BEK no. 808 of 25/09/2003 Ministry of the Environment and Food executive order on big guy Additional information Show / hide Additional information Executive Order on the limitation of certain air pollutant emissions from large combustion plants. 1) Pursuant to section 7, subsection 1, nos. 1, 2, 8, § 7 a, § 13, § 35, § 83, para. 1, and § 110, para. 3 and 4 of the Environmental Protection Act, cf. Executive Order no. 753 of 25 August 2001, stipulates: Chapter 1 Territory § 1. The Executive Order covers combustion plants intended for energy production with a nominal thermal power of 50 MW and above, regardless of fuel type (solid, liquid or gaseous). PCS. 2. The Executive Order supplements the rules in the Executive Order on the approval of listed companies and the Executive Order on the limitation of emissions of sulfur dioxide and nitrogen oxides from power plants. The approval authority may impose stricter requirements than those set out in the executive order. PCS. If two or more separate new plants are installed in such a way that the flue gas from them, taking into account the technical and economic conditions, can, in the opinion of the approval authority, be discharged through a common chimney, such a combination of plants shall be considered as one unit. PCS. 4. The Executive Order does not include: 1) Plants that directly use combustion products in production. 2) Installations where the combustion products are used for direct heating, drying or any other treatment of objects or materials, such as. heaters or heat treatment furnaces. 3) Post-incineration plant, ie. technical equipment which is intended to purify the flue gas during combustion and which is not operated as an independent combustion plant. 4) Catalytic cracking catalyst regeneration plant. 5) Plant for the conversion of hydrogen sulphide to sulfur. 6) Reactors used in the chemical industry. 7) Coke oven blocks. 8) Cowpers. 9) Technical devices used for propulsion of vehicles, ships or aircraft. 10) Gas turbines used on offshore platforms. 11) Gas turbines for which approval has been granted in accordance with Chapter 5 of the Environmental Protection Act before 8 October 2003. 12) Plants powered by diesel, petrol and gas engines. 13) Plants covered by the Executive Order on plants that incinerate waste. Chapter 2 Definitions § 2. For the purposes of this Executive Order: 1) Emission: Emission to the air of substances from combustion plants. 2) Flue gas: Gaseous emission containing solid, liquid or gaseous emissions. Their volume flow is expressed in cubic meters per hour at normal temperature (273 K) and normal pressure (101.3 kPa) and after deduction of water vapor content (Nm 3 / h). 3) Emission limit value: The permitted amount of a substance in flue gas from a combustion plant that must be discharged into the air for a given period of time. It is determined as mass in relation to the volume of the flue gas, expressed in mg / Nm 3 , at an oxygen content of the flue gas of 3% by volume for liquid and gaseous fuels and 6% by volume for solid fuels and 15% for gas turbines. 4) Percentage of desulphurisation: The ratio between the amount of sulfur not emitted to the air from the combustion plant in a given period and the amount of sulfur contained in the fuel supplied to the combustion plant and used during the same period. 5) Fuel: Any solid, liquid or gaseous flammable substance which feeds the combustion plant. 6) Combustion plant: Technical device in which fuel is oxidized for the purpose of using the heat thus generated. 7) Mixed plant: Combustion plant that can be fed simultaneously or alternately with two or more types of fuel. 8) New plant: Combustion plant or gas turbine plant for which approval has been granted in accordance with Chapter 5 of the Environmental Protection Act on 8 October 2003 or later. 9) Existing plant: Combustion plant for which approval in accordance with the Environmental Protection Act has been granted in the first instance before 8 October 2003. 10) Biomass: Products consisting of vegetable material, derived from agriculture or forestry, which can be used for the utilization of the energy content, and the following wastes used as fuel: a) Vegetable wastes from agriculture and forestry. b) Vegetable waste from the food industry if the heat of combustion is recycled. c) Fibrous vegetable waste from the production of virgin pulp and the production of paper from pulp, if it is co-incinerated at the production site and the heat of incineration is recycled. d) Cork waste. (e) Wood waste other than wood waste which may contain halogenated organic solvents or heavy metals resulting from treatment with wood preservatives or surface treatment agents, including construction and demolition waste. 11) Gas turbine: A rotating machine that converts thermal energy into mechanical work, and which mainly consists of a compressor, a thermal device in which the fuel is oxidized in order to heat the working medium, and a turbine. Chapter 3 Limit values etc. § 3. New plants must comply with the emission limit values that appear from part B in appendices 1-5 for SO 2 , NO x and dust, cf., however, § 4, subsection 6. PCS. Existing plants must comply with the emission limit values set out in Part A in Annexes 1-5 for SO 2 , NO x and dust, cf., however, section 4, subsection 1-5. PCS. 3. For establishments established before 1 July 1987, subsection 2 first applicable from 1 January 2008. PCS. If the power output of a plant is increased by at least 50 MW, the emission limit values in Part B of Annexes 1-5 shall apply to the new part of the plant, and the limit values shall be determined in relation to the thermal power of the entire plant, cf. otherwise there is a significant change in the plant, cf. section 11, subsection 3 of the Executive Order on the approval of listed companies, the requirements for new facilities in this Executive Order apply. PCS. Mixed plants must comply with the emission limit values calculated according to the rules in Annex 7. § 4. For facilities covered by § 3, para. 3, the requirements in § 3, para. 2, is not complied with if a written declaration for the installation is submitted to the approval authority before 30 June 2004 that the installation will not be in operation for more than 20,000 hours in the period from 1 January 2008 until 31 December 2015. , after which it is finally taken out of service. PCS. 2. For facilities covered by subsection 1, once a year, no later than 1 May, a statement shall be sent to the supervisory authority on how much time per. 31 December the previous year had been spent and how much time was left of the plant's permitted operating hours. PCS. 3. For facilities covered by section 3, subsection 2, which has a nominal thermal power of at least 400 MW, an emission limit value of 800 mg / Nm 3 applies to SO 2 , provided that the plant is not in operation for more than the following number of hours calculated as a rolling average over a five-year period: 1) Until 31 December 2015: 2000 hours per year. 2) From 1 January 2016: 1500 hours per year. PCS. 4. For facilities covered by section 3, subsection 2, which is fired with solid fuel, which has a nominal thermal power of at least 500 MW, and which from 2008 is not in operation for more than 2000 hours per year calculated as a rolling average over a five-year period, an emission limit value of 600 mg applies. / Nm 3 for NO X (measured as NO 2 ). For such plants, which after 1 January 2016 are not in operation for more than 1500 hours per year calculated as a rolling average over a five-year period, an emission limit of 450 mg / Nm 3 applies to NO X (measured as NO 2 ). PCS. 5. For plants which, during a 12-month period expiring on 1 January 2001, were fired and continue to be fired with solid fuels with a volatile matter content of less than 10%, an emission limit value of 1 shall apply until 1 January 2018. 1200 mg / Nm 3 for NO X (measured as NO 2 ). PCS. 6. Gas turbines for emergencies operating for less than 500 hours per year are not covered by the limit values set out in Annex 4, Part B 2. Undertakings with such installations must each year submit to the approval authority an overview of the amount of time spent. PCS. 7. The approval authority shall stipulate in the 1, 3, 4, 5 and 6 mentioned conditions on the number of permitted operating hours. PCS. 8. The approval authority shall immediately notify the Danish Environmental Protection Agency of the 1 and 6 mentioned cases. § 5. The supervisory authority may for up to six months grant dispensation from the requirement of compliance with the in § 3, para. 1-2, set emission limit values for SO 2 for plants that normally use low-sulfur fuel to comply with the emission limit values, when the said emission limit values can not be complied with due to an interruption in the supply of low-sulfur fuel because a serious shortage of this product has occurred. PCS. (2) The supervisory authority may exceptionally grant a dispensation from the requirement of compliance with the provisions of section 3 (1). 1-2, set emission limit values for plants that normally use gaseous fuels and that would otherwise have to be equipped with a flue gas treatment plant to comply with the limit values if the plant is allowed to use other fuels due to a sudden interruption in the gas supply. The exemption may not exceed a period of ten days, unless there are compelling reasons to maintain the energy supply. PCS. 3. The supervisory authority shall immediately notify the Danish Environmental Protection Agency of the 1 and 2 mentioned cases. § 6. When granting approvals pursuant to Chapter 5 of the Environmental Protection Act, the approval authority shall stipulate conditions in the approval that at least correspond to the limit values mentioned in § 3. PCS. 2. For facilities covered by section 3, subsection 3, the supervisory authority announces by order conditions that emission limit values that at least correspond to those in § 3, para. 2, mentioned, must be complied with after 1 January 2008. PCS. 3. The approval authority shall ensure that in connection with approval for the establishment or expansion of plants covered by this Executive Order, it is examined whether combined heat and power production is technically and economically possible. If combined heat and power production is technically and economically possible, the approval authority sets conditions in the environmental approval that the plant is developed accordingly. PCS. 4. It must appear from the in paragraph. 1 mentioned approvals and para. 2, which procedures must be used in the event that the flue gas treatment plant does not function properly or fails. It must be stipulated that in the event of a failure of the cleaning equipment, the operation of the plant must be reduced to the extent necessary or stopped if normal operation has not been achieved within 24 hours, or that the plant must be operated with less polluting fuels. The total duration of operation of the plant without purification must not exceed 120 hours in any twelve month period. PCS. 5. The supervisory authority may dispense with the time limits in subsection (1). 4, if the authority finds that there is a heavier need to maintain the energy supply, or if a plant where there has been a failure of the flue gas treatment plant, for a limited period would otherwise be replaced by another plant that would give rise to a larger emission. Chapter 4 Self-control § 7. The approval authority stipulates in the approval pursuant to Chapter 5 of the Environmental Protection Act, or for existing companies by order, conditions on the self- inspection of the facility, which must be carried out, including deadlines for sending information to the supervisory authority. The requirements shall be determined in accordance with Annex 6. PCS. 2. The approval authority shall stipulate in the approval pursuant to Chapter 5 of the Environmental Protection Act, or for existing companies by order, conditions that the supervisory authority must be notified within 24 hours in the event of a failure of a flue gas treatment plant. Chapter 5 Reporting to the Danish Environmental Protection Agency § 8. The supervisory authority immediately forwards the in § 4, para. 2, as well as appendix 6, section C, mentioned information to the Danish Environmental Protection Agency. Chapter 6 Entry into force, transitional provisions, etc. § 9. The Executive Order enters into force on 8 October 2003. PCS. Executive Order no. 689 of 15 October 1990 on the limitation of emissions of sulfur dioxide, nitrogen oxides and dust from large combustion plants is repealed. PCS. 3. In the case of appeals against decisions notified at first instance before 8 October 2003, the rules in this Executive Order shall apply. Ministry of the Environment, 25 September 2003 Hans Chr. Schmidt / Karsten Skov Annex 1 SOLID FUEL, EMISSION LIMIT VALUES FOR SO 2 A. _ Limit values for emission of SO 2 expressed in mg / Nm 3 (O 2 content 6%) to be used for existing plants pursuant to section 3, subsection 2: Fuel type Plant size Plant size Plant size 50 up to and including > 100 up to and including > 500 MW th 100 MW th 500 MW th Solid fuel 2000 400 + 4 ´ (500 ¸ plant 400 size) If the above emission limit values cannot be reached due to the nature of the fuel, the plants must comply with a desulphurisation rate of at least: 60% for plants with a nominal thermal power up to and including 100 MW th. 75% for plants over 100 MW th and up to and including 300 MW th. 90% for plants over 300 MW th. 94% for plants over 500 MW th. However, at least 92% in the case of a contract for the installation of a flue gas desulphurisation or lime injection plant, the installation of which has commenced before 1 January 2001. B. Limit values for emission of SO 2 expressed in mg / Nm 3 (O 2 content 6%) to be used for new plants pursuant to section 3, subsection 1, with the exception of gas turbines: Fuel type Plant size Plant size 50 up to and including 100 > 100 MW th MW th Biomass 200 200 Other solid fuels 850 200 If the above emission limit values cannot be reached due to the nature of the fuel, the plants must comply 1) a desulphurisation rate of at least 92% or a limit value of 300 mg / Nm 3 , for plant sizes up to and including 300 MW th, 2) a desulphurisation rate of at least 95%, but not exceeding a limit value of 400 mg / Nm 3 for plant size of more than 300 MW th. Appendix 2 LIQUID FUEL, EMISSION LIMIT VALUES FOR SO 2 A. Limit values for emission of SO 2 expressed in mg / Nm 3 (O 2 content 3%) to be used for existing plants pursuant to section 3, subsection 2: Fuel type Plant size Plant size Plant size > 50 up to and > 300 up to and including > 500 MW th including 300 MW 500 MW th th Liquid fuel 1700 400 + 6.5 ´ (500 ¸ plant 400 size) B. Limit values for emission of SO 2 expressed in mg / Nm 3 (O 2 content 3%) to be used for new plants pursuant to section 3, subsection 1, with the exception of gas turbines: Fuel type Plant size Plant size Plant size > 50 up to and > 100 up to and including > 300 MW th including 100 MW 300 MW th th Liquid fuel 850 200 + 1 ´ (300 ¸ plant size) 200 Appendix 3 GASEFUL FUEL, EMISSION LIMIT VALUES FOR SO 2 A. Limit values for emission of SO 2 expressed in mg / Nm 3 (O 2 content 3%) to be used for existing plants pursuant to section 3, subsection 2: Fuel type Limit value (mg / Nm 3 ) Liquefied gas 5 Gases with low calorific value from 800 gasification of refinery residues, coking plant gas, blast furnace gas Other gaseous fuels other than gases 35 from coal gasification B. Limit values for emission of SO 2 expressed in mg / Nm 3 (O 2 content 3%) to be used for new plants pursuant to section 3, subsection 1: Fuel type Limit value (mg / Nm 3 ) Liquefied gas 5 Coke plant gas with low calorific value 400 Blast furnace gas with low calorific 200 value Other gaseous fuels 35 Appendix 4 EMISSION LIMIT VALUES FOR NO X (MEASURED AS NO 2 ) A. Limit values for emission of NO x expressed in mg / Nm 3 (O 2 content 6% for solid fuel, 3% for liquid and gaseous fuel) to be used for existing plants pursuant to § 3, para. 2: Fuel type Plant size Plant size 50 up to and including 500 > 500 MW th MW th Solid fuel 650 650 until 1 January 2008 until 1 January 2008 500 from 1 January 2008 600 200 from 1 January 2008 from 1 January 2016 Liquid fuel 450 450 until 1 January 2008 400 from 1 January 2008 Gaseous fuel 350 350 until 1 January 2008 until 1 January 2008 300 200 from 1 January 2008 from 1 January 2008 B. 1. Limit values for NO x emission expressed in mg / Nm 3 (O 2 content 6% for solid fuels, 3% for liquid and gaseous fuels) to be used for new plants pursuant to § 3 (1), with the exception of gas turbines: Fuel type Plant size Plant size Plant size 50 up to and > 100 up to and > 300 MW th including 100 MW including 300 MW th th Biomass 400 300 200 Other solid fuels 400 200 200 Liquid fuel 400 200 200 Natural gas 150 150 100 Other gaseous 200 200 200 fuels 2. Limit values for emission of NO x expressed in mg / Nm 3 (O 2 content 15%) to be used for a single gas turbine unit pursuant to § 3, para. 1 (the limit values only apply to a load of more than 70%): Fuel type Plant size 50 MW th and above (thermal effect under ISO conditions) Natural gas 1) 50 2) Gaseous fuel other than natural gas 120 Liquid fuels (light and semi-heavy 120 distillates) For individual gas turbine units which do not fall into any of the above categories but which have an efficiency of more than 35% (determined by ISO base load conditions), the emission limit value shall be 50 ´ h / 35, where h is the gas turbine efficiency expressed as a percentage (and by ISO base load conditions). 1) Natural gas means naturally occurring methane with a maximum of 20% (by volume) of inert substances and other compounds. 2) 75 mg / Nm 3 in the following cases where the gas turbine efficiency is determined by ISO base load conditions: a) Gas turbines used in a combined heat and power system with an overall efficiency exceeding 75%. (b) Gas turbines used in combined plants which, on average, have an overall annual electricity efficiency of more than 55%. c) Gas turbines with mechanical drives. Appendix 5 EMISSION LIMIT VALUES FOR DUST A. Limit values for emission of dust expressed in mg / Nm 3 (O 2 content 6% for solid fuel, 3% for liquid and gaseous fuel) to be used for existing plants pursuant to § 3, para. 2: Fuel type Plant size Plant size 50 up to and including > 500 MW th 500 MW th Solid fuel 100 50 1) Liquid fuel 50 2) Blast furnace gas 10 Industrial gas from the 50 iron and steel industry which can be used elsewhere Other gaseous fuels 5 1) A limit value of 100 mg / Nm 3 may be used for plants covered by section 3, subsection 3, with a nominal thermal power of at least 500 MWth, which burns solid fuels with a heat content of less than 5800 kJ / kg (net calorific value), a moisture content of more than 45% by weight, a combined moisture and ash content of more than 60% by weight and a calcium oxide content of more than 10%. 2) A limit value of 100 mg / Nm 3 can be used for plants with a thermal power of less than 500 MW, which burn liquid fuel with an ash content of more than 0.06%. B. Emission limit values for dust expressed in mg / Nm 3 (O 2 content 6% for solid fuels, 3% for liquid and gaseous fuels) to be applied to new plants pursuant to § 3 (1), with except for gas turbines: Fuel type Plant size Plant size 50 up to and including 100 > 100 MW th MW th Solid fuel 50 30 Liquid fuel 50 30 Blast furnace gas 10 Industrial gas from the 30 iron and steel industry which can be used elsewhere Other gaseous fuels 5 Appendix 6 REQUIREMENTS FOR SELF-INSPECTION A. Measurement of emissions from combustion plants. Requirements for new facilities and from 27 November 2004 for existing facilities covered by section 3, subsection 2. The concentrations of SO 2 , NO x and dust from combustion plants with a nominal thermal power of 100 MW or more are measured with continuous measuring equipment. However, continuous measurement is not required in the following cases: Combustion plants with a service life of less than 10,000 operating hours. 2. SO 2 and dust from natural gas boilers or from gas turbines fired with natural gas. SO 2 from gas turbines or boilers fired with oil of known sulfur content, if no desulphurisation equipment is present. 4. SO 2 from biomass firing plants, if the company can document that the SO 2 emissions can under no circumstances be higher than the prescribed emission limit values. Where continuous measurement is not required, sampling measurements shall be required at least every six months. As an alternative, appropriate determination methods, which must be approved by the approval authority, may be used to assess the levels of the aforementioned pollutants present in the emission. As a method, relevant CEN standards should be used as soon as they are available. In the absence of CEN standards, ISO standards apply, national or international standards that ensure data of equivalent scientific quality. The continuous measurements carried out in accordance with the above shall include the relevant operating parameters for oxygen content, temperature, pressure and water vapor content. Continuous measurement of the water vapor content of the flue gas is not necessary, provided that the gas sample is dried before the emissions are analyzed. Representative measurements, ie. sampling and analysis, of relevant pollutants and operating parameters as well as reference measurement methods for calibration of automatic measuring systems shall be carried out in accordance with CEN standards as soon as such are available. As long as there are no CEN standards, ISO standards, national or international standards are used that ensure data of equivalent scientific quality. Continuous measurement systems shall be subject to control by means of parallel measurements by reference methods at least once a year. Requirements for existing facilities covered by section 3, subsection 2, with the exception of facilities established before 1 July 1987, valid until 27 November 2004. The concentrations of SO 2 , NO x and dust from combustion plants with a nominal thermal power of 300 MW or more are measured with continuous measuring equipment. Monitoring of SO 2 and dust may, however, be restricted to sampling measurements or other suitable methods for determining them, provided that these measurements or methods, which must be verified and approved by the competent authorities, can be used to determine their concentration. However, the approval authority may, on existing facilities which are covered by section 3, subsection 2, which are less than 300 MW th, require continuous measurement of SO 2 , dust and NO x where this is found necessary. If continuous measurements are not required, sampling measurements or appropriate determination methods, to be approved by the approval authority, shall be used at regular intervals to assess the quantities of the said pollutants present in the emission. As a method, relevant CEN standards should be used as soon as they are available. In the absence of CEN standards, ISO standards apply, national or international standards that ensure data of equivalent scientific quality. B. Assessment of the measurements Existing facilities: In the case of continuous measurements, the emission limit values in Part A in Appendix 1-5 are considered, cf. section 3, subsection 2, for complied with when an assessment of the results for the operating time within a calendar year shows that none of the average values per. calendar month exceeds the emission limit values and for a) SO 2 and dust: 97% of all average values, measured over 48 hours, do not exceed 110% of the emission limit values. b) NO x : 95% of all average values, measured over 48 hours, do not exceed 110% of the emission limit values. The periods covered by section 6 (1) are not taken into account. 4 and para. 5, nor for start- up or shutdown periods. In cases where only sample measurements or other suitable emission determination methods are required, the emission limit values set out in Annexes 1-5 shall be deemed to be complied with if the results of each series of measurements or of the other methods defined and defined in the approval, does not exceed the emission limit value. 2. New facilities: The emission limit values are considered to be complied with when an assessment of the results for the operating time within a calendar year shows that none of the validated daily average values exceeds the emission limit values and 95% of all validated hourly average values during a year do not exceed the limit values set out in Part B i Appendices 1-5 by more than 200%. The definitions of "validated average values" are set out in Part B, point 3. The periods covered by section 6 (1) are not taken into account. 4 and para. 5, nor for start- up or shutdown periods. In cases where only sample measurements or other suitable emission determination methods are required, the emission limit values shall be deemed to be complied with if the results of each series of measurements or of the other methods defined and defined in the approval do not exceed the emission limit value. Validated average values. The values of the 95% confidence intervals associated with a single measurement result shall not exceed the following percentages of the emission limit values: SO 2 : 20% NO x : 20% Dust: 30%. The validated average values per hour and per. day is determined from the validly measured hourly average values after deducting the value of the confidence interval specified above. Days when more than three hourly average values are invalid because the continuous measurement system is not working properly or is being maintained are not validated. If more than ten days in a year are not validated due to such circumstances, the supervisory authority shall require appropriate measures to be taken to make the continuous measurement system more reliable. C. The plants' emissions statement and reporting of the total annual emissions Up to and including 2003, the statement of the total annual emissions of SO 2 and NO x must be notified to the supervisory authority. From 2004, the following data must be communicated to the supervisory authority: 1) the total annual emissions of SO 2 , NO x and dust (as total dust); 2) the total annual energy effect in relation to net calorific value, broken down by fuel types: Biomass, other solid fuels, liquid fuels, natural gas, other gas. Where continuous monitoring is used, the mass of the daily emissions of each pollutant shall be aggregated on the basis of the volume flows of the flue gases. Where continuous monitoring is not used, on the basis of the provisions of Part A, point 2, assessments of the total annual emissions shall be made in accordance with the requirements of the approval authority. The information must be submitted to the supervisory authority no later than 1 May of the following year. Appendix 7 DETERMINATION OF EMISSION LIMIT VALUES FOR MIXED INSTALLATIONS For facilities covered by section 3, subsection 5, emission limit values are set as follows: A. Installations using two or more types of fuel at the same time and not covered by section C: 1) The emission limit value is found for each type of fuel and each pollutant corresponding to the nominal thermal power of the installation as specified in Annexes 1-5, 2) weighted emission limit values for each fuel type are determined by multiplying each of the above limit values by the thermal power for each fuel type and dividing the result of each multiplication by the sum of the thermal power from all fuel types, and 3) the weighted limit values for each fuel type are added together. B. Plants using two or more types of fuel alternately: Emission limits are set that correspond to each type of fuel used compared with plant sizes, cf. Appendices 1-5. C. Mixed plants where distillation and conversion products from crude oil refining for own consumption are used alone or in combination with other fuels: 1) The emission limit value for the type of fuel with the highest emission limit value (determining fuel type) applies if the thermal power emitted by this type of fuel during operation of the plant is at least 50% of the sum of the thermal power from all fuel types. 2) If the amount of heat from the determining fuel type is less than 50%, the emission limit value is determined as follows: (a) The emission limit value is found for each type of fuel and each pollutant corresponding to the nominal thermal power of the installation, as specified in Annexes 1-5; (b) the emission limit value exists for the determining fuel type (the type of fuel which has the highest emission limit value according to Annexes 1-5 or, in the case of two fuels with the same emission limit value, the type which emits the greatest thermal power). This value is obtained by multiplying the emission limit value for this type of fuel referred to in Annexes 1-5 by a factor of two and by subtracting from the result the emission limit value for the type of fuel with the lowest emission limit value. (c) weighted emission limit values for each fuel type shall be determined by multiplying the limit value of the determining fuel type by its thermal power and multiplying each of the other limit values by the thermal power for each fuel type and dividing the result of each multiplication by the sum of the thermal power for all types of fuel, and (d) the weighted limit values for each fuel type shall be added together. D. As an alternative to C, the following average emission limit values can be used for sulfur dioxide (regardless of the fuel mixture used): 1) for facilities as covered by section 3, subsection 2: 1000 mg / Nm 3 as an average of all refinery facilities, 2) for facilities covered by section 3, subsection 1: 600 mg / Nm 3 as an average of all refinery plants except gas turbines. The approval authority shall ensure that the application of this provision does not lead to an increase in emissions from existing installations. Official notes 1) The Executive Order contains provisions implementing Directive 2001/80 / EC of the European Parliament and of the Council of 23 October 2001 on the limitation of emissions of certain pollutants into the air from large combustion plants, Official Journal 2001 L 309 page 1.