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EPA/AR RIN: 2060-AO15 Publication ID: Spring 2010 
Title: NESHAP: Portland Cement Notice of Reconsideration 
Abstract: On December 20, 2006, EPA published final amendments to the Portland cement air emissions rule that regulates emissions of toxic air pollutants. This rule covers all facilities that produce Portland cement from raw materials such as limestone. The amendments were in response to a remand by the D.C. Circuit Court of portions of the final rule published in 1999. At the same time as the final amendments were published, EPA also published a notice of reconsideration of the final new source limits for mercury and total hydrocarbons (a surrogate for non-dioxin organic toxic air pollutants), and a reconsideration of the ban on the use of certain mercury containing fly ash in both new and existing cement kilns. The Agency took this action because there were still substantive technical issues and there was not sufficient opportunity for public comment on parts of the final action. Since announcing our intent to reconsider the December 2006 rule, EPA also granted a petition to reconsider the existing source emissions limits for mercury and THC, and also our decision not to regulate hydrochloric acid emissions. As part of this reconsideration, EPA has conducted extensive data gathering and analysis, including requirements for emissions testing. Based on our evaluation of the gathered data, on May 6, 2009, EPA proposed numerical emissions limits for mercury, total hydrocarbons, and hydrochloric acid for both new and existing cement kilns In addition, we significantly lowered the cement kiln new and existing source particulate matter standards. 
Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 40 CFR 63.1340 to 63.1359   
Legal Authority: 42 USC 7412   
Legal Deadline:
Action Source Description Date
NPRM  Judicial    04/21/2009 
Final  Judicial    06/06/2010 
Timetable:
Action Date FR Cite
NPRM  05/06/2009  74 FR 21135   
Notice of Public Hearings and Extension of Public Comment Period  06/09/2009  74 FR 27265   
NPRM Comment Period End  07/06/2009    
NPRM Comment Period Extended To  09/04/2009    
Final Action  06/00/2010    
Additional Information: SAN No. 4585.1; EPA publication information: NPRM - http://edocket.access.gpo.gov/2009/pdf/E9-10206.pdf; Split from RIN 2060-AJ78; EPA Docket information: EPA-HQ-OAR-2002-0051.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Local, State, Tribal 
Small Entities Affected: Businesses  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Jennifer Caparoso
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code E143-01,
Research Triangle Park, NC 27711
Phone:919 541-4063
Fax:919 541-0516
Email: caparoso.jennifer@epa.gov

Nick Hutson
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-01,
Research Triangle Park, NC 27711
Phone:919 541-2968
Fax:919 541-4991
Email: hutson.nick@epa.gov