Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines; Reopening of Comment Period

ENVIRONMENTAL PROTECTION AGENCY <CFR>40 CFR Part 60</CFR> <DEPDOC>[EPA-HQ-OAR-2024-0419; FRL-11542-03-OAR]</DEPDOC> <RIN>RIN 2060-AW21</RIN> <SUBJECT>Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines; Reopening of Comment Period</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Environmental Protection Agency (EPA). <HD SOURCE="HED">ACTION:</HD> Proposed rule; reopening of public comment period. <SUM> <HD SOURCE="HED">SUMMARY:</HD> On December 13, 2024, the U.S. Environmental Protection Agency (EPA) proposed amendments to the new source performance standards (NSPS) for new, modified, and reconstructed stationary combustion turbines and stationary gas turbines. The EPA is reopening the public comment period for this proposed rule to allow additional time for stakeholders to review and comment on the proposal. The initial 90-day public comment period, which ended March 13, 2025, is being reopened for an additional 21 days, from March 25, 2025 to April 15, 2025. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> The comment period for the proposed rule published on December 13, 2024, at 89 FR 101306, is reopened. Comments must be received on or before April 15, 2025. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> You may send comments, identified by Docket ID No. EPA-HQ-OAR-2024-0419, by any of the following methods: • <E T="03">Federal eRulemaking Portal: https://www.regulations.gov</E> (our preferred method). Follow the online instructions for submitting comments. • <E T="03">Email: a-and-r-docket@epa.gov.</E> Include Docket ID No. EPA-HQ-OAR-2024-0419 in the subject line of the message. • <E T="03">Fax:</E> (202) 566-9744. Attention Docket ID No. EPA-HQ-OAR-2024-0419. • <E T="03">Mail:</E> U.S. Environmental Protection Agency, EPA Docket Center, Docket ID No. EPA-HQ-OAR-2024-0419, Mail Code 28221T, 1200 Pennsylvania Avenue NW, Washington, DC 20460. • <E T="03">Hand/Courier Delivery:</E> EPA Docket Center, WJC West Building, Room 3334, 1301 Constitution Avenue NW, Washington, DC 20004. The Docket Center's hours of operation are 8:30 a.m.-4:30 p.m., Monday-Friday (except Federal Holidays). <E T="03">Instructions:</E> All submissions received must include the Docket ID No. for this rulemaking. Comments received may be posted without change to <E T="03">https://www.regulations.gov,</E> including any personal information provided. For detailed instructions on sending comments and additional information on the rulemaking process, see the <E T="02">SUPPLEMENTARY INFORMATION</E> section below. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> John Ashley, Sector Policies and Programs Division (D243-02), Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, 109 T.W. Alexander Drive P.O. Box 12055 RTP, North Carolina 27711; telephone number: (919) 541-1458; and email address: <E T="03">ashley.john@epa.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <E T="03">Rationale.</E> On December 13, 2024, pursuant to its statutory duty to review and, if appropriate, revise NSPS under section 111(b)(1)(B) of the Clean Air Act, the EPA proposed to strengthen the limits for emissions of nitrogen oxides (NO <E T="52">X</E> ) from most new, modified, and reconstructed stationary combustion turbines under new subpart KKKKa of 40 CFR part 60. In addition, the EPA proposed amendments to address specific technical and editorial issues in the current regulations for new, modified, and reconstructed stationary combustion turbines and stationary gas turbines under 40 CFR part 60, subparts KKKK and GG. The EPA received multiple requests for an extension of the initial 90-day comment period to allow stakeholders additional time to review and comment on the proposed rule. This initial comment period ended March 13, 2025. The EPA has decided to reopen the comment period for 21 days. The public comment period will now end on April 15, 2025. <E T="03">Docket.</E> The EPA has established a docket for this rulemaking under Docket ID No. EPA-HQ-OAR-2024-0419. All documents in the docket are listed in <E T="03">https://www.regulations.gov.</E> Although listed in the index, some information is not publicly available, <E T="03">e.g.,</E> Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only as pdf versions that can only be accessed on the EPA computers in the docket office reading room. Certain databases and physical items cannot be downloaded from the docket but may be requested by contacting the docket office at (202) 566-1744. The docket office has up to 10 business days to respond to these requests. Except for such material, publicly available docket materials are available electronically in <E T="03">Regulations.gov.</E> <E T="03">Instructions.</E> Direct your comments to Docket ID No. EPA-HQ-OAR-2024-0419. The EPA's policy is that all comments received will be included in the public docket without change and may be made available online at <E T="03">https://www.regulations.gov,</E> including any personal information provided, unless the comment includes information claimed to be CBI or other information whose disclosure is restricted by statute. Do not submit electronically to <E T="03">https://www.regulations.gov</E> any information that you consider to be CBI or other information whose disclosure is restricted by statute. This type of information should be submitted as discussed below. The EPA may publish any comment received to its public docket. Multimedia submissions (audio, video, etc.) must be accompanied by a written comment. The written comment is considered the official comment and should include discussion of all points you wish to make. The EPA will generally not consider comments or comment contents located outside of the primary submission ( <E T="03">i.e.,</E> on the web, cloud, or other file sharing system). For additional submission methods, the full EPA public comment policy, information about CBI or multimedia submissions, and general guidance on making effective comments, please visit <E T="03">https://www.epa.gov/dockets/commenting-epa-dockets.</E> The <E T="03">https://www.regulations.gov</E> website allows you to submit your comment anonymously, which means the EPA will not know your identity or contact information unless you provide it in the body of your comment. If you send an email comment directly to the EPA without going through <E T="03">https://www.regulations.gov,</E> your email address will be automatically captured and included as part of the comment that is placed in the public docket and made available on the internet. If you submit an electronic comment, the EPA recommends that you include your name and other contact information in the body of your comment and with any digital storage media you submit. If the EPA cannot read your comment due to technical difficulties and cannot contact you for clarification, the EPA may not be able to consider your comment. Electronic files should not include special characters or any form of encryption and be free of any defects or viruses. For additional information about the EPA's public docket, visit the EPA Docket Center homepage at <E T="03">https://www.epa.gov/dockets.</E> <E T="03">Submitting CBI.</E> Do not submit information containing CBI to the EPA through <E T="03">https://www.regulations.gov.</E> Clearly mark the part or all the information that you claim to be CBI. For CBI information on any digital storage media that you mail to the EPA, note the docket ID, mark the outside of the digital storage media as CBI, and identify electronically within the digital storage media the specific information that is claimed as CBI. In addition to one complete version of the comments that includes information claimed as CBI, you must submit a copy of the comments that does not contain the information claimed as CBI directly to the public docket through the procedures outlined in <E T="03">Instructions</E> above. If you submit any digital storage media that does not contain CBI, mark the outside of the digital storage media clearly that it does not contain CBI and note the docket ID. Information not marked as CBI will be included in the public docket and the EPA's electronic public docket without prior notice. Information marked as CBI will not be disclosed except in accordance with procedures set forth in 40 Code of Federal Regulations (CFR) part 2. Our preferred method to receive CBI is for it to be transmitted electronically using email attachments, File Transfer Protocol (FTP), or other online file sharing services ( <E T="03">e.g.,</E> Dropbox, OneDrive, Google Drive). Electronic submissions must be transmitted directly to the OAQPS CBI Office at the email address <E T="03">oaqpscbi@epa.gov</E> and, as described above, should include clear CBI markings and note the docket ID. If assistance is needed with submitting large electronic files that exceed the file size limit for email attachments, and if you do not have your own file sharing service, please email <E T="03">oaqpscbi@epa.gov</E> to request a file transfer link. If sending CBI information through the postal service, please send it to the following address: U.S. EPA, Attn: OAQPS Document Control Officer, Mail Drop: C404-02, 109 T.W. Alexander Drive, P.O. Box 12055, Research Triangle Park, North Carolina 27711, Attention Docket ID No. EPA-HQ-OAR-2024-0419. The mailed CBI material should be double wrapped and clearly marked. Any CBI markings should not show through the outer envelope. <SIG> <NAME>Penny Lassiter,</NAME> Director, Sector Policies and ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 10k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━