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EPA/OAR RIN: 2060-AV59 Publication ID: Fall 2023 
Title: National Emission Standards for Hazardous Air Pollutants: Lime Manufacturing Plants; Amendments  

This action will amend the Lime Manufacturing National Emission Standards for Hazardous Air Pollutants (NESHAP), 40 CFR part 63, subpart AAAAA, as required by the Clean Air Act (CAA). This action will address Louisiana Environmental Action Network v. EPA, 955 F.3d 1088 (D.C. Cir. 2020) (“LEAN”), in which the court held that EPA must set limits on uncontrolled hazardous air pollutant (HAP) emissions when the Agency conducts technology reviews under CAA section 112(d)(6), 42 U.S.C. section 7412(d)(6). The Lime Manufacturing NESHAP was promulgated pursuant to section 112(d) of the CAA on January 5, 2004. The residual risk and technology review (RTR) was promulgated pursuant to CAA 112(f) and 112(d)(6) on July 24, 2020. The NESHAP establishes emission limitations based on maximum achievable control technology for control of HAP from kilns at new and existing lime manufacturing plants. The HAP emitted from lime manufacturing kilns include hydrochloric acid (HCl), mercury, hydrocarbons (emission limit expressed as total hydrocarbons, or THC), and dioxins/furans. On July 21, 2023, the U.S. District Court for the District of Columbia extended the deadline for EPA to complete final action on the Lime NESHAP to June 30, 2024. Minute Order filed July 21, 2023. Blue Ridge Environmental Defense League v. Regan, (D.D.C. No. 1:16-cv-00364-CRC).

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 63, subpart AAAAA     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: 42 U.S.C. 7401 et seq. Clean Air Act    42 U.S.C. 7414, 7601   
Legal Deadline:
Action Source Description Date
Final  Judicial    06/30/2024 
Action Date FR Cite
NPRM  01/05/2023  88 FR 805   
NPRM Comment Period End  02/21/2023 
Supplemental NPRM  01/00/2024 
Final Rule  07/00/2024 
Additional Information: EPA-HQ-OAR-2017-0015.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 32741 Lime Manufacturing; 327410 Lime Manufacturing; 33111 Iron and Steel Mills and Ferroalloy Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Brian Storey
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code D243-04,
Research Triangle Park, NC 27711
Phone:919 541-1103
Fax:919 541-4991

Keith Barnett
Environmental Protection Agency
Office of Air and Radiation
Research Triangle Park, NC 27711
Phone:919 541-5605
Fax:919 541-4991