Smoke Management Program - Emission Factors

This page last reviewed August 18, 2008

Smoke Management Program

Emission Factors


Emission Factor Tables and Sites

Emission factors for combustion of various vegetation fuel types have been developed by the U.S. Forest Service and approved for use by the U.S. EPA and California Air Resources Board for purposes of smoke management emissions forecasting. They are published in the "Air Quality Conformity Handbook -- A Handbook for Land Managers," USDA -- Forest Service, Air Resources / Fire Management, Pacific Southwest Region (November, 1995).

The factors take into consideration vegetation type, fuel loading, and percent combustion. Three tables of factors for different fuel types are available, one in MS Word 97 format for pile burns (Pile Burn - 21 K), and two in Excel Spreadsheet format: USDA Table 7 - 16 K, and USDA Table 8 - 16 K

Updated emission factors and emission factors for additional fuel types are under development. They will be posted on this web page as they become available.

For more information on development of technical tools for smoke management contact ARB staff member Jill Glass at (916) 322-6161.

PM-10 Emissions Calculations
for Different Pile Sizes
(Pile Burn - 21K)

Fuel Loading, Percent Combustion and
Emission Factors by Vegetation-Type
for Wildfire
USDA Table 7 (Excel - 16K)

Fuel Loading, Percent Combustion and
Emission Factors by Vegetation-Type
for Prescribed Burns
USDA Table 8 (Excel - 16K)

Fuel Loading, Percent Combustion and
Emissions Factors by Vegetation-Type
for Agricultural Waste
(PDF - 15K)
(Excel - 35K)

 EPA AP-42 Emission Factors

 ARB Ag Emission Factors Memo
(August 17, 2000)




Technical Tools

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