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EPA/OAR RIN: 2060-AO18 Publication ID: Fall 2023 
Title: New Source Performance Standards (NSPS) and Emission Guidelines (EG) for Large Municipal Waste Combustors (MWCs) 

This action addresses the Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources for Large Municipal Waste Combustors promulgated under section 129 of the Clean Air Act (CAA). The New Source Performance Standards (NSPS), subpart Eb, and the Emission Guidelines, subpart Cb, were first established on December 19, 1995, and amended on May 10, 2006, pursuant to CAA section 129(a)(5) which requires review of these standards every 5 years. The NSPS and emission guidelines established emission limitations based on maximum achievable control technology (MACT) for controlling emissions of hazardous air pollutants and criteria pollutants from large municipal waste combustors. The EPA received a petition for reconsideration of the 2006 rulemaking and, in 2007, EPA announced its reconsideration of several aspects of the rule. Additionally, following a challenge to the 2006 rulemaking, the D.C. Circuit granted EPA a voluntary remand in 2008 for the Agency to re-evaluate the MACT floors established in 1995 based on the D.C. Circuit’s decisions in Northeast Maryland Waste Disposal Facility v. EPA, 358 F.3d 936 (D.C. Cir. 2004) and related cases. This action will respond to the voluntary remand and review of the NSPS and Emission Guidelines pursuant to CAA section 129.

Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 60   
Legal Authority: 42 U.S.C. 7401 et seq. Clean Air Act   
Legal Deadline:  None
Action Date FR Cite
Notice  03/20/2007  72 FR 13016   
NPRM  12/00/2023 
Additional Information: Notice of reconsideration of final rule -
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Local, State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 562213 Solid Waste Combustors and Incinerators; 924110 Administration of Air and Water Resource and Solid Waste Management Programs 
RIN Data Printed in the FR: No 
Agency Contact:
Charlene Spells
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code E-143-05,
Research Triangle Park, NC 27711
Phone:919 541-5255
Fax:919 541-3470

Steve Fruh
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code E143-01,
Research Triangle Park, NC 27711, NC 27711
Phone:919 541-2837