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

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

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

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

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

Point Sources

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

Non-Point Sources

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

Non-point Sources

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

On-Road Mobile Sources

Non-Road Mobile Sources

Source Categories BIOGENIC or NATURAL SOURCES Vegetation Animals Biomass decay Volcanoes

Biogenic Sources

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

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

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

What Air Pollution Sources Are In Your Village?

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

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

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

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

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

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

What Air Pollution Sources Are In Your Village?