council direct ec april relat limit valu sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air council european union regard treati establish european commun articl thereof regard propos commiss regard opinion econom social committe act accord procedur laid articl treati basi principl enshrin articl treati european commun programm polici action relat environ sustain develop environ action programm envisag amend legisl air pollut programm recommend establish long term air qualiti object articl treati health protect requir form constitu part commun polici articl treati activ commun includ contribut attain high level health protect pursuant articl council direct ec septemb ambient air qualiti assess manag council adopt legisl provid paragraph provis laid paragraph articl limit valu laid direct minimum requir accord articl treati member state maintain introduc stringent protect measur stricter limit valu introduc protect health vulner categori popul children hospit patient member state requir limit valu attain date laid direct ecosystem protect advers effect sulphur dioxid veget protect advers effect oxid nitrogen type particl harm effect human health evid risk human health exposur man made particul matter higher risk exposur natur occur particl ambient air direct ec requir action plan develop zone concentr pollut ambient air exce limit valu temporari margin toler applic order ensur complianc limit valu date date laid relat particul matter action plan reduct strategi aim reduc concentr fine particl part total reduct concentr particul matter direct ec numer valu limit valu alert threshold base find work carri intern scientif group activ field commiss account recent scientif research data epidemiolog environment field concern recent advanc metrolog examin element limit valu alert threshold base order facilit review direct commiss member state encourag research effect pollut refer sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead standardis accur measur techniqu common criteria locat measur station import element assess ambient air qualiti view obtain compar inform commun accord articl direct ec amend adapt scientif technic progress relat sole criteria techniqu assess concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead detail arrang forward inform commiss effect modifi limit valu alert threshold directli indirectli date inform concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air readili public adopt direct articl object object direct establish limit valu alert threshold concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air intend avoid prevent reduc harm effect human health environ assess concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air basi common method criteria obtain adequ inform concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air ensur made public maintain ambient air qualiti good improv case respect sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead articl definit purpos direct quot ambient air quot outdoor air tropospher exclud work place quot pollut quot substanc introduc directli indirectli man ambient air harm effect human health environ quot level quot concentr pollut ambient air deposit thereof surfac time quot assess quot method measur calcul predict estim level pollut ambient air quot limit quot level fix basi scientif knowledg aim avoid prevent reduc harm effect human health environ attain period exceed attain quot alert threshold quot level risk human health exposur step member state laid direct ec quot margin toler quot percentag limit exceed subject condit laid direct ec quot zone quot part territori delimit member state quot agglomer quot zone popul concentr excess inhabit popul concentr inhabit popul densiti km member state justifi ambient air qualiti assess manag quot oxid nitrogen quot sum nitric oxid nitrogen dioxid ad part billion express nitrogen dioxid microgram cubic meter quot pm quot particul matter pass size select inlet effici cut μm aerodynam diamet quot pm quot particul matter pass size select inlet effici cut μm aerodynam diamet quot upper assess threshold quot level annex combin measur model techniqu assess ambient air qualiti accord articl direct ec quot lower assess threshold quot level annex model object estim techniqu assess ambient air qualiti accord articl direct ec quot natur event quot volcan erupt seismic activ geotherm activ wild land fire high wind event atmospher resuspens transport natur particl dry region quot fix measur quot measur accord articl direct ec articl sulphur dioxid member state measur ensur concentr sulphur dioxid ambient air assess accord articl exce limit valu laid section annex date margin toler laid section annex appli accord articl direct ec alert threshold concentr sulphur dioxid ambient air laid section ii annex order assist commiss prepar report provid articl decemb member state practic record data concentr sulphur dioxid averag ten minut measur station select repres air qualiti inhabit area close sourc hourli concentr measur time data suppli hourli concentr accord articl direct ec member state report commiss select measur station number ten minut concentr exceed μg number dai calendar year occur number dai hourli concentr sulphur dioxid simultan exceed μg maximum ten minut concentr record member state design zone agglomer limit valu sulphur dioxid laid section annex exceed ow concentr sulphur dioxid ambient air due natur sourc member state send commiss list zone agglomer inform concentr sourc sulphur dioxid inform commiss accord articl direct ec member state provid justif demonstr exceed due natur sourc zone agglomer member state oblig implement action plan accord articl direct ec limit valu laid section annex exceed ow man made emiss articl nitrogen dioxid oxid nitrogen member state measur ensur concentr nitrogen dioxid applic oxid nitrogen ambient air assess accord articl exce limit valu laid section annex ii date margin toler laid section annex ii appli accord articl direct ec alert threshold concentr nitrogen dioxid ambient air laid section ii annex ii articl particul matter member state measur ensur concentr pm ambient air assess accord articl exce limit valu laid section annex iii date margin toler laid section annex iii appli accord articl direct ec member state ensur measur station suppli data concentr pm instal oper member state choos number site station pm measur repres concentr pm member state sampl point pm locat sampl point pm month end year member state send commiss arithmet median nineti eighth percentil maximum concentr calcul measur pm twenti hour year nineti eighth percentil calcul accord procedur laid section annex council decis ec januari establish reciproc exchang inform data network individu station measur ambient air pollut member state action plan pm prepar accord articl direct ec gener strategi decreas concentr pm aim reduc concentr pm limit valu pm laid section annex iii exceed ow concentr pm ambient air due natur event result concentr significantli excess normal background level natur sourc member state inform commiss accord articl direct ec provid justif demonstr exceed due natur event case member state oblig implement action plan accord articl direct ec limit valu laid section annex iii exceed ow natur event member state design zone agglomer limit valu pm laid section annex iii exceed ow concentr pm ambient air due resuspens particul winter sand road member state send commiss list zone agglomer inform concentr sourc pm inform commiss accord articl direct ec member state provid justif demonstr exceed due resuspend particul reason measur lower concentr zone agglomer member state oblig implement action plan accord articl direct ec limit valu laid section annex iii exceed ow pm level caus winter road sand articl lead member state measur ensur concentr lead ambient air assess accord articl exce limit valu laid section annex iv date margin toler laid section annex iv appli accord articl direct ec articl assess concentr upper lower assess threshold sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead purpos articl direct ec laid section annex classif zone agglomer purpos articl review year accord procedur laid section ii annex classif review earlier event signific activ relev ambient concentr sulphur dioxid nitrogen dioxid relev oxid nitrogen particul matter lead criteria determin locat sampl point measur sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air list annex vi minimum number sampl point fix measur concentr relev pollut laid annex vii instal zone agglomer measur requir fix measur sole sourc data concentr zone agglomer inform fix measur station supplement inform sourc emiss inventori indic measur method air qualiti model number fix measur station instal spatial resolut techniqu suffici concentr air pollut establish accord section annex vi section annex viii zone agglomer measur requir model object estim techniqu refer method analysi sulphur dioxid nitrogen dioxid oxid nitrogen sampl analysi lead laid section iii annex ix refer method sampl measur pm laid section iv annex ix provision refer method sampl measur pm laid section annex ix refer techniqu air qualiti model laid section vi annex ix date member state inform commiss method preliminari assess air qualiti articl direct ec eighteen month entri forc direct amend adapt articl annex ix scientif technic progress adopt accord procedur laid articl direct ec articl public inform member state ensur date inform ambient concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead routin made public organis environment organis consum organis organis repres interest sensit popul relev health care bodi mean broadcast media press inform screen comput network servic inform ambient concentr sulphur dioxid nitrogen dioxid particul matter updat daili basi case hourli valu sulphur dioxid nitrogen dioxid practic inform updat hourli basi inform ambient concentr lead updat monthli basi inform exceed concentr limit valu alert threshold averag period laid annex iv provid short assess relat limit valu alert threshold inform effect health make plan programm public articl direct ec includ plan programm refer articl direct member state make organis refer paragraph alert threshold laid annex ii exceed detail made public accord articl direct ec includ item list section iii annex question inform made public organis paragraph clear comprehens access articl repeal transit arrang council direct eec juli air qualiti limit valu guid valu sulphur dioxid suspend particul repeal effect juli articl direct eec annex iiib iv thereto repeal effect januari council direct eec decemb limit lead air repeal effect juli articl direct eec repeal effect januari council direct eec march air qualiti standard nitrogen dioxid repeal effect juli articl indent indent direct eec annex thereto repeal effect januari juli member state emploi measur station method air qualiti assess compli direct assess concentr sulphur dioxid nitrogen dioxid lead ambient air obtain data purpos demonstr complianc limit valu laid direct eec eec eec time limit valu laid direct ceas appli juli member state emploi measur station method air qualiti assess compli direct pm assess concentr suspend particul matter purpos demonstr complianc limit valu total suspend particul laid annex iv direct eec purpos demonstr complianc data collect multipli factor member state inform commiss exceed limit valu laid direct eec eec eec valu record reason record instanc measur prevent recurr month end year accord procedur laid articl direct ec time limit valu laid direct ceas appli zone member state consid limit prevent forese increas pollut sulphur dioxid oxid nitrogen suspend particul matter continu guid valu protect ecosystem laid annex ii direct eec annex ii direct eec articl report review decemb commiss submit european parliament council report base experi acquir applic direct result recent scientif research effect human health ecosystem exposur sulphur dioxid nitrogen dioxid oxid nitrogen fraction particul matter lead technolog develop includ progress achiev method measur assess concentr particul matter ambient air deposit particul matter lead surfac view maintain high level protect human health environ take account experi acquir applic direct member state includ condit laid annex vi measur carri aforement report accompani propos amend direct commiss examin limit valu stage pm view make mandatori confirm alter limit valu stage stage addit commiss give attent set limit valu pm fraction particul matter commiss examin annual limit protect human health nitrogen dioxid make propos confirm modifi examin hourli limit nitrogen dioxid light world health organis guidelin limit confirm alter commiss alert threshold set consist pollut direct pm pm fraction particul matter articl penalti member state determin penalti applic breach nation provis adopt pursuant direct penalti effect proportion dissuas articl implement member state bring forc law regul administr provis compli direct juli forthwith inform commiss thereof member state adopt measur refer direct accompani refer occas offici public method make refer laid member state member state commun commiss text main provis nation law adopt field cover direct articl entri forc direct enter forc twentieth dai public offici journal european commun articl addresse direct address member state luxembourg april council presid müller oj oj opinion european parliament oj council common posit septemb oj decis european parliament januari oj oj oj oj oj oj oj annex limit valu alert threshold sulphur dioxid limit valu sulphur dioxid limit valu express μg volum standardis temperatur pressur kpa gt tabl gt ii alert threshold sulphur dioxid μg measur consecut hour locat repres air qualiti km entir zone agglomer whichev smaller iii minimum detail made public alert threshold sulphur dioxid exceed detail made public includ date hour place occurr reason occurr forecast concentr improv stabilis deterior reason geograph area concern durat occur type popul potenti sensit occurr precaut sensit popul concern annex ii limit valu nitrogen dioxid oxid nitrogen nox alert threshold nitrogen dioxid limit valu nitrogen dioxid oxid nitrogen limit valu express μg volum standardis temperatur pressur kpa gt tabl gt ii alert threshold nitrogen dioxid μg measur consecut hour locat repres air qualiti km entir zone agglomer whichev smaller iii minimum detail made public alert threshold nitrogen dioxid exceede detail made public includ date hour place occurr reason occurr forecast concentr improv stabilis deterior reason geograph area concern durat occurr type popul potenti sensit occurr precaut sensit popul concern annex iii limit valu particul matter pm gt tabl gt annex iv limit lead gt tabl gt annex determin requir assess concentr sulphur dioxid nitrogen dioxid oxid nitrogen nox particul matter pm lead ambient air zone agglomer upper lower assess threshold upper lower assess threshold appli sulphur dioxid gt tabl gt nitrogen dioxid oxid nitrogen gt tabl gt particul matter upper lower assess threshold pm base indic limit valu januari gt tabl gt lead gt tabl gt ii determin exceed upper lower assess threshold exceed upper lower assess threshold determin basi concentr previou year suffici data assess threshold deem exceed year total number exceed numer concentr threshold time number exceed allow year fewer year data member state combin measur campaign short durat period year locat typic highest pollut level result obtain inform emiss inventori model determin exceed upper lower assess threshold annex vi locat sampl point measur sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air consider appli fix measur macroscal site protect human health sampl point direct protect human health site provid data area zone agglomer highest concentr occur popul directli indirectli expos period signific relat averag period limit ii provid data level area zone agglomer repres exposur gener popul sampl point gener site avoid measur small micro environ vicin guidelin sampl point site repres air qualiti surround area traffic orient site squar kilometr urban background site sampl point repres similar locat vicin account locat sampl point island protect human health protect ecosystem veget sampl point target protect ecosystem veget site km agglomer km built area industri instal motorwai guidelin sampl point site repres air qualiti surround area km member state provid sampl point site lesser distanc repres air qualiti extend area take account geograph condit account assess air qualiti island ii microscal site guidelin met practic flow inlet sampl probe unrestrict obstruct affect airflow vicin sampler metr build balconi tree obstacl nearest build case sampl point repres air qualiti build line gener inlet sampl point breath zone ground higher posit circumst higher site station repres larg area inlet probe posit vicin sourc order avoid direct intak emiss unmix ambient air sampler exhaust outlet posit recircul exhaust air sampler inlet avoid locat traffic orient sampler pollut sampl point edg major junction centr nearest traffic lane nitrogen dioxid inlet kerbsid particul matter lead inlet site repres air qualiti build line factor account interf sourc secur access avail electr power telephon commun visibl site relat surround safeti public oper desir locat sampl point pollut plan requir iii document review site select site select procedur fulli document classif stage mean compass point photograph surround area detail map site review regular interv repeat document ensur select criteria remain valid time annex vii criteria determin minimum number sampl point fix measur concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter lead ambient air minimum number sampl point fix measur assess complianc limit valu protect human health alert threshold zone agglomer fix measur sole sourc inform diffus sourc gt tabl gt point sourc assess pollut vicin point sourc number sampl point fix measur calcul take account emiss densiti distribut pattern ambient air pollut potenti exposur popul ii minimum number sampl point fix measur assess complianc limit valu protect ecosystem veget zone agglomer gt tabl gt island zone number sampl point fix measur calcul take account distribut pattern ambient air pollut potenti exposur ecosystem veget annex viii data qualiti object compil result air qualiti assess data qualiti object data qualiti object requir accuraci assess method minimum time coverag data captur measur laid guid qualiti assur programm gt tabl gt accuraci measur defin laid quot guid express uncertainti measur quot iso iso quot accuraci trueness precis measur method result quot percentag tabl individu measur averag period consid limit confid interv bia time standard deviat accuraci continu measur interpret applic region limit accuraci model object estim defin maximum deviat measur calcul concentr level period consid limit take account time event requir minimum data captur time coverag includ loss data due regular calibr normal mainten instrument derog member state appli random measur continu measur particul matter lead demonstr commiss accuraci confid interv respect continu monitor random sampl spread evenli year ii result air qualiti assess inform compil zone agglomer sourc measur emploi supplement inform measur sole mean air qualiti assess descript assess activ carri specif method refer descript method sourc data inform descript result includ accuraci extent area relev length road zone agglomer concentr exce limit limit applic margin toler area concentr exce upper assess threshold lower assess threshold limit valu object protect human health popul potenti expos concentr excess limit member state compil map show concentr distribut zone agglomer iii standardis sulphur dioxid oxid nitrogen volum standardis temperatur pressur kpa annex ix refer method assess concentr sulphur dioxid nitrogen dioxid oxid nitrogen particul matter pm pm lead refer method analysi sulphur dioxid iso fdi standard draft ambient air determin sulphur dioxid ultraviolet fluoresc method member state method demonstr result equival method ii refer method analysi nitrogen dioxid oxid nitrogen iso ambient air determin mass concentr nitrogen oxid chemiluminesc method member state method demonstr result equival method iii refer method sampl lead refer method sampl lead annex direct eec time limit annex iv direct met refer method pm laid section iv annex member state method demonstr result equival method iii refer method analysi lead iso ambient air determin particul lead content aerosol collect filter atom absorpt spectroscopi method member state method demonstr result equival method iv refer method sampl measur pm refer method sampl measur pm en quot air qualiti field test procedur demonstr refer equival sampl method pm fraction particul matter quot measur principl base collect filter pm fraction ambient particul matter gravimetr mass determin member state method demonstr result equival method method member state concern demonstr displai consist relationship refer method event result achiev method correct relev factor produc result equival achiev refer method member state inform commiss method sampl measur pm commiss carri intercomparison exercis pm sampl measur method order provid inform review direct accord articl provision refer method sampl measur pm commiss produc guidelin consult committe refer articl direct eec provision refer method sampl assess pm juli member state method consid suitabl member state inform commiss method sampl measur pm commiss carri intercomparison exercis pm sampl measur method order provid inform review direct accord articl vi refer model techniqu refer model techniqu present amend adapt point scientif technic progress adopt accord procedur laid articl direct ec