council direct march air qualiti standard nitrogen dioxid eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe programm action european commun environ provid prioriti measur nitrogen dioxid noxious regard current state knowledg effect human health environ insuffici technic scientif inform enabl council lai specif standard environ gener adopt limit valu protect human health contribut protect environ discrep provis applic drawn member state regard nitrogen dioxid air give rise unequ condit competit consequ directli affect function common market approxim law prescrib articl treati carri area basic task commun promot commun harmoni develop econom activ continu balanc expans inconceiv attack pollut nuisanc improv qualiti life protect environ treati provid power recours articl treati order protect human health environ set nitrogen dioxid limit exceed territori member state period base result work carri world health organ regard dose effect relationship establish pollut measur compli limit zone member state allow temporari derog condit forward commiss plan gradual improv qualiti air zone expect council shortli establish legal act enabl member state oj oj oj oj oj oj impos significantli lower limit valu exhaust gase motor vehicl measur pursuant direct econom feasibl compat balanc develop nitrogen dioxid precursor format photochem oxid harm man environ prevent action reduc format establish measur station monitor complianc limit nitrogen dioxid desir station measur nitric oxid intermediari step format nitrogen dioxid view exist method analysi member state permit condit method analysi refer method laid direct addit limit provid guid valu improv protect human health contribut long term protect environ subsequ refer method analysi refer direct desir light technic scientif progress area order facilit implement work end procedur set establish close cooper member state commiss committe adapt scientif technic progress adopt direct articl purpos direct fix limit annex nitrogen dioxid atmospher specif protect human be effect nitrogen dioxid environ lai guid valu annex ii nitrogen dioxid atmospher order improv protect human health contribut long term protect environ direct appli exposur work insid build articl purpos direct quot limit quot mean concentr nitrogen dioxid defin tabl annex exceed territori member state period condit laid articl quot guid valu quot mean concentr nitrogen dioxid annex ii consid period intend serv refer point establish specif scheme zone determin member state articl member state measur ensur juli concentr nitrogen dioxid atmospher measur accord annex iii greater limit annex circumst nitrogen dioxid concentr atmospher zone measur exce limit annex juli member state concern inform commiss thereof juli forward plan gradual improv qualiti air zone commiss plan drawn basi relev inform natur origin develop pollut describ measur procedur implement implement member state concern measur procedur aim reduc nitrogen dioxid concentr atmospher zone valu exceed limit annex rapidli januari latest articl zone member state concern consid limit prevent forese increas pollut nitrogen dioxid wake urban industri develop fix valu lower limit annex zone member state concern consid afford special environment protect fix valu gener lower guid valu annex ii articl member state time fix valu stringent laid direct articl member state establish measur station suppli data applic direct accord specif annex iii zone limit exceed exceed zone refer articl station measur concentr nitric oxid articl juli member state inform commiss month end decemb annual refer period instanc limit laid annex exceed concentr record member state notifi commiss year end annual refer period reason instanc measur deal addit member state inform commiss request concentr measur limit valu deadlin timet laid measur zone refer articl inform made public articl commiss publish period summari report applic direct articl applic measur pursuant direct lead signific deterior qualiti air zone urban area level pollut nitrogen dioxid time implement direct low relat limit laid annex articl appli direct member state refer method analysi refer annex iv method analysi commiss shown equival refer method articl member state intend fix region border member state valu concentr nitrogen dioxid atmospher accord articl hold prior consult member state concern commiss inform attend consult limit annex valu refer articl provid valu subject consult accord paragraph exceed signific pollut origin origin member state member state concern hold consult view remedi situat commiss inform attend consult articl amend adapt specif annex iv technic progress adopt accord procedur articl amend alter directli indirectli limit laid annex articl purpos articl committe adapt direct scientif technic progress hereinaft call quot committe quot set compos repres member state commiss repres chairman committe adopt rule procedur articl procedur laid articl matter refer committe chairman initi request repres member state commiss repres submit draft measur committe committe give opinion draft time limit set chairman regard urgenc matter decis major vote vote member state weight provid articl treati chairman vote commiss adopt propos measur consist opinion committe propos measur consist opinion committe opinion deliv commiss delai submit council propos measur council decid qualifi major month propos submit council act propos measur adopt commiss articl member state bring forc law regul administr provis compli direct januari latest forthwith inform commiss thereof member state commun commiss text provis nation law adopt field cover direct articl direct address member state brussel march council presid biondi annex limit nitrogen dioxid limit express volum standard condit temperatur pressur kpa gt pic file quot quot gt annex ii guid valu nitrogen dioxid limit express volum standard condit temperatur pressur kpa gt pic file quot quot gt annex iii monitor concentr nitrogen dioxid purpos measur concentr environ assess individu risk exposur excess limit close measur point chosen member state site risk greatest separ case consid zone predominantli affect pollut motor vehicl limit vicin road carri heavi traffic extens zone discharg fix sourc make signific contribut pollut case measur point select cover exampl main type zone predominantli affect pollut motor vehicl quot canyon quot street carri heavi traffic major intersect concentr paragraph highest number station set zone defin paragraph reflect extent pollut zone uneven spatial distribut pollut choic site exclud quot canyon quot street carri heavi traffic major intersect defin paragraph danger limit exceed ow substanti pollut fix sourc combust final read instrument process hourli hour calcul accord provis annex order enabl check made data store limit exceed period report commiss drawn provid articl limit exceed measur call articl annex iv refer method analysi purpos direct refer method analysi determin nitrogen oxid chemiluminesc method iso standard di method languag version publish iso version certifi commiss line consid authent measur method point consider sampl head distanc build order avoid screen effect sampl line pipe connect inert materi glass ptfe stainless steel alter concentr sampl line sampl head instrument short time ga volum sampl pass sampl line exce second sampl head entri protect rain insect pre filter select maintain regular clean minim influenc concentr condens sampl line avoid sampl line clean regularli take local condit account sampl influenc ga discharg instrument discharg calibr system sampl sampl head influenc adjoin instal air condit data transmiss equip precaut prevent temperatur variat produc excess percentag error measur instrument calibr regularli sampl line air tight flow rate inspect regularli