Emission Inventory Data Management, Report Example

Estimated Criteria Pollutant Emissions from Wood-Burning Stoves and Fireplaces

(WHAT)

Emissions of NOx, SOx, PM-10, CO, and VOCs from wood-burning stoves and fireplaces were estimated for the {Tribes Name} reservation. Wood burning serves as a supplement to natural gas and propane usage on the reservation.

(HOW)

The emission estimates for these pollutants were made using the procedures and the preferred method described in the Emission Inventory Improvement Program (EIIP), Volume III, Chapter 2, titled Residential Wood Combustion, revised final January 2001. The formula used for the calculation of these estimates is included in Appendix A of this report.

(WHERE, WHEN and FROM WHO YOU GOT THE DATA)

(Actual number surveyed) residences on the {Tribes Name} reservation were surveyed in (month and year). A copy of the survey form used and a summary of the data collected are included in Appendix X of this report. Completed survey forms are on file at the{Tribes Name} EPA office. Through the survey it was estimated that (number) cords of wood are burned in fireplaces each year, and that (number) cords of wood are burned in conventional residential woodstoves each year. Most reservation homes use wood-burning for heat between the months of November and April.

The number of cords of wood burned was multiplied by 79 to obtain how many cubic feet of wood were burned. This is the conversion factor suggested in the EIIP chapter referenced above. Most homes burn wood from the surrounding pinon-juniper woodlands, so the wood density conversion factor for Rocky Mountain hardwoods given in the EIIP Volume III, Chapter 2, Residential Wood Combustion, table 2.4-4 was used to convert cubic feet of wood to tons of wood. In this way, it was calculated that (number) tons of wood are burned in fireplaces each year and (number) tons of wood are burned in conventional residential woodstoves each year.

Emission factors for residential fireplaces and conventional residential woodstoves were obtained from the EIIP chapter referenced above, table 2.4-1 and are listed in Appendix A. The emissions results obtained:

Pollutant / Emissions from
Residential Fireplaces, tons/year / Emissions from Conventional Residential Woodstoves, tons/year / Total emissions
from residential Wood burning
Tons/year
Nox / (number) / (number) / (number)
Sox / (number) / (number) / (number)
PM-10 / (number) / (number) / (number)
VOC / (number) / (number) / (number)
CO / (number) / (number) / (number)

Appendix A

Emission Rate calculation for residential wood burning from EIIP Volume III, Chapter 2, titled Residential Wood Combustion, revised final January 2001.

Equation 1 (converts cords of wood to tons of wood)

W = Wc*(79ft3/cord of wood)*(24 pounds/ ft3 of wood)* (1 ton/2000 pounds)

W = tons of wood burned annually on reservation

Wc = Cords of wood burned on reservation, obtained from survey

79ft3/cord of wood = conversion from cords of wood to ft3 of wood, obtained from EIIP Volume III, Chapter 2, titled Residential Wood Combustion, revised final January 2001

24 pounds/ ft3 of wood = conversion from ft3 of wood to pounds of wood for Rocky Mountain hardwoods, obtained from EIIP Volume III, Chapter 2, Residential Wood Combustion, table 2.4-4.

1 ton/2000 pounds = conversion factor from pounds to tons

Equation 2 (calculates emission rate estimate)

E = EF* W

E = emission rate

EF = emission factors from table 2.4-1 in EIIP Volume III, Chapter 2, Residential Wood Combustion

W = tons of wood burned annually on reservation

Emission Factors used in this EI

Process / PM-10* / NOx* / CO* / VOC* / Sox*
Conventional Residential Woodstoves / 30.6 / 2.8 / 230.8 / 53.0 / 0.4
Residential Fireplaces / 34.6 / 2.6 / 252.6 / 229.0 / 0.4

*emission factor units are pounds pollutant/tons of wood burned