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EPA/AR RIN: 2060-AQ90 Publication ID: Spring 2015 
Title: NESHAP Risk and Technology Review for the Mineral Wool and Wool Fiberglass Industries; NESHAP for Wool Fiberglass Area Sources 

The Maximum Achievable Control Technology (MACT) standard for Mineral Wool Production was promulgated on June 1, 1999, and the MACT for Wool Fiberglass Production was promulgated on June 14, 1999. The Clean Air Act requires EPA to evaluate the risk remaining to human health within eight years of promulgation of each MACT standard; for these regulations, that date expired in June 2007. Along with risk, the EPA is also required to review new technology in the industry that can reduce hazardous air pollutant (HAP) emissions from regulated sources in the industry, and may consider costs under this technology review. EPA is addressing these Clean Air Act requirements under a combined risk and technology review (RTR). EPA was petitioned to review the risk for these source categories, and also to determine MACT floors for pollutants and processes that were not regulated by the MACT standards. The Court entered into an agreement with EPA and the litigants; the resulting deadline for proposal was November 4, 2011. The supplemental proposal was published in the Federal Register on April 15, 2013 (78 FR 22370). A second supplemental proposal was signed by the Administrator on October 15, 2014, and published in the Federal Register on November 13, 2014; and the promulgation of the two RTRs and a final rule for wool fiberglass area sources is scheduled for June 18, 2015.

Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 63 1175-1196    40 CFR 63 1380-1399   
Legal Authority: 42 U.S.C. 7401   
Legal Deadline:
Action Source Description Date
Final  Judicial  09-cv-00152-SBA; USDC Northern District of California, filed 06/24/14.  06/18/2015 
Action Date FR Cite
NPRM  11/25/2011  76 FR 72770   
Notice  12/20/2011  76 FR 78872   
Notice  01/23/2012  77 FR 3223   
Supplemental NPRM  04/15/2013  78 FR 22369   
Supplemental NPRM  11/13/2014  79 FR 68011   
Supplemental NPRM  12/10/2014  79 FR 73273   
Final Rule  07/00/2015 
Additional Information: Docket #:EPA-HQ-OAR-2010-1041, EPA-HQ-OAR-2010-1042
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:  
Sectors Affected: 327993 Mineral Wool Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Susan Fairchild
Environmental Protection Agency
Air and Radiation
109 T.W. Alexander Drive, Mail Code D-243-04,
Research Triangle Park, NC 27711
Phone:919 541-5167

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