council decis march conclus european commun protocol convent long rang transboundari air pollut reduct sulphur emiss ec council european union regard treati establish european commun articl conjunct sentenc articl subparagraph articl thereof regard propos commiss regard opinion european parliament commun sign june protocol convent long rate transboundari air pollut reduct sulphur emiss hereinaft protocol protocol seek establish ceil sulphur emiss contract parti convent measur envisag protocol contribut achiev object commun polici environ commun member state cooper framework respect compet countri compet intern organis consequ commun approv protocol adopt decis articl protocol convent long rang transboundari air pollut reduct sulphur emiss sign june approv behalf commun text protocol attach decis declar deposit instrument approv european commun state ceil emiss weight averag percentag european commun exce sum oblig member state european union ratifi protocol stress member state reduc emiss accord emiss ceil set annex ii protocol line relev commun legisl articl presid council authoris design person empow deposit instrument approv declar refer articl secretari gener unit nation accord articl protocol articl decis publish offici journal european commun brussel march council presid meacher oj oj