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Procedures for the Development of Emissions Factors from Stationary Sources
Guidance on the Recommended Procedures for Development of Emissions Factors and Use of the WebFIRE Emissions Factor Database - Review Draft. December 2010 (PDF 5M)
January 24, 2011 - Comment period extended.
Comments on the proposed procedures are now due March 17, 2011. Please submit comments and questions in writing to the Info CHIEF Help Desk at info.chief@epa.gov. Please write Procedures in the subject line.
This guidance document describes the procedures, data evaluation criteria, and associated tools and data management systems that the U.S. Environmental Protection Agency (EPA) recommends for developing air pollutant emissions factors for stationary emissions units or processes. When finalized it will supersede the previous EPA guidance document for emissions factor development (Procedures for Preparing Emission Factor Documents (EPA-454/R-95-015, November 1997))
The report presents an introduction to emissions factors and provides the historical background for how and why the EPA has developed recommended emissions factors for stationary emissions units or processes. It also describes the approach and new procedures that EPA will follow when developing new or revising existing recommended emissions factors.
Included is an overview of EPA’s interactive emissions factors database, WebFIRE, and a discussion of the role the Electronic Reporting Tool (ERT) plays in submitting emissions test data to EPA. Finally, this document provides an overview of the data review and public participation process that the EPA should follow when developing new or revised recommended emissions factors.
1997 Procedures and Addendum
Procedures for Preparing Emission Factor Documents EPA-454/R-95-015, Revised -- Describes procedures for developing and reporting emission factors in EPA publications. November 1997 (PDF 477K)
Addendum to Procedures for Preparing Emission Factor Documents. August 2008 (PDF 21K)
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