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Fuels For Schools General Air Quality Considerations

Fuels For Schools General Air Quality Considerations. Diane R. Lorenzen, P.E. Montana Department of Environmental Quality October 17, 2007. Air Quality Topics. Emissions Estimates Criteria Air Pollutants Hazardous Air Pollutants (HAPS) Is an Air Quality Permit Required?

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Fuels For Schools General Air Quality Considerations

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  1. Fuels For SchoolsGeneral Air Quality Considerations Diane R. Lorenzen, P.E. Montana Department of Environmental Quality October 17, 2007

  2. Air Quality Topics • Emissions Estimates • Criteria Air Pollutants • Hazardous Air Pollutants (HAPS) • Is an Air Quality Permit Required? • Ambient Air Impacts • Non-attainment Areas

  3. Criteria Air PollutantsRegulated by Air Quality Standards • Carbon Monoxide (CO) • Nitrogen Dioxide (NO2) • Sulfur Dioxide (SO2) • Particulate Matter < 10 µm (PM10) • Particulate Matter < 2.5 µm (PM2.5) • Ozone, regulated as Volatile Organic Compounds (VOC) • Lead (Pb) [also a HAP]

  4. Criteria Pollutant Emissions ComparisonPotential to Emit (PTE) Tons of pollutant per year (tpy)19 MMBtu/hr boiler (heat input)

  5. Example HAP Emissions2 MMBtu/hr Wood-fired Boiler

  6. PM10 Emissions Comparison

  7. Boiler Stack and Buildings

  8. Building Downwash

  9. Ambient Air Quality Boundary Industrial Facility School Yard

  10. Stack Height Considerations • Minimize building downwash effect • Good Engineering Practice Stack Height (GEP) > 2.5 times adjacent building height

  11. Sample Boiler Modeling Results

  12. Non-Attainment Areas Wood Smoke is a primary contributor to PM2.5 impacts in Montana’s mountain valleys.

  13. Locating a Project in a Non-attainment Area • Contact state and local regulatory authorities at the beginning of planning • Consider the effects of NAA restrictions on boiler operation and project economics

  14. Source: http://www.fuelsforschools.org

  15. Open Burning vs. Fuel Boiler Source: http://www.fuelsforschools.org

  16. Carbon Dioxide Source: http://www.fuelsforschools.org

  17. Burning Seasons in Montana Heating Season Open Burning Prohibited General Open Burning Fall Regulated Burning Fire Season JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

  18. Montana DEQ Air Quality Contacts • Air permitting, emissions estimation and stack height: Deb Skibicki (406) 444-1472 • Non-attainment Area information: Bob Habeck (406) 444-7305

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