Likumprojekts

Vides ministrs

R.Vējonis

apņēmušās īstenot Konvenciju par robežšķērsojošo gaisa piesārņošanu lielos attālumos;

atzīdamas, ka daudzu noturīgo organisko piesārņotāju emisija pārvietojas pāri valstu robežām un veido nosēdumus Eiropā, Ziemeļamerikā un Arktikā tālu no to rašanās vietām un ka atmosfēra ir galvenais pārneses ceļš;

apzinoties, ka noturīgie organiskie piesārņotāji dabiskos apstākļos ir noturīgi pret noārdīšanos un ar tiem saistīta nelabvēlīga ietekme uz cilvēku veselību un vidi;

norūpējušās par to, ka noturīgie organiskie piesārņotāji var akumulēties augšējos trofiskajos līmeņos tādās koncentrācijās, kas var ietekmēt savvaļas dzīvnieku un cilvēku veselību;

atzīstot, ka, palielinoties noturīgo organisko piesārņotāju koncentrācijai katrā barības ķēdes posmā, sevišķi apdraudētas ir arktiskās ekosistēmas, jo īpaši to vietējie iedzīvotāji, kuri uzturā lieto Arktikas zivis un zīdītājus;

zinot, ka noturīgo organisko piesārņotāju emisijas ierobežošanas pasākumi dotu ieguldījumu arī vides un cilvēka veselības aizsardzībā apgabalos, kas atrodas ārpus Apvienoto Nāciju Organizācijas Eiropas Ekonomikas komisijas reģiona, arī Arktikā un starptautiskajos ūdeņos;

apņēmušās veikt pasākumus, lai prognozētu, novērstu vai samazinātu noturīgo organisko piesārņotāju emisiju, ņemot vērā Riodežaneiro Deklarācijas par vidi emisijas kvotu tirdzniecības;

atzīdamas, ka darbojas subreģionāli, reģionāli un globāli režīmi, starp tiem arī starptautiskie dokumenti, kas regulē bīstamo atkritumu pārvaldību, to pārrobežu transportu un galīgo apstrādi, it īpaši Bāzeles konvencija par bīstamo atkritumu pārrobežu transporta kontroli un to galējo apstrādi;

ievērodamas, ka dominējošie gaisa piesārņojuma avoti, kas veicina noturīgo organisko piesārņotāju uzkrāšanos, ir noteiktu pesticīdu izmantošana, noteiktu ķimikāliju ražošana un izmantošana un neparedzēta noteiktu vielu veidošanās atkritumu sadedzināšanas, degšanas, metālu ražošanas un mobilo avotu darbības procesā;

zinot, ka ir pieejamas metodes un pārvaldības prakse noturīgo organisko piesārņotāju emisijas samazināšanai atmosfērā;

apzinoties rentablas reģionālās pieejas nepieciešamību gaisa piesārņojuma apkarošanā;

ievērojot privātā un nevalstiskā sektora zināšanas par sekām, kas saistītas ar noturīgajiem organiskajiem piesārņotājiem, iespējamajām alternatīvām un samazināšanas metodēm, un minēto sektoru nozīmi noturīgo organisko piesārņotāju emisijas samazināšanas veicināšanā;

paturot prātā, ka pasākumi, kas tiek īstenoti, lai samazinātu noturīgo organisko piesārņotāju emisiju, nedrīkst radīt iemeslus patvaļīgai vai neattaisnojamai diskriminācijai vai starptautiskās konkurences un tirdzniecības slēptas formas ierobežojumiem;

ņemot vērā zinātniskos un tehniskos datus par emisiju, atmosfēras procesiem un noturīgo organisko piesārņotāju ietekmi uz cilvēku veselību un vidi, kā arī datus par emisijas samazināšanas izmaksām un atzīstot nepieciešamību turpināt zinātnisku un tehnisku sadarbību, lai veicinātu izpratni par šīm problēmām;

ir vienojušās:

1. “Konvencija” nozīmē Konvenciju par robežšķērsojošo gaisa piesārņošanu lielos attālumos, kas pieņemta Ženēvā 1979.gada 13.novembrī.

2. “EMEP” nozīmē Kopējo programmu gaisa piesārņojuma izplatības lielos attālumos novērošanai un novērtēšanai Eiropā.

3. “Izpildinstitūcija” nozīmē Konvencijas izpildinstitūciju, kas izveidota saskaņā ar Konvencijas 10.panta 1.punktu.

4. “Komisija” nozīmē Apvienoto Nāciju Organizācijas Eiropas Ekonomiskā komisiju.

5. “Dalībvalsts”, ja konteksts neprasa citādu apzīmējumu, nozīmē šā Protokola parakstītājas dalībvalstis.

6. “EMEP ģeogrāfiskais apgabals” nozīmē apgabalu, kas noteikts 1979.gada Konvencijas par robežšķērsojošo gaisa piesārņošanu lielos attālumos Ženēvā 1984.gada 28.septembrī pieņemtā Protokola “Par Kopējās programmas gaisa piesārņojuma izplatības lielos attālumos novērošanai un novērtēšanai Eiropā (EMEP) ilgtermiņa finansēšanu” 1.panta 4.punktā.

8. “Viela” nozīmē atsevišķu ķīmisku savienojumu vai ķīmisko savienojumu rindu, kas veido īpašu grupu, tāpēc ka (a) tiem piemīt līdzīgas īpašības un tie kopā ir nokļuvuši vidē; vai (b) tie veido maisījumu, ko parasti pārdod kā atsevišķu izstrādājumu.

9. “Emisija” nozīmē vielu izplūdi atmosfērā no punktveida vai difūza avota.

10. “Stacionārs avots” nozīmē jebkuru stacionāru ēku, būvi, ierīci, ražošanas iekārtu vai iekārtu piederumus, kas tiešā vai netiešā veidā emitē vai var emitēt atmosfērā noturīgos organiskos piesārņotājus.

11. “Galveno stacionāro avota kategorija” nozīmē jebkuru stacionāru avotu kategoriju, kas ir minēta VIII pielikumā.

(a) lai pārtrauktu I pielikumā minēto vielu ražošanu un izmantošanu saskaņā ar minētajā pielikumā norādītajām prasībām attiecībā uz īstenošanu;

(c) lai ierobežotu II pielikumā minēto vielu izmantošanu pielikumā minētajiem mērķiem saskaņā ar tajā norādītajām prasībām attiecībā uz īstenošanu.

2. Prasības, kas norādītas 1.punkta (b) apakšpunktā, stājas spēkā attiecībā uz katru vielu no datuma, kad tiek pārtraukta konkrētās vielas ražošana vai izmantošana, pie kam no norādītajiem datumiem tiek piemērots vēlākais.

4. 1. līdz 3.punktā termini "atkritumi", "galīgā apstrāde" un "videi draudzīgs" jāinterpretē atbilstoši šo terminu izmantošanai Bāzeles konvencijā par bīstamo atkritumu pārrobežu transporta kontroli un to galējo apstrādi.

5. Katra dalībvalsts:

6. Gadījumos, kad piesārņojuma avoti ir sadedzināšanas procesi dzīvojamā sektorā, saistības, kas noteiktas 5.punkta (b) apakšpunkta (i) un (iii) daļās, attiecas uz visiem šās kategorijas stacionārajiem avotiem kopā.

7. Ja dalībvalsts pēc 5.punkta (b) apakšpunkta piemērošanas nevar sasniegt 5.punkta (a) apakšpunktā noteiktās prasības attiecībā uz III pielikumā noteikto vielu, dalībvalsts jāatbrīvo no saistībām, kas par šo vielu minētas 5.punkta (a) apakšpunktā.

1. 3.panta 1.punktu nepiemēro vielas daudzumiem, kura izmantojama laboratorijas mēroga pētījumos vai kā bāzes standarts.

(a) pētījumiem, atskaitot tos, kas iepriekš minēti 1.punktā, ja

(b) lai novērstu neparedzētus draudus cilvēku veselībai, ja

3. Katra dalībvalsts ne vēlāk kā deviņdesmit dienas pēc tam, kad tā piešķīrusi atvieglojumu atbilstoši 2.punktam, sniedz Sekretariātam vismaz šādu informāciju:

(a) vielas, attiecībā uz kuru piešķirts atvieglojums, ķīmisko nosaukumu;

(b) mērķi, kura dēļ atvieglojums ticis piešķirts;

(c) nosacījumi, ar kādiem atvieglojums ticis piešķirts;

(d) laiks, uz kādu atvieglojums ticis piešķirts;

(e) personas vai organizācijas, uz kurām attiecas atvieglojums; un

(f) attiecībā uz atvieglojumu, kas piešķirts atbilstoši 2.panta (a) un (c) apakšpunktam, vielas emisiju, kas veidojas atvieglojuma piešķiršanas rezultātā, un vielas emisijas ieguldījuma novērtējumu dalībvalstu kopējā emisijas apjomā.

4. Sekretariāts dara zināmu visām dalībvalstīm saskaņā ar 3.punktu saņemto informāciju.

(a) kontaktus un sadarbību starp tām organizācijām un personām privātajā un valsts sektorā, kas var piedāvāt tehnoloģijas, plānošanas un inženiertehniskos pakalpojumus, iekārtas vai finanses;

(b) informācijas apmaiņu un pieeju informācijai par noturīgajiem organiskajiem piesārņotājiem alternatīvu savienojumu attīstīšanu un lietošanu, kā arī riska novērtējumu, kuru šīs alternatīvas rada cilvēku veselībai un apkārtējai videi, un informāciju par šādu alternatīvu ekonomiskajām un sociālajām izmaksām;

(c) sarakstu, kuros minētas citas starptautiskos forumos līdzīgās darbībās iesaistītas institūcijas, apkopošana un regulāra atjaunošana;

(d) informācijas apmaiņa par darbībām, kas tiek veiktas citos starptautiskos forumos.

(b) informāciju par riska samazināšanu;

(c) tādu informāciju, kas veicina atteikšanos no noturīgo organisko piesārņotāju lietošanas vai to lietošanas ierobežošanu, ietverot, kur tas ir lietderīgi, informāciju par vienoto kaitēkļu apkarošanu, ražas vienoto pārvaldību un šādas atteikšanās vai lietošanas ierobežošanas ekonomiskajām un sociālajām sekām; un

(d) informāciju par noturīgajiem organiskajiem piesārņotājiem alternatīviem savienojumiem un riska novērtējumu, ko šīs alternatīvas rada cilvēku veselībai un apkārtējai videi, kā arī informāciju par šādu alternatīvu ekonomiskajām un sociālajām sekām.

2. Katra dalībvalsts:

(a) veicina ekonomiski izpildāmu, apkārtējai videi drošu pārvaldības metožu izmantošanu, ņemot vērā šajā Protokolā iekļauto vielu un izgatavoto preču, maisījumu vai šķīdumu izmantošanas, ražošanas, noplūdes, apstrādes, sadales, darbību ar tiem, pārvadāšanas un atkārtotas izmantošanas visus aspektus;

(b) veicina citu pārvaldības programmu (arī brīvprātīgu programmu), kuru mērķis ir samazināt noturīgo organisko piesārņotāju emisiju, īstenošanu un ekonomisko līdzekļu piemērošanu;

(d) savu ekonomisko iespēju robežās cenšas samazināt šajā Protokolā minēto vielu saturu, kuras kā piemaisījumus satur citas vielas, ķīmiskie produkti vai saražotie izstrādājumi, līdzko konstatēts šādu avotu nozīmīgums;

(e) izstrādātajās programmās vielu izvērtēšanai ņem vērā raksturlielumus, kādi noteikti Izpildinstitūcijas lēmuma 1998/2 1.punktā attiecībā uz informāciju, kas jāsniedz un kārtību, kādā vielas tiek iekļautas I, II vai III pielikumā, arī to labojumos.

3. Dalībvalstis var veikt stingrākus pasākumus, nekā noteikts šajā Protokolā

(a) emisiju, pārnesi lielā attālumā un nosēdumiem un to modelēšanu, esošo saturu biotiskajā un abiotiskajā vidē, noteiktas kārtības izstrādāšanu svarīgu metodoloģiju saskaņošanai;

(b) piesārņotāju pārneses ceļiem un kadastriem esošajās ekosistēmās;

(d) labākajām pieejamajām metodēm un praksi, arī lauksaimniecības praksi, un emisijas ierobežošanas metodēm un praksi, ko dalībvalstis izmanto vai kas pašlaik tiek izstrādātas;

(e) metodoloģijām, kas ļautu apsvērt sociāli ekonomiskos faktorus alternatīvo ierobežošanas stratēģiju novērtēšanā;

(f) iedarbībā balstītu pieeju, kas apvieno atbilstošu informāciju, arī informāciju, kas ir uzkrāta saskaņā ar (a) līdz (e) apakšpunktu par izmērītiem vai modelētiem līmeņiem apkārtējā vidē, pārneses ceļiem un ietekmi uz cilvēka veselību un vidi, lai formulētu ierobežošanas stratēģijas nākotnei, kurās tiktu ņemti vērā arī ekonomiskie un tehnoloģiskie faktori;

(g) metodēm atsevišķu noturīgo organisko piesārņotāju emisijas novērtēšanai valstī un emisijas prognozēšanai nākotnē, kā arī, lai novērtētu, kā šādi novērtējumi un prognozes var tikt izmantoti nākotnes saistību formulēšanai;

(h) šajā Protokolā minēto vielu saturu, kuras kā piemaisījumus satur citas vielas, ķīmiskie produkti vai saražotie izstrādājumi, un šā satura nozīmi liela attāluma pārnesē, kā arī metodēm, lai samazinātu šo piemaisījumu saturu un papildus arī to noturīgo organisko piesārņotāju saturu, kuri rodas ar pentahlorfenolu apstrādātas koksnes dzīves cikla laikā.

Prioritāte tiek piešķirta pētījumiem par vielām, kuras, ļoti iespējams, varētu tikt pievienotas saskaņā ar kārtību, kas noteikta 14.panta 6.punktā.

2. Saskaņā ar 1.panta (a) apakšpunktu sniegtajai informācijai formas un satura ziņā jāatbilst lēmumam, kas dalībvalstīm jāpieņem Izpildinstitūcijas sanāksmē. Šā lēmuma noteikumi, ja nepieciešams, jāpārskata, lai noskaidrotu jebkurus papildinājumus attiecībā uz informācijas formu vai saturu, kuri būtu jāiekļauj ziņojumā.

3. Pirms katras ikgadējas Izpildinstitūcijas sanāksmes EMEP nodrošina savlaicīgu informāciju par noturīgo organisko piesārņotāju nosēdumiem un to pārnesi lielos attālumos.

2. Dalībvalstis Izpildinstitūcijas sanāksmēs analizē progresu, kas sasniegts, izpildot šajā Protokolā noteiktās saistības.

(a) strīda izšķiršanu nodot Starptautiskajai tiesai;

3. Deklarācija, kas sagatavota saskaņā ar 2.punktu, paliek spēkā līdz noteiktā termiņa beigām vai trīs mēnešus pēc tam, kad depozitārijam ir iesniegts rakstveida paziņojums par deklarācijas atcelšanu.

6. 5.punkta noteikumu mērķu īstenošanai ir jāizveido samierināšanas komisija. Komisija sastāvā vienādā skaitā ir katras ieinteresētās dalībvalsts iecelti pārstāvji, vai tajos gadījumos, kad dalībvalstīm samierināšanas procedūrā ir vienas un tās pašas intereses, grupa, kam ir šādas intereses, un priekšsēdētājs, ko kopīgi ievēlē šādi ieceltie locekļi. Komisija pieņem rekomendējošu lēmumu, kuru dalībvalstis godprātīgi ņem vērā.

Šā Protokola pielikumi ir Protokola neatņemama sastāvdaļa. V un VII pielikumam ir rekomendējošs raksturs.

1. Jebkura dalībvalsts var ierosināt izdarīt labojumus šajā Protokolā.

2. Ierosinātie labojumi rakstveidā jāiesniedz Komisijas Izpildsekretāram, kas par to informē visas dalībvalstis. Tiekoties Izpildinstitūcijas ietvaros, dalībvalstis izskata ierosinātos labojumus tuvākajā Izpildinstitūcijas sanāksmē ar nosacījumu, ka Izpildsekretārs ir iepazīstinājis dalībvalstis ar šiem ierosinājumiem vismaz deviņdesmit dienas pirms sanāksmes.

6. Gadījumā, ja ir priekšlikums izdarīt labojumus I, II, vai III pielikumā, pievienojot vielu šim Protokolam:

(b) dalībvalstis novērtē priekšlikumu saskaņā ar kārtību, kāda izklāstīta Izpildinstitūcijas lēmumā 1998/2, ieskaitot arī jebkādus labojumus.

7. Jebkurš lēmums izdarīt labojumus Izpildinstitūcijas lēmumā 1998/2 tiek pieņemts vienprātīgi, dalībvalstīm tiekoties Izpildinstitūcijas ietvaros, un stājas spēkā pēc sešdesmit dienām no pieņemšanas datuma.

2. Šīs reģionālās ekonomiski vienotās organizācijas savu pilnvaru robežās izmanto tiesības un pilda saistības, ko šis Protokols nosaka to dalībvalstīm. Tādā gadījumā šo organizāciju dalībvalstis nevar izmantot šīs tiesības individuāli.

2. 15.panta 1.punkta prasībām atbilstošās valstis un organizācijas var pievienoties Protokolam, sākot ar 1998.gada 21.decembri.

2. Katrai 15.panta 1.punktā minētajai valstij vai organizācijai, kas ratificē, pieņem, apstiprina šo Protokolu, vai pievienojas Protokolam pēc tam, kad depozitārijā glabāšanā iesniegts sešpadsmitais akts par ratifikāciju, pieņemšanu, apstiprināšanu vai pievienošanos, Protokols stājas spēkā deviņdesmitajā dienā pēc datuma, kad šī dalībvalsts nodevusi glabāšanai depozitārijam savu aktu par ratifikāciju, pieņemšanu, apstiprināšanu vai pievienošanos.

Šā Protokola oriģināls, kura angļu, franču un krievu valodā rakstītie teksti ir vienlīdz autentiski, tiek nodots glabāšanā Apvienoto Nāciju Organizācijas ģenerālsekretāram.

To apliecinot, apakšā parakstījušies, būdami tam atbilstoši pilnvaroti, ir parakstījuši šo Protokolu.

Sastādīts Orhūsā (Dānijā), tūkstoš deviņi simti deviņdesmit astotā gada divdesmit ceturtajā jūnijā.

a Dalībvalstis, saskaņā ar Protokolu, vienojas līdz 2004.gada 31.decembrim pārskatīt polihlorēto terfenilu un “ugilecs” ražošanu un izmantošanu.

VIELAS, UZ KO ATTIECAS 3.PANTA 5.PUNKTA (a) APAKŠPUNKTS, UN SAISTĪBU IZPILDES BĀZES GADS

a Policikliskie aromātiskie ogļūdeņraži (PAO): emisijas kadastru mērķiem tiek izmantoti sekojoši četri indikatorsavienojumi: benzo(a)pirēns, benzo(b)fluorantēns, benzo(k)fluorantēns un indeno(1,2,3-cd)pirēns.

1. Dioksīnu un furānu (PHDD/F) definīcijas sniegtas Protokola III pielikumā.

2. Robežvērtības izteiktas kā ng/m³ vai mg/m³ standarta nosacījumos (temperatūra 273,15 K, spiediens 101,3 kPa, sausa gāze).

3. Robežvērtības attiecināmas uz normāliem ekspluatācijas apstākļiem, arī operāciju uzsākšanu un pārtraukšanu, ja vien šīm situācijām nav noteiktas konkrētas robežvērtības.

5. Pārbaudes nolūkos mērījumu rezultātu interpretēšanā, nosakot robežvērtības, jāņem vērā arī mērījuma metodes kļūda. Robežvērtība skaitās ievērota, ja tā nepārsniedz mērījuma rezultātu, no kura ir atņemta mērījuma metodes kļūda.

0,1 ng TE/m³

Cieto medicīnisko atkritumu sadedzināšana (sadedzinot vairāk kā 1 tonnu stundā)

0,5 ng TE/m³

Bīstamo atkritumu sadedzināšana (sadedzinot vairāk kā 1 tonnu stundā)

0,2 ng TE/m³

1. Šā pielikuma mērķis ir nodrošināt Konvencijas dalībvalstis ar ieteikumiem par labākajām galvenajiem stacionārajiem avotiem pieejamajām metodēm, lai dalībvalstis varētu izpildīt Protokola 3.panta 5.punktā noteiktās prasības.

2. “Labākās pieejamās tehnoloģijas” (LPT) nozīmē efektīvāko un attīstītāko pakāpi darbību un to izmantošanas metožu attīstībā, kuras norāda atsevišķu tehnoloģiju praktisko piemērotību, nosakot emisijas robežvērtības, un kuras izstrādātas, lai novērstu un, ja tas nav praktiski iespējams, samazinātu emisiju un tās ietekmi uz vidi kopumā:

Nosakot labākās pieejamās tehnoloģijas kopumā vai katrā gadījumā atsevišķi, jāņem vērā īpaši apsvērumi attiecībā uz turpmākajā tekstā minētajiem faktoriem, paturot prātā iespējamās izmaksas un ieguvumus, kā arī piesardzības un preventīvos principus:

Labāko pieejamo metožu jēdziens neraksturo kādu metodi vai tehnoloģiju, bet ietver sevī attiecīgās iekārtas tehnisko raksturojumu, tās ģeogrāfisko atrašanās vietu un vietējos vides apstākļus.

3. Informācija par emisijas ierobežošanas pasākumu efektivitāti un izmaksām pamatojas uz dokumentiem, ko saņēmusi un izskatījusi Speciālā komisija un NOP sagatavošanas darba grupa. Ja vien nav norādīts citādi, tālāk minētās metodes tiek uzskatītas par labākajām balstoties uz pieredzi, kas gūta to izmantošanā.

5. Pielikumā minēti emisijas ierobežošanas līdzekļi, to dažādās izmaksas un efektivitāte. Līdzekļu izvēle katram atsevišķam gadījumam būs atkarīga no virknes faktoru, piemēram, ekonomiskie apstākļi, tehnoloģiskā infrastruktūra un tehniskā jauda, kā arī jebkuri jau esošie gaisa piesārņojuma ierobežošanas līdzekļi.

6. Svarīgākie NOP, kas tiek emitēti no stacionārajiem avotiem ir:

(a) polihlorētie dibenzo-p-dioksīni/furāni (PHDD/F);

(b) heksahlorbenzols (HHB);

(c) policikliskie aromātiskie ogļūdeņraži (PAO).

Svarīgākās definīcijas ir sniegtas Protokola III pielikumā.

(a) atkritumu sadedzināšana, ieskaitot kopējo sadedzināšanu;

(b) termiskie metalurģiskie procesi, piemēram, alumīnija un citu krāsaino metālu, dzelzs un tērauda ražošana;

(c) sadedzināšanas iekārtas enerģijas ražošanai;

(d) sadedzināšanas procesi dzīvojamajā sektorā;

(e) atsevišķi ķīmiskās rūpniecības procesi, kuru rezultātā atbrīvojas starpprodukti un blakusprodukti.

8. Galvenie stacionārie PAO emisijas avoti var būt šādi:

(b) atklāta sadedzināšana, piemēram, atkritumu sadedzināšana, mežu ugunsgrēki un lauksaimniecības kultūru atlikumu sadedzināšana

(c) koksa un anodu raţođana;

(d) alumīnija ražošana (izmantojot Soederberg procesu);

9. HHB tiek emitēts tāda pat tipa termisko un ķīmisko procesu rezultātā, kādos veidojas PHDD/F, un HHB veidošanās mehānisms ir līdzīgs. Galvenie HHB emisijas avoti var būt šādi:

(a) iekārtas atkritumu sadedzināšanai, tai skaitā, kopējās sadedzināšanas iekārtas;

(b) termiskie avoti metalurģiskajā rūpniecībā;

(c) hloru saturoša kurināmā izmantošana sadedzināšanas iekārtās.

(a) izejmateriālu, kas ir NOP, nomaiņa, vai to nomaiņa tajā gadījumā, kad pastāv tieša saikne starp materiāliem un NOP emisiju no konkrēta avota;

(b) labākās vides aizsardzības prakses izmantošana, piemēram saprātīga saimniekošana, preventīvās tehniskās apkopes programmas, vai tehnoloģisko procesu nomaiņa, piemēram slēgtās sistēmas (piemēram, koksa krāsnīs vai inertu elektrodu izmantošana elektrolīzei);

(c) procesa gaitas modifikācija, izmainot tā parametrus (piemēram, sadedzināšanas temperatūru un uzturēšanās laiku iekārtā) nolūkā nodrošināt pilnīgu sadegšanu, tā novēršot noturīgo organisko piesārņotāju veidošanos;

(d) izplūdes gāzu attīrīšanas metodes, piemēram, termiskā vai katalītiskā sadedzināšana vai oksidēšana, putekļu nogulsnēšana, adsorbcija;

(e) atlikumu, atkritumu un notekūdeņu dūņu apstrāde, piemēram, termiskā apstrāde vai to ķīmiskā inertuma nodrošināšana.

11. Emisijas līmeņi, kas norādīti dažādiem pasākumiem 1., 2., 4., 5., 6., 8. un 9.tabulā, parasti ir raksturīgi katram konkrētam gadījumam. Konkrētie skaitļi vai robežas rāda emisijas līmeņus, kas izteikti kā procenti no emisijas robežvērtībām apstākļos, kad izmantojot parastās metodes.

A. Atkritumu dedzināšana

13. Atkritumu dedzināšana ietver sadzīves atkritumu, bīstamo atkritumu, medicīnisko atkritumu un notekūdeņu dūņu dedzināšanu.

14. Galvenās ierobežošanas metodes PHDD/F emisijai, kas nāk no sadedzināšanas iekārtām, ir šādas:

(a) primārie pasākumi, kas attiecas uz sadedzināmajiem atkritumiem;

(b) primārie pasākumi, kas attiecas uz procesa tehnoloģiju;

(c) pasākumi sadedzināšanas procesa un atgāzu fizikālo parametru kontrolei (piemēram, temperatūras gradienti, atdzesēšanas ātrums, O2 saturs, utt.);

(d) izplūdes gāzu attīrīšana;

(e) attīrīšanas procesā radušos atlikumu apstrāde.

16. Tehnoloģisko procesu modifikācija nolūkā optimizēt sadedzināšanas apstākļus ir nozīmīgs un efektīvs pasākums PHDD/F emisijas samazināšanai (parasti 850 ° C vai augstākā temperatūrā, skābekļa padeve atkarībā no atkritumu siltumspējas un konsistences, pietiekamais procesa ilgums – apmēram 2 sekundes 850 ° C, tāda režīma nodrošināšana sadedzināšanas iekārtā, kura gaitā gāze ir turbulenta un nerodas gāzes aukstās zonas, u.c.). Verdošā slāņa sadedzināšanas iekārtas ļauj uzturēt temperatūru, kas zemāka par 850 ° C pie adekvātiem emisijas parametriem. Esošajās atkritumu dedzināšanas iekārtās procesa modifikācija parasti ietver izmaiņas to konstrukcijā un/vai to pārvietošanu – alternatīvu, kas var nebūt ekonomiski izdevīga visās valstīs. Jāsamazina oglekļa saturs pelnos.

17. Pasākumi, kas saistīti ar izplūdes gāzu attīrīšanu. Tālāk minētie pasākumi ļauj pietiekami efektīvi samazināt PHDD/F saturu izplūdes gāzēs. De novo sintēze notiek apmēram 250 ° C līdz 450 ° C temperatūrā. Šie pasākumi ir priekšnoteikums turpmākai piesārņojuma samazināšanai, lai sasniegtu vēlamo emisijas līmeni sadedzināšanas procesa beigās:

(a) izplūdes gāzu dzesēšana (ļoti efektīva un nosacīti lēta metode);

(b) inhibitoru pievienošana, piemēram, trietanolamīna vai trietilamīna (var arī samazināt slāpekļa oksīdu daudzumu), taču drošības apsvērumu dēļ jāņem vērā blakus reakciju norises iespējas;

(c) putekļu savākšanas sistēmu izmantošana temperatūrā no 800 līdz 1000 ° C, piemēram, keramiskie filtri un cikloni;

(d) zemas temperatūras elektriskās izlādes sistēmu izmantošana;

(e) izvairīšanās no lidojošo pelnu nosēdumiem izplūdes gāzu izvades sistēmā.

18. Izplūdes gāzu attīrīšanas metodes ir:

(a) parastie putekļu uztvērēji ar daļiņām saistīto PHDD/F emisijas samazināšanai;

(c) adsorbcija ar aktīvo kokogli vai koksu nekustīgās vai verdošā slāņa sistēmās;

(d) dažāda veida adsorbcijas metodes un optimizētas skruberu pielietošanas sistēmas ar aktīvās kokogles, krāsns ogļu, kaļķu un kaļķakmens šķīduma maisījumiem nekustīgos, kustīgos un verdošā slāņa reaktoros. Gāzveidīgo PHDD/F savākšanas efektivitāti var palielināt, izmantojot piemērotu aktivēta koksa pamatslāni uz maisa filtra virsmas;

(e) oksidēšanu ar H2O2;

(f) katalītiskās sadedzināšanas metodes izmantojot dažāda veida katalizatorus (tas ir, Pt/Al2O3 vai vara-hromīta katalizatorus ar dažādām piedevām, kas stabilizē virsmu un palēnina katalizatoru novecošanos).

19. Iepriekšminētās metodes ļauj samazināt PHDD/F emisiju līmeni izplūdes gāzēs līdz 0,1 ng TE/m³. Tomēr nepieciešams veikt atbilstošus pasākumus, lai nodrošinātu to, ka sistēmās, kurās tiek izmantota aktivētā ogle vai koksa adsorbētāji/filtri, ogļu putekļu difūzā emisija, nepalielinātu PHDD/F emisijas līmeni tehnoloģiskā procesa sekojošajos ciklos. Jāatzīmē arī, ka adsorbētāji un atputekļošanas iekārtas, kas atrodas pirms katalizatora (SKR metode), rada PHDD/F saturošus atlikumus, kurus nepieciešams papildus apstrādāt vai pareizā veidā apglabāt.

22. Dalībvalstis var vēlēties apspriest politikas īstenošanu, kas stimulē sadzīves un medicīnisko atkritumu sadedzināšanu veikt labāk lielos reģionālos centros un nevis mazākās iekārtās. Šādas pieejas īstenošana var ļaut paaugstināt LPT piemērošanas rentabilitāti.

(a) auduma filtros esošo putekļu katalītiskā attīrīšana zemas temperatūras un skābekļa trūkuma apstākļos;

(b) auduma filtros esošo putekļu attīrīšana skruberī, izmantojot 3-R procesu (smago metālu ekstrakcija ar skābēm un destruktīva organiskās vielas sadedzināšana);

(c) auduma filtros esošu putekļu saķepināšana;

(d) citas imobilizācijas metodes;

(e) plazmas tehnoloģijas pielietošana.

a paliekošā emisija salīdzinājumā ar variantu bez emisijas samazinājuma.

B. Termiskie procesi metalurģiskajā rūpniecībā

24. Atsevišķi procesi metalurģiskajā rūpniecībā var būt nozīmīgi paliekoši PHDD/F emisijas avoti. Pie tādiem pieder:

(a) primārā dzelzs un tērauda ražošana (piemēram, domnu krāsnis, rūdas aglomerāta ražošanas iekārtas, dzelzs granulēšana);

(b) otrreizējā dzelzs un tērauda ražošana;

(c) primārā un otrreizējā krāsaino metālu ražošana (vara ražošana).

2.tabulā ir apkopota informācija par PHDD/F emisijas ierobežošanas pasākumiem metalurģiskajā rūpniecībā.

a paliekošā emisija salīdzinājumā ar variantu bez emisijas samazinājuma.

25. Metālu ražošanas un apstrādes iekārtās, izmantojot atbilstošus emisijas ierobežošanas pasākumus, iespējams nodrošināt maksimālo PHDD/F emisijas koncentrāciju 1 ng TE/m³ (ja atgāzes plūsmas intensitāte > 5000 m³/h).

Aglomerāta ražošanas iekārtas

26. Kā liecina mērījumu rezultāti aglomerāta ražošanas iekārtās tērauda un dzelzs rūpniecībā, PHDD/F emisija ir robežās no 0,4 līdz 4 ng TE/m3. Vienreizējs mērījums vienā iekārtā, kurā netika veikti emisijas ierobežošanas pasākumi, uzrādīja 43 ng TE/m3 lielu PHDD/F koncentrāciju.

28. PHDD/F emisijas samazināšanu visefektīvākajā veidā var sasniegt, pielietojot vienlaicīgi dažādus sekundāros pasākumus, piemēram:

(a) atgāzu recirkulācija ievērojami samazina PHDD/F emisiju. Turklāt ievērojami samazinās kopēja atgāzu plūsma, tādejādi samazinot izmaksas par jebkādas papildus sistēmas uzstādīšanu procesa kontrolei;

(b) auduma filtru (atsevišķos gadījumos vienlaicīgi ar elektrostatiskajiem uztvērējiem) vai elektrostatisko uztvērēju uzstādīšana ar aktivētās ogles/krāsns ogles/kaļķakmens maisījuma iesmidzināšanu atgāzēs;

(c) tika izstrādātas attīrīšanas metodes, kurās izmantoti skruberi; tās ietver atgāzu iepriekšēju atdzesēšanu, mitro apstrādi augstefektīvā skruberī un separāciju, izgulsnējot kā kondensātu. Izmantojot šīs metodes, iespējams nodrošināt emisijas līmeņus no 0,2–0,4 ng TE/m³. Pievienojot atbilstošus adsorbcijas aģentus, piemēram, brūnogļu/ogļu, koksa/ogļu putekļus, iespējams nodrošināt emisijas līmeni 0,1 ng TE/m³.

Primārā un otrreizējā vara ražošana

30. Parasti PHDD/F emisijas samazināšanai izmanto šādus pasākumus:

(a) metāllūžņu iepriekšēju šķirošanu;

(b) metāllūžņu iepriekšēju apstrādi, piemēram, atdalot plastmasas vai PVH pārklājumus, kabeļu atlikumu iepriekšēju apstrādi, izmantojot tikai aukstās/mehāniskās metodes;

(c) karsto atgāzu dzesēšanu (tādejādi nodrošinot siltuma utilizāciju), saīsinot materiāla uzturēšanās laiku kritiskajā temperatūras zonā atgāzu sistēmā;

(d) skābekļa vai ar skābekli bagātināta gaisa izmantošanu sadedzināšanas laikā vai skābekļa padevi šahtveida krāsnī (nodrošinot pilnīgu sadegšanu un atgāzu apjoma samazināšanu līdz minimumam);

(e) adsorbciju nekustīgā slāņa reaktoros vai verdošā slāņa strūklas reaktoros ar aktivēto ogli vai krāsns ogļu putekļiem;

(f) katalītiskā oksidēšanās.

Tērauda ražošana

31. PHDD/F emisija no tēraudlietuves konverteriem, ko izmanto tērauda ražošanai, un no kārstās velkmes stāvcepļiem, no elektriskajām krāsnīm un elektriskā loka krāsnīm, ko izmanto čuguna kausēšanai, ir ievērojami zemāka par 0,1 ng TE/m3. Aukstās velkmes krāsnis un rotējošās cauruļveida krāsnis (čuguna kausēšana) rada emisiju ar augstāku PHDD/F saturu.

32. Elektriskā loka krāsnīs, ko izmanto otrreizējai tērauda ražošanai, var panākt 0,1 ng TE/m3 emisiju, ja pielieto šādus pasākumus:

(a) iekraušanas un izkraušanas operācijā emitēto piesārņotāju dalīta uztveršana;

(b) auduma filtru vai elektrostatisko uztvērēju izmantošana, kombinējot ar koksa iesmidzināšanu.

Kausēšanas iekārtas otrreizējā alumīnija ražošanā

34. PHDD/F emisija no kausēšanas iekārtām otrreizējā alumīnija ražošanā variē robežās no 0,1 līdz 14 ng TE/m3. Šie līmeņi ir atkarīgi no kausēšanas agregātu veida, izmantotajiem materiāliem un pielietotajām atgāzu attīrīšanas metodēm.

36. Var apsvērt arī šādus pasākumus:

(a) dažādi piesārņotu atgāzu plūsmu minimizācija un dalīta uztveršana un attīrīšana;

(b) apstākļu nodrošināšana, lai atgāzēs esošās cietās daļiņas neveidotu nosēdumus;

(c) materiāla uzturēšanās laika saīsināšana kritiskajā temperatūras zonā;

(d) alumīnija metāllūžņu, kas nāk no sasmalcināšanas iekārtām, iepriekšējas šķirošanas procesa pilnveidošana pielietojot gremdēšanas separācijas metodes un šķirošanu ar daļiņu nogulsnēšanu virpuļveida plūsmās;

(e) alumīnija metāllūžņu iepriekšējas attīrīšanas procesa pilnveidošana, pielietojot pārklājuma noņemšanu izstrādājumiem un to žāvēšanu.

37. Alternatīvie pasākumi (d) un (e) ir nozīmīgi, jo maz ticams, ka, īstenojot mūsdienīgās nemainīga režīma kausēšanas tehnoloģijas (kurām nav pieņemamas halogenīdu sastāva izmaiņas procesa laikā), būs iespējams apstrādāt zemas kvalitātes metāllūžņus, kurus var izmantot rotējošajās krāsnīs.

38. Konvencijas par Atlantijas okeāna ziemeļaustrumu daļas jūras vides aizsardzību ziemeļaustrumu ietvaros turpinās diskusijas par iespēju pārskatīt agrāk izstrādātās rekomendācijas par pakāpenisku heksahlorcikloheksāna izmantošanas pārtraukšanu alumīnija ražošanas nozarē.

C. Fosilo kurināmo dedzināšana komunālo un rūpniecības uzņēmumu katlumājās

40. Sadedzinot fosilo kurināmo komunālo un rūpniecības uzņēmumu katlumājās (ar jaudu >50MWth), energoefektivitātes paaugstināšana un energoresursu taupība nodrošinās visu piesārņotāju emisijas samazināšanos, jo samazināsies kurināmā patēriņš. Tā rezultātā samazināsies arī PHDD/F emisija. Hlora atdalīšana no oglēm vai naftas nebūtu rentabls risinājums, bet jebkurā gadījumā tendence izmantot iekārtas, kas tiek darbinātas ar gāzi, palīdzēs samazināt PHDD/F emisiju šajā sektorā.

D. Sadedzināšanas procesi dzīvojamā sektorā

43. Dzīvojamā sektora sadedzināšanas iekārtu ieguldījums kopējā PHDD/F emisijas apjomā ir mazāk nozīmīgs tad, kad kurināmais, kuru atļauts izmantot, tiek pareizi sadedzināts. Turklāt var rasties ievērojamas reģionālās atšķirības emisijas līmeņos, kas saistīts ar tādiem faktoriem kā kurināmā veids un kvalitāte, iekārtu izplatības ģeogrāfiskais blīvums un to izmantošanas īpatnības.

46. Emisiju no dzīvojamā sektora sadedzināšanas iekārtām var samazināt, lietojot tikai augstas kvalitātes kurināmo un izvairoties no atkritumu, halogenētu plastmasu un citu materiālu dedzināšanas. Šā mērķa sasniegšanu var veicināt dzīvojamā sektora sadedzināšanas iekārtu pircējiem/operatoriem adresētas sabiedrības informēšanas programmas.

E. Sadedzināšanas iekārtas, kurās izmanto koksni (jauda <50 MW)

A. Koksa raţođana

49. Koksa ražošanas laikā PAO tiek nonāk apkārtējā vidē galvenokārt šādos veidos:

(a) kad krāsns tiek piepildīta caur piepildīšanas lūkām;

(b) noplūdes rezultātā caur krāsns durvīm, koksa gāzes novadcaurulēm un piepildīšanas lūku vākiem;

(c) koksa izvadīšanas un atdzesēšanas laikā.

50. Benzo(a)pirēna (BaP) koncentrācija būtiski atšķiras koksa baterijas dažādās noplūdes vietās. Visaugstākās BaP koncentrācijas reģistrētas koksa baterijas augšējā daļā un tiešā krāns durvju tuvumā.

51. Emisiju, kas rodas koksa ražošanas rezultātā, var ievērojami samazināt, tehniski pilnveidojot esošās dzelzs un tērauda ražotnes. Tas varētu veicināt veco koksa bateriju aizvietošanu un koksa ražošanas apjomu samazināšanos, ieviešot, piemēram, augstvērtīgu ogļu izmantošanu tērauda ražošanā.

52. Koksa bateriju darbības rezultātā radušās PAO emisijas samazināšanas stratēģija ietver šādus tehniskos pasākumus:

(b) novērst emisiju, kas rodas pie iepildīšanas lūkas koksa ražošanas laikā, iespējams:

(c) koksa gāzu novadcauruļu vākiem jābūt aprīkotiem ar hidrauliskajiem aizslēgiem, lai nodrošinātos pret gāzu un darvas emisiju, un hidraulisko aizslēgu pareiza ekspluatācija jānodrošina, veicot to regulāru tīrīšanu;

(d) koksa krāšņu mehānismi, kas nodrošina krāšņu durvju darbināšanu, jāaprīko ar sistēmām durvju un durvju rāmju aizslēgu virsmu tīrīšanai;

(e) koksa krāšņu durvis:

(f) koksa transportēšanas mehānisms jāaprīko ar vienotu sistēmu, kas sastāv no velkmes nojumes, stacionāras novadcaurules un stacionāras gāzu attīrīšanas iekārtas (vēlams – auduma filtriem);

(g) koksa dzesēšanai jāizmanto paņēmieni, kas nodrošina zemu emisijas līmeni, piemēram, koksa sausā dzesēšana. Mitrās dzesēšanas procesa aizvietošanai ar koksa sauso dzesēšanu jādod priekšroka, izņemot tos gadījumus, kad netiek pieļauta notekūdeņu veidošanās noslēgtu cirkulācijas sistēmu izmantošanas rezultātā. Rīkojoties ar koksu, kam pielietota sausā dzesēšana, jāsamazina putekļu rašanās.

54. Nepieciešams īstenot efektīvu monitoringa programmu attiecībā uz gāzu noplūdēm caur koksa krāšņu durvju aizslēgiem, no gāzu novadcaurulēm un iepildīšanas lūkām. Tā ietver noplūžu monitoringu un reģistrāciju, kā arī neatliekamo remontu vai tehnisko apkopi. Tādejādi iespējams nodrošināt difūzās emisijas ievērojamu samazināšanos.

56. Koksa krāšņu tilpuma pieauguma rezultātā samazinās kopējais krāšņu skaits, koksa krāšņu durvju atvēršanas operāciju skaits (koksa iekraušanas-izkraušanas operāciju skaits dienā), aizslēgu skaits koksa baterijā un tātad arī PAO emisija. Vienlaicīgi ekspluatācijas un darbaspēka izmaksu samazināšanās rezultātā palielinās darba ražīgums.

58. Visām tvertnēm un iekārtām ogļu darvas un ogļu darvas produktu uzglabāšanai un pārstrādei jābūt aprīkotām ar efektīvu tvaiku rekuperācijas un/vai tvaiku likvidēšanas sistēmu. Tvaiku likvidēšanas sistēmu ekspluatācijas izmaksas var samazināt, izmantojot autotermisku papildsadedzināšanu, ja oglekļa savienojumu koncentrācija atkritumos ir pietiekami augsta.

59. Informācija par PAO emisijas samazināšanas pasākumiem koksa ražošanas iekārtās apkopota 4.tabulā.

B. Anodu ražošana

60. PAO emisijas ierobežošanai, kura rodas anodu ražošanas procesā, jāpiemēro tie paši principi, kādus piemēro koksa ražošanā.

61. Ar PAO piesārņotu putekļu emisijas samazināšanai tiek izmantoti šādi sekundārie pasākumi:

(b) kombinēta tradicionālā elektrostatiskā darvas filtra izmantošana kopā ar mitro elektrostatisko filtru kā daudz efektīvāku tehnisku pasākumu;

(c) atgāzu termiska papildsadedzināšana;

(d) apstrāde sausajā skruberī, izmantojot kaļķakmeni/ naftas koksu vai alumīnija oksīdu (Al2O3).

62. Ar termisko papildsadedzināšanu saistītās ekspluatācijas izmaksas var tikt samazinātas autotermiskās papildsadedzināšanas režīmā, ja oglekļa savienojumu koncentrācija atgāzēs ir pietiekami augsta. 5.tabulā apkopota informācija par PAO emisijas ierobežošanas pasākumiem anodu ražošanā.

a paliekošā emisija salīdzinājumā ar variantu bez emisijas samazinājuma.

66. 6.tabulā apkopota informācija par PAO emisijas ierobežošanas pasākumiem alumīnija ražošanā.

a paliekošā emisija salīdzinājumā ar variantu bez emisijas samazinājuma.

D. Sadedzināšanas procesi dzīvojamā sektorā

69. Nodrošinot optimālu sadedzināšanas ātrumu, oglekļa monoksīda (CO), kopējā ogļūdeņražu (HC) un PAO emisija ir neliela. CO un kopējo HC emisijas robežvērtības noteikšana (noteikumi par tipa apstiprinājumu) ietekmē arī PAO emisiju. Zema CO un HC emisija nodrošina arī zemu PAO emisiju. Tā kā PAO emisijas mērījumi ir saistīti ar lielākām izmaksām, nekā CO mērījumi, daudz rentablāks risinājums ir robežvērtības noteikšana CO un HC emisijai. Tiek turpināts darbs pie priekšlikumu izstrādes CEN normatīvu noteikšanai katliem ar jaudu līdz 300kW, kuros kā kurināmo izmanto ogles un koksni (skat. 7.tabulu).

Piezīme: Emisijas līmeņi mg/m3, 10% O2.

70. Emisiju, kas rodas, izmantojot dzīvojamā sektorā ar koksni kurināmas krāsnis, var samazināt, īstenojot šādus pasākumus:

(a) esošajām krāsnīm – īstenojot sabiedrības informēšanas un apziņas celšanas programmas par krāšņu pareizu ekspluatāciju, par neapstrādātas koksnes izmantošanu, par kurināmā sagatavošanas veidiem un par pareizo gadalaiku koksnes sagatavošanai, ievērojot mitruma saturu tajā;

(b) jaunajām krāsnīm – piemērojot normatīvus, kas sniegti CEN normatīvu projektā (un līdzīgus normatīvus ASV un Kanādā).

71. Vispārīgāki pasākumi PAO emisijas samazināšanai ir tie, kas saistīti ar dzīvojamo telpu centralizētas siltumapgādes sistēmu un energotaupības attīstību, piemēram, uzlabota siltumizolācija, lai samazinātu enerģijas patēriņu.

72. Informācija apkopota 8.tabulā.

E. Iekārtas koksnes konservēšanai

73. Koksnes konservēšana ar akmeņogļu darvu, kas satur PAO, var būt lielākais PAO emisijas avots atmosfērā. Emisija var rasties gan paša apstrādes procesa laikā, gan arī uzglabājot, pārvietojot un izmantojot apstrādāto koksni āra apstākļos.

74. Visplašāk izmantotie akmeņogļu darvas produkti, kas satur PAO, ir karbolinejs un kreozoteļļa. Abi ir PAO saturoši akmeņogļu darvas destilēšanas produkti un tiek izmantoti kokmateriālu (koksnes) aizsardzībai pret bioloģisko iedarbību.

75. PAO emisiju, kas rodas no koksnes konservēšanas, iekārtām un uzglabāšanas telpām, var samazināt, izmantojot dažādas pieejas, kas īstenojamas vai nu atsevišķi vai kombinējot tās savā starpā, piemēram:

(a) atbilstošu uzglabāšanas apstākļu nodrošināšana, lai novērstu augsnes un virszemes ūdeņu piesārņošanu ar izskalotajiem PAO un piesārņotajiem lietus ūdeņiem (piemēram, uzglabāšanas vietu ūdensnecaurlaidības nodrošināšana, jumta seguma uzklāšana, piesārņoto ūdeņu atkārtota izmantošana koksnes konservēšanas procesam, izgatavoto materiālu kvalitātes prasību ievērošana);

(b) pasākumi, kas vērsti uz to, lai samazinātu emisiju gaisā no koksnes konservēšanas iekārtām (piemēram, uzkarsētās koksnes atdzesēšana no 90 ° C līdz vismaz 30 ° C pirms tās transportēšanas uz uzglabāšanas vietām. Tomēr kā LPT jāiesaka alternatīva metode, kas paredz koksnes impregnēšanai ar kreozoteļļu izmantot vakuuma apstākļos spiediena tvaiku);

(c) konservējošo vielu optimāla daudzuma izmantošanu, kas nodrošina pietiekamu apstrādātās koksnes aizsardzību in situ, var uzskatīt par LPT, jo šāds pasākums samazinās vajadzību pēc izstrādājumu nomaiņas un līdz ar to samazinās emisiju no koksnes konservēšanas iekārtām;

(d) izmantojot koksnes konservēšanas izstrādājumus ar zemāku PAO saturu, kuri ir NOP:

76. Sadedzinot ar konservantu apstrādātu koksni, izdalās PAO un citi kaitīgi savienojumi. Ja tomēr šādu koksni dedzina, tad jāizmanto iekārtas, kurās tiek izmantotas atbilstošas piesārņojuma samazināšanas metodes.

Robežvērtību un labāko pieejamo metožu piemērošanas termiņi ir:

(a) jauniem stacionāriem avotiem: divi gadi pēc šā Protokola spēkā stāšanās datuma;

(b) esošiem stacionāriem avotiem: astoņi gadi pēc šā Protokola spēkā stāšanās datuma. Ja nepieciešams, noteiktiem esošajiem stacionārajiem avotiem saskaņā ar valsts likumos noteikto amortizācijas periodu šis termiņš var tikt pagarināts.

1. Svarīgākās definīcijas sniegtas šā Protokola III pielikumā.

A. Sasniedzamie emisijas līmeņi jauniem transporta līdzekļiem

2. Ar dīzeļdegvielu darbināmi pasažieru automobiļi

3. Lieljaudas transportlīdzekļi

4. Satiksmē neizmantojamo transporta līdzekļu dzinēji

I. etaps (avots: ECE noteikumi Nr.96)*

* “Vienotie noteikumi, kas apstiprina dzinēju ar kompresijas aizdedzi uzstādīšanu uz lauksaimniecības un mežsaimniecības traktoriem, ņemot vērā dzinēja radīto piesārņotāju emisiju”. Noteikumi stājās spēkā 1995.gada 15.decembrī, bet labojumi tiem – 1997.gada 5.martā.

II. etaps

B. Degvielas parametri

5. Dīzeļdegviela

N.N.: nav noteikts.

* ar noteikšanas gada 1.janvāri.

** indikatīva vērtība.

7. 1.tabulā apkopota informācija par pasākumiem PHDD/F emisijas ierobežošanai motorizēto ceļu transporta līdzekļu izplūdes gāzēs.

A. NOP emisija no motorizētajiem transporta līdzekļiem

B. Kontrole un tehniskā apkope

10. Mobilajiem avotiem, kas darbojas, izmantojot dīzeļdegvielu, PAO emisijas ierobežošanas efektivitāte var tikt nodrošināta, īstenojot programmas, kas paredz mobilo avotu periodiskas pārbaudes attiecībā uz cieto daļiņu emisiju, izplūdes gāzu krāsu, nospiežot gāzes pedāli, vai citu līdzvērtīgu metožu izmantošanu.

11. Mobilajiem avotiem, kas darbojas, izmantojot benzīnu, PAO emisijas (papildus citiem izplūdes gāzu komponentiem) ierobežošanas efektivitāte var tikt nodrošināta, īstenojot programmas, kas paredz mobilo avotu periodiskas pārbaudes attiecībā uz degvielas padeves dozēšanu un katalizatoru darbības efektivitāti.

1. Ierobežošanas tehnoloģiju vispārīgie aspekti

2. Emisijas ierobežošanas tehniskie pasākumi

13. PAO emisijas ierobežošanai ir nozīmīgi šādi pasākumi:

(a) degvielas kvalitātes specifikācija un dzinēja modifikācija, lai ierobežotu emisiju, pirms tā radusies (primārie pasākumi);

(b) izplūdes gāzu attīrīšanas sistēmu uzstādīšana, piemēram, katalizatori-oksidētāji vai cieto daļiņu uztvērēji (sekundārie pasākumi).

(a) Dīzeļdzinēji

14. Dīzeļdegvielas modifikācijai var būt divi pozitīvi aspekti: zems sēra saturs dod iespēju samazināt cieto daļiņu emisiju un palielināt katalizatoru-oksidētāju pārveidošanas efektivitāti, bet di- un triaromātisko savienojumu apjoma samazināšana ļauj samazināt PAO veidošanos un emisiju.

16. Lai samazinātu cieto daļiņu emisiju, svarīgi ir nodrošināt smēreļļas lietošanas ierobežošanu, jo 10-50% cieto daļiņu veidojas motoreļļas izmantošanas rezultātā. Eļļas patēriņu iespējams samazināt, uzlabojot dzinēju ražošanas specifikāciju un uzlabojot dzinēju izolāciju.

(b) Benzīna dzinēji

18. Pasākumi PAO samazināšanai no benzīna dzinējiem galvenokārt balstās uz slēgtā cikla trīsvirzienu katalizatora izmantošanu, kurš samazina PAO apjomu visu HC samazināšanas ietvaros.

19. Darbības uzlabošana auksta dzinēja iedarbināšanas režīmā ļauj samazināt organisko vielu emisiju kopumā un it īpaši PAO emisiju (piemēram, izmantojot momentiedarbināšanas katalizatorus, uzlabojot degvielas izgarošanu/izsmidzināšanu, izmantojot apsildāmos katalizatorus).

20. 2.tabulā apkopota informācija par pasākumiem PAO emisijas ierobežošanai motorizēto ceļu transporta līdzekļu izplūdes gāzēs.

Šajā sarakstā nav ietvertas iekārtas vai iekārtu daļas jaunu produktu izpētei, izstrādei un izmēģinājumiem. Pilnīgāks kategoriju apraksts dots V pielikumā.

I.Apene, 7026508, Ingrida.Apene@vidm.gov.lv

L.Leja, 7026512, Linda.Leja@vidm.gov.lv

The Parties,

Determined to implement the Convention on Long-range Transboundary Air Pollution,

Recognizing that emissions of many persistent organic pollutants are transported across international boundaries and are deposited in Europe, North America and the Arctic, far from their site of origin, and that the atmosphere is the dominant medium of transport,

Aware that persistent organic pollutants resist degradation under natural conditions and have been associated with adverse effects on human health and the environment,

Concerned that persistent organic pollutants can biomagnify in upper trophic levels to concentrations which might affect the health of exposed wildlife and humans,

Acknowledging that the Arctic ecosystems and especially its indigenous people, who subsist on Arctic fish and mammals, are particularly at risk because of the biomagnification of persistent organic pollutants,

Mindful that measures to control emissions of persistent organic pollutants would also contribute to the protection of the environment and human health in areas outside the United Nations Economic Commission for Europe's region, including the Arctic and international waters,

Resolved to take measures to anticipate, prevent or minimize emissions of persistent organic pollutants, taking into account the application of the precautionary approach, as set forth in principle 15 of the Rio Declaration on Environment and Development,

Reaffirming that States have, in accordance with the Charter of the United Nations and the principles of international law, the sovereign right to exploit their own resources pursuant to their own environmental and development policies, and the responsibility to ensure that activities within their jurisdiction or control do not cause damage to the environment of other States or of areas beyond the limits of national jurisdiction,

Noting the need for global action on persistent organic pollutants and recalling the role envisaged in chapter 9 of Agenda 21 for regional agreements to reduce global transboundary air pollution and, in particular, for the United Nations Economic Commission for Europe to share its regional experience with other regions of the world,

Recognizing that there are subregional, regional and global regimes in place, including international instruments governing the management of hazardous wastes, their transboundary movement and disposal, in particular the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal,

Considering that the predominant sources of air pollution contributing to the accumulation of persistent organic pollutants are the use of certain pesticides, the manufacture and use of certain chemicals, and the unintentional formation of certain substances in waste incineration, combustion, metal production and mobile sources,

Aware that techniques and management practices are available to reduce emissions of persistent organic pollutants into the air,

Conscious of the need for a cost-effective regional approach to combating air pollution,

Noting the important contribution of the private and non-governmental sectors to knowledge of the effects associated with persistent organic pollutants, available alternatives and abatement techniques, and their role in assisting in the reduction of emissions of persistent organic pollutants,

Bearing in mind that measures taken to reduce persistent organic pollutant emissions should not constitute a means of arbitrary or unjustifiable discrimination or a disguised restriction on international competition and trade,

Taking into consideration existing scientific and technical data on emissions, atmospheric processes and effects on human health and the environment of persistent organic pollutants, as well as on abatement costs, and acknowledging the need to continue scientific and technical cooperation to further the understanding of these issues,

Recognizing the measures on persistent organic pollutants already taken by some of the Parties on a national level and/or under other international conventions,

Have agreed as follows:

Article 1

DEFINITIONS

For the purposes of the present Protocol,

1. "Convention" means the Convention on Long-range Transboundary Air Pollution, adopted in Geneva on 13 November 1979;

2. "EMEP" means the Cooperative Programme for Monitoring and Evaluation of the Long-range Transmission of Air Pollutants in Europe;

3. "Executive Body" means the Executive Body for the Convention constituted under article 10, paragraph 1, of the Convention;

4. "Commission" means the United Nations Economic Commission for Europe;

5. "Parties" means, unless the context otherwise requires, the Parties to the present Protocol;

6. "Geographical scope of EMEP" means the area defined in article 1, paragraph 4, of the Protocol to the 1979 Convention on Long-range Transboundary Air Pollution on Long-term Financing of the Cooperative Programme for Monitoring and Evaluation of the Long-range Transmission of Air Pollutants in Europe (EMEP), adopted in Geneva on 28 September 1984;

7. "Persistent organic pollutants" (POPs) are organic substances that: (i) possess toxic characteristics; (ii) are persistent; (iii) bioaccumulate; (iv) are prone to long-range transboundary atmospheric transport and deposition; and (v) are likely to cause significant adverse human health or environmental effects near to and distant from their sources;

8. "Substance" means a single chemical species, or a number of chemical species which form a specific group by virtue of (a) having similar properties and being emitted together into the environment; or (b) forming a mixture normally marketed as a single article;

9. "Emission" means the release of a substance from a point or diffuse source into the atmosphere;

10. "Stationary source" means any fixed building, structure, facility, installation, or equipment that emits or may emit any persistent organic pollutant directly or indirectly into the atmosphere;

11. "Major stationary source category" means any stationary source category listed in annex VIII;

12. "New stationary source" means any stationary source of which the construction or substantial modification is commenced after the expiry of two years from the date of entry into force of: (i) this Protocol; or (ii) an amendment to annex III or VIII, where the stationary source becomes subject to the provisions of this Protocol only by virtue of that amendment. It shall be a matter for the competent national authorities to decide whether a modification is substantial or not, taking into account such factors as the environmental benefits of the modification.

Article 2

OBJECTIVE

The objective of the present Protocol is to control, reduce or eliminate discharges, emissions and losses of persistent organic pollutants.

Article 3

BASIC OBLIGATIONS

1. Except where specifically exempted in accordance with article 4, each Party shall take effective measures:

        (a) To eliminate the production and use of the substances listed in annex I in accordance with the implementation requirements specified therein;

        (c) To restrict the substances listed in annex II to the uses described, in accordance with the implementation requirements specified therein.

2. The requirements specified in paragraph 1 (b) above shall become effective for each substance upon the date that production or use of that substance is eliminated, whichever is later.

3. For substances listed in annex I, II, or III, each Party should develop appropriate strategies for identifying articles still in use and wastes containing such substances, and shall take appropriate measures to ensure that such wastes and such articles, upon becoming wastes, are destroyed or disposed of in an environmentally sound manner.

4. For the purposes of paragraphs 1 to 3 above, the terms waste, disposal, and environmentally sound shall be interpreted in a manner consistent with the use of those terms under the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and their Disposal.

5. Each Party shall:

         (a) Reduce its total annual emissions of each of the substances listed in annex III from the level of the emission in a reference year set in accordance with that annex by taking effective measures, appropriate in its particular circumstances;

         (b) No later than the timescales specified in annex VI, apply:

6. In the case of residential combustion sources, the obligations set out in paragraph 5 (b) (i) and (iii) above shall refer to all stationary sources in that category taken together.

7. Where a Party, after the application of paragraph 5 (b) above, cannot achieve the requirements of paragraph 5 (a) above for a substance specified in annex III, it shall be exempted from its obligations in paragraph 5 (a) above for that substance.

8. Each Party shall develop and maintain emission inventories for the substances listed in annex III, and shall collect available information relating to the production and sales of the substances listed in annexes I and II, for those Parties within the geographical scope of EMEP, using, as a minimum, the methodologies and the spatial and temporal resolution specified by the Steering Body of EMEP, and, for those Parties outside the geographical scope of EMEP, using as guidance the methodologies developed through the work plan of the Executive Body. It shall report this information in accordance with the reporting requirements set out in article 9 below.

Article 4

EXEMPTIONS

1. Article 3, paragraph 1, shall not apply to quantities of a substance to be used for laboratory-scale research or as a reference standard.

2. A Party may grant an exemption from article 3, paragraphs 1 (a) and (c), in respect of a particular substance, provided that the exemption is not granted or used in a manner that would undermine the objectives of the present Protocol, and only for the following purposes and under the following conditions:

        (a) For research other than that referred to in paragraph 1 above, if:

    (b) To manage as necessary a public health emergency, if:

    (c) For a minor application judged to be essential by the Party, if:

            (i) The exemption is granted for a maximum of five years;

            (iii) No suitable alternatives exist for the proposed use;

3. Each Party shall, no later than ninety days after granting an exemption under paragraph 2 above, provide the secretariat with, as a minimum, the following information:

    (a) The chemical name of the substance subject to the exemption;

    (b) The purpose for which the exemption has been granted;

    (c) The conditions under which the exemption has been granted;

    (d) The length of time for which the exemption has been granted;

    (e) Those to whom, or the organization to which, the exemption applies; and

    (f) For an exemption granted under paragraphs 2 (a) and (c) above, the estimated emissions of the substance as a result of the exemption and an assessment of their contribution to the total emissions of the substance from the Parties.

4. The secretariat shall make available to all Parties the information received under paragraph 3 above.

Article 5

EXCHANGE OF INFORMATION AND TECHNOLOGY

The Parties shall, in a manner consistent with their laws, regulations and practices, create favourable conditions to facilitate the exchange of information and technology designed to reduce the generation and emission of persistent organic pollutants and to develop cost-effective alternatives, by promoting, inter alia:

        (a) Contacts and cooperation among appropriate organizations and individuals in the private and public sectors that are capable of providing technology, design and engineering services, equipment or finance;

        (b) The exchange of and access to information on the development and use of alternatives to persistent organic pollutants as well as on the evaluation of the risks that such alternatives pose to human health and the environment, and information on the economic and social costs of such alternatives;

        (c) The compilation and regular updating of lists of their designated authorities engaged in similar activities in other international forums;

        (d) The exchange of information on activities conducted in other international forums.

Article 6

PUBLIC AWARENESS

The Parties shall, consistent with their laws, regulations and practices, promote the provision of information to the general public, including individuals who are direct users of persistent organic pollutants. This information may include, inter alia:

        (a) Information, including labelling, on risk assessment and hazard;

        (b) Information on risk reduction;

        (c) Information to encourage the elimination of persistent organic pollutants or a reduction in their use, including, where appropriate, information on integrated pest management, integrated crop management and the economic and social impacts of this elimination or reduction; and

        (d) Information on alternatives to persistent organic pollutants, as well as an evaluation of the risks that such alternatives pose to human health and the environment, and information on the economic and social impacts of such alternatives.

Article 7

STRATEGIES, POLICIES, PROGRAMMES, MEASURES AND INFORMATION

1. Each Party shall, no later than six months after the date on which this Protocol enters into force for it, develop strategies, policies and programmes in order to discharge its obligations under the present Protocol.

2. Each Party shall:

        (a) Encourage the use of economically feasible, environmentally sound management techniques, including best environmental practices, with respect to all aspects of the use, production, release, processing, distribution, handling, transport and reprocessing of substances subject to the present Protocol and manufactured articles, mixtures or solutions containing such substances;

        (b) Encourage the implementation of other management programmes to reduce emissions of persistent organic pollutants, including voluntary programmes and the use of economic instruments;

        (c) Consider the adoption of additional policies and measures as appropriate in its particular circumstances, which may include non-regulatory approaches;

        (d) Make determined efforts that are economically feasible to reduce levels of substances subject to the present Protocol that are contained as contaminants in other substances, chemical products or manufactured articles, as soon as the relevance of the source has been established;

        (e) Take into consideration in its programmes for evaluating substances, the characteristics specified in paragraph 1 of Executive Body decision 1998/2 on information to be submitted and procedures for adding substances to annex I, II or III, including any amendments thereto.

3. The Parties may take more stringent measures than those required by the present Protocol.

Article 8

RESEARCH, DEVELOPMENT AND MONITORING

The Parties shall encourage research, development, monitoring and cooperation related, but not limited, to:

        (a) Emissions, long-range transport and deposition levels and their modelling, existing levels in the biotic and abiotic environment, the elaboration of procedures for harmonizing relevant methodologies;

        (b) Pollutant pathways and inventories in representative ecosystems;

        (c) Relevant effects on human health and the environment, including quantification of those effects;

        (d) Best available techniques and practices, including agricultural practices, and emission control techniques and practices currently employed by the Parties or under development;

        (e) Methodologies permitting consideration of socio-economic factors in the evaluation of alternative control strategies;

        (f) An effects-based approach which integrates appropriate information, including information obtained under subparagraphs (a) to (e) above, on measured or modelled environmental levels, pathways, and effects on human health and the environment, for the purpose of formulating future control strategies which also take into account economic and technological factors;

        (g) Methods for estimating national emissions and projecting future emissions of individual persistent organic pollutants and for evaluating how such estimates and projections can be used to structure future obligations;

        (h) Levels of substances subject to the present Protocol that are contained as contaminants in other substances, chemical products or manufactured articles and the significance of these levels for long-range transport, as well as techniques to reduce levels of these contaminants, and, in addition, levels of persistent organic pollutants generated during the life cycle of timber treated with pentachlorophenol.

Priority should be given to research on substances considered to be the most likely to be submitted under the procedures specified in article 14, paragraph 6.

Article 9

REPORTING

1. Subject to its laws governing the confidentiality of commercial information:

        (a) Each Party shall report, through the Executive Secretary of the Commission, to the Executive Body, on a periodic basis as determined by the Parties meeting within the Executive Body, information on the measures that it has taken to implement the present Protocol;

        (b) Each Party within the geographical scope of EMEP shall report, through the Executive Secretary of the Commission, to EMEP, on a periodic basis to be determined by the Steering Body of EMEP and approved by the Parties at a session of the Executive Body, information on the levels of emissions of persistent organic pollutants using, as a minimum, the methodologies and the temporal and spatial resolution specified by the Steering Body of EMEP.  Parties in areas outside the geographical scope of EMEP shall make available similar information to the Executive Body if requested to do so. Each Party shall also provide information on the levels of emissions of the substances listed in annex III for the reference year specified in that annex.

2. The information to be reported in accordance with paragraph 1 (a) above shall be in conformity with a decision regarding format and content to be adopted by the Parties at a session of the Executive Body. The terms of this decision shall be reviewed as necessary to identify any additional elements regarding the format or the content of the information that is to be included in the reports.

3. In good time before each annual session of the Executive Body, EMEP shall provide information on the long-range transport and deposition of persistent organic pollutants.

Article 10

REVIEWS BY THE PARTIES AT SESSIONS OF THE EXECUTIVE BODY

1. The Parties shall, at sessions of the Executive Body, pursuant to article 10, paragraph 2 (a), of the Convention, review the information supplied by the Parties, EMEP and other subsidiary bodies, and the reports of the Implementation Committee referred to in article 11 of the present Protocol.

2. The Parties shall, at sessions of the Executive Body, keep under review the progress made towards achieving the obligations set out in the present Protocol.

3. The Parties shall, at sessions of the Executive Body, review the sufficiency and effectiveness of the obligations set out in the present Protocol. Such reviews will take into account the best available scientific information on the effects of the deposition of persistent organic pollutants, assessments of technological developments, changing economic conditions and the fulfilment of the obligations on emission levels. The procedures, methods and timing for such reviews shall be specified by the Parties at a session of the Executive Body. The first such review shall be completed no later than three years after the present Protocol enters into force.

Article 11

COMPLIANCE

Compliance by each Party with its obligations under the present Protocol shall be reviewed regularly. The Implementation Committee established by decision 1997/2 of the Executive Body at its fifteenth session shall carry out such reviews and report to the Parties meeting within the Executive Body in accordance with the terms of the annex to that decision, including any amendments thereto.

Article 12

SETTLEMENT OF DISPUTES

1. In the event of a dispute between any two or more Parties concerning the interpretation or application of the present Protocol, the Parties concerned shall seek a settlement of the dispute through negotiation or any other peaceful means of their own choice. The parties to the dispute shall inform the Executive Body of their dispute.

2. When ratifying, accepting, approving or acceding to the present Protocol, or at anytime thereafter, a Party which is not a regional economic integration organization may declare in a written instrument submitted to the Depositary that, in respect of any dispute concerning the interpretation or application of the Protocol, it recognizes one or both of the following means of dispute settlement as compulsory ipso facto and without special agreement, in relation to any Party accepting the same obligation:

        (a) Submission of the dispute to the International Court of Justice;

        (b) Arbitration in accordance with procedures to be adopted by the Parties at a session of the Executive Body, as soon as practicable, in an annex on arbitration.

A Party which is a regional economic integration organization may make a declaration with like effect in relation to arbitration in accordance with the procedures referred to in subparagraph (b) above.

3. A declaration made under paragraph 2 above shall remain in force until it expires in accordance with its terms or until three months after written notice of its revocation has been deposited with the Depositary.

4. A new declaration, a notice of revocation or the expiry of a declaration shall not in any way affect proceedings pending before the International Court of Justice or the arbitral tribunal, unless the parties to the dispute agree otherwise.

5. Except in a case where the parties to a dispute have accepted the same means of dispute settlement under paragraph 2, if after twelve months following notification by one Party to another that a dispute exists between them, the Parties concerned have not been able to settle their dispute through the means mentioned in paragraph 1 above, the dispute shall be submitted, at the request of any of the parties to the dispute, to conciliation.

6. For the purpose of paragraph 5, a conciliation commission shall be created. The commission shall be composed of equal numbers of members appointed by each Party concerned or, where the Parties in conciliation share the same interest, by the group sharing that interest, and a chairperson chosen jointly by the members so appointed. The commission shall render a recommendatory award, which the Parties shall consider in good faith.

Article 13

ANNEXES

The annexes to the present Protocol shall form an integral part of the Protocol. Annexes V and VII are recommendatory in character.

Article 14

AMENDMENTS

1. Any Party may propose amendments to the present Protocol.

2. Proposed amendments shall be submitted in writing to the Executive Secretary of the Commission, who shall communicate them to all Parties. The Parties meeting within the Executive Body shall discuss the proposed amendments at its next session, provided that the proposals have been circulated by the Executive Secretary to the Parties at least ninety days in advance.

3. Amendments to the present Protocol and to annexes I to IV, VI and VIII shall be adopted by consensus of the Parties present at a session of the Executive Body, and shall enter into force for the Parties which have accepted them on the ninetieth day after the date on which two thirds of the Parties have deposited with the Depositary their instruments of acceptance thereof. Amendments shall enter into force for any other Party on the ninetieth day after the date on which that Party has deposited its instrument of acceptance thereof.

4. Amendments to annexes V and VII shall be adopted by consensus of the Parties present at a session of the Executive Body. On the expiry of ninety days from the date of its communication to all Parties by the Executive Secretary of the Commission, an amendment to any such annex shall become effective for those Parties which have not submitted to the Depositary a notification in accordance with the provisions of paragraph 5 below, provided that at least sixteen Parties have not submitted such a notification.

5. Any Party that is unable to approve an amendment to annex V or VII shall so notify the Depositary in writing within ninety days from the date of the communication of its adoption. The Depositary shall without delay notify all Parties of any such notification received. A Party may at any time substitute an acceptance for its previous notification and, upon deposit of an instrument of acceptance with the Depositary, the amendment to such an annex shall become effective for that Party.

6. In the case of a proposal to amend annex I, II, or III by adding a substance to the present Protocol:

        (a) The proposer shall provide the Executive Body with the information specified in Executive Body decision 1998/2, including any amendments thereto; and

        (b) The Parties shall evaluate the proposal in accordance with the procedures set forth in Executive Body decision 1998/2, including any amendments thereto.

7. Any decision to amend Executive Body decision 1998/2 shall be taken by consensus of the Parties meeting within the Executive Body and shall take effect sixty days after the date of adoption.

Article 15

SIGNATURE

1. The present Protocol shall be open for signature at Aarhus (Denmark) from 24 to 25 June 1998, then at United Nations Headquarters in New York until 21 December 1998, by States members of the Commission as well as States having consultative status with the Commission pursuant to paragraph 8 of Economic and Social Council resolution 36 (IV) of 28 March 1947, and by regional economic integration organizations, constituted by sovereign States members of the Commission, which have competence in respect of the negotiation, conclusion and application of international agreements in matters covered by the Protocol, provided that the States and organizations concerned are Parties to the Convention.

2. In matters within their competence, such regional economic integration organizations shall, on their own behalf, exercise the rights and fulfil the responsibilities which the present Protocol attributes to their member States. In such cases, the member States of these organizations shall not be entitled to exercise such rights individually.

Article 16

RATIFICATION, ACCEPTANCE, APPROVAL AND ACCESSION

1. The present Protocol shall be subject to ratification, acceptance or approval by Signatories.

2. The present Protocol shall be open for accession as from 21 December 1998 by the States and organizations that meet the requirements of article 15, paragraph 1.

Article17

DEPOSITARY

The instruments of ratification, acceptance, approval or accession shall be deposited with the Secretary-General of the United Nations, who will perform the functions of Depositary.

Article 18

ENTRY INTO FORCE

1. The present Protocol shall enter into force on the ninetieth day following the date on which the sixteenth instrument of ratification, acceptance, approval or accession has been deposited with the Depositary.

2. For each State and organization referred to in article 15, paragraph 1, which ratifies, accepts or approves the present Protocol or accedes thereto after the deposit of the sixteenth instrument of ratification, acceptance, approval or accession, the Protocol shall enter into force on the ninetieth day following the date of deposit by such Party of its instrument of ratification, acceptance, approval or accession.

Article 19

WITHDRAWAL

At any time after five years from the date on which the present Protocol has come into force with respect to a Party, that Party may withdraw from it by giving written notification to the Depositary. Any such withdrawal shall take effect on the ninetieth day following the date of its receipt by the Depositary, or on such later date as may be specified in the notification of the withdrawal.

Article 20

AUTHENTIC TEXTS

The original of the present Protocol, of which the English, French and Russian texts are equally authentic, shall be deposited with the Secretary-General of the United Nations.

IN WITNESS WHEREOF the undersigned, being duly authorized thereto, have signed the present Protocol.

Done at Aarhus (Denmark), this twenty-fourth day of June, one thousand nine hundred and ninety-eight.

ANNEX I

Unless otherwise specified in the present Protocol, this annex shall not apply to the substances listed below when they occur: (i) as contaminants in products; or (ii) in articles manufactured or in use by the implementation date; or (iii) as site-limited chemical intermediates in the manufacture of one or more different substances and are thus chemically transformed. Unless otherwise specified, each obligation below is effective upon the date of entry into force of the Protocol.

ANNEX II

Unless otherwise specified in the present Protocol, this annex shall not apply to the substances listed below when they occur: (i) as contaminants in products; or (ii) in articles manufactured or in use by the implementation date; or (iii) as site-limited chemical intermediates in the manufacture of one or more different substances and are thus chemically transformed. Unless otherwise specified, each obligation below is effective upon the date of entry into force of the Protocol.

a/ The Parties agree to reassess under the Protocol by 31 December 2004 the production and use of polychlorinated terphenyls and "ugilec".

ANNEX III

SUBSTANCES REFERRED TO IN ARTICLE 3, PARAGRAPH 5 (a), AND THE REFERENCE YEAR FOR THE OBLIGATION

a/ Polycyclic aromatic hydrocarbons (PAHs): For the purposes of emission inventories, the following four indicator compounds shall be used: benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, and indeno(1,2,3-cd)pyrene.

b/ Dioxins and furans (PCDD/F): Polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) are tricyclic, aromatic compounds formed by two benzene rings which are connected by two oxygen atoms in PCDD and by one oxygen atom in PCDF and the hydrogen atoms of which may be replaced by up to eight chlorine atoms.

ANNEX IV

1. A definition of dioxins and furans (PCDD/F) is provided in annex III to the present Protocol.

2. Limit values are expressed as ng/m3 or mg/m3 under standard conditions (273.15 K, 101.3 kPa, and dry gas).

3. Limit values relate to the normal operating situation, including start-up and shutdown procedures, unless specific limit values have been defined for those situations.

4. Sampling and analysis of all pollutants shall be carried out according to the standards laid down by the Comité européen de normalisation (CEN), the International Organization for Standardization (ISO), or the corresponding United States or Canadian reference methods. While awaiting the development of CEN or ISO standards, national standards shall apply.

5. For verification purposes, the interpretation of measurement results in relation to the limit value must also take into account the inaccuracy of the measurement method. A limit value is considered to be met if the result of the measurement, from which the inaccuracy of the measurement method is subtracted, does not exceed it.

6. Emissions of different congeners of PCDD/F are given in toxicity equivalents (TE) in comparison to 2,3,7,8-TCDD using the system proposed by the NATO Committee on the Challenges of Modern Society (NATO-CCMS) in 1988.

7. The following limit values, which refer to 11% O2 concentration in flue gas, apply to the following incinerator types:

Municipal solid waste (burning more than 3 tonnes per hour)

0.1 ng TE/m3

Medical solid waste (burning more than 1 tonne per hour)

0.5 ng TE/m3 

Hazardous waste (burning more than 1 tonne per hour)

0.2 ng TE/m3

ANNEX V

BEST AVAILABLE TECHNIQUES TO CONTROL EMISSIONS OF PERSISTENT ORGANIC POLLUTANTS FROM MAJOR STATIONAER SOURCES

1. The purpose of this annex is to provide the Parties to the Convention with guidance in identifying best available techniques to allow them to meet the obligations in article 3, paragraph 5, of the Protocol.

2. "Best available techniques" (BAT) means the most effective and advanced stage in the development of activities and their methods of operation which indicate the practical suitability of particular techniques for providing in principle the basis for emission limit values designed to prevent and, where that is not practicable, generally to reduce emissions and their impact on the environment as a whole:

         - ‘Techniques' includes both the technology used and the way in which the installation is designed, built, maintained, operated and decommissioned;

         - ‘Available' techniques means those developed on a scale which allows implementation in the relevant industrial sector, under economically and technically viable conditions, taking into consideration the costs and advantages, whether or not the techniques are used or produced inside the territory of the Party in question, as long as they are reasonably accessible to the operator;

         - ‘Best' means most effective in achieving a high general level of protection of the environment as a whole.

In determining the best available techniques, special consideration should be given, generally or in specific cases, to the factors below, bearing in mind the likely costs and benefits of a measure and the principles of precaution and prevention:

         - The use of low-waste technology;

         - The use of less hazardous substances;

         - The furthering of recovery and recycling of substances generated and used in the process and of waste;

         - Comparable processes, facilities or methods of operation which have been tried with success on an industrial scale;

         - Technological advances and changes in scientific knowledge and understanding;

         - The nature, effects and volume of the emissions concerned;

         - The commissioning dates for new or existing installations;

         - The time needed to introduce the best available technique;

         - The consumption and nature of raw materials (including water) used in the process and its energy efficiency;

         - The need to prevent or reduce to a minimum the overall impact of the emissions on the environment and the risks to it;

         - The need to prevent accidents and to minimize their consequences for the environment.

The concept of best available techniques is not aimed at the prescription of any specific technique or technology, but at taking into account the technical characteristics of the installation concerned, its geographical location and the local environmental conditions.

3. Information regarding the effectiveness and costs of control measures is based on documents received and reviewed by the Task Force and the Preparatory Working Group on POPs. Unless otherwise indicated, the techniques listed are considered to be well established on the basis of operational experience.

4. Experience with new plants incorporating low-emission techniques, as well as with retrofitting of existing plants, is continuously growing. The regular elaboration and amendment of the annex will therefore be necessary. Best available techniques (BAT) identified for new plants can usually be applied to existing plants provided there is an adequate transition period and they are adapted.

5. The annex lists a number of control measures which span a range of costs and efficiencies. The choice of measures for any particular case will depend on a number of factors, including economic circumstances, technological infrastructure and capacity, and any existing air pollution control measures.

6. The most important POPs emitted from stationary sources are:

         (a) Polychlorinated dibenzo-p-dioxins/furans (PCDD/F);

         (b) Hexachlorobenzene (HCB);

         (c) Polycyclic aromatic hydrocarbons (PAHs).

Relevant definitions are provided in annex III to the present Protocol.

7. PCDD/F are emitted from thermal processes involving organic matter and chlorine as a result of incomplete combustion or chemical reactions. Major stationary sources of PCDD/F may be as follows:

         (a) Waste incineration, including co-incineration;

         (b) Thermal metallurgical processes, e.g. production of aluminium and other non-ferrous metals, iron and steel;

         (c) Combustion plants providing energy;

         (d) Residential combustion; and

         (e) Specific chemical production processes releasing intermediates and by-products.

8. Major stationary sources of PAH emissions may be as follows:

         (a) Domestic wood and coal heating;

         (b) Open fires such as refuse burning, forest fires and after-crop burning;

         (c) Coke and anode production;

         (d) Aluminium production (via Soederberg process); and

         (e) Wood preservation installations, except for a Party for which this category does not make a significant contribution to its total emissions of PAH (as defined in annex III).

9. Emissions of HCB result from the same type of thermal and chemical processes as those emitting PCDD/F, and HCB is formed by a similar mechanism. Major sources of HCB emissions may be as follows:

         (a) Waste incineration plants, including co-incineration;

         (b) Thermal sources of metallurgical industries; and

         (c) Use of chlorinated fuels in furnace installations.

10. There are several approaches to the control or prevention of POP emissions from stationary sources. These include the replacement of relevant feed materials, process modifications (including maintenance and operational control) and retrofitting existing plants. The following list provides a general indication of available measures, which may be implemented either separately or in combination:

         (a) Replacement of feed materials which are POPs or where there is a direct link between the materials and POP emissions from the source;

         (b) Best environmental practices such as good housekeeping, preventive maintenance programmes, or process changes such as closed systems (for instance in cokeries or use of inert electrodes for electrolysis);

         (c) Modification of process design to ensure complete combustion, thus preventing the formation of persistent organic pollutants, through the control of parameters such as incineration temperature or residence time;

         (d) Methods for flue-gas cleaning such as thermal or catalytic incineration or oxidation, dust precipitation, adsorption;

         (e) Treatment of residuals, wastes and sewage sludge by, for example, thermal treatment or rendering them inert.

11. The emission levels given for different measures in tables 1, 2, 4, 5, 6, 8, and 9 are generally case-specific. The figures or ranges give the emission levels as a percentage of the emission limit values using conventional techniques.

12. Cost-efficient considerations may be based on total costs per year per unit of abatement (including capital and operational costs). POP emission reduction costs should also be considered within the framework of the overall process economics, e.g. the impact of control measures and costs of production. Given the many influencing factors, investment and operating cost figures are highly case-specific.

A. Waste incineration

13. Waste incineration includes municipal waste, hazardous waste, medical waste and sewage sludge incineration.

14. The main control measures for PCDD/F emissions from waste incineration facilities are:

         (a) Primary measures regarding incinerated wastes;

         (b) Primary measures regarding process techniques;

         (c) Measures to control physical parameters of the combustion process and waste gases (e.g. temperature stages, cooling rate, O2 content, etc.);

         (d) Cleaning of the flue gas; and

         (e) Treatment of residuals from the cleaning process.

15. The primary measures regarding the incinerated wastes, involving the management of feed material by reducing halogenated substances and replacing them by non-halogenated alternatives, are not appropriate for municipal or hazardous waste incineration. It is more effective to modify the incineration process and install secondary measures for flue-gas cleaning. The management of feed material is a useful primary measure for waste reduction and has the possible added benefit of recycling. This may result in indirect PCDD/F reduction by decreasing the waste amounts to be incinerated.

16. The modification of process techniques to optimize combustion conditions is an important and effective measure for the reduction of PCDD/F emissions (usually 850°C or higher, assessment of oxygen supply depending on the heating value and consistency of the wastes, sufficient residence time -- 850°C for ca. 2 sec -- and turbulence of the gas, avoidance of cold gas regions in the incinerator, etc.). Fluidized bed incinerators keep a lower temperature than 850°C with adequate emission results. For existing incinerators this would normally involve redesigning and/or replacing a plant -- an option which may not be economically viable in all countries. The carbon content in ashes should be minimized.

17. Flue gas measures. The following measures are possibilities for lowering reasonably effectively the PCDD/F content in the flue gas. The de novo synthesis takes place at about 250 to 450°C. These measures are a prerequisite for further reductions to achieve the desired levels at the end of the pipe:

         (a) Quenching the flue gases (very effective and relatively inexpensive);

         (b) Adding inhibitors such as triethanolamine or triethylamine (can reduce oxides of nitrogen as well), but side-reactions have to be considered for safety reasons;

         (c) Using dust collection systems for temperatures between 800 and 1000°C, e.g. ceramic filters and cyclones;

         (d) Using low-temperature electric discharge systems; and

         (e) Avoiding fly ash deposition in the flue gas exhaust system.

18. Methods for cleaning the flue gas are:

         (a) Conventional dust precipitators for the reduction of particle-bound PCDD/F;

         (b) Selective catalytic reduction (SCR) or selective non-catalytic reduction (SNCR);

         (c) Adsorption with activated charcoal or coke in fixed or fluidized systems;

         (d) Different types of adsorption methods and optimized scrubbing systems with mixtures of activated charcoal, open hearth coal, lime and limestone solutions in fixed bed, moving bed and fluidized bed reactors. The collection efficiency for gaseous PCDD/F can be improved with the use of a suitable pre-coat layer of activated coke on the surface of a bag filter;

         (e) H2O2-oxidation;

         (f) Catalytic combustion methods using different types of catalysts (i.e. Pt/Al2O3 or copper-chromite catalysts with different promoters to stabilize the surface area and to reduce ageing of the catalysts).

19. The methods mentioned above are capable of reaching emission levels of 0.1 ng TE/m3 PCDD/F in the flue gas. However, in systems using activated charcoal or coke adsorbers/filters care must be taken to ensure that fugitive carbon dust does not increase PCDD/F emissions downstream. Also, it should be noted that adsorbers and dedusting installations prior to catalysts (SCR technique) yield PCDD/F-laden residues, which need to be reprocessed or require proper disposal.

20. A comparison between the different measures to reduce PCDD/F in flue gas is very complex. The resulting matrix includes a wide range of industrial plants with different capacities and configuration. Cost parameters include the reduction measures for minimizing other pollutants as well, such as heavy metals (particle-bound or not particle-bound). A direct relation for the reduction in PCDD/F emissions alone cannot, therefore, be isolated in most cases. A summary of the available data for the various control measures is given in table 1.

a/ Remaining emission compared to unreduced mode.

21. Medical waste incinerators may be a major source of PCDD/F in many countries. Specific medical wastes such as human anatomical parts, infected waste, needles, blood, plasma and cytostatica are treated as a special form of hazardous waste, while other medical wastes are frequently incinerated on-site in a batch operation. Incinerators operating with batch systems can meet the same requirements for PCDD/F reduction as other waste incinerators.

22. Parties may wish to consider adopting policies to encourage the incineration of municipal and medical waste in large regional facilities rather than in smaller ones. This approach may make the application of BAT more cost-effective.

23. The treatment of residuals from the flue-gas cleaning process. Unlike incinerator ashes, these residuals contain relatively high concentrations of heavy metals, organic pollutants (including PCDD/F), chlorides and sulphides. Their method of disposal, therefore, has to be well controlled. Wet scrubber systems in particular produce large quantities of acidic, contaminated liquid waste. Some special treatment methods exist. They include:

         (a) The catalytic treatment of fabric filter dusts under conditions of low temperatures and lack of oxygen;

         (b) The scrubbing of fabric filter dusts by the 3-R process (extraction of heavy metals by acids and combustion for destruction of organic matter);

        (c) The vitrification of fabric filter dusts;

        (d) Further methods of immobilization; and

        (e) The application of plasma technology.

B. Thermal processes in the metallurgical industry

24. Specific processes in the metallurgical industry may be important remaining sources of PCDD/F emissions. These are:

        (a) Primary iron and steel industry (e.g. blast furnaces, sinter plants, iron pelletizing);

        (b) Secondary iron and steel industry; and

        (c) Primary and secondary non-ferrous metal industry (production of copper).

PCDD/F emission control measures for the metallurgical industries are summarized in table 2.

25. Metal production and treatment plants with PCDD/F emissions can meet a maximum emission concentration of 0.1 ng TE/m3 (if waste gas volume flow > 5000 m3/h) using control measures.

a/ Remaining emission compared to unreduced mode.

Sinter plants

26. Measurements at sinter plants in the iron and steel industry have generally shown PCDD/F emissions in the range of 0.4 to 4 ng TE/m3. A single measurement at one plant without any control measures showed an emission concentration of 43 ng TE/m3.

27. Halogenated compounds may result in the formation of PCDD/F if they enter sinter plants in the feed materials (coke breeze, salt content in the ore) and in added recycled material (e.g. millscale, blast furnace top gas dust, filter dusts and sludges from waste water treatment). However, similarly to waste incineration, there is no clear link between the chlorine content of the feed materials and emissions of PCDD/F. An appropriate measure may be the avoidance of contaminated residual material and de-oiling or degreasing of millscale prior to its introduction into the sinter plant.

28. The most effective PCDD/F emission reduction can be achieved using a combination of different secondary measures, as follows:

        (a) Recirculating waste gas significantly reduces PCDD/F emissions. Furthermore, the waste gas flow is reduced significantly, thereby reducing the cost of installing any additional end-of-pipe control systems;

        (b) Installing fabric filters (in combination with electrostatic precipitators in some cases) or electrostatic precipitators with the injection of activated carbon/open-hearth coal/limestone mixtures into the waste gas;

        (c) Scrubbing methods have been developed which include pre-quenching of the waste gas, leaching by high-performance scrubbing and separation by drip deposition. Emissions of 0.2 to 0.4 ng TE/m3 can be achieved. By adding suitable adsorption agents like lignite coal cokes/coal slack, an emission concentration of 0.1 ng TE/m3 can be reached.

Primary and secondary production of copper

29. Existing plants for the primary and secondary production of copper can achieve a PCDD/F emission level of a few picograms to 2 ng TE/m3 after flue-gas cleaning. A single copper shaft furnace emitted up to 29 ng TE/m3 PCDD/F before optimization of the aggregates. Generally, there is a wide range of PCDD/F emission values from these plants because of the large differences in raw materials used in differing aggregates an d processes.

30. Generally, the following measures are suitable for reducing PCDD/F emissions:

        (a) Pre-sorting scrap;

        (b) Pretreating scrap, for example stripping of plastic or PVC coatings, pretreating cable scrap using only cold/mechanical methods;

        (c) Quenching hot waste gases (providing utilization of heat), to reduce residence time in the critical region of temperature in the waste gas system;

        (d) Using oxygen or oxygen-enriched air in firing, or oxygen injection in the shaft kiln (providing complete combustion and minimization of waste gas volume);

        (e) Adsorption in a fixed bed reactor or fluidized jet stream reactor with activated charcoal or open-hearth coal dust; and

        (f) Catalytic oxidation.

Production of steel

31. PCDD/F emissions from converter steelworks for steel production and from hot blast cupola furnaces, electric furnaces and electric arc furnaces for the melting of cast iron are significantly lower than 0.1 ng TE/m3. Cold-air furnaces and rotary tube furnaces (melting of cast iron) have higher PCDD/F emissions.

32. Electric arc furnaces used in secondary steel production can achieve an emission concentration value of 0.1 ng TE/m3 if the following measures are used:

        (a) Separate collection of emissions from loading and discharging; and

        (b) Use of a fabric filter or an electrostatic precipitator in combination with coke injection.

33. The feedstock to electric arc furnaces often contains oils, emulsions or greases. General primary measures for PCDD/F reduction can be sorting, de-oiling and de-coating of scraps, which may contain plastics, rubber, paints, pigments and vulcanizing additives.

Smelting plants in the secondary aluminium industry

34. PCDD/F emissions from smelting plants in the secondary aluminium industry are in the range of approximately 0.1 to 14 ng TE/m3. These levels depend on the type of smelting aggregates, materials used and waste gas purification techniques employed.

35. In summary, single- and multi-stage fabric filters with the addition of limestone/activated carbon/open-hearth coal in front of the filter meet the emission concentration of 0.1 ng TE/m3, with reduction efficiencies of 99%.

36. The following measures can also be considered:

        (a) Minimizing and separately removing and purifying differently contaminated waste gas flows;

        (b) Avoiding waste gas particle deposition;

        (c) Rapidly passing the critical temperature range;

        (d) Improving the pre-sorting of scrap aluminium from shredders by using swim-sink separation techniques and grading through whirling stream deposition; and

        (e) Improving the pre-cleaning of scrap aluminium by swarf decoating and swarf drying.

37. Options (d) and (e) are important because it is unlikely that modern fluxless smelting techniques (which avoid halide salt fluxes) will be able to handle the low-grade scrap that can be used in rotary kilns.

38. Discussions are continuing under the Convention for the Protection of the Marine Environment of the North-east Atlantic regarding the revision of an earlier recommendation to phase out the use of hexachloroethane in the aluminium industry.

39. The melt can be treated using state-of-the-art technology, for example with nitrogen/chlorine mixtures in the ratio of between 9:1 and 8:2, gas injection equipment for fine dispersion and nitrogen pre- and post-flushing and vacuum degreasing. For nitrogen/chlorine mixtures, a PCDD/F emission concentration of about 0.03 ng TE/m3 was measured (as compared to values of  > 1 ng TE/m3 for treatment with chlorine only). Chlorine is required for the removal of magnesium and other undesired components.

C. Combustion of fossil fuels in utility and industrial boilers

40. In the combustion of fossil fuels in utility and industrial boilers (>50 MW thermal capacity), improved energy efficiency and energy conservation will result in a decline in the emissions of all pollutants because of reduced fuel requirements. This will also result in a reduction in PCDD/F emissions. It would not be cost-effective to remove chlorine from coal or oil, but in any case the trend towards gas-fired stations will help to reduce PCDD/F emissions from this sector.

41. It should be noted that PCDD/F emissions could increase significantly if waste material (sewage sludge, waste oil, rubber wastes, etc.) is added to the fuel. The combustion of wastes for energy supply should be undertaken only in installations using waste gas purification systems with highly efficient PCDD/F reduction (described in section A above).

42. The application of techniques to reduce emissions of nitrogen oxides, sulphur dioxide and particulates from the flue gas can also remove PCDD/F emissions. When using these techniques, PCDD/F removal efficiencies will vary from plant to plant. Research is ongoing to develop PCDD/F removal techniques, but until such techniques are available on an industrial scale, no best available technique is identified for the specific purpose of PCDD/F removal.

D. Residential combustion

43. The contribution of residential combustion appliances to total emissions of PCDD/F is less significant when approved fuels are properly used. In addition, large regional differences in emissions can occur due to the type and quality of fuel, geographical appliance density and usage.

44. Domestic fireplaces have a worse burn-out rate for hydrocarbons in fuels and waste gases than large combustion installations. This is especially true if they use solid fuels such as wood and coal, with PCDD/F emission concentrations in the range of 0.1 to 0.7 ng TE/m3.

45. Burning packing material added to solid fuels increases PCDD/F emissions. Even though it is prohibited in some countries, the burning of rubbish and packing material may occur in private households. Due to increasing disposal charges, it must be recognized that household waste materials are being burned in domestic firing installations. The use of wood with the addition of waste packing material can lead to an increase in PCDD/F emissions from 0.06 ng TE/m3 (exclusively wood) to 8 ng TE/m3 (relative to 11% O2 by volume). These results have been confirmed by investigations in several countries in which up to 114 ng TE/m3 (with respect to 13% oxygen by volume) was measured in waste gases from residential combustion appliances burning waste materials.

46. The emissions from residential combustion appliances can be reduced by restricting the input materials to good-quality fuel and avoiding the burning of waste, halogenated plastics and other materials. Public information programmes for the purchasers/operators of residential combustion appliances can be effective in achieving this goal.

E. Firing installations for wood (<50 MW capacity)

47. Measurement results for wood-firing installations indicate that PCDD/F emissions above 0.1 ng TE/m3 occur in waste gases especially during unfavourable burn-out conditions and/or when the substances burned have a higher content of chlorinated compounds than normal untreated wood. An indication of poor firing is the total carbon concentration in the waste gas. Correlations have been found between CO emissions, burn - out quality and PCDD/F emissions. Table 3 summarizes some emission concentrations and factors for wood-firing installations.

48. The combustion of urban waste wood (demolition wood) in moving grates leads to relatively high PCDD/F emissions, compared to non-waste wood sources. A primary measure for emission reduction is to avoid the use of treated waste wood in wood-firing installations. Combustion of treated wood should be undertaken only in installations with the appropriate flue-gas cleaning to minimize PCDD/F emissions.

         A. Coke production

49. During coke production, PAHs are released into the ambient air mainly:

     (a) When the oven is charged through the charging holes;

     (b) By leakages from the oven door, the ascension pipes and the charging hole lids; and

     (c) During coke pushing and coke cooling.

50. Benzo(a)pyrene (BaP) concentration varies substantially between the individual sources in a coke battery. The highest BaP concentrations are found on the top of the battery and in the immediate vicinity of the doors.

51. PAH from coke production can be reduced by technically improving existing integrated iron and steel plants. This might entail the closure and replacement of old coke batteries and the general reduction in coke production, for instance by injecting high-value coal in steel production.

52. A PAH reduction strategy for coke batteries should include the following technical measures:

     (a) Charging the coke ovens:

          - Particulate matter emission reduction when charging the coal from the bunker into the charging cars;

          - Closed systems for coal transfer when coal pre-heating is used;

          - Extraction of filling gases and subsequent treatment, either by passing the gases into the adjacent oven or by passing via a collecting main to an incinerator and a subsequent dedusting device. In some cases the extracted filling gases may be burned on the charging cars, but the environmental performance and safety of these charging-car-based systems is less satisfactory. Sufficient suction should be generated by steam or water injection in the ascension pipes;

     (b) Emissions at charging hole lids during coking operation should be avoided by:

          - Using charging hole lids with highly efficient sealing;

          - Luting the charging hole lids with clay (or equally effective material) after each charging operation;

          - Cleaning the charging hole lids and frames before closing the charging hole;

          - Keeping oven ceilings free from coal residuals;

     (c) Ascension pipe lids should be equipped with water seals to avoid gas and tar emissions, and the proper operation of the seals should be maintained by regular cleaning;

     (d) Coke oven machinery for operating the coke oven doors should be equipped with systems for cleaning the seals' surfaces on the oven door frames and oven doors;

     (e) Coke oven doors:

          - Highly effective seals should be used (e.g. spring-loaded membrane doors);

          - Seals on the oven doors and door frames should be cleaned thoroughly at every handling operation;

          - Doors should be designed in a manner that allows the installation of particulate matter extraction systems with connection to a dedusting device (via a collecting main) during pushing operations;

     (f) The coke transfer machine should be equipped with an integrated hood, stationary duct and stationary gas cleaning system (preferably a fabric filter);

     (g) Low-emission procedures should be applied for coke cooling, e.g. dry coke cooling. The replacement of a wet quenching process by dry coke cooling should be preferred, so long as the generation of waste water is avoided by using a closed circulation system. The dusts generated when dry quenched coke is handled should be reduced.

53. A coke-making process referred to as "non-recovery coke-making" emits significantly less PAH than the more conventional by-product recovery process. This is because the ovens operate under negative pressure, thereby eliminating leaks to the atmosphere from the coke oven doors. During coking, the raw coke oven gas is removed from the ovens by a natural draught, which maintains a negative pressure in the ovens. These ovens are not designed to recover the chemical by-products from raw coke oven gas. Instead, the offgases from the coking process (including PAH) are burned efficiently at high temperatures and with long residence times. The waste heat from this incineration is used to provide the energy for coking, and excess heat may be used to generate steam. The economics of this type of coking operation may require a cogeneration unit to produce electricity from the excess steam. Currently there is only one non-recovery coke plant operating in the United States, and one is in operation in Australia. The process is basically a horizontal sole-flue non-recovery coke oven with an incineration chamber adjoining two ovens. The process provides for alternate charging and coking schedules between the two ovens. Thus, one oven is always providing the incineration chamber with coke gases. The coke gas combustion in the incineration chamber provides the necessary heat source. The incineration chamber design provides the necessary dwell time (approximately 1 second) and high temperatures (minimum of 900°C).

54. An effective monitoring programme for leakages from coke oven door seals, ascension pipes and charging hole lids should be operated. This implies the monitoring and recording of leakages and immediate repair or maintenance. A significant reduction of diffuse emissions can thus be achieved.

55. Retrofitting existing coke batteries to facilitate condensation of flue gases from all sources (with heat recovery) results in a PAH reduction of 86% to more than 90% in air (without regard to waste water treatment). Investment costs can be amortized in five years, taking into account recovered energy, heated water, gas for synthesis and saved cooling water.

56. Increasing coke oven volumes results in a decrease in the total number of ovens, oven door openings (amount of pushed ovens per day), number of seals in a coke battery and consequently PAH emissions. Productivity increases in the same way by decreasing operating and personnel costs.

57. Dry coke cooling systems require a higher investment cost than wet methods. Higher operating costs can be compensated for by heat recovery in a process of pre-heating the coke. The energy efficiency of a combined dry coke cooling/coal pre-heating system rises from 38 to 65%. Coal pre-heating boosts productivity by 30%. This can be raised to 40% because the coking process is more homogeneous.

58. All tanks and installations for the storage and treatment of coal tar and coal tar products must be equipped with an efficient vapour recovery return and/or vapour destruction system. The operating costs of vapour destruction systems can be reduced in an autothermal after-burning mode if the concentration of the carbon compounds in the waste is high enough.

59. Table 4 summarizes PAH emission reduction measures in coke production plants.

a/ Remaining emission compared to unreduced mode.

B. Anode production

60. PAH emissions from anode production have to be dealt with in a similar fashion as those from coke production.

61. The following secondary measures for emission reduction of PAH-contaminated dust are used:

         (a) Electrostatic tar precipitation;

         (b) Combination of a conventional electrostatic tar filter with a wet electrostatic filter as a more efficient technical measure;

         (c) Thermal after-burning of the waste gases; and

         (d) Dry scrubbing with limestone/petroleum coke or aluminum oxide (Al2O3).

62. The operating costs in thermal after-burning can be reduced in an autothermal after-burning mode if the concentration of carbon compounds in the waste gas is high enough. Table 5 summarizes PAH emission control measures for anode production.

a/ Remaining emission compared to unreduced mode.

C. Aluminium industry

63. Aluminium is produced from aluminium oxide (Al2O3) by electrolysis in pots (cells) electrically connected in series. Pots are classified as prebake or Soederberg pots, according to the type of the anode.

64. Prebake pots have anodes consisting of calcined (baked) carbon blocks, which are replaced after partial consumption. Soederberg anodes are baked in the cell, with a mixture of petroleum coke and coal tar pitch acting as a binder.

65. Very high PAH emissions are released from the Soederberg process. Primary abatement measures include modernization of existing plants and optimization of the processes, which could reduce PAH emissions by 70-90%. An emission level of 0.015 kg B(a)P/tonne of Al could be reached. Replacing the existing Soederberg cells by prebaked ones would require major reconstruction of the existing process, but would nearly eliminate the PAH emissions. The capital costs of such replacements are very high.

66. Table 6 summarizes PAH emission control measures for aluminium production.

a/ Remaining emission compared to unreduced mode.

D. Residential combustion

67. PAH emissions from residential combustion can be detected from stoves or open fireplaces especially when wood or coal is used. Households could be a significant source of PAH emissions. This is the result of the use of fireplaces and small firing installations burning solid fuels in households. In some countries the usual fuel for stoves is coal. Coal-burning stoves emit less PAH than wood-burning ones, because of their higher combustion temperatures and more consistent fuel quality.

68. Furthermore, combustion systems with optimized operation characteristics (e.g. burning rate) effectively control PAH emissions from residential combustion. Optimized combustion conditions include optimized combustion chamber design and optimized supply of air. There are several techniques which optimize combustion conditions and reduce emissions. There is a significant difference in emissions between different techniques. A modern wood-fired boiler with a water accumulation tank, representing BAT, reduces the emission by more than 90% compared to an outdated boiler without a water accumulation tank. A modern boiler has three different zones: a fireplace for the gasification of wood, a gas combustion zone with ceramics or other material which allow temperatures of some 1000°C, and a convection zone. The convection part where the water absorbs the heat should be sufficiently long and effective so that the gas temperature can be reduced from 1000°C to 250°C or less. There are also several techniques to supplement old and outdated boilers, for example with water accumulation tanks, ceramic inserts and pellet burners.

69. Optimized burning rates are accompanied by low emissions of carbon monoxide (CO), total hydrocarbons (THC) and PAHs. Setting limits (type approval regulations) on the emission of CO and THCs also affects the emission of PAHs. Low emission of CO and THCs results in low emission of PAHs. Since measuring PAH is far more expensive than measuring CO, it is more cost-effective to set a limit value for CO and THCs. Work is continuing on a proposal for a CEN standard for coal- and wood-fired boilers up to 300 kW (see table 7).

Note: Emission levels in mg/m3 at 10% O2.

70. Emissions from residential wood combustion stoves can be reduced:

 (a) For existing stoves, by public information and awareness programmes regarding proper stove operation, the use of untreated wood only, fuel preparation procedures and the correct seasoning of wood for moisture content; and

 (b) For new stoves, by the application of product standards as described in the draft CEN standard (and equivalent product standards in the United States and Canada).

71. More general measures for PAH emission reduction are those related to the development of centralized systems for households and energy conservation such as improved thermal insulation to reduce energy consumption.

72. Information is summarized in table 8.

a/ Remaining emission compared to unreduced mode.

E. Wood preservation installations

73. Wood preservation with PAH-containing coal-tar products may be a major source of PAH emissions to the air. Emissions may occur during the impregnation process itself as well as during storage, handling and use of the impregnated wood in the open air.

74. The most widely used PAH-containing coal-tar products are carbolineum and creosote. Both are coal tar distillates containing PAHs for the protection of timber (wood) against biological attack.

75. PAH emissions from wood preservation, installations and storage facilities may be reduced using several approaches, implemented either separately or in combination, such as:

         (a) Requirements on storage conditions to prevent pollution of soil and surface water by leached PAH and contaminated rainwater (e.g. storage sites impermeable to rainwater, roof cover, reuse of contaminated water for the impregnation process, quality demands for the material produced);

         (b) Measures to reduce atmospheric emissions at impregnation plants (e.g. the hot wood should be cooled down from 90°C to 30°C at least before transport to storage sites. However, an alternative method using pressure steam under vacuum conditions to impregnate the wood with creosote should be highlighted as BAT);

         (c) The optimum loading of wood preservative, which gives adequate protection to the treated wood product in situ, can be regarded as a BAT as this will reduce the demand for replacements, thereby reducing emissions from the wood preservation installations;

         (d) Using wood preservation products with a lower content of those PAHs that are POPs:

         (e) Evaluating and then using, as appropriate, alternatives, such as those in table 9, that minimize reliance on PAH-based products.

76. Burning of impregnated wood gives rise to PAH emissions and other harmful substances. If burning does take place, it should be done in installations with adequate abatement techniques.

TIMESCALES FOR THE APPLICATION OF LIMIT VALUES AND BEST AVAILABLE TECHNIQUES TO NEW AND EXISTING STATIONARY SOURCES

The timescales for the application of limit values and best available techniques are:

         (a) For new stationary sources: two years after the date of entry into force of the present Protocol;

         (b) For existing stationary sources: eight years after the date of entry into force of the present Protocol. If necessary, this period may be extended for specific existing stationary sources in accordance with the amortization period provided for by national legislation.

ANNEX VII

RECOMMENDED CONTROL MEASURES FOR REDUCING EMISSIONS OF PERSISTENT ORGANIC POLLUTANTS FROM MOBILE SOURCES

1. Relevant definitions are provided in annex III to the present Protocol.

    A. Achievable emission levels for new vehicles

2. Diesel-fuelled passenger cars

3. Heavy-duty vehicles