814.318.142.1
English is not an official language of the Swiss Confederation. This translation is provided for information purposes only and has no legal force.
(OAPC)
of 16 December 1985 (Last amended on 1 January 2026)
The provisions concerning the preventive limiting of emissions from new stationary installations (Articles 3, 4 and 6) also apply to existing stationary installations.
In accordance with legislation on road transport, aviation, shipping and railways, preventive measures shall be taken to control emissions from vehicles as far as is technically and operationally feasible and economically acceptable.
In the case of transport infrastructure, the authorities shall order such measures as are technically and operationally feasible and economically acceptable in order to control traffic-related emissions.
If vehicles or transport infrastructure have been shown or are expected to cause excessive ambient air pollution levels, the procedure specified in Articles 31–34 shall be followed.
Thermal fuels are subject to the requirements specified in Annex 5.
Any person who imports thermal fuels or offers them for sale on a commercial basis must declare the quality of the thermal fuel to the customer or consumer. On import, he must also declare the quality to the customs authorities.
Motor fuels are subject to the requirements specified in Annex 5.
Any person who imports motor fuels or offers them for sale on a commercial basis must declare the quality of the motor fuel to the customer or consumer. On import, he must also declare the quality to the customs authorities.
Waste may only be incinerated or thermally decomposed in installations specified in Annex 2 Number 7; an exception to this is the incineration of waste specified in Annex 2 Number 11.
The owner of an installation which is a significant source of emissions may be requested by the authorities to monitor ambient air pollution levels by carrying out measurements in the area concerned.
The authorities shall assess whether the ambient air pollution levels measured are excessive (Article 2 paragraph 5).
The authorities shall draw up an action plan in accordance with Article 44a of the Act if it has been established or is to be expected that, in spite of the preventive limiting of emissions, excessive ambient air pollution levels are caused by:
Subject to the provisions of Article 36, the cantons shall be responsible for enforcement of this Ordinance.
The FOEN shall specify the minimal geodata models and presentation models for official geodata in accordance with this Ordinance for which it is designated as the competent federal authority in Annex 1 of the Ordinance of 21 May 2008on Geoinformation.
The Ordinance of 10 December 1984on Air Pollution Control Measures for Combustion Installations is repealed.
This Ordinance comes into force on 1 March 1986.
Annex 1(Art. 3 para. 1)
1The provisions of this Annex apply to the preventive limiting of emissions from stationary installations.2They are without prejudice to the additional or different provisions applicable for:
Flue gases means waste air, flue gases and other air pollutants discharged by installations.
Emissions are expressed in the following terms:
1The limit values expressed as concentrations and the oxygen contents given as reference values are based on the volume of flue gas under standard conditions (0 °C, 1013 mbar) after deduction of the moisture content (dry).2The limit values expressed as emission concentrations are based on the amount of flue gas which is no more heavily diluted than is technically and operationally unavoidable.3If oxygen content by volume is given as the reference value for an installation listed in Annexes 2–4, the measured emission concentrations are to be corrected to this reference value.
The rated thermal input is the maximum thermal energy that can be supplied to an installation per unit time. It is obtained by multiplying the fuel consumption of the installation by the lower calorific value of the fuel.
1The following emission limitation requirements apply:
1If there is more than one emission source and if emission limitation requirements depend on the size of an installation (e.g. capacity or mass flow), the authorities shall determine which emission sources shall collectively be considered to constitute a single installation.2Emission sources are generally to be considered as a single installation if they are situated in close proximity to each other and if their emissions:
If the mass flow of dust is 0.20 kg/h or more, total dust emissions must not exceed 20 mg/m3.
The requirements specified in Numbers 5, 7 and 8 apply to the limitation of emissions of individual components of dust.
1If significant dust emissions may occur in commercial or industrial facilities as a result of processes such as the conveyance, crushing, sorting or filling of dust-forming materials, the dust-containing flue gases must be captured and fed into a dust removal system.2When dust-forming materials are stored or trans-shipped in the open, measures must be taken to prevent significant dust emissions.3When dust-forming materials are transported, transport equipment must be used which prevents significant dust emissions.4If traffic on factory roads may cause significant dust emissions, the roads must be kept free of dust.
1The emission concentration of the substances listed in Number 52 must not exceed the following values: a. Class 1 substances at a mass flow of 1 g/h or more 0.2 mg/m3 b. Class 2 substances at a mass flow of 5 g/h or more 1 mg/m3 c. Class 3 substances at a mass flow of 25 g/h or more 5 mg/m32The limit values apply to the total mass of an emitted substance, including gaseous and vaporous components in the flue gas.3If the flue gas contains several substances belonging to the same class, the limit value applies to the sum of these substances.
| Substance | Expressed as | Class | |
|---|---|---|---|
| Antimony1 | and its compounds | Sb | 3 |
| Arsenic1 | and its compounds, except arsine | As | 2 |
| Chromium1 | and its compounds | Cr | 3 |
| Cobalt1 | and its compounds | Co | 2 |
| Copper | and its compounds | Cu | 3 |
| Cyanides2 | CN | 3 | |
| Fluorides2 | in dust form | F | 3 |
| Lead | and its compounds | Pb | 3 |
| Manganese | and its compounds | Mn | 3 |
| Mercury | and its compounds | Hg | 1 |
| Nickel1 | and its compounds | Ni | 2 |
| Palladium | and its compounds | Pd | 3 |
| Platinum | and its compounds | Pt | 3 |
| Rhodium | and its compounds | Rh | 3 |
| Silica dust | in fine crystalline form | SiO | 3 |
| Selenium | and its compounds | Se | 2 |
| Tellurium | and its compounds | Te | 2 |
| Thallium | and its compounds | Tl | 1 |
| Tin | and its compounds | Sn | 3 |
| Vanadium | and its compounds | V | 3 |
| 1 If not listed as a carcinogenic compound under Number 8. | |||
| 2 If readily soluble. |
The emission concentration of any of the substances listed in Number 62 must not exceed the following values: a. For a Class 1 substance at a mass flow of 10 g/h or more 1 mg/m3 b. For a Class 2 substance at a mass flow of 50 g/h or more 5 mg/m3 c. For a Class 3 substance at a mass flow of 300 g/h or more 30 mg/m3 d. For a Class 4 substance at a mass flow of 2500 g/h or more 250 mg/m3
| Substance | Class |
|---|---|
| Ammonia and ammonium compounds, expressed as ammonia | 3 |
| Arsine | 1 |
| Bromine and its gaseous or vaporous compounds, expressed as hydrogen bromide | 2 |
| Chlorine | 2 |
| Chlorine compounds, vaporous or gaseous inorganic chlorine compounds except cyanogen chloride and phosgene, expressed as hydrogen chloride | 3 |
| Cyanogen chloride | 1 |
| Fluorine and its vaporous or gaseous compounds, expressed as hydrogen fluoride | 2 |
| Hydrogen cyanide | 2 |
| Hydrogen phosphide | 1 |
| Hydrogen sulphide | 2 |
| Nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide | 4 |
| Phosgene | 1 |
| Sulphur oxides (sulphur dioxide and sulphur trioxide), expressed as sulphur dioxide | 4 |
1The emission concentration of the substances listed in Number 72 must not exceed the following values: a. Class 1 substances at a mass flow of 0.1 kg/h or more 20 mg/m3 b. Class 2 substances at a mass flow of 2.0 kg/h or more 100 mg/m3 c. Class 3 substances at a mass flow of 3.0 kg/h or more 150 mg/m32Notwithstanding paragraph 1, the provisions on dust limitation specified in Number 41 apply to Class 2 and Class 3 organic substances in particulate form.3If the flue gas contains several substances belonging to the same class, the limit value applies to the sum of these substances.4If the flue gas contains substances of different classes, the sum of the substances at a total mass flow of 3.0 kg/h or more must not exceed the limit value of 150 mg/m3, in addition to the requirements specified in paragraphs 1 and 2.5Emissions of substances for which there is good cause to believe that they are carcinogenicand which are not listed as Class 1 substances in the Table under Number 72 must be controlled in accordance with paragraph 1 letter a.6Emissions of substances which are classified as ozone depleting substances in Annex 1.4 of the Ordinance of 18 May 2005on Chemical Risk Reduction, but which are not listed as Class 1 substances in the Table under Number 72, must be controlled in accordance with paragraph 1 letter a. This is without prejudice to the provisions of Number 8.
| Substance | Molecular formula | Class |
|---|---|---|
| Acetaldehyde | C | 1 |
| Acetic acid | C | 2 |
| Acetic acid butyl ester (see Butyl acetate) | ||
| Acetic acid ethyl ester (see Ethyl acetate) | ||
| Acetic acid methyl ester (see Methyl acetate) | ||
| Acetic acid vinyl ester (see Vinyl acetate) | ||
| Acetic ester (see Ethyl acetate) | ||
| Acetone | C | 3 |
| Acrolein (see 2-Propenal) | ||
| Acrylic acid | C | 1 |
| Acrylic acid ethyl ester (see Ethyl acrylate) | ||
| Acrylic acid methyl ester (see Methyl acrylate) | ||
| Alkanes, except methane | 3 | |
| Alkenes, except 1,3-butadiene and ethene | 3 | |
| Alkyl alcohols | 3 | |
| Alkyl lead compounds | 1 | |
| Aniline | C | 1 |
| Benzoic acid methyl ester (see Methyl benzoate) | ||
| Biphenyl | C | 1 |
| Bis(2-ethylhexyl)phthalate (see Di(2-ethylhexyl)phthalate) | ||
| Bromomethane | CH | 1 |
| 2-Butanone | C | 3 |
| 2-Butoxyethanol | C | 2 |
| Butyl acetate | C | 3 |
| Butyl glycol (see 2-Butoxyethanol) | ||
| Butyraldehyde | C | 2 |
| Carbon disulphide | CS | 2 |
| Carbon tetrachloride (see Tetrachloromethane) | ||
| CFCs, chlorofluorocarbons, fully halogenated, with up to 3 C atoms | 1 | |
| Chloroacetaldehyde | C | 1 |
| Chlorobenzene | C | 2 |
| Chloroacetic acid | C | 1 |
| Chloroethane | C | 1 |
| Chloromethane | CH | 1 |
| Chloroform (see Trichloromethane) | ||
| 2-Chloroprene (see 2-Chloro-1,3-butadiene) | ||
| 2-Chloropropane | C | 2 |
| Cresols | C | 1 |
| Cumene (see Isopropylbenzene) | ||
| Cyclohexanone | C | 1 |
| Diacetone alcohol (see 4-Hydroxy-4-methyl-2-pentanone) | ||
| Dibutyl ether | C | 3 |
| 1,2-Dichlorobenzene | C | 1 |
| 1,1-Dichloroethane | C | 2 |
| 1,1-Dichloroethene | C | 1 |
| 1,2-Dichloroethene | C | 3 |
| Dichloromethane | CH | 1 |
| Dichlorophenols | C | 1 |
| Diethanolamine (see 2,2'-Iminodiethanol) | ||
| Diethylamine | C | 1 |
| Diethyl ether | C | 3 |
| Di(2-ethylhexyl)phthalate | C | 2 |
| Diisopropyl ether | C | 3 |
| Diisobutyl ketone (see 2,6-Dimethyl-4-heptanone) | ||
| Dimethylamine | C | 1 |
| Dimethyl ether | C | 3 |
| N,N-Dimethylformamide | C | 2 |
| 2,6-Dimethyl-4-heptanone | C | 2 |
| Dioctyl phthalate (see Di(2-ethylhexyl)phthalate) | ||
| 1,4-Dioxane | C | 1 |
| Diphenyl (see Biphenyl) | ||
| Ethanol (see Alkyl alcohols) | ||
| Ethene | C | 1 |
| Ether (see Diethyl ether) | ||
| 2-Ethoxyethanol | C | 2 |
| Ethyl acetate | C | 3 |
| Ethyl acrylate | C | 1 |
| Ethylamine | C | 1 |
| Ethylbenzene | C | 2 |
| Ethyl chloride (see Chloroethane) | ||
| Ethylene glycol | C | 3 |
| Ethylene glycol monobutyl ether (see 2-Butoxyethanol) | ||
| Ethylene glycol monoethyl ether (see 2-Ethoxyethanol) | ||
| Ethylene glycol monomethyl ether (see 2-Methoxyethanol) | ||
| Ethyl glycol (see 2-Ethoxyethanol) | ||
| Ethyl methyl ketone (see 2-Butanone) | ||
| Formaldehyde | CH | 1 |
| Formic acid | CH | 1 |
| Formic acid dimethyl amide (see N,N-Dimethylformamide) | ||
| Formic acid methyl ester (see Methyl formate) | ||
| 2-Furaldehyde | C | 1 |
| Furfural (see 2-Furaldehyde) | ||
| Furfuryl alcohol | C | 2 |
| Glycol (see Ethylene glycol) | ||
| Halons, bromofluorocarbons, fully halogenated, with up to 3 C atoms | 1 | |
| HBFCs, hydrobromofluorocarbons, partially halogenated, with up to 3 C atoms | 1 | |
| HCFCs, hydrochlorofluorocarbons, partially halogenated, with up to 3 C atoms | 1 | |
| 4-Hydroxy-4-methyl-2-pentanone | C | 3 |
| 2,2'-Iminodiethanol | C | 2 |
| Isopropenylbenzene | C | 2 |
| Isopropylbenzene | C | 2 |
| Maleic anhydride | C | 1 |
| Mercaptans (see Thiols) | ||
| Methacrylic acid methyl ester (see Methyl methacrylate) | ||
| Methanol (see Alkyl alcohols) | ||
| 2-Methoxyethanol | C | 2 |
| Methyl acetate | C | 2 |
| Methyl acrylate | C | 1 |
| Methylamine | CH | 1 |
| Methyl benzoate | C | 3 |
| Methyl chloride (see Chloromethane) | ||
| Methyl chloroform (see 1,1,1,-Trichloroethane) | ||
| Methylcyclohexanone | C | 2 |
| Methylene chloride (see Dichloromethane) | ||
| Methyl ethyl ketone (see 2-Butanone) | ||
| Methyl formate | C | 2 |
| Methyl glycol (see 2-Methoxyethanol) | ||
| Methyl isobutyl ketone (see 4-Methyl-2-pentanone) | ||
| Methyl methacrylate | C | 2 |
| 4-Methyl-2-pentanone | C | 3 |
| 4-Methyl-m-phenylene diisocyanate | C | 1 |
| N-Methyl pyrrolidone | C | 3 |
| Naphthalene | C | 1 |
| Nitrobenzene | C | 1 |
| Nitrocresols | C | 1 |
| Nitrophenols | C | 1 |
| Nitrotoluenes*,* except 2-nitrotoluene | C | 1 |
| Olefin hydrocarbons (see Alkenes) | 3 | |
| Paraffin hydrocarbons (see Alkanes) | 3 | |
| Perchloroethylene (see Tetrachloroethylene) | ||
| Phenol | C | 1 |
| Phthalic acid dioctyl ester (see Di(2-ethylhexyl)phthalate) | ||
| Pinenes | C | 3 |
| 2-Propenal | C | 1 |
| Propionaldehyde | C | 2 |
| Propionic acid | C | 2 |
| Pyridine | C | 1 |
| Styrene | C | 2 |
| 1,1,2,2-Tetrachloroethane | C | 1 |
| Tetrachloroethylene | C | 1 |
| Tetrachloromethane | CCl | 1 |
| Tetrahydrofuran | C | 2 |
| Thiols | 1 | |
| Thioether | 1 | |
| Toluene | C | 2 |
| Toluene diisocyanate (see 4-Methyl-m-phenylene diisocyanate) | ||
| Tolylene-2,4-diisocyanate (see 4-Methyl-m-phenylene diisocyanate) | ||
| 1,1,1-Trichloroethane | C | 1 |
| 1,1,2-Trichloroethane | C | 1 |
| Trichloromethane | CHCl | 1 |
| Trichlorophenols | C | 1 |
| Triethylamine | C | 1 |
| Trimethylbenzenes | C | 2 |
| Vinyl acetate | C | 1 |
| Wood dust, respirable (except beech and oak wood dust) | 1 | |
| Xylenols, except 2,4-xylenol | C | 1 |
| 2,4-Xylenol | C | 2 |
| Xylenes | C | 2 |
Carcinogens means those substances that are designated as carcinogenic (C) in the list of limit values for exposure at the workplacepublished by the Swiss Accident Insurance Fund (SUVA).
1Irrespective of the risk of carcinogen exposure, emissions of carcinogens shall be limited as far as is technically and operationally feasible and economically acceptable.2Emissions of the carcinogens listed in Number 83 shall be limited at least to such an extent that emission concentrations do not exceed the following values: a. Class 1 substances at a mass flow of 0.5 g/h or more 0.1 mg/m3 b. Class 2 substances at a mass flow of 5 g/h or more 1 mg/m3 c. Class 3 substances at a mass flow of 25 g/h or more 5 mg/m33If the flue gas contains several substances belonging to the same class, the limitation requirements specified in paragraph 2 apply to the sum of these substances.
| Substance | Molecular formula | Class |
|---|---|---|
| Acrylonitrile | C | 3 |
| Antimony trioxide (in respirable form), expressed as Sb | Sb | 2 |
| Arsenic trioxide and arsenic pentoxide, arsenious acid and its salts, arsenic acid and its salts (in respirable form), expressed as As | As | 2 |
| Asbestos (chrysotile, crocidolite, amosite, anthophyllite, actinolite, tremolite) in the form of fine dust | 1 | |
| Beech wood dust, respirable | 3 | |
| Benzene | C | 3 |
| Benzo[a]pyrene | C | 1 |
| Beryllium and its compounds in respirable form, expressed as Be | Be | 1 |
| Bromomethane | C | 3 |
| 1,3-Butadiene | C | 3 |
| Cadmium and its compounds cadmium chloride, cadmium oxide, cadmium sulphate, cadmium sulphide, and other bioavailable compounds (in respirable form), expressed as Cd | Cd | 1 |
| 2-Chloro-1,3-butadiene | C | 3 |
| 1-Chloro-2,3-epoxypropane | C | 3 |
| α-Chlorotoluene | C | 3 |
| α-Chlorotoluenes; mixtures of -chlorotoluene, α, α‑dichlorotoluene, α, α, α-trichlorotoluene and benzyl chloride | 3 | |
| Chromium(VI) compounds (in respirable form) as calcium chromate, chromium(III) chromate, strontium chromate and zinc chromate, expressed as Cr | Cr | 2 |
| Cobalt (in the form of respirable dusts or aerosols of cobalt metal and poorly soluble cobalt salts), expressed as Co | Co | 2 |
| Dibenzo(a,h)anthracene | C | 1 |
| 1,2-Dibromoethane | C | 3 |
| 1,4-Dichlorobenzene | C | 3 |
| 3,3’-Dichlorobenzidine | C | 2 |
| 1,2-Dichloroethane | C | 3 |
| Diesel soot | 3 | |
| Diethyl sulphate | C | 2 |
| Dimethyl sulphate | C | 2 |
| Epichlorohydrin (see 1-Chloro-2,3-epoxypropane) | ||
| 1,2-Epoxypropane | C | 3 |
| Ethylene imine | C | 2 |
| Ethylene oxide | C | 3 |
| Hydrazine | H | 3 |
| 2-Naphthylamine | C | 1 |
| Nickel (in the form of respirable dusts or aerosols of nickel metal, nickel sulphide and sulphide ores, nickel oxide and nickel carbonate, nickel tetracarbonyl), expressed as Ni | Ni | 2 |
| 2-Nitrotoluene | C | 3 |
| Oak wood dust, respirable | 3 | |
| o-Toluidine | C | 3 |
| Trichlorethylene | C | 3 |
| Vinyl chloride | C | 3 |
| N-Vinyl-2-pyrrolidone | C | 3 |
1 Non-metallic mineral products 11 Cement and lime kilns 12 Installations for firing ceramic products using clay 13 Installations for the production of glass 14 Asphalt mixing plants 2 Chemistry 21 Installations for the production of sulphuric acid 22 Installations using the Claus process 23 Installations for the production of chlorine 24 Installations for the production of 1,2-dichloroethane and vinyl chloride 25 … 26 Production and packaging of plant protection products 27 Installations for the production of carbon black 28 Installations for the production of carbon (hard-burnt coal) or electrographite by means of incineration 29 Installations for the production of nitric acid 3 Mineral oil industry 31 Refineries 32 Large storage tank installations 33 Installations for transshipment of petrol 4 Metals 41 Foundries 42 Cupolas 43 Aluminium smelters 44 Installations for refining non-ferrous metals 45 Galvanising installations 46 Installations for the production of lead-acid batteries 47 Heating furnaces and heat treatment furnaces 48 Electric steel plants 5 Agriculture and foodstuffs 51 Stock rearing 52 Smoking installations 53 Installations for rendering and for dung drying 54 Installations for drying green fodder 55 Installations for the storage and spreading of liquid farm manure 56 Installations for roasting coffee and cocoa 6 Coating and printing 61 Installations for coating and printing with organic substances 7 Waste 71 Installations for incineration of municipal and special waste 72 Installations for incineration of waste wood, paper and similar waste 73 Installations for incineration of sulphite waste liquor from pulp manufacture 74 Installations for incineration of biogenic waste and products of agriculture 8 Other installations 81 Installations in which products are treated by direct contact with furnace flue gases 82 Stationary internal combustion engines 83 Gas turbines 84 Installations for the production of wood particle board and wood fibre board 85 Dry cleaning (clothes) 86 Crematoria 87 Surface treatment installations 88 Construction sites
1Number 81 does not apply to cement kilns.2Waste may only be used in cement kilns if it is suitable for this purpose in accordance with Article 24 of the Waste Ordinance of 4 December 2015(ADWO).
Emission limit values are based on a flue gas oxygen content of 10 % (% vol).
1Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide must not exceed 200 mg/m3.2Emissions of ammonia must not exceed 30 mg/m3.
Emissions of sulphur oxides, expressed as sulphur dioxide, shall be limited as far as is technically and operationally feasible and economically acceptable, but at least to 400 mg/m3.
1The emission limits in Annex 1 Number 7 do not apply.2Emissions of gaseous organic substances are expressed as total carbon.3The authority shall specify an installation-specific limit value for the total carbon taking the composition of the natural raw materials into account, subject to the following requirements:
Dust emissions must not exceed 10 mg/m3.
Emissions of mercury and cadmium and compounds, expressed as metals, must not exceed 0.05 mg/m3in either case.
Emissions of lead and zinc and compounds, expressed as metals, must not exceed 1 mg/m3in total.
Emissions of polychlorinated dibenzo-p-dioxins (dioxins) and dibenzofurans (furans) expressed as the sum of the toxicity equivalents in accordance with EN 1948‑1must not exceed 0.1 ng/m3.
1The flue gas content of the following must be continuously measured and recorded:
Emission limit values are based on a flue gas oxygen content of 18 % (v/v).
1The emission limitation requirements specified for fluorine compounds in Annex 1 Numbers 5 and 6 do not apply.2Emissions of fluorine compounds, expressed as hydrogen fluoride, must not exceed 250 g/h.
Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, shall be limited as far as is technically and operationally feasible and economically acceptable but, at a mass flow of 2000 g/h or more, at least to 150 mg/m3.
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of gaseous and vaporous organic substances shall be expressed as total carbon and must not exceed 100 mg/m3.
The provisions of Number 81 apply.
The provisions of this Number apply to installations that produce more than 2 tonnes of glass per year.
Emission limit values are based on the following flue gas oxygen contents:
1The emission limitation requirement specified for nitrogen oxides in Annex 1 Number 6 does not apply.2Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, shall be limited as far as is technically and operationally feasible and economically acceptable, but at least so that they do not exceed the following limit values:
Emissions of sulphur oxides from the raw material, expressed as sulphur dioxide, must not exceed 500 mg/m3.
The provisions of Number 81 apply.
The emission limit values are based on a flue gas oxygen content of 17 per cent (% vol).
1The flue gases from the mixer shall be captured and fed into a flue gas purification system.2The gas displacement procedure must be used to fill the bitumen storage tank.
Dust emissions must not exceed 20 mg/m3.
1The emission limits specified in Annex 1 Number 7 do not apply.2Emissions of gaseous organic substances are expressed as total carbon and must not exceed 80 mg/m3.
Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, must not exceed 100 mg/m3.
Emissions of carbon monoxide must not exceed 500 mg/m3.
1The periodical measurement and inspection in accordance with Article 13 paragraph 3 must be repeated annually.2The temperatures in the mineral and asphalt granulate drums must be continuously measured and recorded.
The provisions of this Number apply to installations for the production of sulphur dioxide, sulphur trioxide, sulphuric acid and oleum.
1The emission limitation requirement specified for sulphur dioxide in Annex 1 Number 6 does not apply.2Emissions of sulphur dioxide must not exceed 2.6 kg per tonne of 100 % sulphuric acid.
Emissions of sulphur trioxide must not exceed 60 mg/m3under constant gas conditions, and 120 mg/m3in all other cases.
The sulphur emission ratio must not exceed the following limit values:| For installations with a production capacity of | Limit value in % (m/m) | | --- | --- | | less than 20 t/day | 3.0 | | 20–50 t/day | 2.0 | | more than 50 t/day | 0.5 |
1The flue gases shall be subjected to afterburning.2Emissions of hydrogen sulphide must not exceed 10 mg/m3.
1Emissions of chlorine must not exceed 3 mg/m3.2In the case of installations for the production of chlorine with complete liquefaction, emissions of chlorine must not exceed 6 mg/m3.
With alkali metal chloride electrolysis by the amalgam process, mercury emissions must not exceed an annual average of 1.5 g per tonne of installed chlorine capacity.
1The flue gas shall be subjected to flue gas purification.2The emission limitation requirement specified for 1,2-dichloroethane and vinyl chloride in Annex 1 apply irrespective of the mass flows specified therein.
1Any person who produces or packages plant protection products must inform the cantonal environmental protection agency.2The authorities shall specify preventive emission limitation requirements for total dust in accordance with Article 4; Annex 1 Number 41 does not apply.
Particulate emissions must not exceed a total of 20 mg/m3.
1Emissions of organic substances, expressed as total carbon, must not exceed the emission limitation requirements specified in Numbers 282–284.2The emission limitation requirements specified in Annex 1 Number 7 do not apply.
Emissions of organic substances in the flue gas of mixing and moulding installations where pitch, tar or other volatile binding agents or plasticisers are processed at a high temperature must not exceed 100 mg/m3.
1Emissions of organic substances in the flue gas of single chamber furnaces, multi-chamber furnaces and tunnel furnaces must not exceed 50 mg/m3.2Emissions of gaseous organic substances in the flue gas of ring furnaces for graphite electrodes, carbon electrodes and carbon bricks must not exceed 200 mg/m3.
Emissions of organic substances in the flue gas of impregnation installations which use tar-based impregnation agents must not exceed 50 mg/m3.
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, shall be limited as far as is technically and operationally feasible and economically acceptable, but at least to 190 mg/m3.
The provisions of this Number apply to installations for the distillation or refining of mineral oil and mineral oil products and to other installations for the production of hydrocarbons.
1The emission limit values are based on a flue gas oxygen content of 3 % v/v.2The emission limitation requirements for refinery furnaces are determined by the total rated thermal input of the refinery.
Emissions of sulphur oxides, expressed as sulphur dioxide, must not exceed the following emission concentrations:
Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, must not exceed 300 mg/m3.
1Floating-roof tanks, fixed-roof tanks with internal floating cover, fixed-roof tanks connected to the refinery gas line or equivalent measures shall be provided for the storage of crude oils and refining products which have a vapour pressure of more than 13 mbar at a temperature of 20 °C. Floating-roof tanks shall be equipped with effective seals.2Fixed-roof tanks shall be equipped with forced ventilation, and the gases arising shall be fed to a gas collection or afterburning system if:
1Any organic gases or vapours released shall be collected using a gas collection system. They shall be reused, fed to a gas purification or afterburning system, or burnt off. This provision applies in particular to:
1Gases from desulphurisation installations and other sources shall be further processed if they simultaneously meet the following conditions:
1Process water or excess ballast water must be degassed before it is discharged into an open system.2The flue gases produced shall be purified by scrubbing or combustion.
The provisions of this Number apply to large storage tank installations with a capacity of more than 500 m3per tank which are intended for the storage of products with a vapour pressure of more than 1 mbar at a temperature of 20 °C.
Fixed-roof tanks with internal floating cover, floating-roof tanks equipped with effective seals or other equivalent measures to reduce emissions shall be provided for storage.
1The filling of road tankers, tank wagons or similar transport containers with automotive or aviation petrol must be carried out using bottom loading or other equivalent measures to reduce emissions.2The emission limitation requirements specified in Annex 1 Numbers 7 and 8 do not apply to petrol stations.3Petrol stations shall be equipped and operated in such a way that:
Emissions of amines arising during core making must not exceed 5 mg/m3.
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
Total dust emissions must not exceed 20 mg/m3.
Emissions of carbon monoxide in flue gas must not exceed 1000 mg/m3for hot‑blast furnaces with a recuperative heat exchanger.
The provisions of Number 81 apply.
1The emission limitation requirements specified for fluorine compounds in Annex 1 Numbers 5 and 6 do not apply.2Emissions of fluorine compounds, expressed as hydrogen fluoride, must not exceed a total of 700 g per tonne of aluminium produced.3Emissions of gaseous fluorine compounds, expressed as hydrogen fluoride, must not exceed 250 g per tonne of aluminium produced.
For comparison with the emission limit values, the measured emissions shall be averaged over an operating period of one month.
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of organic substances, expressed as total carbon, must not exceed 50 mg/m3.
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
Total dust emissions must not exceed 10 mg/m3.
1The emission limit values are based on an exhaust air volume of 3000 m3per square metre of zinc bath surface area per hour.2At least 80 % of emissions from the zinc bath shall be captured by enclosures, hoods, lip extraction systems or similar measures.3Emissions are only to be measured during dipping. Each dipping period begins with the first and ends with the last contact of the material to be galvanised with the galvanising bath.
1The flue gases from the installations shall be captured and fed into a dust removal system.2Emissions of lead must not exceed 1 mg/m3.
1Sulphuric acid vapours generated during plate formation shall be captured and fed into a flue gas purification system.2Emissions of sulphuric acid, expressed as H2SO4, must not exceed 1 mg/m3.
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
The provisions of this Number apply to heating furnaces and heat treatment furnaces with a rated thermal input of more than 100 kW which are fired with gaseous fuels as specified in Annex 5 Number 4 letters a–c.
The emission limit values are based on a flue gas oxygen content of 5 % (v/v).
Emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed the limit values specified in the following diagram. Diagram:
Emissions shall be measured at not less than 80 % of the rated load and at the highest operating temperature in each case.
The provisions of Number 81 apply.
The provisions of this number apply to installations for electric steel production, including continuous casting with a melting capacity of more than 2.5 tonnes of steel per hour.
Dust emissions must not exceed a total of 5 mg/m3.
The emissions of polychlorinated dibenzo-p-dioxins (dioxins) and dibenzofurans (furans) produced in electric arc furnaces expressed as the sum of the toxicity equivalents in accordance with EN 1948‑1, must not exceed 0.1 ng/m3.
The provisions of this Number apply to installations for traditional stock rearing and intensive stock rearing.
When installations are constructed, the minimum distances from residential areas required in accordance with the recognised rules of stock rearing shall be observed. These include, in particular, the recommendations of the Swiss Federal Research Station for Farm Management and Agricultural Engineering.
Ventilation systems must comply with the recognised rules of ventilation engineering. These include, in particular, the recommendations given in the Swiss Standard on Climatisation of Animal Houses.
The authority shall specify the preventive emission limits in terms of Article 4; Annex 1 Number 62 does not apply. The FOEN shall issue recommendations.
The provisions of this Number apply to installations for smoking meat, sausages and fish.
Number 81 does not apply.
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of organic substances shall be expressed as total carbon. They must not exceed the following limit values: a. For hot smoking at a mass flow of 50 g/h or more 50 mg/m3 b. For cold smoking at a mass flow of 50 g/h to 300 g/h 120 mg/m3 c. For cold smoking at a mass flow of over 300 g/h 50 mg/m3
The provisions of this Number apply to:
1Processing installations and storage facilities where odours may develop shall be housed in closed rooms.2Strong-smelling flue gases shall be captured and fed into a flue gas purification system.3Raw and intermediate products shall be stored in sealed containers.
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
The provisions of this Number apply to installations in which grass, maize plants and similar green fodder, marc, potatoes and sugar beet chips are dried.
Dust emissions shall be limited as far as is technically and operationally feasible and economically acceptable, but at least to 150 mg/m3.
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
Facilities for the storage of liquid manure and liquid fermentation products must be equipped with a permanently effective cover to limit ammonia and odour emissions. The FOEN and the Federal Office for Agriculture shall issue joint recommendations.
1Liquid manure and liquid fermentation products shall be spread on areas with slopes of up to 18 per cent using suitable methods with the lowest possible emissions if these areas on the farm total 3 or more hectares.2The following apply as suitable methods in accordance with paragraph 1:
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of gaseous and vaporous organic substances shall be expressed as total carbon. In the case of installations with a roasting capacity of more than 100 kg of raw product per hour, they must not exceed the following limit values:
The provisions of Number 81 also apply to installations in which materials are treated by direct contact with furnace flue gases.
1The provisions of this Number apply to:
Total dust emissions must not exceed the following limit values:
1The emission limitation requirements specified in Annex 1 Number 71 do not apply to gaseous and vaporous organic emissions of Class 2 and Class 3 substances as specified in Annex 1 Number 72.2These emissions shall be expressed as total carbon and at a mass flow of 3 kg/h or more they must not exceed a total of 150 mg/m3.3If paints are used which, in addition to water, exclusively contain up to 15 % (m/m) ethanol as a solvent, emissions of ethanol must not exceed 300 mg/m3at a mass flow of 3 kg/h or more.
1The emission limitation requirements specified in Annex 1 Number 7 do not apply to drying and stoving installations in which drying or stoving is carried out at temperatures of more than 120 °C.2Emissions of gaseous and vaporous organic substances shall be expressed as total carbon and at a mass flow of more than 250 g/h they must not exceed the following limit values:
The provisions of Number 81 also apply to installations in which products are treated by direct contact with furnace flue gases.
1The provisions of this Number apply to installations in which municipal or special waste is incinerated or thermally decomposed. They are not applicable to installations for incinerating waste wood, paper and similar waste (Number 72) or sulphite waste liquor from pulp manufacture (Number 73), or to cement kilns (Number 11).2Municipal waste means waste from households and other waste of similar composition. It includes in particular:
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Where emission limitation requirements specified in Annex 1 apply, they apply irrespective of the mass flows specified therein.
1The emission limit values are based on the following flue gas oxygen contents:
1Emissions must not exceed the following limit values:
1The following shall be continuously measured and recorded:
Strong-smelling waste and waste which emits dangerous vapours shall be stored in closed bunkers, rooms or tank installations. The waste air shall be extracted and purified.
1Municipal and special waste must not be incinerated in installations with a rated thermal input of less than 350 kW.2This prohibition does not apply to special waste from hospitals which, due to its composition, cannot be disposed of as municipal waste.
1In cases where emissions may be especially hazardous to the environment, the installation owner shall determine the emissions to be expected by means of preliminary tests with small amounts of waste and shall inform the authorities of the results before the waste is incinerated.2Emissions are regarded as particularly hazardous to the environment if they are both highly toxic and persistent, such as polyhalogenated aromatic hydrocarbons.
1The provisions of this Number apply to installations in which waste made up of the following types of substances is incinerated or thermally decomposed alone or together with wood fuels as specified in Annex 5:
The emission limit values are based on a flue gas oxygen content of 11 % (v/v).
Dust emissions must not exceed the following limit values:
Combined emissions of lead and zinc must not exceed 5 mg/m3.
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of gaseous organic substances, expressed as total carbon, must not exceed 50 mg/m3.
1Emissions of carbon monoxide must not exceed 250 mg/m3.1bisIn the case of installations with a rated thermal input of over 10 MW, emissions of carbon monoxide must not exceed 150 mg/m3.2In the case of installations with a rated thermal input of more than 10 MW, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 150 mg/m3.
The installation shall be operated with an automatic combustion control system.
Waste as specified in Number 721 must not be incinerated in installations with a rated thermal input of less than 350 kW.
1The emission limitation requirement specified for sulphur oxides in Annex 1 Number 6 does not apply.2Emissions of sulphur oxides, expressed as sulphur dioxide, must not exceed 4.0 kg per tonne of waste liquor incinerated.
For comparison with the emission limit values, the measured emissions shall be averaged over an operating period of 24 hours.
1The provisions of this Number apply to installations in which solid biogenic waste and products of agriculture are incinerated or thermally decomposed alone or together with wood fuels as specified in Annex 5. Farm manure and other strong-smelling waste and products must not be either incinerated or thermally decomposed in such installations.2If such waste and products are incinerated together with waste as specified in Number 711 or Number 721, the provisions of Number 71 or Number 72 apply.3If such waste and products are incinerated together with other fuels as specified in Annex 5, the composite limit value specified in Annex 3 Number 82 applies.4The provisions of this Number do not apply to cement kilns (Number 11).
Emissions must not exceed the following limit values:| | Rated thermal input |
| --- | --- |
| | up to 1 MW | over 1 MW
up to 10 MW | over
10 MW |
| – Reference value: | | | | |
| The limit values are based on a flue gas oxygen content of | % (v/v) | 13 | 11 | 11 |
| – Total solids: | mg/m3 | 20 | 20 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 500 | 250 | 150 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide (NO2)1 | mg/m3 | 250 | 250 | 150 |
| [tab] 1At a mass flow of 2500 g/h or more |
Solid biogenic waste and products of agriculture as specified in Number 741 must not be incinerated in installations with a rated thermal input of less than 70 kW.
1Only fuels as specified in Annex 5 shall be used.2For emissions of sulphur oxides from the fuel, Annex 1 Number 6 does not apply. If coal or «medium» or «heavy» fuel oil is used, emissions of sulphur oxides, expressed as sulphur dioxide, shall be limited to such an extent that they are no higher than the unabated emissions arising from the use of a fuel quality with a sulphur content of 1.0 % (m/m).3For emissions of sulphur oxides from the treated materials, Annex 1 Number 6 applies*.*
The emission limit values are based on a flue gas oxygen content of 5 % (v/v).
Stationary internal combustion engines may only be operated with gaseous thermal and motor fuels as specified in Annex 5 Number 41 paragraph 1, or with liquid thermal and motor fuels as specified in Annex 5 Number 132, with the exception of «medium» or «heavy» fuel oil
1Particulate emissions must not exceed 10 mg/m3.2For the internal combustion engines of emergency generators, Number 827 paragraph 2 applies.
1Emissions from stationary internal combustion engines must not exceed the following limit values:| | Rated thermal input |
| --- | --- |
| | Up to 100 kW | Over 100 kW | Over 1 MW |
| – Carbon monoxide (CO) | mg/m3 | | | |
| – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 paragraph 1 | | 650 | 300 | 300 |
| – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 paragraph 1 letters d and e, if these fuels make up at least 80 % of the fuels used for annual operation | | 1300 | 650 | 300 |
| – when operating on liquid thermal or motor fuels | | 650 | 300 | 300 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide (NO2) | mg/m3 | | | |
| – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 paragraph 1 | | 250 | 150 | 100 |
| – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 letters d and e, if these fuels make up at least 80 % of the fuels used for annual operation | | 400 | 250 | 100 |
| – when operating on liquid thermal or motor fuels | | 400 | 250 | 250 |
2When operating a stationary internal combustion engine with a denitrification system, the emissions of ammonia and ammonia compounds, expressed as ammonia, must not exceed 30 mg/m3.
For test beds for internal combustion engines, the authorities shall specify preventive emission limitation requirements in accordance with Article 4; Annex 1 and Annex 2 Numbers 821–824 do not apply.
1Periodical measurement and control in accordance with Article 13 paragraph 3 must be repeated every two years.2For internal combustion engines of emergency generators, Number 827 paragraph 3 applies.
1For internal combustion engines of emergency generators that are operated for a maximum of 50 hours each year, the authority shall specify the preventive emission limits in accordance with Article 4; Annex 1 Number 6, Annex 2 Number 824 and Annex 6 do not apply.2Particulate emissions must not exceed 50 mg/m3.3Periodical measurement and control in accordance with Article 13 paragraph 3 must be repeated every six years.
The emission limit values are based on a flue gas oxygen content of 15 % (v/v).
Gas turbines may only be operated with gaseous thermal and motor fuels as specified in Annex 5 Number 41 paragraph 1, or with liquid thermal and motor fuels as specified in Annex 5, with the exception of «medium» or «heavy» fuel oil.
When operating on liquid thermal or motor fuels, soot emissions must not exceed the smoke number 2 (Annex 1 Number 22).
Emissions of carbon monoxide must not exceed the following limit values:| | Rated thermal input | | --- | --- | | | Up to 40 MW | Over 40 MW | | – Carbon monoxide (CO) | mg/m3 | | | | – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 paragraph 1 or liquid thermal or motor fuels | | 100 | 35 | | – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 paragraph 1 letters d and e, if these fuels make up at least 80 % of the fuels used for annual operation | | 240 | 35 |
Emissions of sulphur oxides, expressed as sulphur dioxide, must not exceed 120 mg/m3at a mass flow of 2.5 kg/h or more.
1Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, must not exceed the following limit values:| | Rated thermal input |
| --- | --- |
| | Up to 40 MW | Over 40 MW |
| – Nitrogen oxides (NOx) | mg/m3 | | |
| – when operating on gaseous thermal or motor fuels as specified in Annex 5 Number 41 paragraph 1 | | 40 | 20 |
| – when operating on liquid thermal or motor fuels | | 50 | 40 |
2When operating a gas turbine with a denitrification system, the emissions of ammonia and ammonia compounds, expressed as ammonia, must not exceed 10 mg/m3.
1For test beds for gas turbines, the authorities shall specify preventive emission limitation requirements in accordance with Article 4; Annex 1 and Annex 2 Numbers 831–836 do not apply.2For gas turbines of emergency generators which are operated for no more than 50 hours per year, the authorities shall specify preventive emission limitation requirements in accordance with Article 4; Annex 1 and Annex 2 Numbers 833, 834 and 836 do not apply.
The provisions of this Number apply to installations in which wood particle board and wood fibre board are produced using a dry process.
1The provisions of Number 81 also apply in the case of installations in which products are treated by direct contact with furnace flue gases.2In derogation from paragraph 1, waste wood in accordance with Annex 5 Number 31 paragraph 2 letter a may be recycled if it is suitable for thermal recycling in accordance with Article 14a paragraph 2 der ADWO.
Emission limit values are based on the following flue gas oxygen contents:
Dust emissions must not exceed the following limit values:
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of gaseous and vaporous organic substances expressed as total carbon may not exceed the following values:
Emissions of formaldehyde may not exceed 10 mg/m3.
Emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide), expressed as nitrogen dioxide, may not exceed the following values:
The flue gas content of the following shall be continuously measured and recorded:
1The provisions of this Number apply to dry cleaning installations which are operated using halogenated hydrocarbons.2The loading door of a dry cleaning machine shall be fitted with an interlock system so that it can only be opened when the concentration of gaseous and vaporous organic substances in the machine air falls below 2 g/m3.3The concentration specified for the interlock system in paragraph 2 shall be continuously monitored inside the machine around the loading door.4The dry-cleaned items must have a maximum temperature of 35 °C before being removed from the machine.5If exhaust air is extracted from the machine, it must be purified by means of an activated carbon filter or by equivalent measures.6Indoor air must be exhausted so that the operating areas are always kept under negative pressure.
1The emission limitation requirements specified in Annex 1 Number 7 do not apply.2Emissions of gaseous and vaporous organic substances, expressed as total carbon, must not exceed 20 mg/m3.
Emissions of carbon monoxide must not exceed 50 mg/m3.
1The provisions of this Number apply to installations in which the surfaces of articles and products made of metal, glass, ceramics, plastics, rubber or other materials are treated with halogenated organic substances which at a pressure of 1013 mbar have a boiling point below 150 °C.2Surface treatment installations shall be equipped and operated as follows:
1Emissions from construction sites shall be limited as far as is technically and operationally feasible and economically acceptable, particularly by appropriate operating procedures. Account shall be taken of the type, size and location of the construction site and the duration of the construction work. The FOEN shall issue guidelines.2The emission limit values specified in Annex 1 do not apply to construction machines and construction sites.Annex 3(Art. 3 para. 2 let. b)
1The provisions of this Annex apply to combustion installations which are used for the following purposes:
In combustion installations as specified in Number 1, only fuels as specified in Annex 5 shall be burned.
Periodic measurements in accordance with Article 13 paragraph 3 are not required for the following combustion installations:
1For each individual installation, emissions shall be measured under steady state conditions and in the load ranges which are relevant for assessment. In general, these are at least the highest and the lowest load point at which the installation is operated under standard operating conditions.2For installations operated with soot blowing or similar cleaning processes, dust emissions shall be measured and assessed over a half-hour period. Measurement must include the cleaning phase.
1If several individual installations form a single operating unit, then limitation of emission for each individual installation is determined by the rated thermal input (Annex 1 Number 24) of the entire operating unit (total rated thermal input).2The total rated thermal input is the sum of the rated thermal inputs of all the individual installations which make up the operating unit.3Where two or more individual installations are operated in an operating unit in order to cover a variable heat or steam requirement in changing constellations, the rated thermal inputs of the individual installations shall normally form the basis for specifying the emission limits.
1Emissions from combustion installations operating on «extra light» heating oil must not exceed the following limit values:| Combustion installations for «extra light» heating oil |
| --- |
| – Reference value:
The limit values for gaseous pollutants are based on a flue gas oxygen content of | 3% (v/v) |
| – Smoke number | 1 |
| – Carbon monoxide (CO) | 80 mg/m3 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide | |
| a. luminous radiant and tube radiant heaters | 200 mg/m3 |
| b. installations with a heating medium temperature of up to 110 °C: | 150 mg/m3 |
| c. other installations | 120 mg/m3 |
| – Ammonia and ammonium compounds, expressed as ammonia1 | 30 mg/m3 |
| Note:
1 This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2Emissions of sulphur oxides are limited by the maximum sulphur content specified in Annex 5 Number 11. The emission limitation requirement specified for sulphur oxides in Annex 1 Number 6 does not apply.3In derogation from paragraph 1, in the case of installations with a rated thermal input of over 300 MW, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 100 mg/m3.
1The authorities may specify less stringent limit values for combustion installations with a heating medium temperature of more than 150 °C in cases where compliance with the limit value of 150 mg/m3specified for nitrogen oxides in Number 411 is not technically or operationally feasible, or is economically unacceptable. However, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 250 mg/m3.2and3…
1The flue gas losses from furnaces and boilers must not exceed the following limit values:
1. during first-stage operation 6 %
2. during second-stage operation 8 %1bisThe flue gas losses from boilers used to heat rooms or water commissioned from 1 January 2019 must not exceed 4 per cent.2The authorities may specify less stringent limit values for furnaces and boilers where the shut-off temperature of the safety temperature limiter exceeds 110 °C and where compliance with the requirements specified in paragraph 1 is not technically or operationally feasible, or is economically unacceptable.
«Euro extra-light» heating oil may not be used in installations or operating units that have a rated thermal input of less than 5 MW for this thermal fuel.
1Emissions from combustion installations operating on «medium» or «heavy» fuel oil must not exceed the following limit values:| | Rated thermal input |
| --- | --- |
| | over 5 MW
up to 50 MW | over 50 MW
up to 100 MW | over 100 MW
up to 300 MW | over
300 MW |
| «Medium» and «heavy» fuel oil | | | | | |
| – Reference value: | | | | | |
| The limit values are based on a flue gas oxygen content of | % vol | 3 | 3 | 3 | 3 |
| – Total solids: | | | | | |
| For heating oils with a sulphur content not exceeding 1 % by mass: | mg/m3 | 80 | 10 | 10 | 10 |
| For other heating oils | mg/m3 | 50 | 10 | 10 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 170 | 170 | 170 | 170 |
| – Sulphur oxides (SOx), expressed as sulphur dioxide (SO2) | mg/m3 | 1700 | 350 | 200 | 150 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide (NO2) | mg/m3 | 150 | 150 | 150 | 100 |
| – Ammonia and ammonia compounds, expressed as ammonia | mg/m3 | 30 | 30 | 30 | 30 |
2The emission limit value of 1700 mg/m3for sulphur oxides shall be deemed to be met if heating oil with a sulphur content not exceeding 1 % by mass is used.
«Medium» and «heavy» fuel oil must not be used in installations or operating units which have a rated thermal input of less than 5 MW for these fuels.
1Emissions from combustion installations which operate on coal, coal briquettes or coke must not exceed the following limit values:| | Rated thermal input |
| --- | --- |
| | up to
70 kW | over 70 kW
up to 500 kW | over 500 kW
up to 1 MW | over 1 MW
up to 10 MW | over 10 MW
up to 100 MW | over
100 MW |
| Coal, coal briquettes, coke | | | | | | |
| – Reference value: | | | | | | | |
| The limit values are based on a flue gas oxygen content of | % (v/v) | 7 | 7 | 7 | 7 | 7 | 6 |
| – Total solids: | mg/m3 | 100 | 50 | 20 | 20 | 10 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 2500 | 1000 | 1000 | 150 | 150 | 150 |
| – Sulphur oxides (SOx), expressed as sulphur dioxide (SO2): | | | | | | | |
| – fluidised bed installations | mg/m3 | – | – | – | 350 | 350 | 200 |
| – other coal-fired installations | mg/m3 | – | – | – | 1300 | 350 | 150 |
| – other installations | mg/m3 | – | – | – | 1000 | 350 | 150 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide (NO2) | mg/m3 | – | – | – | 500 | 200 | 150 |
| – Ammonia and ammonium compounds, expressed as ammonia1 | mg/m3 | 30 | 30 | 30 | 30 | 30 | 30 |
| Notes:
– A dash in the table means that no limitations are specified either in Annex 3 or in Annex 1.
1 This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2The authorities shall specify preventive emission limitation requirements for inorganic substances mainly in the form of dust and also for chlorine and fluorine compounds in accordance with Article 4; Annex 1 Number 5 and the emission limitation requirements specified for chlorine and fluorine compounds in Annex 1 Number 6 do not apply.3In derogation from paragraph 1, a carbon monoxide emission limit value of 4000 mg/m3applies to central heating and residential cookers.
The requirements specified in Number 524 apply by analogy to installations in terms of Number 22 letter e and boilers with a rated thermal input of up to 70 kW that are operated with coal combustibles in accordance with Number 513.
In combustion installations with a rated thermal input of less than 1 MW, only coal, coal briquettes or coke with a sulphur content not exceeding 1 % (m/m) may be used.
1In wood-fired installations, only wood fuels as specified in Annex 5 Number 31 paragraph 1 may be used which are suitable for combustion in these installations on account of the fuel type, quality and moisture.2In addition, only wood as specified in Annex 5 Number 31 paragraph 1 letters a, b or d number 1 may be used in hand-stoked combustion installations with a rated thermal input of up to 40 kW and in open fires.3In automatic combustion installations with a rated thermal input of up to 40 kW, only wood fuels as specified in Annex 5 Number 31 paragraph 1 letters a, b or d number 1 may be used.
1Emissions from combustion installations operating on wood fuels as specified in Annex 5 Number 31 paragraph 1 must not exceed the following limit values:| | Rated thermal input |
| --- | --- |
| | up to
70 kW | over 70 kW
up to 500 kW | over 500 kW
up to 1 MW | over 1 MW
up to 10 MW | over
10 MW |
| | | | | | |
| Wood fuels | | | | | | |
| – Reference value: | | | | | | |
| The limit values are based on a flue gas oxygen content of | % (v/v) | 13 | 13 | 13 | 11 | 11 |
| – For wood fuels as specified in Annex 5 No 31 para. 1 let. a, b or d Number 1 | | | | | | |
| – for central heating and residential cookers and commercially used baking ovens: | | | | | | |
| – Total solids | mg/m3 | 100 | 50 | – | – | – |
| – Carbon monoxide (CO) | mg/m3 | 4000 | 4000 | – | – | – |
| – for hand-stoked local space heaters1and boilers: | | | | | | |
| – Total solids: | mg/m3 | 100 | 50a | 20 | 20 | 10 |
| – Carbon monoxide (CO): | mg/m3 | 2500 | 500 | – | – | – |
| – for automatically stoked hot water and steam boilers: | | | | | | |
| – Total solids | mg/m3 | 50 | 50 | 20 | 20 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 1000 | 500 | 500 | 250 | 150 |
| – for wood fuels as specified in Annex 5 Number 31 paragraph 1 letters c or d number 2 | | | | | | |
| – Total solids | mg/m3 | 50 | 50 | 20 | 20 | 10 |
| – Carbon monoxide (CO) | mg/m3 | 1000 | 500 | 500 | 250 | 150 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide (NO2) | mg/m3 | c | c | c | c | 150 |
| – Gaseous organic substances, expressed as total carbon (C) | mg/m3 | – | – | – | – | 50 |
| – Ammonia and ammonium compounds, expressed as ammonia3 | mg/m3 | – | – | – | 30 | 30 |
| Notes:
– A dash in the table means that no limitations are specified either in Annex 3 or in Annex 1.
1 In the case of one off basic stoves as specified in SN EN 15544 (one off tiled/mortared stoves – dimensioning)the emission limits for solids and CO apply up to 70 kW irrespective of their rated thermal input.
2 Does not apply to central heating cookers.
3 See the limit value specified for nitrogen oxides in Annex 1 Number 6.
4 This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2Emissions of sulphur oxides, expressed as sulphur dioxide and based on a flue gas oxygen content of 6 %, must not exceed the following values:
Hand-stoked boilers with a rated heat output of up to 500 kW must be fitted with a heat accumulator with a volume of at least 12 litres per litre of the thermal fuel storage bin. The volume must not be less than 55 litres per kW of rated heat output.2Automatic boilers with a rated heat output of up to 500 kW must be fitted with a heat accumulator with a volume of at least 25 litres per kW of rated heat output. The foregoing does not apply to wood pellet boilers with a rated thermal input of up to 70 kW.2bisIn the case of boilers with a rated heat output of over 500 kW, the authority shall specify the accumulator volume. If these boilers are used to heat rooms or water, they must be fitted with a heat accumulator with a volume of at least 25 litres per kW of rated heat output.3In derogation from paragraphs 1, 2 and 2bis, the authority may specify a smaller accumulator volume if. two or more individual installations as are operated as a single operating unit in order to cover a variable heat or steam requirement in changing situations; this is appropriate for technical or operational reasons
1Series-produced local space heaters in accordance with Number 22 letter f are exempted from an acceptance measurement provided that it is confirmed by means of a declaration of conformity under Article 7 of the Energy Efficiency Ordinance of 1 November 2017(EnEO) that the installation meets the requirements set out in Annex 1.19 EnEO.2Local space heaters in accordance with Number 22 letter f that are produced by craftsmen are exempted from an acceptance measurement if:
In the case of dust removal systems for installations with a rated thermal input of over 70 kW, uptime must normally amount to at least 90 per cent. Uptime is determined on the basis of the installation’s service life.
Emissions from combustion installations operating on gaseous fuels must not exceed the following limit values:| Combustion installations for gaseous fuels |
| --- |
| – Reference value: | |
| The limit values are based on a flue gas oxygen content of | 3% (v/v) |
| – Carbon monoxide (CO): | 100 mg/m3 |
| – Nitrogen oxides (NOx), expressed as nitrogen dioxide (NO2): | |
| a. luminous radiant and tube radiant heaters | 200 mg/m3 |
| b. installations with a heating medium temperature of over 110 °C | 110 mg/m3 |
| c. Other installations | 80 mg/m3 |
| – Ammonia and ammonium compounds, expressed as ammonia1 | 30 mg/m3 |
| 1 Note: This emission limitation requirement is only relevant for combustion installations fitted with a denitrification system. |
2In derogation from paragraph 1, emissions from installations of over 50 MW must not exceed the following values:
a. Dust 1. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letters b–e 10 mg/m3
2. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letter a 5 mg/m3
b. Sulphur oxides, expressed as sulphur dioxide 1. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letters a and c–e 35 mg/m3
2. when operated using gaseous fuels as specified
in Annex 5 Number 41 paragraph 1 letter b 5 mg/m3
c. Nitrogen oxides (nitrogen monoxide and nitrogen dioxide),
expressed as nitrogen dioxide 100 mg/m3
1The authorities may specify less stringent limit values for combustion installations with a heating medium temperature of more than 150 °C in cases where compliance with the limit value of 110 mg/m3specified for nitrogen oxides in Number 61 is not technically or operationally feasible, or is economically unacceptable. However, emissions of nitrogen oxides, expressed as nitrogen dioxide, must not exceed 200 mg/m3.2Notwithstanding the provisions of Number 61, the limit values for nitrogen oxides specified in Annex 3 Number 411 apply to gas-fired installations operating on gaseous fuels as specified in Annex 5 Number 41 letters b, d and e.3The emission limit values specified for nitrogen oxides in Annex 1 Number 6 and in Annex 3 Number 61 do not apply to gas-fired instantaneous water heaters and gas-fired storage water heaters; preventive emission control measures shall not be ordered in accordance with Article 4.
1The flue gas losses from furnaces and boilers must not exceed the following limit values:
1. during first-stage operation 6 %
2. during second-stage operation 8 %1bisFlue gas losses from boilers used to heat rooms or water that are commissioned from 1 January 2019 must not exceed 4 per cent.2The authorities may specify less stringent limit values for furnaces and boilers where the shut-off temperature of the safety temperature limiter exceeds 110 °C and where compliance with the requirements specified in paragraph 1 is not technically or operationally feasible, or is economically unacceptable.
1The requirements specified in Number 41 apply to combustion installations which operate on liquid fuels as specified in Annex 5 Number 13.2Fuels as specified in Annex 5 Number 13 may only be used in installations with a rated thermal input of less than 350 kW if:
If a single installation operates alternately on different kinds of fuel, the emission limitation requirements are determined by the fuel used in each case.
1If different kinds of fuel are burned at the same time in a single installation, the emission concentrations must not exceed the composite limit value.2The composite limit value is calculated according to the following formula:Gm=G1×E1Etot+G2×E2(21−B1)Etot(21−B2)+⋯+Gn×En(21−B1)Etot(21−Bn)where:
Gm = composite limit value based on the oxygen content B1
G1, G2… Gn = emission limit value for the various fuels
E1, E2… En = energy supplied per hour by the individual fuels
Etot = E1+ E2+ … En
B1, B2… Bn = reference value (oxygen content on which the emission limit value for the first, second and subsequent fuels is based)3To calculate the relevant sulphur emission ratio, the method described in paragraph 2 shall be adoptedmutatis mutandis .Annex 4(Art. 3 para. 2 let. c)
The provisions of this Annex apply construction machines and particle filter systems as specified in Article 19a and machines and equipment with internal combustion engines as specified in Article 20b .
1Emissions from construction machines must comply with the relevant requirements corresponding to the year of manufacture for non-road mobile machinery in accordance with Directive 97/68/EC.2In addition, exhaust emissions from construction machines must not exceed the particle count of 1×10121/kWh for solid particles with a diameter greater than 23 nm, determined in accordance with the best available technology, specifically the UNECE Particle Measurement Programmeand the test cycles specified in Directive 97/68/EC.2bisThe requirements specified in paragraphs 1 and 2 are deemed to have been met if the construction machine meets the requirements of Annex II of Regulation (EU) No 2016/1628.3The requirements specified in paragraph 2 are deemed to be complied with if the construction machine is operated with a particle filter system which meets the requirements specified in Number 32.
1Particle filter systems for construction machines must:
1The manufacturers or importers shall affix to each construction machine and particle filter system a readily visible, durable and clearly legible data plate/label including the following details:
1The holder or operator of a construction machine must carry out exhaust emission maintenance or have such maintenance carried out at least every 24 months. It must retain the results of the exhaust emission maintenance for at least two years and present it to the authorities on request.2Construction machines need not be inspected periodically in accordance with Article 13 paragraph 3. The authority shall carry out random checks of the results of exhaust emission maintenance. If there is any suspicion of excessive solid particle emissions, it may order further exhaust emission maintenance.
1The internal combustion engines of machines and equipment must meet the relevant requirements of Regulation (EU) No 2016/1628.2The emission limitation requirements specified in Annex 1 do not apply.
1The holder or operator of a construction machine must carry out exhaust emission maintenance or have such maintenance carried out at least every 24 months. It must retain the results of the exhaust emission maintenance for at least two years and present it to the authorities on request. The FOEN shall issue recommendations.2Machines and equipment with internal combustion engines need not be inspected periodically in accordance with Article 13 paragraph 3. The authority shall carry out random checks of the results of exhaust emission maintenance. If there is any suspicion of excessive solid particle emissions, it may order further exhaust emission maintenance.Annex 5(Art. 21 and 24)
1«Extra light» heating oil comprises «Euro extra-light» heating oil and «eco extra-light» heating oil.2Untreated vegetable oils and vegetable oil methyl esters that meet the requirements of standard SN EN 14214 (Liquid petroleum products – fatty acid methyl esters (FAME) for use in diesel engines and heating applications – requirements and test methods)are deemed to be equivalent to «eco extra-light» heating oil.
The sulphur content of:
1Additives containing halogen or heavy metal compounds (except iron compounds) must not be added to heating oils.2In addition, additives containing substances such as magnesium compounds which distort the results of smoke number measurement in the control of oil-fired installations must not be added to «extra light» heating oil.3Waste oils must not be added to heating oils.
Other liquid fuels means liquid organic compounds which can be combusted like «extra light» heating oil and meet the requirements specified in Number 132.
1During combustion, other liquid fuels must not produce higher or other pollutant emissions than is the case with «extra light» heating oil.2The content of pollutants in the fuel must not exceed the following limit values:| Ash | 50 mg/kg | | --- | --- | | Chlorine | 50 mg/kg | | Barium | 5 mg/kg | | Lead | 5 mg/kg | | Nickel | 5 mg/kg | | Vanadium | 10 mg/kg | | Zinc | 5 mg/kg | | Phosphorus | 5 mg/kg | | Polychlorinated aromatic hydrocarbons (e.g. PCBs) | 1 mg/kg | 3In derogation from paragraph 2, for liquid biogenic fuels the following values apply for ash and phosphorus:| Ash | 100 mg/kg | | --- | --- | | Phosphorus | 20 mg/kg |
Other liquid organic compounds which do not meet the requirements specified in Number 132 shall be regarded as special waste.
The sulphur content of coal, coal briquettes and coke must not exceed 3.0 % (m/m).
1Wood fuels means:
1. fence posts, beanpoles and other items made of solid wood used in horticulture or agriculture,
2. disposable pallets made of solid wood.2Wood fuels do not include:
a. waste wood from demolition, conversion or renovation work, waste residues from construction sites, used wooden furniture and waste wood from packaging including pallets, with the exception of disposable pallets in accordance with paragraph 1 letter d number 2, or mixtures thereof with wood fuels as specified in paragraph 1;
b. any other wooden materials, such as:
1. waste wood or wood waste which has been pressure-impregnated with wood preservatives or treated with coatings containing halogenated organic compounds;
2. wood waste or waste wood intensively treated with wood preservatives such as pentachlorophenol;
3. such waste mixed with wood fuels as specified in paragraph 1 or with waste wood as specified in letter a.
Wood pellets and briquettes that are untreated wood in accordance with Number 31 paragraph 1 letters a and b may only be commercially imported or placed on the market if:
1Gaseous fuels means:
The sulphur content of gases as specified in Number 41 letters a and b must not exceed 190 mg/kg.
1Petrol may only be imported or placed on the market if it complies with the following requirements:| Property | Unit | Minimum valuea | Maximum valuea | Test methodb | | --- | --- | --- | --- | --- | | | | | | | | Petrol | | | | | | – Research octane number,RON | | 95.0c | – | EN ISO 5164 | | – Motor octane number,MON | | 85.0c | – | EN ISO 5163 | | – Vapour pressure (DVPE): | | | | EN 13016‑1 | | – Six summer months | kPa | – | 60.0d | | | – Distillation characteristics: | | | | EN ISO 3405 | | – evaporated at 100 °C | %(V/V) | 46.0 | – | | | – evaporated at 150 °C | %(V/V) | 75.0 | – | | | – Determination of hydrocarbon types: | | | | | | – Olefins | %(V/V) | – | 18.0 | EN 15553, EN ISO 22854 | | – Aromatics | %(V/V) | – | 35.0 | EN 15553, EN ISO 22854 | | – Benzene | %(V/V) | – | 1.00 | EN 12177, EN 238, EN ISO 22854 | | – Oxygen content | %(m/m) | – | 3.7 | EN 1601, EN 13132, EN ISO 22854 | | – Oxygenates content: | | | | EN 1601, EN 13132, EN ISO 22854 | | – Methanol | %(V/V) | – | 3.0 | | | – Ethanol | %(V/V) | – | 10.0 | | | – Isopropyl alcohol | %(V/V) | – | 12.0 | | | – tert -Butyl alcohol | %(V/V) | – | 15.0 | | | – Isobutyl alcohol | %(V/V) | – | 15.0 | | | – Ethers (containing 5 or more carbon atoms) | %(V/V) | – | 22.0 | | | – Other oxygenatese | %(V/V) | – | 15.0 | | | – Sulphur content | mg/kg | – | 10.0 | EN ISO 20846, EN ISO 20884 | | – Lead content | mg/l | – | 5.0 | EN 237 | | Notes: | | a The test results are to be assessed in accordance with EN ISO 4259 «Petroleum products –Determination and application of precision data in relation to methods of test». | | b The following (joint) standards are applicable for testing: | | – EN: standard issued by the European Committee for Standardization (CEN) | | – ISO: standard issued by the International Organization for Standardization (ISO). These standards may be viewed free of charge or obtained for a fee from the Swiss Association for Standardisation, Sulzerallee 70, 8404 Winterthur; www.snv.ch. | | c For regular petrol, notwithstanding the values given in this Table, the RON must be at least 91 and the MON at least 81. | | d Applies to petrols used between 1 May and 30 September. | | e Other monoalcohols and ethers having a boiling point not greater than 210 °C | 1bisIf bioethanol is added to petrol, the following deviations from the maximum vapour pressure of 60.0 kPa specified in paragraph 1 are permissible during the six summer months, until 30 September 2030:| Bioethanol content | %(V/V) | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | 10.0 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Maximum permissible deviationa | kPa | 3.7 | 6.0 | 7.2 | 7.8 | 8.0 | 8.0 | 7.9 | 7.9 | 7.8 | 7.8 | | Notes: a Intermediate values are obtained by linear interpolation between the value immediately above and the value immediately below the bioethanol content. | 2Aviation petrol shall only be imported or placed on the market if the lead content does not exceed 0.56 g/L and the benzene content does not exceed 1 % (V/V ). Aviation petrol placed on the market shall be dyed blue.
Diesel oil shall only be imported or placed on the market if it complies with the following requirements:| Property | Unit | Minimum valuea | Maximum valuea | Test methodb | | --- | --- | --- | --- | --- | | Diesel oil | | | | | | – Cetane number | | 51.0c | – | EN ISO 5165, EN 15195, EN 16144, EN 16715 | | – Density at 15 °C | kg/m3 | – | 845.0 | EN ISO 3675, EN ISO 12185 | | – Distillation characteristics: 95 % (V/V ) recovered at | °C | – | 360 | EN ISO 3405, EN ISO 3924 | | – Polycyclic aromatic hydrocarbons | % (m/m ) | – | 8.0 | EN 12916 | | – Sulphur content | mg/kg | – | 10.0 | EN ISO 20846, EN ISO 20884, EN ISO 13032 | | Notes: | | a The test results are to be assessed in accordance with EN ISO 4259 «Petroleum products –Determination and application of precision data in relation to methods of test». | | b The following (joint) standards apply to testing: | | – EN: standard issued by the European Committee for Standardization (CEN) | | – ISO: standard issued by the International Organization for Standardization (ISO) These standards may be viewed free of charge or obtained for a fee from the Swiss Association for Standardisation, Sulzerallee 70, 8404 Winterthur; www.snv.ch. | | c For winter qualities, the cetane number, notwithstanding the value given in this Table, must at least satisfy the requirements of SN EN 590. |Annex 6(Art. 6 para. 3)
The provisions of this Annex apply to installations for which the quantity Q/S exceeds 5, where: Q = mass flow of the emitted air pollutant in grams per hour; S = value calculated in accordance with Number 9.
1The required physical stack height is calculated step by step in accordance with Numbers 3 to 6.2If more than one air pollutant is emitted, the physical stack height is calculated on the basis of the pollutant for which the quantity Q/S has the highest value.
1The parameter H0takes account of the short-term effects of the air pollutants emitted from a single installation. It is determined with the aid of Diagram 1.2The quantities Q and F depend on the emission conditions at the installation. The full load values and the fuel/emission conditions most conducive to air pollution are used to calculate H0.3The quantity S is used to limit the maximum short-term ambient air pollution levels caused by the installation to a specific value (S value). The S values specified in Number 9 are used to calculate H0.
1The parameter H0is determined in individual cases according to the recognised rules for calculating the stack height and the dispersion of flue gases if:
1The stack height for flat, obstacle-free terrain is:H1= f x H0The correction factor f takes account of long-term effects due to wind channelling.2Values between 1.0 and 1.5 are used for f as follows:
f = 1.00 for sites with no prevailing wind direction;
f = 1.25 for sites with average conditions;
f = 1.50 for valleys with pronounced wind channelling.3Intermediate values are also possible for f, depending on the site conditions.
Elevated objects (buildings and vegetation) in the vicinity of the stack are taken into account by means of a height increase I1:I1= g x Iwhere:
I = Height of the highest significant obstacle area in the region affected by the installation. Values between 0 (no obstacles) and 30 m (e.g. forest) are used for I.
g = Correction factor, with values between 0 and 1 according to Diagram 2.
The physical stack height H is calculated according to the following formula:H = H1+ I1
In justified cases, the authorities will require taller stacks, for example, in the case of: a. structures with particular shapes; b sites with particularly poor meteorological dispersion conditions; c. particular topographical conditions, such as narrow valleys, hillsides or depressions.
H (m) = Physical stack height
H0(m) = Parameter for determination of H1
H1(m) = Minimum stack height for flat, obstacle-free terrainI (m) = Height of the highest significant obstacle areaI1(m) = Height increase for buildings and vegetation
f (–) = Correction factor for long-term effects due to wind channellingg (–) = Correction factor for buildings and vegetationQ (g/h) = Mass flow of the emitted air pollutant; emissions of nitrogen oxides (nitrogen monoxide and nitrogen dioxide) are expressed as nitrogen dioxide
Rn(m3/h) = Volume flow of the flue gas under standard conditions (0 °C, 1013 mbar)
t (°C) = Flue gas temperature at the stack outlet
Δt (°C) = t–10 °C
F (m4/s3) = Lift flux; F = 3.18 × 10–6× Rn× Δt
S (µg/m3) = S value (cf. Numbers 3 and 9)
| Pollutant | S (µg/m3) |
|---|---|
| Suspended particulates (PM10)1 | 50 |
| Hydrogen chloride, expressed as HCl | 100 |
| Chlorine | 150 |
| Hydrogen fluoride and inorganic gaseous fluorine compounds, expressed as HF | 1 |
| Carbon monoxide | 8000 |
| Sulphur oxides, expressed as sulphur dioxide | 100 |
| Hydrogen sulphide | 5 |
| Nitrogen oxides, expressed as nitrogen dioxide | 100 |
| Substances listed in Annex 1 Number 5: | |
| – Class 1 | 0.5 |
| – Class 2 | 2 |
| – Class 3 | 5 |
| Substances listed in Annex 1 Number 7: | |
| – Class 1 | 50 |
| – Class 2 | 200 |
| – Class 3 | 1000 |
| Substances listed in Annex 1 Number 8: | |
| – Class 1 | 0.1 |
| – Class 2 | 1 |
| – Class 3 | 10 |
| 1 Fine particulate matter with an aerodynamic diameter of less than 10 µm. |
Diagram 1
Diagram 2I = Height of the highest significant obstacle area (Number 5)
H1 = Minimum stack height for flat, obstacle-free terrain (Number 4)Annex 7(Art. 2 para. 5)
| Pollutant | Ambient air limit value | Statistical definition |
|---|---|---|
| Sulphur dioxide (SO | 30 µg/m3 | Annual average (arithmetic mean) |
| 100 µg/m3 | 95 % of half-hour means for one year ≤ 100 µg/m3 | |
| 100 µg/m3 | 24-hour mean; must not be exceeded more than once per year | |
| Nitrogen dioxide (NO | 30 µg/m3 | Annual average (arithmetic mean) |
| 100 µg/m3 | 95 % of half-hour means for one year ≤ 100 µg/m3 | |
| 80 µg/m3 | 24-hour mean; must not be exceeded more than once per year | |
| Carbon monoxide (CO) | 8 mg/m3 | 24-hour mean; must not be exceeded more than once per year |
| Ozone (O | 100 µg/m3 | 98 % of half-hour means for one month ≤ 100 µg/m3 |
| 120 µg/m3 | 1-hour mean; must not be exceeded more than once per year | |
| Suspended particulates (PM10)1 | 20 µg/ma | Annual average (arithmetic mean) |
| 50 µg/m3 | 24-hour mean; must not be exceeded more than once per year | |
| Suspended particulatesb (PM2.5)b | 10 µg/m3 | Annual average (arithmetic mean) |
| Lead (Pb) in PM10 | 500 ng /m3 | Annual average (arithmetic mean) |
| Cadmium (Cd) in PM10 | 1.5 ng/m3 | Annual average (arithmetic mean) |
| Total dust deposition | 200 mg/m2× day | Annual average (arithmetic mean) |
| Lead (Pb) in dust fallout | 100 µg/m2× day | Annual average (arithmetic mean) |
| Cadmium (Cd) in dust fallout | 2 µg/m2× day | Annual average (arithmetic mean) |
| Zinc (Zn) in dust fallout | 400 µg/m2× day | Annual average (arithmetic mean) |
| Thallium (Tl) in dust fallout | 2 µg/m2× day | Annual average (arithmetic mean) |
| Notes: mg = milligram: 1 mg = 0.001 g µg = microgram: 1 µg = 0.001 mg ng = nanogram: 1 ng = 0.001 µg d = day The sign ≤ means «less than or equal to». a Fine particulate matter with an aerodynamic diameter of less than 10 µm. | ||
| b Fine particulate matter with an aerodynamic diameter of less than 2.5 µm. |