Archived: Air Pollutant Emission Inventory report: chapter 1

Chapter 1 – Introduction

1.1 Background on the Air Pollutant Emission Inventory

Canada’s Air Pollutant Emission Inventory (APEI) is a comprehensive inventory of air pollutant emissions at the national and provincial/territorial levels. The APEI is prepared and published by Environment and Climate Change Canada (ECCC) and serves many purposes, including the following:

The first national inventory of air pollutant emissions in Canada was compiled in 1973, with national and provincial/territorial estimates of emissions of CO, SOx, NOx, hydrocarbons and PM for the year 1970. Since then, air emission estimates for Canada have continued to be published on a regular basis.

Today the APEI comprises emissions of 17 air pollutants that contribute to smog, acid rain and diminished air quality, including:

The reporting format for the APEI organizes emissions into eleven source categories that are further broken down into 75 sectors and 70 associated subsectors (Table 1-1).

The APEI is compiled and published on an annual basis. The time series of annual emissions contained in this report is updated across the times series, from 1990 to the most recent inventory year, to indicate the trend in emissions based on consistent and current methodological approaches and data.

Generally, facility emissions data captured in the APEI originate primarily from the National Pollutant Release Inventory (NPRI), supplemented with limited data provided by provincial governments (Alberta, Manitoba, New Brunswick, Newfoundland and Labrador, Ontario and Quebec). For example, Alberta provides additional data for the Upstream Petroleum sector for the pre-2006 years, and Alberta and Newfoundland provide supplementary information for selected sources that are not reported to the NPRI. In addition to supplementing the NPRI with additional data sources as described above, the APEI incorporates estimated emissions for sources not reported to the NPRI, for example when an APEI sector includes facilities that are below the NPRI reporting threshold.

Table 1-1: APEI sector descriptions
APEI source

APEI sector

Sector descriptions

Ore and mineral industries

Aluminium industry

Alumina production through bauxite refining, primary aluminium production through smelting and refining and secondary aluminium production in which aluminium is recovered from aluminium-containing scrap.

Ore and mineral industries

Asphalt paving industry

Asphalt concrete (or hot-mix asphalt) manufacturing. Emissions are from permanent and portable hot-mix asphalt installations.

Ore and mineral industries

Cement and concrete industry

Entire process of cement production in rotary kilns as wel as the preparation of concrete and ready-mix concrete, lime manufacture and concrete batching and products.

Ore and mineral industries

Foundries

Castings of various types of ferro-alloys as well as small iron and steel foundries not associated with integrated iron and steel facilities. The types of foundries included are: open ferrous, electric arc and induction foundries.

Ore and mineral industries

Iron and steel industries

Steel production, including blast furnaces, basic oxygen furnaces, electric arc furnaces, sintering, direct reduction of iron, hot forming and semi-finishing, coke production.

Ore and mineral industries

Iron ore industry

Iron ore mining, beneficiation by concentration and sintering into pellets are included.

Ore and mineral industries

Mineral products industry

Manufacture of brick and related clay products such as pipes, liner and tiles.

Ore and mineral industries

Mining and rock quarrying

Overburden removal, drilling in rock, blasting, crushing of rock, loading of materials, transporting raw materials by conveyors or haulage trucks, scraping, bulldozing, grading, open storage pile losses and wind erosion from exposed areas.

Ore and mineral industries

Non-ferrous mining and smelting industry

Primary copper and nickel production using pyrometallurgical operations, lead ore crushing, concentrating and metallurgic processing and zinc metal production through electrolytic processes.

Oil and gas industry

Downstream oil and gas industry

Refining and processing of crude oil to make fuels or other products such as solvents or asphalt.

Oil and gas industry

Upstream oil and gas industry

Drilling, testing and servicing of wells, conventional oil and gas production, in situ bitumen extraction and open pit mining, oil sands upgrading, natural gas processing, crude oil transmission.

Electric power generation (utilities)

Coal

Electric power generation from combustion of coal by utilities and by industry for commercial sale and/or private use.

Electric power generation (utilities)

Diesel

Electric power generation from combustion of diesel by utilities and by industry for commercial sale and/or private use.

Electric power generation (utilities)

Natural gas

Electric power generation from combustion of natural gas by utilities and by industry for commercial sale and/or private use.

Electric power generation (utilities)

Waste materials

Electric power generation from combustion of waste materials by utilities and by industry for commercial sale and/or private use.

Electric power generation (utilities)

Other electric power generation

Electric power generation from other energy sources by utilities and by industry for commercial sale and/or private use.

Manufacturing

Abrasives manufacture

Manufacturing of abrasive grinding wheels, abrasive-coated materials and other abrasive products.

Manufacturing

Bakeries

Manufacturing of bakery products, other than for retail sale, including frozen baked products.

Manufacturing

Biofuel production

Production of ethanol for fuel or oils for biodiesel.

Manufacturing

Chemicals industry

Large number of different product industries including fertilizer manufacturing, plastic resins, paints and varnishes, petrochemicals and inorganic chemicals. The raw materials, processes used and products produced are in many cases unique to individual plants.

Manufacturing

Electronics

Manufacturing of electronics, such as communications equipment, semiconductors and electronic components, navigational and guidance instruments, electric lamp bulb and parts, transformers, switchgear, relay and industrial control.

Manufacturing

Food preparation

Activities related to food production for human or animal consumption, such as manufacturing of dog and cat food, sugar and confectionery products, frozen food, dairy products, meat products, and tobacco and beverage products; seafood product preparation and packaging; and fruit and vegetable canning, pickling and drying.

Manufacturing

Glass manufacture

Making of glass from sand and cullet as well as  the remelting, pressing, blowing or otherwise shaping purchased glass.

Manufacturing

Grain processing

Primary, process, terminal and transfer elevators, as well as manufacturing or processing grain for use in other products.

Manufacturing

Metal fabrication

Activities related to metal fabrication, such as: iron and steel mills and ferro-alloy manufacturing; production of iron and steel pipes and tubes, cold-rolling steel bars, sheets, strips and other steel shapes; steel wire drawing; smelting of non-ferrous metals; copper rolling, drawing, extruding and alloying; forging; stamping; and other metal manufacturing.

Manufacturing

Plastics manufacture

Manufacturing of plastics bags, plastic film and sheet, unlaminated plastic profile shapes, plastic pipes and pipe fittings, laminating plastic profile shapes (plates, sheets and rods), polystyrene foam products, urethane and other foam products, motor vehicle plastic parts, tires, rubber and plastic hose and belting, and other rubber products.

Manufacturing

Pulp and paper industry

Chemical, mechanical, recycling and semi-chemical mills, including the production of energy through the combustion of spent pulping liquor, biomass and fossil-fuel combustion. Also includes fugitive emissions from wood refining, screening and drying, and various steps in chemical recovery systems.

Manufacturing

Textiles

Textile product-related activities, including: fibre, yarn and thread manufacturing; textile and fabric finishing; fabric coating; carpet and rug manufacturing; clothing knitting; as well as clothing accessories and other clothing manufacturing.

Manufacturing

Vehicle manufacture (engines, parts, assembly, painting)

Activities related to: vehicle manufacturing, such as manufacturing of motor vehicles plastic parts, engine and power transmission equipment, automobile and light-duty motor vehicles, heavy-duty trucks, truck trailers, motor vehicle brake systems, seating and interior trim, and vehicle parts; urban transit systems; and support activities for rail transportation.

Manufacturing

Wood products

Sawmills, panel board mills (including veneer, plywood, waferboard, particle board and medium-density fiberboard mills), and other wood products manufacturing establishments (including furniture and cabinet makers, wood treating plants, wood pellet mills and Masonite manufacturers).

Manufacturing

Other manufacturing industries

Manufacturing, food production or processing industries that are not included under a specific industrial sector.

Transportation and mobile equipment

Air transportation

Piston and turbine military, commercial and general aviation (landing and take-off only), and in-flight (cruise) emissions for turbine aircraft.

Transportation and mobile equipment

Heavy-duty diesel vehicles

Diesel vehicles over 3 856 kilograms.

Transportation and mobile equipment

Heavy-duty gasoline vehicles

Gasoline vehicles over 3 856 kilograms.

Transportation and mobile equipment

Heavy-duty LPG/NG vehicles

Propane and natural gas vehicles over 3 856 kilograms.

Transportation and mobile equipment

Light-duty diesel trucks

Diesel trucks under 3 856 kilograms.

Transportation and mobile equipment

Light-duty diesel vehicles

Diesel vehicles under 3 856 kilograms.

Transportation and mobile equipment

Light-duty gasoline trucks

Gasoline trucks under 3 856 kilograms.

Transportation and mobile equipment

Light-duty gasoline vehicles

Gasoline vehicles under 3 856 kilograms.

Transportation and mobile equipment

Light-duty LPG/NG trucks

Propane and natural gas trucks under 3 856 kilograms.

Transportation and mobile equipment

Light-duty LPG/NG vehicles

Propane and natural gas vehicles under 3 856 kilograms.

Transportation and mobile equipment

Marine transportation

Marine craft in anchored, berth and underway phases.

Transportation and mobile equipment

Motorcycles

Motorcycles.

Transportation and mobile equipment

Off-road diesel vehicles and equipment

Off-road vehicles and mobile equipment using diesel fuel in mining, construction, agriculture, commercial purposes, logging, railway maintenance, and airport ground support; lawn and garden equipment using diesel fuel; and recreational vehicles using diesel fuel.

Transportation and mobile equipment

Off-road gasoline/LPG/CNG vehicles and equipment

Off-road vehicles and mobile equipment using gasoline, liquid petroleum gas, and compressed natural gas in mining, construction, agriculture, commercial purposes, logging, railway maintenance, airport ground support; lawn and garden equipment using gasoline, liquid petroleum gas, or compressed natural gas; and recreational vehicles using gasoline, liquid petroleum gas, and compressed natural gas.

Transportation and mobile equipment

Rail transportation

Freight and passenger trains, including yard switching activities.

Transportation and mobile equipment

Tire wear and brake lining

Tire and brake lining wear from all categories of road transportation.

Agriculture

Animal production

Animal housing, manure storage, and application of manure to the field

Agriculture

Crop production

Application of synthetic nitrogen fertilizers, tillage, and crop harvesting.

Agriculture

Fuel use

Stationary combustion sources in agricultural facilities such as space and water heating and crop drying.

Commercial/residential/institutional

Cigarette smoking

Mainstream cigarette smoke, which is directly exhaled by the smoker and sidestream smoke, which is directly released from burning cigarettes.

Commercial/residential/institutional

Commercial and institutional fuel combustion

External combustion sources used for space/water heating in commercial establishments, health and educational institutions and government/public administration facilities.

Commercial/residential/institutional

Commercial cooking

Cooking meat and french fries in commerical foodservice operations.

Commercial/residential/institutional

Construction fuel combustion

Combustion of fossil fuels used for space heating and the heating of construction materials, such as concrete.

Commercial/residential/institutional

Home firewood burning

Burning of fuel wood and pellets for space heating and hot water. Includes emissions from fireplaces, wood stoves and wood-fired boilers.

Commercial/residential/institutional

Human

Human respiration, perspiration and dental amalgams.

Commercial/residential/institutional

Marine cargo handling

Handling, loading and unloading of materials, goods and merchandise from ships to docks.

Commercial/residential/institutional

Residential fuel combustion

Combustion of fossil fuels used for space/water heating in residences.

Commercial/residential/institutional

Service stations

Fuel transfers and storage at service stations, as well as individuals refueling vehicles and off-road equipment.

Commercial/residential/institutional

Other miscellaneous sources

Infant-diapered waste and facility-reported data from sectors that are not included elsewhere.

Incineration and waste

Crematoriums

Combustion of caskets and human bodies, as well as companion animals.

Incineration and waste

Waste incineration

Incinerators used to combust municipal solid waste and recover energy.

Incineration and waste

Waste treatment and diposal

Disposal sites used for a variety of wastes, such as domestic, commercial, hazardous, liquid and non-hazardous solid industrial wastes as well as sewage sludge and from on-site burning of residential waste materials in backyard barrels or open-pit burning.

Paints and solvents

Dry cleaning

Dry cleaning of fabric and leather items.

Paints and solvents

General solvent use

Broad range of applications occurring in residential, commercial, industrial and institutional locations. Industrial applications include uses such as: degreasing, adhesives and sealants, aerosols, blowing agents, and resin manufacturing. The use of consumer and commercial products, pesticides and personal care products are also included.

Paints and solvents

Printing

Manufacturing or use of printing inks, which includes: flexographic, gravure, letterpress, lithographic and other printing.

Paints and solvents

Surface coatings

Broad range of applications and industries, including individuals and companies engaged in the manufacturing or use of paints and coatings.

Dust

Coal transportation

Transportation of coal by train or truck.

Dust

Construction operations

Soil disturbance on construction sites (residential, industrial-commercial-institutional (ICI), engineering).

Dust

Mine tailings

Wind erosion at mine tailings ponds located on active and inactive mine sites.

Dust

Paved roads

Re-suspension of particulate matter by vehicles travelling on paved roads.

Dust

Unpaved roads

Re-suspension of particulate matter by vehicles travelling on unpaved roads.

Fires

Prescribed forest burning

Controlled fires used for land management treatments such as reducing logging residues, managing forest production, controlling insects, and minimizing the potential for destructive wildfires. Excludes the burning of agricultural residues.

Fires

Structural fires

Vehicle fires (including trains and airplanes) and fires that burn buildings.

1.2 Reporting requirements

The Convention on Long-range Transboundary Air Pollution (CLRTAP) endeavours to limit and, as far as possible, gradually reduce and prevent air pollution. Since 1979 when it was originally signed, the Convention has been extended by eight protocols, seven of which identify measures to be taken by Parties to achieve the Convention’s objectives; the eighth protocol concerns financing. Canada has ratified five of the protocols under the Convention that have come into force including:

These protocols set specific emissions reduction targets for sulphur, NOx, Cd, Pb, Hg, dioxins and furans, PAHs, and HCB. Parties are required to report emissions to the United Nations Economic Commission for Europe (UNECE) each year by February 15.

In addition, Canada collects and publishes data on emissions of NH3, CO, VOCs and three categories of PM (TPM, PM10 and PM2.5) and voluntarily reports the emissions of these six substances, along with the eleven substances for which there are protocols, to the UNECE annually. Canada has ratified the 1984 Geneva Protocol on Long-term Financing of the Cooperative Programme for Monitoring and Evaluation of the Long-range Transmission of Air Pollutants in Europe.

Canada and the United States work jointly to address shared concerns regarding transboundary air pollution. Under the Canada–U.S. Air Quality Agreement, Canada monitors and reports emissions of SO2, NOx and VOCs other than methane.

1.3 Environmental regulations for air pollutants

To improve and maintain air quality in Canada, a wide range of regulations restrict or eliminate atmospheric pollutants. Regulations under the Canadian Environmental Protection Act, 1999 (CEPA) related to the 17 APEI pollutants include, but are not limited to the following:

All regulations administered under CEPA are available in its registry.

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