council decis decemb conclus amend montreal protocol substanc deplet ozon layer ec council european union regard treati establish european commun articl conjunct articl subparagraph thereof regard propos commiss regard opinion european parliament regard opinion econom social committe commun view respons environ decis eec parti vienna convent protect ozon layer montreal protocol substanc deplet ozon layer decis eec approv amend protocol recent scientif evid adequ protect ozon layer higher degre control chlorofluorocarbon halon carbon tetrachlorid trichloroethan requir provid montreal protocol amend evid addit control methyl bromid hydrobromofluorocarbon hydrochlorofluorocarbon amend adjust montreal protocol implement control adopt copenhagen novemb amend approv end commun approv amend commun member state approv amend montreal protocol provis carri commun member state approv order oblig amend appropri carri member state approv adopt decis articl amend montreal protocol substanc deplet ozon layer approv behalf commun text amend attach decis articl presid council deposit act approv amend behalf commun secretari gener unit nation accord articl vienna convent read conjunct articl amend montreal protocol articl decis address member state brussel decemb council presid de gallan oj oj oj oj oj