protocol participation:   U.S.  participation; 94% of  developed
               nations; 65% of developing nations.


            o   100% reduction in the  fully-halogenated CFCs and the CH3CC13
               freeze are simulated in  1990.


            o   Baseline compound use  is  assumed to  be constant after 2050.

-------
                                        -50-

                                     EXHIBIT  22

     SIMULATED  INCREASES  IN Clx FOR ALTERNATIVE POST-2050 GROWTH ASSUMPTIONS:
                        100% REDUCTION WITH CH3CC13 FREEZE;
             100% REDUCTION WITH CH3CC13 FREEZE AND 100% PARTICIPATION
       3.0
§
03
a
on
H
                         Less Than 100% Participation
      -0.5 -
         1985
2005
2025
2045
2065
2085
   Two lines are displayed for each of the two cases.  One  line  for each is based
   on the assumption that baseline compound use stops growing  in 2050.   The
   second line assumes that baseline compound growth continues from 2050 to 2100
   at a rate of 2.5 percent per year.  As anticipated, higher  levels of Clx are
   simulated by 2100 when compound use continues to grow beyond  2050.

-------
                                        -51

                                     EXHIBIT 23

       SIMULATED  INCREASES IN Clx FOR ALTERNATIVE SUBSTITUTION ASSUMPTIONS:
                        100% REDUCTION WITH CH3CCL3  FREEZE;
             100% REDUCTION WITH CH3CC13 FREEZE AND  100%  PARTICIPATION
o
_1
_J
m
DC
LLJ
(X
(D
QC
CL
                      Less Than 100% Participation
       -0.5 -
          1985
2005
2025
2045
2065
2085
   Three lines are displayed for each of the  two cases.   One  line  is  based on the
   assumption that no ozone-depleting compounds are  substituted for the
   controlled compounds.  The other two lines are  for  a  range of substitution
   assumptions.   The substitute is assumed to have the atmospheric
   characteristics of HCFC-22.  Baseline compound  use  is assumed to be constant
   after 2050.

-------
                                        -52-

                                     EXHIBIT 24

                SIMULATED INCREASES IN Clx ASSUMING POST-2050 GROWTH
                      AND ALTERNATIVE SUBSTITUTION ASSUMPTIONS:
                         100% REDUCTION WITH CH3CC13 FREEZE;
              100%  REDUCTION WITH CH3CC13  FREEZE AND 100% PARTICIPATION
m
cr
LU
o.
CO
DC
<
CL
                                 Less Than 100% Participation
      -1.0
         1985
2005
2025
2045
                                                           2065
   Three  lines are displayed for each of the two cases.  The  rates  of
   substitution are 1:2 -- one kilogram of a substitute  for each  two kilograms of
   CFC-11 and CFC-12 foregone; and 1:5 -- one kilogram of  a substitute for each
   five kilograms of CFC-11 and CFC-12 foregone.  The substitute  is assumed to
   have the atmospheric characteristics of HCFC-22.  Growth in  use  after 2050 is
   assumed to be 2.5 percent per year.

-------
                                      -53-

                                   EXHIBIT 25

                       SIMULATED HALON 1301 ABUNDANCES:
             90% REDUCTION;  90%  REDUCTION AND 100% PARTICIPATION;
                     100% REDUCTION AND  100%  PARTICIPATION
p™^
d
B
I
on
5
                                                  90% Reduction with
                                                  Less Than 100% Participation
                                                  90% Reduction with
                                                  100% Participation
                                                  100% Reduction with
                                                  100% Participation
     1985
                      2005
2025
2045
2065
2085
Halon 1301  is assumed to be released slowly over 40 years  after it is placed
in fire extinguishing systems.  Most of the emissions occur  within the first
25 years  after charging.  Baseline  compound use is assumed to  be constant
after 2050.

-------
                                         -54-
                                      EXHIBIT 26


                          SIMUIATED HALON 1211 ABUNDANCES:

                90% REDUCTION;  90% REDUCTION AND 100%  PARTICIPATION;
                        100% REDUCTION AND  100% PARTICIPATION
e
00
H
3.0



2.5 -



2.0 -



1.5 -



1.0 -



0.5 -
       0.0 H
      -0.5
      -1.0
                                                      90% Reduction with
                                                      Less Than 100% Participation
                    90% Reduction with
                    100% Participation
                    —i	1	1	1	h
                                                        **	-0	0—H>	0	0	0-
                                                      100% Reduction with
                                                      100% Participation
         1985
               2005
2025
2045
2065
2085
  Halon 1211  is  assumed to be  released slowly over 30 years after  it  is placed
  in fire extinguishers.  Most of the emissions  occur within the first 20 years
  after charging.   Baseline  compound use is assumed to be constant  after 2050.

-------
                                         -55-

                                      EXHIBIT  27

                      SIMULATED  INCREASES  IN Clx  FOR ALTERNATIVE
                                  STRINGENCY LEVELS:
             90% REDUCTION; 95% REDUCTION; 97% REDUCTION; 100% REDUCTION
2
O
Cu
CO
                                                                                 dl 90%
         1985
2005
2065
2085
  Assumption:

           o  Reductions  simulated  in place of the 50% Protocol Reduction.

           o  U.S. participation; 94% participation among other developed
              nations; 65% participation among developing nations.

           o  Baseline compound use is assumed to be constant after 2050.

-------
                                     -56-

                                  EXHIBIT 28

         SIMULATED INCREASES  IN Clx FOR ALTERNATIVE STRINGENCY LEVELS
                        WITH  100%  GLOBAL PARTICIPATION:
          90%  REDUCTION;  95%  REDUCTION;  97%  REDUCTION;  100% REDUCTION
     4.0

      1985
2005
2025
2045
2065
2085
Assumptions:

         o  Reductions  simulated  in place  of  the  50%  Protocol Reduction.

         o  100% global participation.

         o  Baseline compound use  is  assumed  to be  constant after 2050.

-------
                                          -57-

                                       EXHIBIT  29

                            SIMULATED INCREASES  IN Clx FOR
                            ALTERNATIVE STRINGENCY LEVELS
                     WITH 100% PARTICIPATION AND A CH3CC13 FREEZE:
              90% REDUCTION; 95% REDUCTION; 97%  REDUCTION; 100% REDUCTION
OQ
$
I
                                                              90%


                                                              95%
                                                              97%

                                                              100%
         1985
2005
2025
2045
                                                          2065
2085
     Assumptions:

              o  Reductions simulated in place of the 50% Protocol Reduction.

              o  100% Global Participation.

              o  CH3CC13 use frozen at 1986 levels in 1989.

              o  Baseline compound use is assumed to be constant after 2050.

-------
z
o
m
I
CO
                                        -58-

                                     EXHIBIT  30

          SIMULATED INCREASES  IN Clx  FOR ALTERNATIVE  STRINGENCY LEVELS AND
              SUBSTITUTION ASSUMPTIONS WITH 100% GLOBAL PARTICIPATION
                               AND A CH3CC13 FREEZE:
            90% REDUCTION; 95% REDUCTION;  97% REDUCTION; 100% REDUCTION
         1985
   Assumptions:

            o  Reductions simulated in place of the 50% Protocol Reduction.

            o  100% Global Participation.

            o  CH3CC13 freeze at 1986 levels in 1989.

            o  Substitute assumed to have the atmospheric characteristics of
               HCFC-22.

            o  Baseline compound use is assumed to be  constant after 2050.

-------
                                         -59-

                                      EXHIBIT  31

            SIMULATED  INCREASES  IN Clx FOR ALTERNATIVE STRINGENCY LEVELS
            AND SUBSTITUTION ASSUMPTIONS WITH 100% GLOBAL PARTICIPATION,
                       A CH3CC13 FREEZE, AND POST-2050 GROWTH:
             90% REDUCTION; 95% REDUCTION; 97% REDUCTION;  100% REDUCTION
m
cr
LU
CL
c/)
DC
<
CL
         1985
2005
2025
2045
2065
2085
    Assumptions:

             o  Reductions simulated  in place of the 50% Protocol Reduction.

             o  100% global participation.

             o  CH3CC13 freeze at 1986 levels in 1989.

             o  Substitute assumed to have the atmospheric characteristics of
                HCFC-22.

             o  Baseline compound use continues to grow at 2.5% per year after
                2050.

-------
                                          -60-

                                       EXHIBIT 32

                   SIMULATED INCREASE IN Clx:  THE TRADEOFF BETWEEN
        PHASEOUT STRINGENCY AND PARTIALLY-HALOGENATED COMPOUND SUBSTITUTION
CQ
I
 3.0 -

 2.8 -

 2.6 -

 2.4 -

 2.2 -

 2.0 -

 1.8 -

 1.6 -

 1.4 -

 1.2 -

 1.0 -

0.8 -

0.6 -

0.4 -

0.2 -

0.0 -
          90% Reduction with
          1:5 Substitution
                                       100% Reduction with
                                       1:2.5 Substitution
          1 00% Reduction
          1 :3 Substitution
                                     with
          1985
                2005
2025
2045
2065
2085
  A  90% reduction with 100%  participation,  CH3CC13 freeze,  Post-2050  growth, and
  1:5  substitution yields approximately the same chlorine  increases as a 100%
  reduction with  1:3 or 1:2.5  substitution.

-------
                                        -61-

                                     EXHIBIT 33

                     SIMULATED INCREASES IN Clx FOR ALTERNATIVE
                            PHASE-OUT TIMING ASSUMPTIONS:
                       1990; 1993; 1996; 1998; 2003; AND 2008
CD
or
ui
Q.
w
tr
       -1.0
          1985
2005
2025
2045
2065
2085
2105
2125
2145
2165
   Assumptions:

             o   100% reduction in CFCs.

             o   100% global participation.

             o   CH3CC13 freeze in 1989 at 1986 levels.

             o   Baseline compound use is assumed to be constant  after 2050.

-------
                                        -62-

                                    EXHIBIT  34

                     CUMULATIVE CHLORINE  CONTRIBUTION BY  2100
                         FOR ALTERNATIVE PHASE-OUT  TIMES

     (Values are differences fron the  1998  timing value  which is set to  0.)

 Cumulative Clx Contribution
    by 2100 relative to
     1998 Phase-Out
         (PPbv)
                10  -
                 c  „
                -5   -
               -10   -
               -15
                         1990     1993      1996      1998     2003     2008
                       Phase-   Phase-    Phase-   Phase-   Phase-    Phase-
                         Out      Out      Out       Out      Out      Out
Assumptions:

          o   100% reduction in CFCs.

          o   100% global  participation

          o   CH3CC13 freeze in 1989 at 1986  levels.

          o   Baseline compound use is assumed  to be  constant  after 2050.

-------
                                     -63-

                                 REFERENCES
Connell (1986), "A Parameterized Numerical Fit to Total Column Ozone Changes
Calculated by the LLNL 1-D Model of the Troposphere and Stratosphere,"
Lawrence Livermore National Laboratory, Livermore,  California.

Connell and Wuebbles (1986),  Ozone Puturbations in the LLNL One-Dimensional
Model - Calculated Effects of Projected Trends in CFC's.  CH4.  C02.  N20 and
Halons Over 90 Years. Lawrence Livermore National Laboratory,  Livermore
California.

EPA (1987),  Assessing the Risks of Trace Gases That Can Modify the
Stratosphere. Washington, D.C., EPA 400/1-87/001.

EPA (1988), Regulatory Impact Analysis:  Protection of Stratospheric Ozone.
Washington, D.C.

ITC (1988), "Synthetic Organic Chemicals," ITC, Washington, D.C.

UNEP (1987) , "Ad Hoc Scientific Meeting to Compare Model-Generated Assessments
of Ozone Layer Change for Various Strategies for CFG Control," April 1987.

WMO (1986), Atmospheric Ozone 1985. NASA, Washington, D.C.

-------
APPENDIX A

-------
     APPENDIX A




CONCENTRATIONS MODEL

-------
                                     A-2

         This appendix presents the concentrations model used to evaluate the

potential increases in stratospheric inorganic chlorine levels,  Clx.  The

method is taken from Connell (1986) and is based on a simplified

representation of the exponential decay of abundances of each compound.  The

rate of decay is defined by an estimate of each compound's lifetime.

         Of note is that the method recognizes that each of the compounds has

slightly different "efficiencies" with which its chlorine can perturb

stratospheric ozone.  The greater a compound's efficiency, the larger the

impact its chlorine will have on stratospheric ozone.  For example, HCFC-22

dissociates (and consequently injects its chlorine) at a different altitude

than does CFG-11.  Therefore, its chlorine is less efficient at depleting

stratospheric ozone.  The estimates of chlorine abundances produced by this

method adjust for these relative efficiencies so that the total change in

chlorine abundances summed across the compounds is a consistent measure of the

potential impact on stratospheric ozone.

         The estimates of changes in Clx from 1985 levels are driven by the

following data:

         o          Emissions:  the emissions for each of the scenarios
                    examined are presented in Appendix B.

         o          Lifetimes:  the "e-folding" lifetimes of each  of the
                    compounds is presented in Exhibit 1 of the main text.
                    These lifetimes (taken from Connell, 1986) were evaluated
                    from a series of 1-D model runs with total column  ozone
                    depletions of around 10 percent  (Connell 1986, p.5).
                    Lower levels of depletion would result in higher estimates
                    of the lifetimes, and consequently higher estimates of
                    Clx.  This downward bias in the estimates of Clx exists
                    for the Protocol scenario examined in the main text,  and
                    the scenarios  in which Clx is  stabilized.

         o          Conversion Factors:  the factors that convert  emissions
                     (in millions of kilograms) into abundances of  Clx  are
                    presented in Exhibit 1 of the main text.  These conversion
                    factors reflect the number of chlorine atoms per molecule,
                    the molecular weight of the molecule, the relative
                    efficiency of  the compound's chlorine at depleting ozone,

-------
                                     A-3

                    and a factor combining the column number density of the
                    atmosphere, the surface area of the earth, and Avogadro's
                    number (see Connell 1986,  p.5).  The values used to
                    compute the conversion factors are shown in Exhibit A-l.
                    As shown in the exhibit,  the relative efficiencies for the
                    compounds vary from 0.288  for CFG-115 to 1.20 for CC14.

         o          Mixing time:  the time constant for mixing a surface -
                    released tracer completely in the atmosphere and
                    stratosphere is estimated at 3.5 years.

         o          Clx from Historical Emissions:  the algorithm estimates
                    changes in Clx from levels in 1985.  The contribution of
                    historical emissions to these changes was estimated by
                    Connell (1986) and is presented in Exhibit A-2.  As shown
                    in the exhibit, the contribution is initially positive,
                    reflecting the mixing in of emissions prior to 1985.  Over
                    the long term the contribution becomes negative,
                    reflecting the decay of the atmospheric abundance
                    associated with emissions prior to 1985.

         Given these values, the contribution of each compound to changes in

Clx in year t relative to 1985 levels is computed as:
     Clx(t.j) - CF(j) * Z emissions(j) * e'(t'i)/L(J> * (l-e(t'i)/MT)



where:

         Clx(t,j) - the change in Clx in year t (relative to 1985) associated

         with emissions of compound j;

         CF(j) - conversion factor for compound j;

         L(j) - atmospheric lifetime of compound j;

         MT - mixing time.

To compute the total change in Clx in year t, the contributions from each of

the compounds is summed, and added to the change in Clx associated with pre-

1985 emissions.



         This general method is also used for computing halon abundances.

However, the halon abundances are of the entire molecules, and are not

-------
                                     A-4




adjusted for the number of bromine and/or chlorine atoms,  or their relative




efficiencies at perturbing stratospheric ozone.  Also,  the contributions of




historical halon emissions to future changes in abundances from 1985 are




assumed to be zero.

-------
                                A-5

                            EXHIBIT A-L

                 CONVERSION FACTOR COMPUTATION  DATA
Compound #Cl/Moleculea
CFC-
CFC-
CFC-
CFC-
CFC-
CFC-
11
12
22
113
114
115
CFC14
CH3CC13
3
2
1
3
2
1
4
3
Molecular
Weight
137.
120.
86.
187,
170,
154,
153,
133,
,4
.9
.5
.4
.9
.5
.8
.4
Relative
Efficiency
1,
0.
0,
1,
0.
0,
1,
1,
.14
,84
.45
.078
.58
.288
.20
.19
Conversion
Factor5
1
0
0
0
0
0
1
1
.363x10
.761x10
.285x10
.945x10
.372x10
.102x10
.709x10
.466x10
-4
-4
-4
-4
-4
-4
-4
-4
a/  #Cl/Molecule - number of chlorine atoms per molecule.

—/   For each compound, the conversion factor is computed as:
     5.477xlO'3 * (#Cl/Molecule) / Molecular Weight * Relative
     Efficiency.
Source:  Connell  (1986)

-------
                           A-6

                       EXHIBIT A-2

          CONTRIBUTION OF PRE-1985 EMISSIONS TO
                 POST-1985  CHANGES  IN Clx
Change in
Clx
Year
1985
1990
1995
2000
2005
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
(ppbv)
0.000
0.045
-0.079
-0.206
-0.316
-0.495
-0.571
-0.641
-0.706
-0.767
-0.823
-0.876
-0.926
-0.973
-1.017
-1.059
-1.098
-1.135
Source:  Connell (1986)

-------
APPENDIX B

-------
    APPENDIX B




EMISSIONS SCENARIOS

-------
                                     B-2
  This appendix presents the global emissions of potential ozone depleting
substances for the scenarios examined in the main text.   All global emissions
are presented in millions of kilograms.   Exhibit B-l shows the list of
exhibits in this Appendix.   The scenarios that consider the effects of a
chemical substitute show an extra column to reflect these emissions.   The
chemical substitute is modeled using the atmospheric characteristics  of HCFC-
22.  The scenarios discussed in Section 5 maintain the Protocol structure
which is indicated in the exhibit titles.  All exhibits reference the relevant
sections in the main text.   These emissions scenarios are similar to  the
scenarios analyzed in EPA (1988) .   Note that the scenarios examined in Section
5  (Exhibits B-37 to B-72) do not reflect controls on the halon compounds.

-------
                                     B-3


                                 EXHIBIT B-l

                       LIST OF EXHIBITS IN APPENDIX B


Exhibit B-2:    No Controls:   Section 2.1

Exhibit B-3:    Protocol:   Section 3.1

Exhibit B-4:    True Global Freeze:   Section 3.1

Exhibit B-5:    Protocol with CH3CC13 Freeze:   Section 3.1

Exhibit B-6:    Protocol:   Participation Scenario B:   Section 3.2

Exhibit B-7:    Protocol:   Participation Scenario C:   Section 3.2

Exhibit B-8:    Protocol:   Participation Scenario D:   Section 3.2

Exhibit B-9:    Protocol:   Participation Scenario D':   Section 3.2

Exhibit B-10:  Protocol:   Particiaption Scenario E:   Section 3.2

Exhibit B-ll:  Protocol:   Participation Scenario F:   Section 3.2

Exhibit B-12:  Protocol:   Participation Scenario G:   Section 3.2

Exhibit B-13:  Protocol:   Participation Scenario H:   Section 3.2

Exhibit B-14:  Protocol:   Participation Scenario I:   Section 3.2

Exhibit B-15:  Protocol:   1:1 Substitution Scenario:   Section 3.3

Exhibit B-16:  Protocol:   1:2 Substitution Scenario:   Section 3.3

Exhibit B-17:  Protocol:   1:5 Substitution Scenario:   Section 3.3

Exhibit B-18:  Protocol:   1:10 Substitution Scenario:   Section 3.3

Exhibit B-19:  Protocol:   1:1* Substitution Scenario:   Section 3.3

Exhibit B-20:  No Controls: 2.5 Percent Growth after 2050: Section 3.4

Exhibit B-21:  Protocol:   2.5 Percent Growth After 2050:  Section 3.4

Exhibit B-22:  90 Percent Reduction Scenario (1990):   Section 4.1

Exhibit B-23:  90 Percent Reduction with 100 Percent Participation (1990)
               Section 4.1

-------
                                     B-4


                           EXHIBIT B-l (Continued)

                        LIST  OF EXHIBITS IN APPENDIX B
Exhibit B-24:


Exhibit B-25:

Exhibit B-26:


Exhibit B-27:


Exhibit B-28:


Exhibit B-29:


Exhibit B-30:


Exhibit B-31:


Exhibit B-32:


Exhibit B-33:


Exhibit B-34:


Exhibit B-35:



Exhibit B-36:



Exhibit B-37:
100 Percent Reduction with 100 Percent Participation (1990):
Section 4.1

100 Percent Reduction with CH3CC13 Freeze (1990):  Section 4.1

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (1990):  Section 4.1

100 Percent Reduction with CH3CC13 Freeze and Post-2050
Growth (1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth (1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 1:5 Substitution
(1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and 1:5 Substitution (1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 1:2 Substitution
(1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and 1:2 Substitution (1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and Post-2050 Growth
and 1:2 Substitution (1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and Post-2050 Growth
and 1:5 Substitution (1990):  Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth and 1:2 Substitution (1990):
Section 4.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth and 1:5 Substitution (1990):
Section 4.2

90 Percent Reduction Scenario (1998 -- Protocol Structure):
Section 5.1

-------
                                     B-5
Exhibit B-38:
Exhibit B-39:
Exhibit B-40:
Exhibit B-41:
Exhibit B-42:
Exhibit B-43:
Exhibit B-44:
Exhibit B-45:
Exhibit B-46:
Exhibit B-47:
Exhibit B-48:
Exhibit B-49:
Exhibit B-50:
Exhibit B-51:
            EXHIBIT B-l (Continued)

        LIST OF  EXHIBITS  IN APPENDIX B

95 Percent Reduction Scenario (1998 --  Protocol Structure):
Section 5.1

97 Percent Reduction Scenario (1998 --  Protocol Structure):
Section 5.1

100 Percent Reduction Scenario (1998 -- Protocol Structure)
Section 5.1

90 Percent Reduction with 100 Percent Participation (1998 -•
Protocol Structure):  Section 5.1

95 Percent Reduction with 100 Percent Participation (1998 -•
Protocol Structure):  Section 5.1

97 Percent Reduction with 100 Percent Participation (1998 -
Protocol Structure):  Section 5.1

100 Percent Reduction with 100 Percent Participation (1998
Protocol Structure):  Section 5.1

90 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  (1998 -- Protocol Structure):  Section 5.1

95 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  (1998 -- Protocol Structure):  Section 5.1

97 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  (1998 -- Protocol Structure):  Section 5.1

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  (1998 -- Protocol Structure):  Section 5.1

90 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  and 1:2 Substitution (1998 -- Protocol
Structure):  Section 5.1

95 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  and 1:2 Substitution (1998 -- Protocol
Structure):  Section 5.1

97 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation  and 1:2 Substitution (1998 -- Protocol
Structure):  Section 5.1

-------
                                     B-6
Exhibit B-52:
Exhibit B-53:
Exhibit B-54:
Exhibit B-55:
Exhibit B-56:
Exhibit B-57:
Exhibit B-58:
Exhibit B-59:
Exhibit B-60:
Exhibit B-61:
Exhibit B-62:
            EXHIBIT B-l  (Continued)

        LIST OF EXHIBITS IN APPENDIX B

100 Percent Reduction with  CH3CC13 Freeze  and 100 Percent
Participation and 1:2 Substitution  (1998  --  Protocol
Structure):  Section 5.1

90 Percent Reduction with CH3CC13 Freeze  and 100 Percent
Participation and 1:5 Substitution  (1998  --  Protocol
Structure):  Section 5.1

95 Percent Reduction with CH3CC13 Freeze  and 100 Percent
Participation and 1:5 Substitution  (1998  --  Protocol
Structure):  Section 5.1

97 Percent. Reduction with CH3CC13 Freeze  and 100 Percent
Participation and 1:5 Substitution  (1998  --  Protocol
Structure):  Section 5.1

100 Percent Reduction with  CH3CC13  Freeze and 100 Percent
Participation and 1:5 Substitution  (1998  --  Protocol
Structure):  Section 5.1

90 Percent Reduction with CH3CC13  Freeze  and 100 Percent
Participation and Post-2050 Growth  and 1:2 Substitution  (1998
- Protocol Structure):  Section 5.1

95 Percent Reduction with CH3CC13  Freeze  and 100 Percent
Participation and Post-2050 Growth  and 1:2 Substitution  (1998
- Protocol Structure):  Section 5.1

97 Percent Reduction with CH3CC13  Freeze  and 100 Percent
Participation and Post-2050 Growth and 1:2 Substitution  (1998
  Protocol Structure):  Section 5.1

100 Percent Reduction with CH3CC13  Freeze and 100 Percent
Participation and Post-2050 Growth and 1:2 Substitution  (1998
  Protocol Structure):  Section 5.1

90 Percent Reduction with CH3CC13  Freeze  and 100 Percent
Participation and Post-2050 Growth  and 1:5 Substitution  (1998
- Protocol Structure):  Section 5.1

95 Percent Reduction with CH3CC13  Freeze  and 100 Percent
Participation and Post-2050 Growth  and 1:5 Substitution  (1998
  Protocol Structure):  Section 5.1

-------
                                     B-7
Exhibit B-63:
Exhibit B-64:
Exhibit B-65:
Exhibit B-66:
Exhibit B-67:
Exhibit B-68:
Exhibit B-69:
Exhibit B-70:
Exhibit B-71:
Exhibit B-72:
            EXHIBIT B-l (Continued)

        LIST OF EXHIBITS IN APPENDIX B

97 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth and 1:5 Substitution (1998
  Protocol Structure):   Section 5.1

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth and 1:5 Substitution (1998
- Protocol Structure):   Section 5.1

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth and 1:2.5 Substitution (1998
-- Protocol Structure):  Section 5.1

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation and Post-2050 Growth and 1:3 Substitution (1998
- Protocol Structure):   Section 5.1

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (1990 -- Protocol Structure):  Section 5.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (1993 -- Prtocol Structure):  Section 5.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (1996 -- Protocol Structure)  Section 5.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (1998 -- Protocol Structure):  Section 5.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (2003 -- Protocol Structure):  Section 5.2

100 Percent Reduction with CH3CC13 Freeze and 100 Percent
Participation (2008 -- Protocol Structure):  Section 5.2

-------
                   B-8
               EXHIBIT  B-2
               Ho Controls
Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
401.1
491.6
586.7
689.0
787.6
893.0
1011.0
1143.8
1294.1
1464.2
1656.6
1874.3
2120.6
2193.7
2252.3
2300.8
2332.4
2332.4
2332.4
2332.4
2332.4
2332.4
2332.4
CFC-12
363.8
481.7
603.7
742.5
879.6
1004.0
1139.7
1290.6
1460.2
1652.0
1869.1
2114.7
2392.6
2707.0
2810.5
2862.0
2905.3
2919.9
2919.9
2919.9
2919.9
2919.9
2919.9
2919.9
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150
241
304
371
420
476
538
609
689
780
882
998
1129
1278
1278
1278
1278
1278
1278
1278
1278
1278
1278
.5
.9
.5
.9
.7
.0
.6
.3
.4
.0
.5
.4
.6
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
1278.1
14.3
17.5
21.3
24.4
27.7
31.3
35.4
40.1
45.4
51.3
58.1
65.7
74.3
84.1
85.2
85.2
85.2
85.2
85.2
85.2
85.2
85.2
85.2
85.2
4.7
7.9
9.3
11.5
13.5
15.4
17.5
19.8
22.4
25.3
28.6
32.4
36.7
41.5
44.8
46.9
48.2
48.3
48.3
48.3
48.3
48.3
48.3
48.3
CC14
87.4
118.7
140.3
162.0
183.3
207.4
234.6
265.5
300.3
339.8
384.5
435.0
492.1
556.8
556.8
556.8
556.8
556.8
556.8
556.8
556.8
556.8
556.8
556.8
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                  B-9
              EXHIBIT B-3
                Protocol
Global Emissions (Millions of Kilogra

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321.5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311.5
318.3
320.1
321.4
322.5
323.2
323.2
323.2
323.2
323.2
323.2
323.2
CFC-12
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
397.8
399.5
400.8
401.2
401.2
401.2
401.2
401.2
401.2
401.2
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
CFC-114
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
CFC-115
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CC14
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71.4
72.8
74.3
75.9
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
H-1301
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6

-------
                  B-10
              EXHIBIT  B-4
           True Global Freeze
Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
348.7
373.7
399.7
426.5
424.9
424.7
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
424.6
CFC-12
363.8
415.3
424.3
460.4
495.7
488.4
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
488.7
HCFC-22
73.8
116.2
137.6
152.6
163.0
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
159.1
CFC-113 CFC-114 CFC-115
150.5
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
180.3
14.3
15.2
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
14.4
4.7
7.1
8.1
9.0
9.5
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
9.9
ecu
87.4
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
96.6
CH3CC13
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211
1.4
3.1
4.6
6.4
8.9
9.1
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
9.3
H-1301
2.1
3.5
4.5
5.4
6.3
7.2
7.6
8.0
8.4
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3

-------
                  B-11
               EXHIBIT  B-5
      Protocol with CH3CC13 Freeze
Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.4
359.6
321.6
330.4
310.1
298.7
287.6
290.2
293.3
299.1
305.2
311.7
318.5
320.3
321.6
322.7
323.4
323.4
323.4
323.4
323.4
323.4
323.4
CFC-12
363.8
440.9
429.9
393.1
390.8
368.2
357.1
356.1
358.6
364.5
371.5
379.1
387.0
395.5
398.2
399.8
401.1
401.5
401.5
401.5
401.5
401.5
401.5
401.5
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.
879.
879.
879.
879.
879.1
879.1
CFC-113 C
150.5
202.6
184.8
140.8
138.4
134.2
135.7
137.3
139.0
140.8
142.7
144.6
146.7
149.0
149.0
149.0
149.0
149.0
149.0
149.0
149.0
149.0
149.0
149.0
:FC-114 C
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.6
9.7
9.9
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
FC-115
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CC14
87.4
103.9
93.1
72.3
69.9
65.7
66.9
68.0
69.3
70.6
72.1
73.6
75.2
76.9
76.9
76.9
76.9
76.9
76.9
76.9
76.9
76.9
76.9
76.9
CH3CC13
813.8
643.3
667.8
681.7
688.1
695.2
702.8
711.2
720.3
730.2
741.1
752.9
765.8
779.9
779.9
779.9
779.9
779.9
779.9
779.9
779.9
779.9
779.9
779.9
H-1211
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
H-1301
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6

-------
                  B-12
              EXHIBIT B-6
  Protocol:  Participation Scenario B
Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
353.1
309.5
316.6
294.4
281.0
268.1
269.3
271.1
275.5
280.1
285.0
290.3
291.6
292.6
293.4
293.9
293.9
293.9
293.9
293.9
293.9
293.9
CFC-12
363.8
439.4
423.3
380.5
375.8
350.9
337.6
335.1
336.2
340.6
346.2
352.1
358.4
365.1
367.2
368.5
369.5
369.9
369.9
369.9
369.9
369.9
369.9
369.9
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.7
133.2
130.2
125.5
126.4
127.4
128.4
129.6
130.7
132.0
133.3
134.8
134.8
134.8
134.8
134.8
134.8
134.8
134.8
134.8
134.8
134.8
14.3
15.7
13.7
10.3
9.4
8.9
8.9
9.0
9.2
9.3
9.4
9.5
9.7
9.8
9.8
9.8
9.8
9.8
9.8
9.8
9.8
9.8
9.8
9.8
4.7
6.9
7.2
6.9
6.3
5.5
5.0
4.9
4.9
4.9
5.0
5.1
5.1
5.2
5.2
5.2
5.3
5.3
5.3
5.3
5.3
5.3
5.3
5.3
CC14
87.4
104.1
92.1
69.7
67.0
62.6
63.5
64.4
65.4
66.4
67.5
68.7
69.9
71.2
71.2
71.2
71.2
71.2
71.2
71.2
71.2
71.2
71.2
71.2
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H-1301
1.4
3.3
5.6
8.2
11.6
14.5
14.8
16.0
16.0
16.3
16.6
16.9
17.2
17.6
18.0
18.3
18.5
18.7
18.7
18.8
18.8
18.8
18.8
18.8
2.1
3.8
4.3
4.7
5.3
5.9
6.3
6.3
6.5
6.4
6.3
6.4
6.6
6.8
6.9
7.0
7.1
7.2
7.2
7.3
7.3
7.3
7.3
7.3

-------
                  B-13









              EXHIBIT B-7





  Protocol:  Participation Scenario C





Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
352.3
305.3
307.5
278.3
262.2
246.4
244.7
243.4
245.2
247.2
249.3
251 .6
252.2
252.6
253.0
253.2
253.2
253.2
253.2
253.2
253.2
253.2
CFC-12
363.8
439.4
422.3
375.3
364.4
330.9
313.0
306.7
303.8
304.9
307.3
309.9
312.6
315.4
316.3
316.9
317.3
317.5
317.5
317.5
317.5
317.5
317.5
317.5
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.4
131.6
127.1
120.1
120.5
121.0
121.4
121.9
122.4
122.9
123.5
124.1
124.1
124.1
124.1
124.1
124.1
124.1
124.1
124.1
124.1
124.1
14.3
15.7
13.7
10.1
9.1
8.4
8.3
8.4
8.4
8.5
8.5
8.6
8.6
8.7
8.7
8.7
8.7
8.7
8.7
8.7
8.7
8.7
8.7
8.7
4.7
6.9
7.2
6.9
6.2
5.4
4.7
4.7
4.6
4.6
4.6
4.7
4.7
4.7
4.7
4.7
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
CC14
87.4
104.1
91.8
68.3
64.1
57.7
58.0
58.4
58.8
59.3
59.7
60.2
60.8
61.3
61.3
61.3
61 .3
61.3
61.3
61.3
61.3
61.3
61.3
61.3
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.6
8.2
11.5
14.4
14.6
15.7
15.5
15.6
15.7
15.8
15.9
16.1
16.2
16.3
16.4
16.5
16.5
16.5
16.5
16.5
16.5
16.5
H-1301
2.1
3.8
4.3
4.7
5.2
5.8
6.2
6.2
6.4
6.2
6.1
6.1
6.2
6.3
6.4
6.5
6.5
6.6
6.6
6.6
6.6
6.6
6.6
6.6

-------
                  B-H
               EXHIBIT  B-8
   Protocol:   Participation  Scenario D
Global Emissions (Millions of Kilogra

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
302.1
300.6
266.3
248.1
230.1
226.2
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
222.6
CFC-12
363.8
439.4
421.5
371.4
355.8
315.8
294.6
285.4
279.4
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
278.2
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.
879.
879.
879.
879.
CFC-113 C
150.5
201.4
180.2
130.5
124.7
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
116.1
:FC-114 C
14.3
15.7
13.7
10.0
8.9
8.0
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
FC-115
4.7
6.9
7.2
6.9
6.2
5.3
4.6
4.5
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
CC14
87.4
104.1
91.6
67.2
61.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
53.9
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.6
8.1
11.5
14.3
14.4
15.4
15.1
15.1
15.1
15.0
15.0
14.9
14.9
14.8
14.8
14.8
14.8
14.7
14.7
14.7
14.7
14.7
H-1301
2.1
3.8
4.3
4.7
5.2
5.8
6.2
6.1
6.3
6.1
5.9
5.9
5.9
6.0
6.0
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.1

-------
                  B-15








              EXHIBIT B-9





  Protocol:  Participation Scenario D1





Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.7
351.8
302.2
300.8
266.5
248.3
230.3
226.3
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
222.8
CFC-12
363.8
439.5
421.8
371.7
356.2
316.2
294.9
285.7
279.8
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
278.5
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.6
180.5
130.7
124.9
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
116.3
14.3
15.7
13.7
10.0
8.9
8.0
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
4.7
6.9
7.2
6.9
6.2
5.3
4.6
4.5
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
CC14
87.4
103.4
90.7
66.4
61.1
53.1
53.1
53.1
53.1
53.1
53.1
53.1
53.1
53.2
53.2
53.2
53.2
53.2
53.2
53.2
53.2
53.2
53.2
53.2
CH3CC13
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
5.6
8.1
11.5
14.3
14.4
15.4
15.1
15.1
15.1
15.0
15.0
14.9
14.9
14.8
14.8
14.8
14.8
14.7
14.7
14.7
14.7
14.7
H-1301
2.1
3.8
4.3
4.7
5.2
5.8
6.2
6.1
6.3
6.1
5.9
5.9
5.9
6.0
6.0
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.1

-------
                  B-16
              EXHIBIT B-10
  Protocol:  Participation Scenario E
Global Emissions (Millions of Kilogra

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
360.5
326.7
341.7
330.0
322.0
314.6
320.9
327.8
336.7
346.1
356.1
366.7
369.4
371.5
373.1
374.1
374.1
374.1
374.1
374.1
374.1
374.1
CFC-12
363.8
440.8
430.8
399.3
404.7
393.0
387.5
391.3
398.8
408.7
419.8
431.5
444.0
457.2
461.4
464.0
466.0
466.7
466.7
466.7
466.7
466.7
466.7
466.7
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
202.5
184.9
142.5
142.1
140.7
142.9
145.2
147.6
150.2
152.9
155.8
158.8
162.1
162.1
162.1
162.1
162.1
162.1
162.1
162.1
162.1
162.1
162.1
14.3
15.7
14.0
10.8
10.2
10.0
10.2
10.4
10.6
10.9
11.1
11.4
11.7
12.0
12.0
12.0
12.0
12.0
12.0
12.0
12.0
12.0
12.0
12.0
4.7
6.9
7.3
7.0
6.5
5.9
5.4
5.4
5.5
5.6
5.7
5.8
5.9
6.1
6.1
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
ecu
87.4
104.6
94.4
74.9
74.3
72.7
74.5
76.3
78.3
80.3
82.5
84.9
87.4
90.0
90.0
90.0
90.0
90.0
90.0
90.0
90.0
90.0
90.0
90.0
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H-1301
1.4
3.3
5.6
8.3
11.8
14.9
15.4
16.8
17.2
17.8
18.3
18.9
19.6
20.4
21.1
21.8
22.3
22.7
22.7
22.8
22.8
22.8
22.8
22.8
2.1
3.8
4.4
4.8
5.3
6.0
6.5
6.5
6.8
6.8
6.8
7.0
7.2
7.5
7.8
8.0
8.1
8.3
8.4
8.4
8.5
8.5
8.5
8.5

-------
                  B-17
              EXHIBIT B-11
  Protocol:   Participation Scenario F
Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
369.6
379.5
359.5
373.5
359.2
354.1
348.8
355.4
362.8
373.0
383.8
395.2
407.2
410.3
412.7
414.5
415.7
415.7
415.7
415.7
415.7
415.7
415.7
CFC-12
363.8
445.2
449.2
431.8
437.0
421.6
417.6
421 .4
428.2
438.7
450.6
463.1
476.4
490.4
494.8
497.5
499.7
500.4
500.4
500.4
500.4
500.4
500.4
500.4
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
205.8
196.8
164.2
163.5
161.0
164.4
167.9
171.6
175.5
179.5
183.9
188.4
193.1
193.1
193.1
193.1
193.1
193.1
193.1
193.1
193.1
193.1
193.1
14.3
15.9
14.5
11.8
11.1
10.8
10.9
11.2
11.4
11.7
11.9
12.2
12.5
12.9
12.9
12.9
12.9
12.9
12.9
12.9
12.9
12.9
12.9
12.9
4.7
6.9
7.4
7.3
6.8
6.2
5.8
5.8
5.8
6.0
6.1
6.2
6.3
6.5
6.6
6.6
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
CC14
87.4
106.1
99.8
83.8
82.1
78.8
80.8
82.8
85.0
87.3
89.7
92.3
95.0
97.9
97.9
97.9
97.9
97.9
97.9
97.9
97.9
97.9
97.9
97.9
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.7
8.5
12.1
15.3
16.2
17.7
18.0
18.6
19.2
19.8
20.5
21.3
22.0
22.6
23.1
23.5
23.5
23.6
23.6
23.6
23.6
23.6
H-1301
2.1
3.8
4.4
4.9
5.4
6.2
6.6
6.7
7.0
7.0
7.0
7.2
7.5
7.8
8.0
8.2
8.4
8.5
8.6
8.6
8.7
8.7
8.7
8.7

-------
                  B-18
              EXHIBIT B-12
   Protocol:  Participation ScenarioG
Global Emissions (Millions of Kilogra

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
373.8
395.3
389.5
407.7
398.1
397.9
397.2
407.1
417.8
431.6
446.1
461.3
477.4
481.5
484.7
487.2
488.7
488.7
488.7
488.7
488.7
488.7
488.7
CFC-12
363.8
448.6
464.8
462.5
473.7
464.0
465.6
473.2
483.4
497.5
513.2
529.8
547.2
565.6
571.4
575.0
577.8
578.7
578.7
578.7
578.7
578.7
578.7
578.7
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 I
150.5
208.4
206.5
182.8
183.4
182.4
187.2
192.2
197.5
203.0
208.8
215.0
221.4
228.2
228.2
228.2
228.2
228.2
228.2
228.2
228.2
228.2
228.2
228.2
:FC-114 C
14.3
16.0
15.0
12.7
12.2
11.9
12.1
12.4
12.8
13.1
13.5
13.9
14.3
14.7
14.8
14.8
14.8
14.8
14.8
14.8
14.8
14.8
14.8
14.8
FC-115
4.7
6.9
7.5
7.5
7.2
6.6
6.3
6.3
6.4
6.6
6.7
6.9
7.1
7.2
7.4
7. it
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
CC14
87.4
107.4
104.4
92.3
91.2
88.5
91.1
93.9
96.8
99.9
103.1
106.5
110.1
113.8
113.8
113.8
113.8
113.8
113.8
113.8
113.8
113.8
113.8
113.8
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.7
8.7
12.4
15.8
17.0
18.7
19.2
20.0
20.7
21.5
22.5
23.5
24.4
25.2
25.9
26.4
26.4
26.5
26.5
26.5
26.5
26.5
H-1301
2.1
3.8
4.5
5.0
5.6
6.3
6.8
7.0
7.3
7.4
7.4
7.7
8.0
8.4
8.7
8.9
9.1
9.3
9.4
9.5
9.5
9.5
9.5
9.5

-------
                  B-19
              EXHIBIT B-13
  Protocol:  Participation Scenario  H
Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
369.6
380.5
364.7
385.0
379.3
377.5
375.9
386.3
397.5
410.8
424.9
439.8
455.5
459.6
462.7
465.1
466.6
466.6
466.6
466.6
466.6
466.6
466.6
CFC-12
363.8
445.2
450.5
438.3
451.2
446.7
448.3
456.9
468.7
483.2
499.1
515.9
533.7
552.5
558.4
562.0
565.0
565.8
565.8
565.8
565.8
565.8
565.8
565.8
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
205.8
197.2
166.1
167.4
167.7
171.7
175.9
180.4
185.1
190.0
195.2
200.7
206.5
206.5
206.5
206.5
206.5
206.5
206.5
206.5
206.5
206.5
206.5
14.3
15.9
14.6
12.0
11.5
11.5
11.7
12.0
12.3
12.7
13.0
13.4
13.8
14.3
14.3
14.3
14.3
14.3
14.3
14.3
14.3
14.3
14.3
14.3
4.7
6.9
7.4
7.3
6.9
6.4
6.0
6.1
6.2
6.4
6.5
6.7
6.9
7.0
7.2
7.2
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
CC14
87.4
106.1
100.2
85.6
85.8
85.0
87.6
90.3
93.2
96.2
99.4
102.8
106.4
110.2
110.2
110.2
110.2
110.2
110.2
110.2
110.2
110.2
110.2
110.2
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.7
8.5
12.2
15.5
16.5
18.1
18.7
19.5
20.3
21.1
22.1
23.2
24.2
25.1
25.8
26.3
26.4
26.4
26.4
26.4
26.4
26.4
H-1301
2.1
3.8
4.4
4.9
5.5
6.2
6.7
6.8
7.2
7.3
7.3
7.6
7.9
8.3
8.6
8.9
9.1
9.3
9.4
9.5
9.5
9.5
9.5
9.5

-------
                  B-20
              EXHIBIT B-U
  Protocol:  Participation Scenario I
Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
375.7
399.3
396.2
417.1
411.5
414.9
417.3
428.4
440.4
455.4
471.3
488.0
505.6
511.1
515.3
518.7
520.7
520.7
520.7
520.7
520.7
520.7
520.7
CFC-12
363.8
453.7
483.4
494.7
514.3
507.8
512.7
523.6
536.9
554.2
573.3
593.4
614.5
636.8
644.2
648.0
651.0
652.0
652.0
652.0
652.0
652.0
652.0
652.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.
879.
879.
879.
879.
879.
CFC-113 C
150.5
214.8
222.5
210.3
212.7
213.4
220.2
227.3
234.7
242.6
250.8
259.4
268.5
278.0
278.0
278.0
278.0
278.0
278.0
278.0
278.0
278.0
278.0
278.0
:FC-114 C
14.3
16.4
16.3
14.8
14.5
14.4
14.7
15.2
15.7
16.2
16.8
17.4
18.0
18.7
18.7
18.7
18.7
18.7
18.7
18.7
18.7
18.7
18.7
18.7
FC-115
4.7
7.1
7.9
8.4
8.5
8.3
8.1
8.3
8.5
8.8
9.1
9.4
9.7
10.1
10.3
10.4
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
CC14
87.4
109.1
108.2
98.5
97.7
95.4
98.5
101.7
105.1
108.7
112.4
116.4
120.5
124.9
124.9
124.9
124.9
124.9
124.9
124.9
124.9
124.9
124.9
124.9
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
5.8
8.7
12.5
15.9
17.2
18.9
19.5
20.4
21.2
22.1
23.1
24.2
25.3
26.1
26.9
27.4
27.5
27.6
27.6
27.6
27.6
27.6
H-1301
2.1
3.8
4.5
5.1
5.7
6.5
7.1
7.4
7.8
8.0
8.2
8.5
9.0
9.5
9.9
10.2
10.5
10.7
10.9
11.0
11.1
11.1
11.1
11.1

-------
                                                   B-21
                                               EXHIBIT B-15
                                   Protocol:   1:1  Substitution  Scenario
                                 Global  Emissions (Millions  of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321.5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311.5
318.3
320.1
321.4
322.5
323.2
323.2
323.2
323.2
323.2
323.2
323.2
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
397.8
399.5
400.8
401 .2
401.2
401.2
401.2
401.2
401.2
401.2
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CCL4
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71.4
72.8
74.3
75.9
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
CH3CCL3
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H-1301
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6
SUBST
0.0
77.7
306.3
614.9
847.9
1113.8
1377.4
1658.4
1955.7
2288.9
2663.2
3087.6
3568.7
4114.1
4286.3
4393.4
4482.8
4527.9
4527.9
4527.9
4527.9
4527.9
4527.9
4527.9
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123, 141b, 142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-22
                                               EXHIBIT B-16
                                   Protocol:  1:2 Substitution Scenario
                                 Global Emissions (Millions of Kilogra

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321.5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311.5
318.3
320.1
321.4
322.5
323.2
323.2
323.2
323.2
323.2
323.2
323.2
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
397.8
399.5
400.8
401.2
401.2
401.2
401.2
401.2
401.2
401.2
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CCL4
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71.4
72.8
74.3
75.9
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
CH3CCL3
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H-1301
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6
SUBST *
0.0
38.8
153.2
307.5
424.0
556.9
688.7
829.2
977.9
1144.5
1331.6
1543.8
1 784 . 4
2057.1
2143.2
2196.7
2241.4
2264.0
2264.0
2264.0
2264.0
2264.0
2264.0
2264.0
*  Partially-halogenated chlorine-containing chemical substitutes  (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-23
                                               EXHIBIT B-17
                                   Protocol:   1:5 Substitution Scenario
                                 Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321.5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311 .5
318.3
320.1
321.4
322.5
323.2
323.2
323.2
323.2
323.2
323.2
323.2
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
397.8
399.5
400.8
401.2
401.2
401.2
401 .2
401.2
401 .2
401.2
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CCL4
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71 .4
72.8
74.3
75.9
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
CH3CCL3
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H-1301
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6
SUBST *
0.0
15.5
61.3
123.0
169.6
222.8
275.5
331.7
391.1
457.8
532.6
617.5
713.7
822.8
857.3
878.7
896.6
905.6
905.6
905.6
905.6
905.6
905.6
905.6
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-24
                                               EXHIBIT  B-18
                                  Protocol:  1:10 Substitution Scenario
                                 Global  Emissions (Millions of Kilogra

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321.5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311.5
318.3
320.1
321.4
322.5
323.2
323.2
323.2
323.2
323.2
323.2
323.2
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
397.8
399.5
400.8
401.2
401.2
401.2
401.2
401.2
401.2
401.2
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CCL4 CH3CCL3
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71.4
72.8
74.3
75.9
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
-1301
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6
SUBST *
0.0
7.8
30.6
61.5
84.8
111.4
137.7
165.8
195.6
228.9
266.3
308.8
356.9
411.4
428.6
439.3
448.3
452.8
452.8
452.8
452.8
452.8
452.8
452.8
 *  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22, 123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-25
                                               EXHIBIT B-19
                                   Protocol 1:1* Substitution Scenario
                                 Global Emissions (Nil I ions of  KilograBs)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321.5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311.5
318.3
320.1
321.4
322.5
323.2
323.2
323.2
323.2
323.2
323.2
323.2
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
397.8
399.5
400.8
401 .2
401.2
401.2
401.2
401.2
401.2
401.2
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
148.8
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.5
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
CCL4
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71.4
72.8
74.3
75.9
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
77.6
CH3CCL3
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211 H-1301
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
18.9
19.3
19.6
19.9
19.9
19.9
19.9
19.9
19.9
19.9
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.3
7.4
7.5
7.6
7.6
7.6
7.6
7.6
7.6
SUBST *
0.0
118.9
435.6
864.5
1155.4
1487.4
1818.8
2175.9
2559.3
2989.9
3474.6
4024.2
4647.0
5352.9
5529.5
5638.6
5729.3
5774.5
5774.5
5774.5
5774.5
5774.5
5774.5
5774.5
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22, 123, 141b, 142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                    B-26








               EXHIBIT B-ZO





No Controls:  2.5 percent Growth After 2050





  Global Emissions  (HiIlions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
401.1
491.6
586.7
689.0
787.6
893.0
1011.0
1143.8
1294.1
1464.2
1656.6
1874.3
2120.6
2399.2
2714.5
3071.2
3474.8
3931.4
4448.0
5032.6
5693.9
6442.1
7288.6
CFC-12
363.8
481.7
603.7
742.5
879.6
1004.0
1139.7
1290.6
1460.2
1652.0
1869.1
2114.7
2392.6
2707.0
3062.7
3465.2
3920.6
4435.8
5018.7
5678.1
6424.3
7268.5
8223.6
9304.3
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1 790 . 5
2025.8
2292.0
2593.2
CFC-113
150.5
240.9
304.5
371.9
420.7
476.0
538.6
609.3
689.4
780.0
882.5
998.4
1129.6
1278.1
1446.0
1636.0
1851.0
2094.3
2369.5
2680.9
3033.1
3431.7
3882.7
4392.8
CFC-114
14.3
18.0
21.3
24.4
27.7
31.3
35.4
40.1
45.4
51.3
58.1
65.7
74.3
84.1
95.2
107.7
121.8
137.8
155.9
176.4
199.6
225.8
255.5
289.1
CFC-115
4.
7.
9.
11.
13.
15.
17.
19.
22.
25.
28.
32.
36.
41.
46.
53.
60.
68.
76.
87.
98.
111.
126.
142.
7
4
3
5
5
4
5
8
4
3
6
4
7
5
9
1
1
0
9
0
5
4
1
6
CC14
87.4
118.7
140.3
162.0
183.3
207.4
234.6
265.5
300.3
339.8
384.5
435.0
492.1
556.8
630.0
712.8
806.4
912.4
1032.3
1167.9
1321.4
1495.1
1691.5
1913.8
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3861.3
4368.7
4942.8
5592.3
6327.1
7158.6
8099.3
9163.5
10367.7
11730.3
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61.4
69.7
78.9
89.2
101.0

-------
                  B-27
              EXHIBIT B-21
Protocol:  2.5 Percent Growth After 2050
Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
321 .5
330.3
309.9
298.5
287.4
290.0
293.1
298.9
305.0
311.5
318.3
325.6
333.3
341.5
350.2
359.4
369.1
379.5
390.5
402.1
414.4
CFC-12
363.8
440.8
429.5
392.8
390.4
367.9
356.8
355.8
358.3
364.1
371.2
378.7
386.7
395.2
404.1
413.6
423.7
434.4
445.8
457.8
470.6
484.2
498.6
513.9
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
CFC-113 CFC-114 CFC-115
150.5
202.5
184.6
140.6
138.2
134.0
135.5
137.1
138.8
140.6
142.5
144.4
146.5
148.8
151.1
153.6
156.3
159.1
162.0
165.1
168.5
172.0
175.7
179.6
14.3
15.7
13.9
10.6
9.8
9.4
9.4
9.5
9.7
9.8
10.0
10.2
10.4
10.6
10.8
11.0
11.2
11.4
11.7
12.0
12.3
12.6
12.9
13.2
4.7
6.9
7.3
7.0
6.4
5.7
5.2
5.1
5.1
5.2
5.3
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6.0
6.1
6.2
6.3
6.5
6.6
ecu
87.4
104.6
94.0
73.1
70.6
66.5
67.6
68.8
70.1
71.4
72.8
74.3
75.9
77.6
79.4
81.3
83.3
85.5
87.7
90.2
92.7
95.4
98.3
101.3
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3861.3
4368.7
4942.8
5592.3
6327.1
7158.6
8099.3
9163.5
10367.7
11730.3
H-1211
1.4
3.3
5.6
8.3
11.7
14.7
15.2
16.4
16.5
16.9
17.2
17.6
18.0
18.5
19.0
19.6
20.2
20.8
21.5
22.3
23.2
24.1
25.1
26.2
H-1301
2.1
3.8
4.4
4.8
5.3
6.0
6.4
6.4
6.6
6.6
6.5
6.6
6.8
7.0
7.2
7.4
7.6
7.8
8.1
8.3
8.6
8.8
9.1
9.4

-------
                  B-28
              EXHIBIT B-22
  90 Percent Reduction Scenario (1990)
Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
140.0
141.2
151.2
165.5
111.7
117.0
122.2
127.3
132.7
138.5
144.6
151.1
158.0
159.7
161.1
162.1
162.8
162.8
162.8
162.8
162.8
162.8
162.8
CFC-12
363.8
209.9
117.6
149.5
179.8
135.5
142.9
149.1
155.4
162.1
169.2
176.7
184.7
193.1
195.8
197.5
198.8
199.2
199.2
199.2
199.2
199.2
199.2
199.2
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
31.9
37.9
44.2
45.6
47.0
48.5
50.1
51.8
53.5
55.4
57.4
59.5
61.7
61.7
61.7
61.7
61.7
61.7
61.7
61.7
61.7
61.7
61.7
14.3
5.3
2.9
3.2
3.3
3.5
3.6
3.7
3.9
4.0
4.2
4.4
4.5
4.7
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.7
5.6
4.0
3.4
3.0
1.6
1.7
1.8
1.8
1.9
2.0
2.0
2.1
2.2
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
CC14
87.4
20.1
22.8
25.4
26.4
27.4
28.5
29.7
31.0
32.3
33.7
35.2
36.8
38.5
38.5
38.5
38.5
38.5
38.5
38.5
38.5
38.5
38.5
38.5
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
2.8
3.2
4.2
6.1
3.5
4.1
4.0
4.4
4.7
5.1
5.5
6.0
6.5
7.0
7.4
7.8
8.0
8.0
8.1
8.1
8.1
8.1
8.1
H-1301
2.1
2.5
2.3
2.2
2.3
2.6
1.9
2.0
2.2
1.5
1.6
1.7
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.5
2.5
2.5
2.5
2.5

-------
                           B-29
                       EXHIBIT  B-23
90 Percent Reduction with 100 Percent Participation (1990)
         Global  Emissions (Hi 11 ions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
106.4
96.3
96.1
104.4
39.5
39.3
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
39.2
CFC-12
363.8
179.5
66.9
83.5
105.9
48.1
48.1
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
48.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
19.5
20.7
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
21.8
14.3
4.3
1.4
1.4
1.4
1.4
1.4
1 .4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
4.7
5.5
3.6
2.9
2.4
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
CC14
87.4
9.6
9.5
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
9.4
CH3CC13
813.8
738.1
866.4
992.9
1 1 23 . 4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
2.8
2.9
3.5
5.1
1.6
1.8
1.2
1.3
1.3
1.3
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
H-1301
2.1
2.4
2.1
1.9
1.9
2.1
1.3
1.3
1.4
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5

-------
                           B-30
                       EXHIBIT B-24
100 Percent Reduction with 100 Percent Participation (1990)
         Global Emissions  (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
153.4
27.8
42.4
63.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14.3
3.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
4.7
5.4
3.2
2.3
1.7
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
ecu
87.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
2.7
2.7
3.1
4.5
.5
.6
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1301
2.1
2.3
1 .9
1.7
1.6
1.8
.8
.8
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0

-------
                      B-31
                  EXHIBIT B-2S
100 Percent Reduction with CH3CC13 Freeze (1990)
    Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
116.9
115.3
123.4
136.1
76.1
81.6
86.9
92.0
97.4
103.2
109.3
115.8
122.7
124.4
125.8
126.8
127.5
127.5
127.5
127.5
127.5
127.5
127.5
CFC-12
363.8
186.4
82.0
112.2
141.3
92.1
99.4
105.7
112.0
118.7
125.8
133.3
141.3
149.7
152.4
154.0
155.4
155.7
155.7
155.7
155.7
155.7
155.7
155.7
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
13.6
18.5
23.8
25.1
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
14.3
4.2
1.6
1.9
2.0
2.2
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
4.7
5.5
3.6
2.8
2.4
.9
1.0
1.0
1.1
1.1
1.2
1.3
1.4
1.4
1.5
1.5
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
CC14
87.4
11.4
14.2
16.9
17.9
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
CH3CC13
813.8
615.7
627.5
639.4
645.8
652.8
660.5
668.9
678.0
687.9
698.8
710.6
723.5
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
H-1211
1.4
2.8
3.0
3.8
5.6
2.5
3.0
2.7
3.0
3.2
3.4
3.6
3.9
4.2
4.4
4.6
4.8
4.9
5.0
5.0
5.0
5.0
5.0
5.0
H-1301
2.1
2.4
2.1
2.0
2.0
2.3
1.5
1.5
1.6
.9
.9
1.0
1.1
1.2
1.2
1.3
1.3
1.4
1.4
1.4
1.4
1.4
1.4
1.4

-------
                                     B-32
                                 EXHIBIT B-26





100 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation (1990)





                   Global  Emissions (Millions of  Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
153.4
27.8
42.4
63.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14.3
3.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
4.7
5.4
3.2
2.3
1.7
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
ecu
87.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211 H-1301
1.4
2.7
2.7
3.1
4.5
.5
.6
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
2.1
2.3
1.9
1.7
1.6
1.8
.8
.8
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0

-------
                                B-33
                            EXHIBIT B-27
100 Percent Reduction with CH3CC13 Freeze and Post-2050 Growth (1990)
              Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
116.9
115.3
123.4
136.1
76.1
81 .6
86.9
92.0
97.4
103.2
109.3
115.8
122.7
129.9
137.7
145.8
154.5
163.7
173.5
183.8
194.8
206.4
218.8
CFC-12
363.8
186.4
82.0
112.2
141 .3
92.1
99.4
105.7
112.0
118.7
125.8
133.3
141 .3
149.7
158.7
168.2
178.3
189.0
200.4
212.4
225.2
238.8
253.2
268.4
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
CFC-113 CFC-114 CFC-115
150.5
13.6
18.5
23.8
25.1
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
43.6
46.1
48.8
51.5
54.5
57.6
60.9
64.5
68.2
72.1
14.3
4.2
1.6
1.9
2.0
2.2
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.6
3.8
4.1
4.3
4.6
4.8
5.1
5.4
5.8
6.1
4.7
5.5
3.6
2.8
2.4
.9
1.0
1.0
1.1
1.1
1.2
1.3
1.4
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.2
2.3
2.4
2.6
CC14
87.4
11.4
14.2
16.9
17.9
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
31.8
33.7
35.7
37.9
40.1
42.6
45.1
47.8
50.7
53.7
CH3CCL3
813.8
615.7
627.5
639.4
645.8
652.8
660.5
668.9
678.0
687.9
698.8
710.6
723.5
737.6
752.9
769.7
788.0
808.0
829.9
853.7
879.8
908.3
939.4
973.4
H-1211
1.4
2.8
3.0
3.8
5.6
2.5
3.0
2.7
3.0
3.2
3.4
3.6
3.9
4.2
4.5
4.8
5.1
5.4
5.7
6.1
6.4
6.8
7.2
7.6
H-1301
2.1
2.4
2.1
2.0
2.0
2.3
1.5
1.5
1.6
.9
.9
1.0
1.1
1.2
1.3
1.3
1.4
1.5
1.6
1.7
1.8
2.0
2.1
2.2

-------
                                           B-34
                                       EXHIBIT B-28
100 Percent Reduction with CH3CC13 and 100 Percent Partipation and Post-2050 Growth (1990)





                         Global Emissions (Hi 11 ions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
153.4
27.8
42.4
63.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
CFC-113 CFC-114 CFC-115
150.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14.3
3.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
,0
4.7
5.4
3.2
2.3
1.7
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CCL4
87.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211 H-1301
1.4
2.7
2.7
3.1
4.5
.5
.6
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
2.1
2.3
1.9
1.7
1.6
1.8
.8
.8
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0

-------
                                                  B-35
                                              EXHIBIT B-29
                  100 Percent Reduction with CH3CC13 Freeze and 1:5 Substitution (1990)
                                Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
116.9
115.3
123.4
136.1
76.1
81.6
86.9
92.0
97.4
103.2
109.3
115.8
122.7
124.4
125.8
126.8
127.5
127.5
127.5
127.5
127.5
127.5
127.5
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
186.4
82.0
112.2
141.3
92.1
99.4
105.7
112.0
118.7
125.8
133.3
141.3
149.7
152.4
154.0
155.4
155.7
155.7
155.7
155.7
155.7
155.7
155.7
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
13.6
18.5
23.8
25.1
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
14.3
4.2
1.6
1.9
2.0
2.2
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
4.7
5.5
3.6
2.8
2.4
0.9
1.0
1.0
1.1
1.1
1.2
1.3
1.4
1.4
.5
.5
.6
.6
.6
1.6
1.6
1.6
1.6
1.6
CCL4 CH3CCL3
87.4
11.4
14.2
16.9
17.9
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
813.8
615.7
627.5
639.4
645.8
652.8
660.5
668.9
678.0
687.9
698.8
710.6
723.5
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
H-1211 H-1301
1.4
2.8
3.0
3.8
5.6
2.5
3.0
2.7
3.0
3.2
3.4
3.6
3.9
4.2
4.4
4.6
4.8
4.9
5.0
5.0
5.0
5.0
5.0
5.0
2.1
2.4
2.1
2.0
2.0
2.3
1.5
1.5
1.6
0.9
0.9
1.0
1.1
1.2
1.2
1.3
1.3
1.4
1.4
1.4
1.4
1.4
1.4
1.4
SUBST *
0.0
115.9
179.6
218.7
258.2
324.7
370.3
421.8
480.0
546.0
620.9
705.7
802.0
911.0
945.5
966.9
984.8
993.8
993.8
993.8
993.8
993.8
993.8
993.8
*  Partially-halogenated chlorine-containing chemical  substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-36
                                               EXHIBIT B-30

    100 Percent Reduction with  CH3CC13 Freeze and  100 Percent Participation and 1:5 Substitution (1990)

                                 Global Emissions (Millions of  Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12 HCFC-22 C
363.8
153.4
27.8
42.4
63.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
:FC-113 CFC-114 CFC-115
150.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
3.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
5.4
3.2
2.3
1.7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211 H-1301
1.4
2.7
2.7
3.1
4.5
0.5
0.6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
2.1
2.3
1.9
1.7
1.6
1.8
0.8
0.8
0.9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
SUBST *
0.0
129.8
200.1
244.3
286.7
358.3
406.5
460.3
520.8
589.2
666.7
754.3
853.4
965.5
1000.8
1022.9
1041.2
1050.5
1050.5
1050.5
1050.5
1050.5
1050.5
1050.5
 *  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22, 123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-37
                                               EXHIBIT B-31
                  100 Percent Reduction with CH3CC13 Freeze and 1:2 Substitution (1990)
                                 Global Emissions (Millions of  Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
116.9
115.3
123.4
136.1
76.1
81.6
86.9
92.0
97.4
103.2
109.3
115.8
122.7
124.4
125.8
126.8
127.5
127.5
127.5
127.5
127.5
127.5
127.5
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
186.4
82.0
112.2
141.3
92.1
99.4
105.7
112.0
118.7
125.8
133.3
141.3
149.7
152.4
154.0
155.4
155.7
155.7
155.7
155.7
155.7
155.7
155.7
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
13.6
18.5
23.8
25.1
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
14.3
4.2
1.6
1.9
2.0
2.2
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
4.7
5.5,
3.6
2.8
2.4
0.9
1.0
1.0
1.1
1.1
1.2
1.3
1.4
1.4
1.5
1.5
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
CCL4 CH3CCL3
87.4
11.4
14.2
16.9
17.9
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
813.8
615.7
627.5
639.4
645.8
652.8
660.5
668.9
678.0
687.9
698.8
710.6
723.5
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
737.6
H-1211 H-1301
1.4
2.8
3.0
3.8
5.6
2.5
3.0
2.7
3.0
3.2
3.4
3.6
3.9
4.2
4.4
4.6
4.8
4.9
5.0
5.0
5.0
5.0
5.0
5.0
2.1
2.4
2.1
2.0
2.0
2.3
1.5
1.5
1.6
0.9
0.9
1.0
1.1
1.2
1.2
1.3
1.3
1.4
1.4
1.4
1.4
1.4
1.4
1.4
SUBST '
0.0
289.8
449.0
546.8
645.6
811.7
925.9
1054.5
1200.0
1365.0
1552.2
1764.4
2004.9
2277.6
2363.7
2417.3
2462.0
2484.6
2484.6
2484.6
2484.6
2484.6
2484.6
2484.6
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  1426)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-38
                                               EXHIBIT  B-32

    100  Percent  Reduction with CH3CC13 Freeze and 100 Percent Participation and 1:2 Substitution (1990)

                                 Global  Emissions (Millions  of Kilograos)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
153.4
27.8
42.4
63.4
0.0
0.0
0.0
0.0
0.0
0.0
, 0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
3.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
5.4
3.2
2.3
1.7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
• 0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211 H-1301
1.4
2.7
2.7
3.1
4.5
0.5
0.6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
2.1
2.3
1.9
1.7
1.6
1.8
0.8
0.8
0.9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
SUBST *
0.0
324.6
500.2
610.9
716.9
895.8
1016.4
1150.8
1302.0
1473.1
1666.7
1885.6
2133.5
2413.8
2502.1
2557.2
2603.1
2626.2
2626.2
2626.2
2626.2
2626.2
2626.2
2626.2
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22, 123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-39


                                               EXHIBIT B-33

           100 Percent  Reduction with  CH3CC13 Freeze and Post-2050 Growth with  1:2 Substitution

                                 Global  Emissions  (Millions  of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
116.9
115.3
123.4
136.1
76.1
81 .6
86.9
92.0
97.4
103.2
109.3
115.8
122.7
129.9
137.7
145.8
154.5
163.7
173.5
183.8
194.8
206.4
218.8
CFC-12
363.8
186.4
82.0
112.2
141.3
92.1
99.4
105.7
112.0
118.7
125.8
133.3
141.3
149.7
158.7
168.2
178.3
189.0
200.4
212.4
225.2
238.8
253.2
268.4
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.9
1582.6
1 790 . 5
2025.8
2292.0
2593.2
150.5
13.6
18.5
23.8
25.1
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
43.6
46.1
48.8
51.5
54.5
57.6
60.9
64.5
68.2
72.1
14.3
4.2
1.6
1.9
2.0
2.2
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.6
3.8
4.1
4.3
4.6
4.8
5.1
5.4
5.8
6.1
4.7
5.5
3.6
2.8
2.4
0.9
1.0
1.0
1.1
1.1
1.2
1.3
1.4
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.2
2.3
2.4
2.6
CC14 CH3CC13
87.4
11.4
14.2
16.9
17.9
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
31.8
33.7
35.7
37.9
40.1
42.6
45.1
47.8
50.7
53.7
813.8
615.7
627.5
639.4
645.8
652.8
660.5
668.9
678.0
687.9
698.8
710.6
723.5
737.6
752.9
769.7
788.0
808.0
829.9
853.7
879.8
908.3
939.4
973.4
H-1211
1.4
2.8
3.0
3.8
5.6
2.5
3.0
2.7
3.0
3.2
3.4
3.6
3.9
4.2
4.5
4.8
5.1
5.4
5.7
6.1
6.4
6.8
7.2
7.6
H-1301 SUBST *
2.1
2.4
2.1
2.0
2.0
2.3
1.5
1.5
1.6
0.9
0.9
1.0
1.1
1.2
1.3
1.3
1.4
1.5
1.6
1.7
1.8
2.0
2.1
2.2
0.0
289.8
449.0
546.8
645.6
811.7
925.9
1054.5
1200.0
1365.0
1552.2
1764.4
2004.4
2277.6
2586.6
2936.9
3333.9
3783.6
4293.0
4870.1
5524.0
6264.4
7103.1
8052.8
*  Partialty-halogenated chlorine-containing chemical substitutes (such as HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-40


                                               EXHIBIT B-34

           100 Percent Reduction with CH3CC13 Freeze and Post-2050 Growth with  1:5  Substitution

                                 Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
116.9
115.3
123.4
136.1
76.1
81.6
86.9
92.0
97.4
103.2
109.3
115.8
122.7
129.9
137.7
145.8
154.5
163.7
173.5
183.8
194.8
206.4
218.8
CFC-12
363.8
186.4
82.0
112.2
141.3
92.1
99.4
105.7
112.0
118.7
125.8
133.3
141.3
149.7
158.7
168.2
178.3
189.0
200.4
212.4
225.2
238.8
253.2
268.4
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.5
13.6
18.5
23.8
25.1
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
43.6
46.1
48.8
51.5
54.5
57.6
60.9
64.5
68.2
72.1
14.3
4.2
1.6
1.9
2.0
2.2
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.6
3.8
4.1
4.3
4.6
4.8
5.1
5.4
5.8
6.1
4.7
5.5
3.6
2.8
2.4
0.9
1.0
1.0
1.1
1.1
1.2
1.3
1.4
1.4
.5
.6
.7
.8
.9
2.0
2.2
2.3
2.4
2.6
CC14 CH3CC13
87.4
11.4
14.2
16.9
17.9
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
31.8
33.7
35.7
37.9
40.1
42.6
45.1
47.8
50.7
53.7
813.8
615.7
627.5
639.4
645.8
652.8
660.5
668.9
678.0
687.9
698.8
710.6
723.5
737.6
752.9
769.7
788.0
808.0
829.9
853.7
879.8
908.3
939.4
973.4
H-1211
1.4
2.8
3.0
3.8
5.6
2.5
3.0
2.7
3.0
3.2
3.4
3.6
3.9
4.2
4.5
4.8
5.1
5.4
5.7
6.1
6.4
6.8
7.2
7.6
H-1301
2.1
2.4
2.1
2.0
2.0
2.3
1.5
1.5
1.6
0.9
0.9
1.0
1.1
1.2
1.3
1.3
1.4
1.5
1.6
1.7
1.8
2.0
2.1
2.2
SUBST *
0.0
115.9
179.6
218.7
258.2
324.7
370.3
421.8
480.0
546.0
620.9
705.7
802.0
911.0
1034.7
1174.8
1333.5
1513.4
1717.2
1948.0
2209.6
2505.8
2841.2
3221.1
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-41
                                               EXHIBIT B-35

       100  Percent  Reduction with CH3CC13 Freeze and 100 Percent  Participation and Post-2050  Growth
                                           and  1:2 Substitution

                                 Global  Emissions (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12
363.8
153.4
27.8
42.4
63.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
CFC-113
150.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-114
14.3
3.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-115
4.7
5.4
3.2
2.3
1.7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CC14
87.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CH3CC13
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211
1.4
2.7
2.7
3.1
4.5
0.5
0.6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
H-1301
2.1
2.3
1.9
1.7
1.6
1.8
0.8
0.8
0.9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
SUBST *
0.0
324.6
500.2
610.9
716.9
895.8
1016.4
1150.8
1302.0
1473.1
1666.7
1885.6
2133.5
2413.8
2731.0
3089.9
3495.9
3955.3
4475.1
5063.1
5728.5
6481.2
7332.9
8296.5
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-42
                                               EXHIBIT B-36

       100 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation and  Post-2050  Growth
                                            and 1:5  Substitution

                                 Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
80.2
67.2
65.1
71.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12
363.8
153.4
27.8
42.4
63.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
3.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
5.4
3.2
2.3
1.7
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CC14 CH3CC13
87.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
606.6
H-1211
1.4
2.7
2.7
3.1
4.5
0.5
0.6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
H-1301
2.1
2.3
1.9
1.7
1.6
1.8
0.8
0.8
0.9
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
SUBST
0.0
129.8
200.1
244.3
286.7
358.3
406.5
460.3
520.8
589.2
666.7
754.3
853.4
965.5
1092.4
1235.9
1398.4
1582.1
1790.0
2025.2
2291.4
2592.5
2933.1
3318.6
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                  B-43
                EXHIBIT B-37
  90 Percent Reduction Scenario (1998)
Global Emissions (Millions of Kilograas)

1985
1990
1995
3000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
237.1
235.6
186.6
166.1
135.3
136.6
136.6
142.3
148.4
154.9
161.8
163.5
164.9
166.0
166.6
166.6
166.6
166.6
166.6
166.6
166.6
CFC-12
363.8
440.8
429.5
296.8
256.9
204.8
172.6
165.0
163.0
167.8
174.9
182.4
190.4
198.8
201.5
203.1
204.4
204.8
204.8
204.8
204.8
204.8
204.8
204.8
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
202.5
184.6
62.1
59.7
48.0
49.5
51.1
52.8
54.6
56.4
58.4
60.5
62.8
62.8
62.8
62.8
62.8
62.8
62.8
62.8
62.8
62.8
62.8
14.3
15.7
13.9
6.5
4.9
3.8
3.7
3.8
4.0
4.1
4.3
4.5
4.7
4.8
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.7
6.9
7.3
6.0
4.7
3.3
2.1
2.0
1.9
2.0
2.0
2.1
2.2
2.3
2.3
2.3
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
CC14
87.4
104.6
94.0
41.9
39.5
28.4
29.6
30.7
32.0
33.3
34.8
36.3
37.9
39.5
39.5
39.5
39.5
39.5
39.5
39.5
39.5
39.5
39.5
39.5
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                  B-44
              EXHIBIT B-38
  95 Percent Reduction Scenario (1998)
Global Emissions (Hi 11 ions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
226.6
223.7
171.2
149.6
116.3
117.4
117.0
122.8
128.9
135.4
142.2
144.0
145.3
146.4
147.1
147.1
147.1
147.1
147.1
147.1
147.1
CFC-12
363.8
440.8
429.5
284.8
240.2
184.5
149.6
141.1
138.6
143.2
150.3
157.8
165.8
174.3
176.9
178.6
179.9
180.3
180.3
180.3
180.3
180.3
180.3
180.3
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
202.5
184.6
52.2
49.8
37.3
38.8
40.4
42.0
43.8
45.7
47.7
49.8
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
14.3
15.7
13.9
6.0
4.3
3.1
3.0
3.1
3.3
3.4
3.6
3.8
3.9
4.1
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.7
6.9
7.3
5.9
4.4
3.1
1.7
1.6
1.5
1.6
1.6
1.7
1.8
1.9
1.9
1.9
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
ecu
87.4
104.6
94.0
38.0
35.6
23.7
24.8
26.0
27.2
28.6
30.0
31.5
33.1
34.8
34.8
34.8
34.8
34.8
34.8
34.8
34.8
34.8
34.8
34.8
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                  B-45
              EXHIBIT B-39
  97 Percent Reduction Scenario (1998)
Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
222.3
219.0
165.0
142.9
108.7
109.7
109.2
114.9
121.1
127.5
134.4
136.1
137.5
138.6
139.2
139.2
139.2
139.2
139.2
139.2
139.2
CFC-12
363.8
440.8
429.5
280.0
233.5
176.3
140.3
131.6
128.8
133.4
140.5
148.0
156.0
164.5
167.1
168.8
170.1
170.5
170.5
170.5
170.5
170.5
170.5
170.5
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
202.5
184.6
48.3
45.9
33.0
34.5
36.1
37.7
39.5
41.4
43.4
45.5
47.7
47.7
47.7
47.7
47.7
47.7
47.7
47.7
47.7
47.7
47.7
14.3
15.7
13.9
5.8
4.0
2.8
2.7
2.8
3.0
3.1
3.3
3.5
3.7
3.8
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
4.7
6.9
7.3
5.9
4.4
2.9
1.5
1.4
1.3
1.4
1.5
1.5
1.6
1.7
1.7
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
CCL4
87.4
104.6
94.0
36.5
34.0
21.8
22.9
24.1
25.3
26.7
28.1
29.6
31.2
32.9
32.9
32.9
32.9
32.9
32.9
32.9
32.9
32.9
32.9
32.9
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271 .0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                  B-46
              EXHIBIT B-40
  100 Percent Reduction Scenario (1998)
Global Emissions (Hi 11 ions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
364.3
359.5
216.0
211.9
155.8
133.0
97.3
98.2
97.4
103.2
109.3
115.8
122.7
124.4
125.8
126.8
127.5
127.5
127.5
127.5
127.5
127.5
127.5
CFC-12
363.8
440.8
429.5
272.8
223.5
164.1
126.5
117.3
114.2
118.7
125.8
133.3
141.3
149.7
152.4
154.0
155.4
155.7
155.7
155.7
155.7
155.7
155.7
155.7
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
202.5
184.6
42.4
40.0
26.5
28.0
29.6
31.3
33.1
34.9
36.9
39.0
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
41.3
14.3
15.7
13.9
5.4
3.7
2.4
2.3
2.4
2.6
2.7
2.9
3.0
3.2
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
4.7
6.9
7.3
5.8
4.2
2.8
1.3
1.2
1.1
1.1
1.2
1.3
1.4
1.4
1.5
1.5
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
CC14
87.4
104.6
94.0
34.1
31.7
18.9
20.0
21.2
22.5
23.8
25.2
26.7
28.3
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
30.0
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                           B-47
                       EXHIBIT B-41





90 Percent Reduction with 100 Percent Participation (1998)





         Global Emissions (Millions of (Cilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
213.3
201.1
126.5
98.0
58.9
52.9
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
CFC-12
363.8
439.4
421.5
271.0
216.9
134.5
88.2
71.3
58.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.2
49.1
43.3
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
14.3
15.7
13.7
5.7
3.8
1.9
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
4.7
6.9
7.2
5.9
4.4
2.8
1.3
1.1
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
CCL4
87.4
104.1
91.6
34.7
29.4
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                           B-48
                       EXHIBIT B-42





95 Percent Reduction with 100 Percent Participation (1998)





         Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
202.2
188.7
109.0
79.2
37.4
31.2
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
CFC-12
363.8
439.4
421.5
258.5
199.6
111.8
62.4
44.5
31.0
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.2
38.9
33.2
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
14.3
15.7
13.7
5.2
3.2
1.1
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
4.7
6.9
7.2
5.7
4.1
2.5
.9
.7
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
ecu
87.4
104.1
91.6
30.7
25.3
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                           B-49
                       EXHIBIT B-43





97 Percent Reduction with 100 Percent Participation (1998)





         Global Emissions (Millions of Kilograas)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
197.8
183.7
102.0
71.7
28.9
22.5
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
CFC-12
363.8
439.4
421.5
253.5
192.6
102.7
52.1
33.8
19.9
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.2
34.8
29.1
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
14.3
15.7
13.7
5.0
2.9
.8
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
4.7
6.9
7.2
5.7
4.0
2.4
.7
.5
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
CC14
87.4
104.1
91.6
29.0
23.7
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                           B-50
                       EXHIBIT B-44
100 Percent Reduction uith 100 Percent Participation (1998)
         Global Emissions  (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201.4
180.2
28.7
23.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
13.7
4.7
2.5
.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
7.2
5.6
3.9
2.2
.5
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CC14
87.4
104.1
91 .6
26.6
21 .3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
738.1
866.4
992.9
1123.4
1271.0
1438.1
1627.0
1840.9
2082.8
2356.5
2666.1
3016.5
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
3412.9
H-1211
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                    B-51
                                 EXHIBIT  B-45





90 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation (1998)





                   Global  Emissions  (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
213.3
201.1
126.5
98.0
58.9
52.9
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
CFC-12
363.8
439.4
421.5
271.0
216.9
134.5
88.2
71.3
58.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.2
49.1
43.3
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
14.3
15.7
13.7
5.7
3.8
1.9
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1 .6
1.6
1.6
1 .6
1.6
1.6
1 .6
1.6
4.7
6.9
7.2
5.9
4.4
2.8
1.3
1 .1
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
CC14
87.4
104.1
91 .6
34.7
29.4
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
CH3CC13
813
641
660
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
.8
.3
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                    B-52
                                EXHIBIT B-46





95 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation (1998)





                   Global  Emissions  (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
202.2
188.7
109.0
79.2
37.4
31.2
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
CFC-12
363.8
439.4
421.5
258.5
199.6
111.8
62.4
44.5
31.0
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 (
150.5
201.4
180.2
38.9
33.2
11.6
11.6
11.6
11.6
11.6
11 .6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
:FC-114 CFC-115
14.3
15.7
13.7
5.2
3.2
1.1
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
.8
4.7
6.9
7.2
5.7
4.1
2.5
.9
.7
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
ecu
87.4
104.1
91.6
30.7
25.3
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
CH3CC13
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                    B-53
                                EXHIBIT B-47
97 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation (1998)





                   Global Enissions  (Millions of Kilogra«s)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
197.8
183.7
102.0
71.7
28.9
22.5
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
CFC-12
363
439
421
253
192
102
52
33
19
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
.8
.4
.5
.5
.6
.7
.1
.8
.9
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
201.4
180.2
34.8
29.1
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
14.3
15.7
13.7
5.0
2.9
.8
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
4.7
6.9
7.2
5.7
4.0
2.4
.7
.5
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
.3
CC14
87.4
104.1
91.6
29.0
23.7
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
CH3CC13
813
641
660
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
.8
.3
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1211
1
3
6
9
14
19
24
29
33
38
45
52
60
69
78
86
93
99
100
100
100
100
100
100
.4
.3
.2
.9
.8
.7
.2
.0
.6
.9
.0
.0
.2
.6
.7
.7
.9
.4
.2
.8
.8
.8
.8
.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                     B-54
                                 EXHIBIT B-48
100 Percent Reduction with CH3CCL3 Freeze and 100 Percent Participation (1998)





                   Global Emissions (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201.4
180.2
28.7
23.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
13.7
4.7
2.5
.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
7.2
5.6
3.9
2.2
.5
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CC14
87.4
104.1
91.6
26.6
21 .3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
35.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                                  B-55
                                              EXHIBIT B-49

   90 Percent Reduction with CH3CC13 Freeeze and 100 Percent Participation and 1:2 Substitution (1998)

                                Global Emissions  (Millions  of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-
278
362
351
213
201
126
98
58
52
44
44
44
44
44
44
44
44
44
44
44
44
44
44
44
11
.3
.6
.7
.3
.1
.5
.0
.9
.9
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
CFC-
363
439
421
271
216
134
88
71
58
55
55
55
55
55
55
55
55
55
55
55
55
55
55
55
12 HCFC-22 CFC-113 CFC-114 CFC-115
.8
.4
.5
.0
.9
.5
.2
.3
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
201.4
180.2
49.1
43.3
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
23.2
14.3
15.7
13.7
5.7
3.8
1.9
1 .6
1.6
1.6
1 .6
1.6
1.6
1 .6
1 .6
1.6
1.6
1.6
1.6
1.6
1 .6
1.6
1 .6
1 .6
1.6
4.7
6.9
7.2
5.9
4.4
2.8
1 .3
1.1
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
CCL4 CH3CCL3
87.4
104.1
91.6
34.7
29.4
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST '
0.0
40.4
161 .1
422.5
575.3
765.3
923.3
1085.7
1246.3
1423.0
1616.6
1835.6
2083.4
2363.8
2452.0
2507.1
2553.0
2576.1
2576.1
2576.1
2576.1
2576.1
2576.1
2576.1
*  Partially-halogenated chlorine-containing chemical substitutes (such  as  HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-56
                                               EXHIBIT B-50

 95 Percent Reduction with CH3CC13 Freeze  and  100 Percent Participation and 1:2 Substitution (1998)

                                 Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
202.2
188.7
109.0
79.2
37.4
31 .2
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
439.4
421.5
258.5
199.6
111.8
62.4
44.5
31.0
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
201.4
180.2
38.9
33.2
11.6
11.6
11.6
11.6
11.6
11 .6
11 .6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
14.3
15.7
13.7
5.2
3.2
1.1
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
4.7
6.9
7.2
5.7
4.1
2.5
0.9
0.7
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
CCL4 CH3CCL3
87.4
104.1
91 .6
30.7
25.3
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211 1
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
1-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST
0.0
40.4
161.1
434.3
590.2
785.4
945.6
1109.9
1270.9
1448.0
1641.6
1860.6
2108.4
2388.8
2477.0
2532.1
2578.0
2601.1
2601.1
2601.1
2601.1
2601 .1
2601.1
2601.1
*  Partially-halogenated chlorine-containing chemical substitutes (such as  HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                  B-57
                                              EXHIBIT B-51
   97 Percent Reduction uith CH3CC15  Freeze and  100 Percent Participation and 1:2 Substitution (1998)

                                Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
197.8
183.7
102.0
71.7
28.9
22.5
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
13.4
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
439.4
421.5
253.5
192.6
102.7
52.1
33.8
19.9
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
201 .4
180.2
34.8
29.1
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
7.0
14.3
15.7
13.7
5.0
2.9
0.8
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
4.7
6.9
7.2
5.7
4.0
2.4
0.7
0.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
CCL4 CH3CCL3
87.4
104.1
91.6
29.0
23.7
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3.
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST •
0.0
40.4
161 .1
439.0
596.2
793.5
954.5
1119.5
1280.8
1458.0
1651 .6
1870.6
2118.4
2398.8
2437.0
2542.1
2588.0
2611.1
2611 .1
2611.1
2611 .1
2611.1
2611 .1
2611.1
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-58
                                               EXHIBIT B-52

    100 Percent Reduction with CH3CC13 Freeze and 100 Percent  Participation and 1:2 Substitution (1998)

                                 Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
201 .4
180.2
28.7
23.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
15.7
13.7
4.7
2.5
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
6.9
7.2
5.6
3.9
2.2
0.5
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
104.1
91.6
26.6
21.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211 H-1301
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST *
0.0
40.4
161 .1
446.1
605.1
805.5
967.9
1133.9
1295.6
1473.1
1666.7
1885.6
2133.5
2413.8
2502.1
2557.2
2603.1
2626.2
2626.2
2626.2
2626.2
2626.2
2626.2
2626.2
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22, 123, 141b, 142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-59
                                               EXHIBIT B-53

    90  Percent  Reduction with  CH3CC13  Freeze and 100  Percent Participation and 1:5 Substitution  <1998)

                                 Global  Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-
278
362
351
213
201
126
98
58
52
44
44
44
44
44
44
44
44
44
44
44
44
44
44
44
11
.3
.6
.7
.3
.1
.5
.0
.9
.9
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
CFC-12 HCFC-22 CFC-1
363.8
439.4
421.5
271 .0
216.9
134.5
88.2
71.3
58.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150
201
180
49
43
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
13 CFC-1
.5
.4
.2
.1
.3
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
14
15
13
5
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
14 CFC-115
.3
.7
.7
.7
.8
.9
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
4.7
6.9
7.2
5.9
4.4
2.8
1.3
1 .1
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
CCL4 CH3CCL3
87.
104.
91 .
34.
29.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
10.
4
1
6
7
4
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
813
641
660
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
.8
.3
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1211
1 .
3.
6.
9.
14.
19.
24.
29.
33.
38.
45.
52.
60.
69.
78.
86.
93.
99.
100.
100.
100.
100.
100.
100.
4
3
2
9
8
7
2
0
6
9
0
0
2
6
7
7
9
4
2
8
8
8
8
8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST
0.0
16.2
64.4
169.0
230.1
306.1
369.3
434.3
498.5
569.2
646.6
734.2
833.4
945.5
980.8
1002.8
1021.2
1030.4
1030.4
1030.4
1030.4
1030.4
1030.4
1030.4
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-60
                                               EXHIBIT B-54
    95 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation  and  1:5 Substitution (1998)

                                 Global Emissions (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
202.2
188.7
109.0
79.2
37.4
31.2
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
439.4
421 .5
258.5
199.6
111.8
62.4
44.5
31 .0
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
201.4
180.2
38.9
33.2
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
14.3
15.7
13.7
5.2
3.2
1.1
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
4.7
6.9
7.2
5.7
4.1
2.5
0.9
0.7
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
CCL4 CH3CCL3
87.4
104.1
91.6
30.7
25.3
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211 I
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST *
0.0
16.2
64.4
173.7
236.1
314.2
378.2
443.9
508.4
579.2
656.6
744.2
843.4
955.5
990.8
1012.8
1031.2
1040.4
1040.4
1040.4
1040.4
1040.4
1040.4
1040.4
*  Partially-halogenated chlorine-containing chemical substitutes  (such as  HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-61
                                               EXHIBIT  B-55

    97 Percent  Reduction with CH3CC13 Freeze and 100  Percent  Participation and  1:5 Substitution (1998)

                                 Global  Emissions (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-
278
362
351
197
183
102
71
28
22
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
11
.3
.6
.7
.8
.7
.0
.7
.9
.5
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
CFC-12 HCFC-22 CFC-1
363.8
439.4
421.5
253.5
192.6
102.7
52.1
33.8
19.9
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150
201
180
34
29
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
13 CFC-114 CFC-115
.5
.4
.2
.8
.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14
15
13
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.3
.7
.7
.0
.9
.8
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
4.7
6.9
7.2
5.7
4.0
2.4
0.7
0.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
CCL4 CH3CCL3
87.4
104.1
91.6
29.0
23.7
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
813
641
660
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
.8
.3
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST *
0.0
16.2
64.4
175.6
238.5
317.4
381.8
447.8
512.3
583.2
660.6
748.2
847.4
959.5
994.8
1016.8
1035.2
1044.4
1044.4
1044.4
1044.4
1044.4
1044.4
1044.4
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-62
                                               EXHIBIT B 56

    100 Percent Reduction with CH3CC13 Freeze and  100  Percent Participation and 1:5 Substitution (1998)

                                 Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91 .6
60.4
16.0
9.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
439.4
421 .5
246.0
182.2
89.1
36.6
17.8
3.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
150.5
201.4
180.2
28.7
23.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
15.7
13.7
4.7
2.5
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
6.9
7.2
5.6
3.9
2.2
0.5
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
104.1
91.6
26.6
21.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211 H-1301
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5
SUBST *
0.0
16.2
64.4
178.4
242.0
322.2
387.1
453.6
518.2
589.2
666.7
754.3
853.4
965.5
1000.8
1022.9
1041 .2
1050.5
1050.5
1050.5
1050.5
1050.5
1050.5
1050.5
*  Partially-hatogenated chlorine-containing chemical substitutes  (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                  B-63
                                              EXHIBIT B-57

   90 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation and Post-2050 Growth and 1:2
                                           Substitution (1998)

                                Global Emissions  (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
213.3
201.1
126.5
98.0
58.9
52.9
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
44.5
CFC-12
363.8
439.4
421.5
271 .0
216.9
134.5
88.2
71.3
58.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
HCFC-
73
122
165
206
245
280
317
359
407
460
520
589
666
754
853
965
1092
1236
1398
1582
1790
2025
2292
2593
22 CFC-113 CFC-114 CFC-115
.8
.2
.4
.1
.4
.3
.8
.7
.0
.4
.9
.4
.9
.5
.6
.8
.7
.3
.8
.6
.5
.8
.0
.2
150
201
180
49
43
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
.5
.4
.2
.1
.3
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
14.3
15.7
13.7
5.7
3.8
1.9
1 .6
1.6
1.6
1 .6
1.6
1.6
1 .6
1.6
1.6
1 .6
1.6
1.6
1 .6
1.6
1 .6
1.6
1.6
1 .6
4.7
6.9
7.2
5.9
4.4
2.8
1.3
1.1
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
CCL4 CH3CCL3
87.4
104.1
91.6
34.7
29.4
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251 .8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27,4
31 .7
36.4
41.7
47.6
54.1
61.4
69.7
78.9
89.2
101.0
SUBST *
0.0
40.4
161.1
422.5
575.3
765.3
923.3
1085.7
1246.3
1423.0
1616.6
1835.6
2083.4
2363.8
2680.9
3039.8
3445.9
3905.3
4425.0
5013.0
5698.4
6431.2
7282.8
8246.4
*  Partially-halogenated chlorine-containing chemical substitutes (such  as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-64
                                               EXHIBIT B-58

                  95 Percent Reduction Hith CH3CC13 Freeze and 100 Percent Participation
                             and Post-2050 Growth and 1:2 Substitution (1998)

                                 Global Emissions (Hillions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
202.2
188.7
109.0
79.2
37.4
31.2
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
CFC-12
363.8
439.4
421.5
258.5
199.6
111.8
62.4
44.5
31.0
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.5
201.4
180.2
38.9
33.2
11.6
11.6
11.6
11 .6
11.6
11.6
11.6
11 .6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11 .6
11.6
11.6
14.3
15.7
13.7
5.2
3.2
1 .1
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
4.7
6.9
7.2
5.7
4.1
2.5
0.9
0.7
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
CCL4 CH3CCL3
87.4
104.1
91.6
30.7
25.3
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251 .8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61.4
69.7
78.9
89.2
101 .0
SUBST *
0.0
40.4
161.1
434.3
590.2
785.4
945.6
1109.9
1270.9
1448.0
1641.6
1860.6
2108.4
2388.8
2705.9
3064.8
3470.9
3930.3
4450.0
5038.0
5703.4
6456.2
7307.8
8271 .4
*  Partially-halogenated chlorine-containing  chemical  substitutes  (such  as  HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics  of  HCFC-22.

-------
                                                   B-65
                                               EXHIBIT  B-59

                  97 Percent  Reduction uith  CH3CC13  Freeze and  100  Percent Participation
                             and Post-2050 Growth  and 1:2  Substitution  (1998)

                                 Global Emissions  (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-
278
362
351
197
183
102
71
28
22
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
11
.3
.6
.7
.8
.7
.0
.7
.9
.5
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
CFC-
363
439
421
253
192
102
52
33
19
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
12
.8
.4
.5
.5
.6
.7
.1
.8
.9
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
.7
HCFC-
73
122
165
206
245
280
317
359
407
460
520
589
666
754
853
965
1092
1236
1398
1582
1790
2025
2292
2593
22 CFC-1
.8
.2
.4
.1
.4
.3
.8
.7
.0
.4
.9
.4
.9
.5
.6
.8
.7
.3
.8
.6
.5
.8
.0
.2
150
201
180
34
29
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
13 CFC-114 CFC-115
.5
.4
.2
.8
.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14
15
13
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.3
.7
.7
.0
.9
.8
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
4.7
6.9
7.2
5.7
4.0
2.4
0.7
0.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
CCL4 CH3CCL3
87.4
104.1
91.6
29.0
23.7
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.
3.
6.
9.
14.
19.
24.
29.
33.
38.
45.
52.
60.
69.
80.
92.
105.
119.
135.
153.
173.
196.
222.
251.
4
3
2
9
8
7
2
0
6
9
0
0
2
6
2
0
2
9
7
6
8
7
5
8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61 .4
69.7
78.9
89.2
101 .0
SUBST *
0.0
40.4
161.1
439.0
596.2
793.2
954.5
1119.5
1280.8
1458.0
1651.6
1870.6
2118.4
2398.8
2715.9
3074.8
3480.9
3940.3
4460.0
5048.0
5713.4
6466.2
7317.8
8281 .4
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-66
                                               EXHIBIT B 60
                  100 Percent  Reduction  with CH3CC13 Freeze and 100 Percent Participation
                             and Post-2050 Growth and 1:2 Substitution (1998)

                                 Global Emissions (Hi 11 ions  of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.5
201.4
180.2
28.7
23.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
15.7
13.7
4.7
2.5
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
6.9
7.2
5.6
3.9
2.2
0.5
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
104.1
91.6
26.6
21.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0-
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61.4
69.7
78.9
89.2
101.0
SUBST *
0.0
40.4
161.1
446.1
605.1
805.5
967.9
1133.9
1295.6
1473.1
1666.7
1885.6
2133.5
2413.8
2731.0
3089.9
3495.9
3955.3
4475.1
5063.1
5728.5
6481 .2
7332.9
8296.5
*  Partially-halogenated chlorine-containing chemical substitutes  (such  as  HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   8-67
                                               EXHIBIT  B-61

                  90  Percent  Reduction Hith  CH3CC13  Freeze and  100 Percent Participation
                             and  Post-2050 Growth  and 1:5 Substitution  (1998)

                                 Global  Emissions  (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-
278
362
351
213
201
126
98
58
52
44
44
44
44
44
44
44
44
44
44
44
44
44
44
44
11
.3
.6
.7
.3
.1
.5
.0
.9
.9
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
CFC-12
363.8
439.4
421.5
271 .0
216.9
134.5
88.2
71.3
58.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
55.6
HCFC-
73
122
165
206
245
280
317
359
407
460
520
589
666
754
853
965
1092
1236
1398
1582
1790
2025
2292
2593
22 CFC-1
.8
.2
.4
.1
.4
.3
.8
.7
.0
.4
.9
.4
.9
.5
.6
.8
.7
.3
.8
.6
.5
.8
.0
.2
150
201
180
49
43
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
23
13 CFC-114 CFC-115
.5
.4
.2
.1
.3
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
.2
14
15
13
5
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
.3
.7
.7
.7
.8
.9
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
.6
4.7
6.9
7.2
5.9
4.4
2.8
1.3
1 .1
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
CCL4 CH3CCL3
87.4
104.1
91.6
34.7
29.4
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
10.8
813
641
660
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
.8
.3
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1211
1
3
6
9
14
19
24
29
33
38
45
52
60
69
80
92
105
119
135
153
173
196
222
251
.4
.3
.2
.9
.8
.7
.2
.0
.6
.9
.0
.0
.2
.6
.2
.0
.2
.9
.7
.6
.8
.7
.5
.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61 .4
69.7
78.9
89.2
101 .0
SUBST *
0.0
16.2
64.4
169.0
230.1
306.1
369.3
434.3
498.5
569.2
646.6
734.2
833.4
945.5
1072.4
1215.9
1378.3
1562.1
1770.0
2005.2
2271 .4
2572.5
2913.1
3298.6
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-68
                                               EXHIBIT B-62

                  95 Percent Reduction uith CH3CC13 Freeze and 100 Percent Participation
                             and Post-2050 Growth and 1:5 Substitution (1998)

                                 Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
202.2
188.7
109.0
79.2
37.4
31.2
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
22.3
CFC-12
363.8
439.4
421.5
258.5
199.6
111.8
62.4
44.5
31.0
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
27.8
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.5
201.4
180.2
38.9
33.2
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
11.6
14.3
15.7
13.7
5.2
3.2
1.1
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
4.7
6.9
7.2
5.7
4.1
2.5
0.9
0.7
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
CCL4 CH3CCL3
87.4
104.1
91.6
30.7
25.3
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
5.4
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61.4
69.7
78.9
89.2
101.0
SUBST *
0.0
16.2
64.4
173.7
236.1
314.2
378.2
443.9
508.4
579.2
656.6
744.2
843.4
955.5
1082.4
1225.9
1388.3
1572.1
1780.0
2015.2
2281.4
2582.5
2923.1
3308.6
*  Partially-halogenated chlorine-containing  chemical  substitutes  (such  as  HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of  HCFC-22.

-------
                                                   B-69
                                               EXHIBIT  B-63

                 97 Percent  Reduction  with  CH3CC13  Freeze and  100 Percent Participation
                             and  Post-2050 Growth  and 1:5 Substitution (1998)

                                 Global  Emissions  (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-
278
362
351
197
183
102
71
28
22
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
11
.3
.6
.7
.8
.7
.0
.7
.9
.5
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
.4
CFC-12 HCFC-
363.8
439.4
421.5
253.5
192.6
102.7
52.1
33.8
19.9
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
16.7
73
122
165
206
245
280
317
359
407
460
520
589
666
754
853
965
1092
1236
1398
1582
1790
2025
2292
2593
22 CFC-1
.8
.2
.4
.1
.4
.3
.8
.7
.0
.4
.9
.4
.9
.5
.6
.8
.7
.3
.8
.6
.5
.8
.0
.2
150
201
180
34
29
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
13 CFC-1
.5
.4
.2
.8
.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14
15
13
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14 CFC-115
.3
.7
.7
.0
.9
.8
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
.5
4.7
6.9
7.2
5.7
4.0
2.4
0.7
0.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
CCL4 CH3CCL3
87.4
104.1
91.6
29.0
23.7
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
813
641
660
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
664
.8
.3
.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
H-1211
1
3
6
9
14
19
24
29
33
38
45
52
60
69
80
92
105
119
135
153
173
196
222
251
.4
.3
.2
.9
.8
.7
.2
.0
.6
.9
.0
.0
.2
.6
.2
.0
.2
.9
.7
.6
.8
.7
.5
.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41.7
47.6
54.1
61 .4
69.7
78.9
89.2
101.0
SUBST '
0.0
16.2
64.4
175.6
238.5
317.4
381 .8
447.8
512.3
583.2
660.6
748.2
847.4
959.5
1086.4
1229.9
1392.3
1576.1
1784.0
2019.2
2285.4
2586.5
2927.1
3312.6
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-70
                                               EXHIBIT B-64

                  100  Percent  Reduction  Hith CH3CC13 Freeze and 100 Percent Participation
                             and Post-2050 Growth and 1:5 Substitution  (1998)

                                 Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.
201.
180.
28.
23.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
5
4
2
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14.3
15.7
13.7
4.7
2.5
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
6.9
7.2
5.6
3.9
2.2
0.5
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
104.1
91.6
26.6
21.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41 .7
47.6
54.1
61.4
69.7
78.9
89.2
101 .0
SUBST *
0.0
16.2
64.4
178.4
242.0
322.2
387.1
453.6
518.2
589.2
666.7
754.3
853.4
965.5
1092.4
1235.9
1398.4
1582.1
1790.0
2025.2
2291 .4
2592.5
2933.1
3318.6
*  Partially-halogenated chlorine-containing chemical substitutes  (such as  HCFCs  22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                  B-71
                                              EXHIBIT B 65

                100 Percent Reduction uith CH3CC13 Freeze and 100 Percent Participation
                           and Post-2050 Growth and 1:2.5 Substitution (1998)

                                Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351 .7
191.1
176.2
91.6
60.4
16.0
9.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12 HCFC-22 CFC-113 CFC-114 CFC-115
363.8
439.4
421 .5
246.0
182.2
89.1
36.6
17.8
3.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1790.5
2025.8
2292.0
2593.2
150.5
201.4
180.2
28.7
23.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
15.7
13.7
4.7
2.5
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
6.9
7.2
5.6
3.9
2.2
0.5
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
104.1
91.6
26.6
21.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27,4
31.7
36.4
41.7
47.6
54.1
61 .4
69.7
78.9
89.2
101 .0
SUBST *
0.0
32.3
128.8
356.8
484.1
644.4
774.3
907.1
1036.5
1 1 78 . 4
1333.3
1508.5
1706.8
1931 .0
2184.8
2471.9
2796.7
3164.2
3580.0
4050.4
4582.8
5185.0
5866.3
6637.2
*  Partially-halogenated chlorine-containing chemical  substitutes (such  as  HCFCs  22,  123,  141b  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                                   B-72
                                               EXHIBIT  B-66

                 100 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation
                             and Post-2050 Growth  and 1:3  Substitution (1998)

                                 Global  Emissions  (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CFC-12
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
HCFC-22 CFC-113 CFC-114 CFC-115
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
853.6
965.8
1092.7
1236.3
1398.8
1582.6
1 790 . 5
2025.8
2292.0
2593.2
150.5
201.4
180.2
28.7
23.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
14.3
15.7
13.7
4.7
2.5
0.4
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4.7
6.9
7.2
5.6
3.9
2.2
0.5
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
CCL4 CH3CCL3
87.4
104.1
91.6
26.6
21 .3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211 H-1301
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
80.2
92.0
105.2
119.9
135.7
153.6
173.8
196.7
222.5
251.8
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
31.7
36.4
41 .7
47.6
54.1
61 .4
69.7
78.9
89.2
101 .0
SUBST *
0.0
26.9
107.4
297.4
403.4
537.0
645.2
755.9
863.7
982.0
1111.1
1257.1
1422.3
1609.2
1820.6
2059.9
2330.6
2636.9
2983.4
3375.4
3819.0
4320.8
4888.6
5531 .0
*  Partially-halogenated chlorine-containing chemical substitutes (such as HCFCs 22,  123,  141b,  142b)
modeled using the atmospheric characteristics of HCFC-22.

-------
                                     B-73
                                 EXHIBIT B-67





100 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation (1990)





                   Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
148.3
154.2
79.1
81.1
18.5
15.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
212.8
128.1
75.1
71.4
21.3
18.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113 CFC-114 CFC-115
150.5
17.3
24.7
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
14.3
5.1
3.0
.6
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
4.7
5.5
3.8
2.9
1 .9
.4
.2
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CCL4
87.4
21.4
26.1
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CCL3
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-13C
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                     B-74








                                 EXHIBIT B-68





100 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation  (1993)





                   Global Emissions (Millions of  Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
171.8
169.4
95.5
70.6
17.8
11.9
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
439.4
218.5
167.9
97.2
38.7
21 .0
4.2
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201.4
24.7
28.7
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
5.0
3.1
.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
5.2
4.0
2.6
.5
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CC14
87.4
104.1
26.1
26.6
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
641 .3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                     B-75
                                 EXHIBIT  B-69





100 Percent Reduction with  CH3CC13 Freeze and 100  Percent  Participation  (1996)





                   Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
181 .6
169.2
83.7
20.2
14.7
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
439.4
421 .5
178.4
176.6
71.8
23.8
16.2
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201 .4
180.2
28.7
23.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
13.7
3.1
2.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
7.2
4.9
3.5
1.8
.4
.2
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CC14
87.4
104.1
91.6
26.6
21.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                     B-76








                                 EXHIBIT B-70





100 Percent Reduction with CH3CC13 Freeze and 100 Percent  Participation (1998)





                   Global Emissions (Millions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
191.1
176.2
91.6
60.4
16.0
9.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
439.4
421.5
246.0
182.2
89.1
36.6
17.8
3.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201 .4
180.2
28.7
23.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
13.7
4.7
2.5
.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
7.2
5.6
3.9
2.2
.5
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CC14
87.4
104.1
91.6
26.6
21.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1 .4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11 .3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                     B-77









                                 EXHIBIT B-71





100 Percent Reduction with CH3CC13 Freeze and  100 Percent  Participation (2003)





                   Global Emissions (Millions  of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351 .7
368.7
197.7
172.1
81.2
58.2
13.7
9.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-
363
439
421
446
259
174
86
33
16
3














12
.8
.4
.5
.6
.5
.0
.6
.2
.9
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201.4
180.2
191.5
23.0
23.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
13.7
13.2
4.1
2.4
.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
7.2
7.6
5.5
3.5
2.1
.4
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CC14
87.4
104.1
91.6
91 .6
21.3
21.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CC13
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
                                     B-78








                                 EXHIBIT B-72





100 Percent Reduction with CH3CC13 Freeze and 100 Percent Participation (2008)





                   Global Emissions (Hi 11 ions of Kilograms)

1985
1990
1995
2000
2005
2010
2015
2020
2025
2030
2035
2040
2045
2050
2055
2060
2065
2070
2075
2080
2085
2090
2095
2100
CFC-11
278.3
362.6
351.7
368.7
375.3
193.6
161.7
79.0
55.8
13.7
9.5
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-12
363.8
439.4
421.5
446.6
460.0
251.3
171.5
83.2
32.4
16.9
3.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
HCFC-22
73.8
122.2
165.4
206.1
245.4
280.3
317.8
359.7
407.0
460.4
520.9
589.4
666.9
754.5
815.1
852.2
875.5
879.1
879.1
879.1
879.1
879.1
879.1
879.1
CFC-113
150.5
201.4
180.2
191.5
185.8
23.0
23.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CFC-114
14.3
15.7
13.7
13.2
12.7
4.0
2.4
.4
.0
.0
.0
.0
.0
.0
.0
.0
.0
,0
.0
.0
.0
.0
.0
.0
CFC-115
4.7
6.9
7.2
7.6
7.5
5.1
3.4
2.1
.4
.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CCL4
87.4
104.1
91.6
91.6
86.3
21.3
21.3
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
.0
CH3CCL3
813.8
641.3
660.9
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
664.0
H-1211
1.4
3.3
6.2
9.9
14.8
19.7
24.2
29.0
33.6
38.9
45.0
52.0
60.2
69.6
78.7
86.7
93.9
99.4
100.2
100.8
100.8
100.8
100.8
100.8
H-1301
2.1
3.8
5.0
5.8
6.9
8.4
9.9
11.3
13.1
15.1
17.3
20.1
23.4
27.4
30.5
33.1
35.3
37.3
38.8
39.6
40.3
40.5
40.5
40.5

-------
APPENDIX C

-------
       APPENDIX C




OZONE DEPLETION ESTIMATES

-------
                                      C-2




      This appendix presents estimates of ozone depletion for several emission




 and trace gas scenarios.   The  model  used to  estimate ozone depletion is




 described in Connell  (1986)  and  EPA  (1987).   In light of the recent findings




 of the  Ozone Trends Panel  (1988),  ozone  depletion estimates based on results




 from 1-D  models  are called into  question.  Consequently,  the ozone depletion




 estimates presented here may be  considerable  underestimates of potential near




 term depletion.





      Exhibit C-l displays  estimated  ozone depletion  for  the following three




 scenarios:   No Controls; Protocol; and True Global Freeze.   The No Controls




 scenario  assumes that compound use will  grow  at an annual  average rate  of 2.8




 percent per  year through 2050, followed  by no  growth.  As  shown in the




 exhibit,  such unconstrained  growth is expected to  lead to  significant




 depletion.   The Protocol and True Global Freeze scenarios  are  estimated  to




 result  in much less depletion, although  as is  indicated in  the  exhibit by the




 arrows, the values for these cases may be underestimated.   The  Protocol




 scenario  has the following participation assumptions:  U.S. participation; 94




 percent of other developed nations;  and  65 percent of developing nations.  The




 True Global Freeze scenario  assumes  that all chlorine-containing compounds are




 frozen in 1989 at their 1986 levels,  and that  100 percent global participation




 is achieved.




     The ozone depletion estimates are influenced not only by emissions of




chlorine-containing compounds, but also by the  future concentrations of key




greenhouse gases:  carbon dioxide (C02);  nitrous oxide (N20); and methane




 (CH4).  Although the chlorine concentrations in the Protocol and True Global




Freeze scenarios are increasing through 2100,  the ozone depletion expected

-------
                                     C-3




from these scenarios is declining by 2100 due to increasing concentrations of




these greenhouse gases, and their associated global warming.   If the




concentrations of these gases are lower than currently expected, either due to




less than expected growth in emissions or due to international agreements to




limit emissions in order to reduce future levels of greenhouse warming, then




the expected amount of ozone depletion would be higher than the levels shown




in Exhibit C-l.




     Exhibit C-2 shows estimates of ozone depletion with alternative




assumptions about future concentrations of the greenhouse gases.  The Low




Trace Gas Scenario assumes that concentrations grow more slowly than currently




expected.  The 2"C Scenario assumes that the greenhouse gas concentrations




will be controlled sufficiently so that equilibrium global warming is limited




to 2°C by 2075.  As shown in the exhibit, the alternative trace gas




assumptions have a significant influence on the estimates of ozone depletion




over the long term.

-------
                                       C-4

                                  EXHIBIT C-l

             SIMtTLATED GLOBAL AVERAGE TOTAL COLUMN OZONE DEPLETION:
                 NO CONTROLS; PROTOCOL; AND TRUE  GLOBAL FREEZE
                                                        True Global Freeze
            -10.0
            -20.0 -
       •a
       •§
       3
           -50.0
            -30.0 -
           -40.0 -
              1985
                       2005
                                 2025
                                          2045
                                                    2065
                                                             2085
Assumptions:

No Controls:    Compound use grows at an average annual rate of  2.8  percent
                from 1985 to 2050, with no growth thereafter.

Protocol:       U.S.  participation;  94 percent participation in  other  developed
                nations; 65 percent participation in developing  nations.   Use
                of compounds not covered by the Protocol grows at  the  rates in
                the No Controls scenario.   Growth rates among non-participants
                are reduced to 37.5 percent (developed nations)  and  50 percent
                (developing nations) of their baseline values.

True Global Freeze:   The use of all chlorine-containing compounds is  frozen at
                1986 levels starting in 1990, and 100 percent participation is
                achieved worldwide.

Other Trace Gases:   CH4 grows at 0.017 ppm/year; N20 grows at 0.2
                percent/year; C02 grows at the 50th percentile rate  reported by
                the NAS (about 0.6 percent/year).
Arrows indicate  that ozone depletion estimates may be underestimated.

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                                     C-5

                                 EXHIBIT C-2

            SIMULATED GLOBAL AVERAGE TOTAL COLUMN OZONE DEPLETION:
           PROTOCOL SCENARIO WITH ALTERNATIVE TRACE GAS ASSUMPTIONS
                •7.0
                  1965
                         2005
                                 2025
                                         2045
                                                 2065
                                                         2085
Assumptions:
Protocol: U.S. participation; 94 percent participation in other developed
          nations; 65 percent participation in developing nations.  Use of
          compounds not covered by the Protocol grows at the rates in the No
          Controls scenario.  Growth rates among non-participants are reduced
          to 37.5 percent  (developed nations) and 50 percent (developing
          nations) of their baseline values.  Compound use assumed constant
          after 2050.

Other Trace Gases:

       o   Base Scenario:  CH4 grows at 0.017 ppm/year; N20 grows at 0.2
           percent/year; C02 grows at the 50th percentile rate reported by the
           NAS (about 0.6 percent/year).

       o   Low Scenario:  CH4 grows at 0.01275 ppm/year (75 percent of the
           base scenario value); N20 grows at 0.15 percent/year; C02 grows at
           the 25th percentile rate reported by NAS (about 0.4 percent/year).

       o   2°C Wanning Limited:  Assuming a 3°C climate sensitivity to doubled
           C02, trace gas growth is limited so that projected equilibrium
           warming equals 2°C by 2075.  Average rates of growth from 1985 to
           2075 are:  CH4:  0.24 percent/year; N20:  0.06 percent/year; C02:
           0.15 percent/year.

Arrows indicate that ozone depletion estimates may be underestimated.

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