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What's Happening from Environmental Building News
March 1, 2009
U.S. On Track with HCFC Phaseout
Under the Montreal Protocol, as the 1987 international treaty to protect the stratospheric ozone layer is known, signatory countries agreed to phase out chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and certain other ozone-depleting substances. In the original treaty and subsequent amendments, the cap in HCFC consumption for developed countries was based on the following formula: 2.8% of the country’s 1989 CFC consumption plus 100% of the country’s 1989 HCFC consumption. Because these chemicals vary in their ozone-depletion potential (ODP), these calculations are based on weighted ODP values....
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