Coron, Palawan – Soon, the imperilled ozone layer will be all smiles on the Philippines — that is, if figures from the Department of Environment and Natural Resources (DENR) are to be the basis. La...
“All [substances] have been phased out according to the commitment period,” DENR-EMB-POD Program Manager Ella Deocadiz said in her presentation during the recent three-day Media Workshop on Ozone and Climate Linkages spearheaded by DENR here.“Currently, the only remaining substance for phase-out in the Philippines is hydrochlorofluorocarbons (HCFC).”
Substances that have been phased out as of January 1, 2010 — mostly ahead of target schedule — are chlorofluorocarbons (CFCs), halons, carbon tetrachlorides (CTCs), methyl chloroforms (MCs), non-quarantine and pre-shipment methyl bromides (MBs). These substances are chlorinated, fluorinated or brominated hydrocarbons, which can react with ozone molecules in the stratosphere and deplete the protective layer. They are thus called ozone-depleting substances (ODS).
By “commitment period,” Deocadiz was referring to the target date of phase out of the said substances, as committed by the Philippines to the Montreal Protocol (MP), where the country is one of the “developing country” signatories. MP identified and started to regulate these substances when the global agreement was drawn up in September 1987.