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EPA/AR RIN: 2060-AP63 Publication ID: Fall 2009 
Title: ●Emissions Factors Program Improvements 
Abstract: EPA intends to implement a multi-part process to improve the air pollutant emissions factors program. Emissions factors, based on averaged data from industrial process performance tests, were established to fill emissions data gaps when developing emissions inventories. Most EPA emissions factors reside in a database called AP-42. We believe that implementing this multi-part effort will result in a self-sustaining emissions factors program receiving ongoing data submittals that will greatly improve emissions estimation for regulatory authorities and others to use in: (1) Developing emissions inventories, (2) updating emissions standards, (3) identifying and evaluating control strategies, (4) determining applicability of permit and regulatory requirements, (5) assessing risks, and (6) other air pollution control activities. The first part involves further development of the existing electronic reporting tool (ERT) to make it easier for State, local, and tribal air pollution control agencies, industry, and other stakeholders to access, assess the quality of, and submit emissions test data. The second part involves upgrading the AP-42 factors information compilation and retrieval system, making it an interactive, current, and easy to expand and enhance foundation for the Internet application renamed WebFIRE. Additionally, to make the emissions factors development process more transparent, EPA plans to rewrite the existing emissions factors development procedures document. Finally, in order to acquire adequate data for the development or improvement of the emissions factors, we are seeking comment on requiring the submission (via electronic reporting) of certain performance testing information already collected by industry. Performance tests are conducted to measure the air pollutant emissions from an industrial process and used as an indicator of compliance with regulations. This last element of the process of improving the emissions factors program will require formal rulemaking and will encompass performance testing required by Federal rules codified in 40 CFR parts 60, 61, and 63. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Prerule Stage 
Major: No  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 60, 61, and 63     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: Not Yet Determined   
Legal Deadline:  None
Timetable:
Action Date FR Cite
ANPRM  12/00/2009    
NPRM  08/00/2010    
Additional Information: SAN No. 5357
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Undetermined 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Tom Driscoll
Environmental Protection Agency
Air and Radiation
D243-05,
RTP, NC 27711
Phone:919 541-5135
Fax:919 541-4028
Email: Driscoll.Tom@epamail.epa.gov

Bob Schell
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-05,
Research Triangle Park, NC 27711
Phone:919 541-4116
Fax:919 541-3207
Email: schell.bob@epa.gov