2. Presentation Overview Alaska air pollution Pollutants Sources What is an emissions inventory?

3. Air Pollutants The “criteria” air pollutants Two forms of particulate matter – burning and dust Carbon monoxide – burning fuel Lead – leaded gasoline Nitrogen dioxide - burning Ozone – burning and chemical reactions Sulfur dioxide - burning

4. Air Pollutants Hazardous Air Pollutants 188 defined by EPA Broad range of compounds, including Benzene Formaldehyde Arsenic Mercury Dioxin Ethylene glycol Asbestos

5. Air Pollution Source Categories Point or Stationary Non-Point or Area Mobile On-road Non-road Biogenic

6. Source Categories POINT OR STATIONARY SOURCES Power plants Mines Oil & gas production facilities Lumber mills Seafood processors Industrial facilities Tank farms

7. Point Sources

8. Source Categories NON-POINT OR AREA SOURCES Small point sources Wood burning Space heating Fires Windblown dust Road dust

9. Non-Point Sources

11. Alaska Fire – July 2004 Non-Point Sources Anchorage, July 12 Anchorage, July 13

12. Non-point Sources

13. Emission Inventory Source Categories MOBILE SOURCES On-road cars, trucks, buses, motorcycles Non-road marine vessels, railroad, off- road vehicles, heavy equipment, lawn/garden equipment

14. On-Road Mobile Sources

15. Non-Road Mobile Sources

19. Source Categories BIOGENIC or NATURAL SOURCES Vegetation Animals Biomass decay Volcanoes

20. Biogenic Sources

21. What is an Emissions Inventory A full list, by source, of air pollutant emissions for a specific place and time

22. Uses for Emissions Inventory Data Identify important sources and impacts of air pollution Collect baseline data Look at trends in pollution Look at how air control programs impact emissions Air quality planning Predict changes in air quality Look at local and regional sources of air pollution

23. Uses for Emissions Inventory Data (cont.) Air quality management tool Air quality modeling & impact assessments Allows local data to be considered in larger scale analyses related to regulations development

24. What Air Pollution Sources Are In Your Village?

25. Common Air Pollution Sources and Pollutants They Emit Carbon monoxide Nitrogen oxide Hydrocarbons Particulate matter Ammonia Hazardous Air Pollutants – benzene, toluene, ethylbenzene, xylenes Cars and Trucks

26. Common Air Pollution Sources and Pollutants They Emit Carbon monoxide Hydrocarbons Nitrogen oxides Particulate matter Hazardous Air Pollutants Greenhouse gases Boat Engines

27. Common Air Pollution Sources and Pollutants They Emit Carbon monoxide Hydrocarbons Nitrogen oxides Particulate matter Hazardous Air Pollutants Greenhouse gases 4-Wheelers and Snow Machines

28. Common Air Pollution Sources and Pollutants They Emit Particulate matter Carbon monoxide Volatile Organic Compounds Nitrogen oxides Sulfur oxides Hazardous Air Pollutants – benzene, polycyclic aromatic hydrocarbons, & others Woodstoves and Fireplaces

29. Common Air Pollution Sources and Pollutants They Emit Nitrogen oxides Carbon monoxide Sulfur oxides Particulate matter Carbon dioxide Organic compounds Aldehydes Polycyclic aromatic hydrocarbons Hazardous Air Pollutants Village Power Plants

30. Common Air Pollution Sources and Pollutants They Emit Particulate matter Carbon monoxide Sulfur oxides Nitrogen oxides Volatile Organic Compounds Hazardous Air Pollutants Open Burning of Trash

31. What Air Pollution Sources Are In Your Village?