council resolut octob limit chlorofluorocarbon halon council european commun establish continu emiss chlorofluorocarbon halon current level signific damag ozon layer intern consensu signific reduct product consumpt substanc decis eec eec provid control limit effect cover substanc cfc cfc commun member state sign march vienna convent protect ozon layer commun member state sign septemb montreal protocol substanc deplet ozon layer council adopt decis eec conclus vienna convent montreal protocol council adopt regul eec chlorofluorocarbon halon deplet ozon layer recent scientif studi confirm deplet ozon layer occur observ due wholli part increas atmospher abund trace gase chlorofluorocarbon import achiev greatest feasibl substitut chlorofluorocarbon halon area number member state reach voluntari agreement manufactur aerosol progress reduct view elimin chlorofluorocarbon product stress addit regul eec urgent action order limit measur mention chlorofluorocarbon halon product equip process underlin commun member state encourag research climat chang ozon layer consult industri altern environment sound product equip process invit commiss cooper member state initi discuss voluntari agreement commun level industri concern feasibl substitut chlorofluorocarbon halon product aerosol equip process substitut feasibl reduc substanc total amount substanc reduc maximum extent invit commiss report progress made invit commiss cooper member state initi discuss industri concern view conclud voluntari agreement common commun label chlorofluorocarbon free product stress great import reduct chlorofluorocarbon halon product equip process result nation commun measur mention offset increas substanc increas part commun safeguard protect human health environ request commiss evalu annual impact reduct submit decemb latest regular interv report council commiss submit propos council luxembourg octob council presid papandr oj oj oj oj