2026-12481: National Emission Standards for Hazardous Air Pollutants: National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration; Extension of Comment Period
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On April 22, 2026, the U.S. Environmental Protection Agency (EPA) proposed a rule titled "National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration." The EPA is extending the comment period on this proposed rule, which is scheduled to close on June 22, 2026. The comment period will now end on August 6, 2026, to allow additional time for stakeholders to review and comment on the proposal.
The agency’s own summary, as published.
The rule, in full
1,354 words as published, June 22, 2026. View the original →
Federal Register, Volume 91 Issue 118 (Monday, June 22, 2026) [Federal Register Volume 91, Number 118 (Monday, June 22, 2026)] [Proposed Rules] [Pages 37065-37066] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2026-12481] ======================================================================= ----------------------------------------------------------------------- ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 63 [EPA-HQ-OAR-2025-1348; FRL-5732-04-OAR] RIN 2060-AS13 National Emission Standards for Hazardous Air Pollutants: National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration; Extension of Comment Period
Agency
Environmental Protection Agency (EPA).
Action
Proposed rule; extension of public comment period. -----------------------------------------------------------------------
Summary
On April 22, 2026, the U.S. Environmental Protection Agency (EPA) proposed a rule titled ``National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration.'' The EPA is extending the comment period on this proposed rule, which is scheduled to close on June 22, 2026. The comment period will now end on August 6, 2026, to allow additional time for stakeholders to review and comment on the proposal.
Dates
The EPA is extending the comment period for the proposed rule that published in the Federal Register (FR) on April 22, 2026, at 91 FR 21672. The EPA must receive written comments on or before August 6, 2026.
Addresses
You may send comments, identified by Docket ID No. EPA-HQ- OAR-2025-1348, by any of the following methods: Federal eRulemaking Portal: https://www.regulations.gov (our preferred method). Follow the online instructions for submitting comments. Email: [email protected]. Include Docket ID No. EPA- HQ-OAR-2025-1348 in the subject line of the message. Mail: U.S. Environmental Protection Agency, EPA Docket Center, Docket ID No. EPA-HQ-OAR-2025-1348, Mail Code 28221T, 1200 Pennsylvania Avenue NW, Washington, DC 20460. Fax: (202) 566-9744. Attention Docket ID No. EPA-HQ-OAR- 2025-1348 Mail: U.S. Environmental Protection Agency, 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. to 4:30 p.m., Monday through Friday (except Federal holidays). Instructions: All submissions received must include the Docket ID No. EPA-HQ-OAR-2025-1348 for this rulemaking. Comments received may be posted without change on https://www.regulations.gov, including any personal information provided. For detailed instructions on sending comments and additional information on the rulemaking process, see the SUPPLEMENTARY INFORMATION section of this document.
For Further Information Contact
For information about this comment period extension, contact U.S. EPA, Attn: Matthew Witosky, Mail Drop: D243-04, 109 T.W. Alexander Drive, P.O. Box 12055, Research Triangle Park, North Carolina 27711; telephone number: (919) 541-2865; and email address: [email protected].
Supplementary Information
Rationale. On April 22, 2026, the EPA proposed a rule titled ``National Emission Standards for Hazardous Air Pollutants: National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration.'' \1\ The comment period on this proposed rule was originally scheduled to close on June 22, 2026. The EPA received requests for additional time to review and comment on this proposed rule, and the EPA has decided to extend the comment period until August 6, 2026. The public comment period will now end on August 6, 2026. --------------------------------------------------------------------------- \1\ 91 FR 21672, April 22, 2026. --------------------------------------------------------------------------- Docket. The EPA established a docket for this rulemaking under Docket ID No. EPA-HQ-OAR-2025-1348. All documents in the docket are listed at https://www.regulations.gov. Although listed, some information is not publicly available, e.g., Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. The EPA does not place certain other material, such as copyrighted material, on the internet; this material is publicly available only as portable document format (PDF) versions accessible only on EPA computers in the docket office reading room. The public cannot download certain databases and physical items from the docket but may request these items by contacting the docket office at 202-566- 1744. The docket office has 10 business days to respond to such requests. With the exception of such material, publicly available docket materials are available electronically at https://www.regulations.gov. Written Comments. Direct your comments to Docket ID No. EPA-HQ-OAR- 2025-1348. 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 https://www.regulations.gov, including any personal information provided, unless the comment includes information claimed to be CBI or other information for which a statute restricts disclosure. Do not submit electronically to https://www.regulations.gov any information that you consider to be CBI or other information for which a statute restricts disclosure. You should submit this type of information as discussed below. The EPA may publish any comment received to its public docket. A written comment must accompany multimedia submissions (audio, video, etc.). The EPA considers the written comment to be the official comment, and it should include discussion of all points the commenter wishes to make. The EPA will generally not consider comments or comment contents located outside of the primary submission (i.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 https://www.epa.gov/dockets/commenting-epa-dockets. The https://www.regulations.gov 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 https://www.regulations.gov, 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 [[Page 37066]] 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 should be free of any defects or viruses. For additional information about the EPA's public docket, visit the EPA Docket Center homepage at https://www.epa.gov/dockets. Submitting CBI. Do not submit information containing CBI to the EPA through https://www.regulations.gov/. 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 Instructions 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.g., Dropbox, OneDrive, Google Drive). Electronic submissions must be transmitted directly to the Office of Clean Air Programs (OCAP) at the email address [email protected] 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 contact the person listed in the FOR FURTHER INFORMATION CONTACT section to receive instructions. Panagiotis Tsirigotis, Director, Office of Clean Air Programs. [FR Doc. 2026-12481 Filed 6-18-26; 8:45 am] BILLING CODE 6560-50-P
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
Rulemaking docket
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Panhandle Eastern Pipeline Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Florida Gas Transmission Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Report. Gasoline Distribution Area Source Control Cost Estimates. October 3, 2006
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Supporting & Related Material April 22, 2026Earthjustice Petition. Re: Petition for Reconsideration of Oil and Natural Gas Sector: National Emission Standards for Hazardous Air Pollutants Reviews; Final Rule, 77 Fed. Reg. 49,490 (Aug. 16, 2012), 40 C.F.R. Part 63,...
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Supporting & Related Material April 22, 2026Report. Carbon Limit: Zero emissions technologies for pneumatic controllers in the USA. Applicability and cost effectiveness. August 1, 2016.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Consumers Energy Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Mountain Gathering Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Enable Mississippi River Transmission Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 2026Email Correspondence Between EPA and INGAA, GPA Midstream and API. Follow-Up Inquiry and Request for a Call on Submitted Phase I Information Collection Request Responses Related to Mercury Control at Facilities. May 11-1...
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Supporting & Related Material April 22, 2026Email from INGAA to EPA. Email Transmission of Responses to EPA Questions. June 2, 2025
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Supporting & Related Material April 22, 2026Record of EPA Informational Meeting with Stakeholders (Industry). Discussion of Completed Information Collection Request (ICR). May 1, 2025
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Supporting & Related Material April 22, 2026Memorandum. Impacts of Final MACT Standards for Glycol Dehydration Units – Oil and Natural Gas Production and Natural Gas Transmission and Storage Source Categories. April 17, 2012
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Supporting & Related Material April 22, 2026Report. Oil and Natural Gas Sector: Reconsideration of Certain Provisions of New Source Performance Standards. Response to Public Comments on Proposed Rule (78 FR 22126; Apr. 12, 2013). July 2013
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Oasis Pipeline Phase 2 Information Collection Request Facility Response
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Supporting & Related Material April 22, 2026U.S. Environmental Protection Agency: NESHAP for Oil and Natural Gas Production (40 CFR part 63, subpart HH) (2026 Technology Review and Reconsideration). Proposed Rule Subpart HH Information Collection Request Supportin...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Wexpro Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 2026Appalachia Midstream Services, LLC. Storage Tanks Sample Emission Calculations. WV Facility (Primary Document) and PA Facility (Attachment).
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Supporting & Related Material April 22, 2026Oil and Gas NESHAP Reconsideration/Technology Review NPRM - Subparts HH and HHH Primary and Alternative Proposal Red-Line Strike-Out Documents. April 2026.
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Supporting & Related Material April 22, 2026EPA NESHAP Legacy Docket (A-94-04) 1993 Information Collection Request (ICR) Responses
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Targa Pipeline Midcontinent Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Wexpro Company Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Memorandum. Control Options for Loading Operations at Gasoline Distribution Facilities. October 20, 2021
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Supporting & Related Material April 22, 2026Report. Research and Development: Methane Emissions from the National Gas Industry. Volume 12: Pneumatic Devices. GRI-94/0257.29. EPA-600/R-96-080I. June 1996.
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Supporting & Related Material April 22, 2026SpiralX EPA Presentation. December 2021.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Regency Marcellus Gas Gathering Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Merit Energy Company Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Memorandum. Economic Impact Analysis for National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities. Technology Review a...
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Supporting & Related Material April 22, 2026Cost Indices-Towering Skills. Chemical Engineering Plant Cost Index. 2001-June 2024.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Gulfport Energy Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Consumers Energy Company Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Columbia Gas Transmission Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH XTO Energy Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 2026Email from EPA to Stakeholders (Information Collection Request Respondents). Invitation to Information Collection Request Question and Answer Meeting. August 14, 2024
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Supporting & Related Material April 22, 2026Email from EPA to Stakeholders (ICR Respondents). Email Transmits Agenda from May 1, 2025, Virtual Meeting and Reminder of EPA's Request for Information to be Discussed During May 28, 2025, Call. May 28, 2025
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Supporting & Related Material April 22, 2026Memorandum. Recommendation of MACT Floor Levels for HAP Emission Points at Major Sources in the Oil and Production Source Category. September 23, 1997
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Supporting & Related Material April 22, 2026Report. Control of Volatile Organic Emissions from Bulk Gasoline Plants. EPA-450/2-77-035. (December 1977)
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Supporting & Related Material April 22, 2026U.S. Environmental Protection Agency. AP 42 Compilation of Air Pollutant Emission Factors. Fifth Edition. Section 5.2: Transportation And Marketing of Petroleum Liquids
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Supporting & Related Material April 22, 2026Memorandum. Impacts of Final MACT Standards for Glycol Dehydration Units – Oil and Natural Gas Production and Natural Gas Transmission and Storage Source Categories. April 17, 2012
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Supporting & Related Material April 22, 2026Memorandum. Oil and Natural Gas Production MACT and Natural Gas Transmission and Storage MACT – Technology Review. July 28, 2011
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH ETC Northeast Pipeline Phase 1 Information Collection Request Facility Response
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Supporting & Related Material April 22, 2026Memorandum. Cost Impact Estimates for the Oil and Natural Gas Production and Natural Gas Transmission and Storage National Emission Standards for Hazardous Air Pollutants. July 9, 1996
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Supporting & Related Material April 22, 2026EPA Email Confirmation of Industry (INGAA) Meeting Request. Meeting Summary Attached. April 30, 2025.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Transwestern Pipeline Company Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Email Transmitting API Response to EPA Observations Re: MACT HH ICR Data. June 4, 2025.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Enable Gas Transmission Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH ETC Texas Pipeline Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH DCP Operating Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Proposed Rule April 22, 2026National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration
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Supporting & Related Material April 22, 2026Memorandum. Evaluation of current standards for small glycol dehydrators for limiting HAP emissions. September 5, 2018
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Supporting & Related Material April 22, 2026Memorandum. Documentation for NEI Updates for Oil and Natural Gas Production and Natural Gas Transmission and Storage. March 15, 2011
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Supporting & Related Material April 22, 2026Email from INGAA to EPA. Follow Up Response to an EPA Inquiry Related to Mercury. May 16, 2023
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Supporting & Related Material April 22, 2026Report. Improving Our Regulations: Final Plan for Periodic Retrospective Reviews of Existing Regulations. August 2011
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Supporting & Related Material April 22, 20262011 Response to Comment Document. Oil and Natural Gas Sector: New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants Reviews 40 CFR Parts 60 and 63 Response to Public Comments on P...
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Supporting & Related Material April 22, 2026Memorandum. Use of the Upper Prediction Limit for Calculating MACT Floors. July 30, 2014
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Supporting & Related Material April 22, 2026Todd, M. American Petroleum Institute. (2016). Letter to McCarthy, G., EPA. Re: Environmental Protection Agency’s (EPA’s) “Request for Information – Oil and Natural Gas Sector: National Emission Standards for Hazardous ...
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Supporting & Related Material April 22, 2026Memorandum. E-Reporting of Policy Statement for EPA Regulations. September 30, 2013
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Supporting & Related Material April 22, 2026Record of EPA Meeting with Stakeholders (Litigants). Discussion of NESHAP Subparts HH and HHH Phase 2 Information Collection Request (ICR). July 1, 2024.
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Supporting & Related Material April 22, 2026GPA Petition. Re: Administrative Petition for Reconsideration for Reconsideration of Oil and Natural Gas Sector: New Source Performance Standards and National Emission Standards for Hazardous Air Pollutant Reviews; Final...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH ETC Northeast Pipeline Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH DCP Midstream Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH MPLX Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH ET Gathering and Processing Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Desoto Gathering Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Enable Oklahoma Intrastate Transmission Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Tennessee Gas Pipeline Company Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH ANR Pipeline Company Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Panhandle Eastern Pipe Line Company Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH ETC Texas Pipeline Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026A40 CFR Part 63 Subpart HHH Florida Gas Transmission Company Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Enable Midstream Partners Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Final EIA Memorandum. Economic Impact Analysis for National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities. Technology...
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Supporting & Related Material April 22, 2026Oil and Natural Gas NESHAP Economic Impacts Analyses. April 2026. (Supporting Analyses for Docket ID No. EPA-HQ-OAR-2025-1348-0123)
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Supporting & Related Material April 22, 2026WEA Petition. Re: Petition for Administrative Reconsideration of the Final Rule for Oil and Natural Gas Sector: New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants Reviews, 77 Fe...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH MPLX Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Columbia Gas Transmission Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Report. Lessons Learned from Natural Gas STAR Partners. Replacing Glycol Dehydrators with Desiccant Dehydrators.
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Supporting & Related Material April 22, 2026Report. Research and Development: Methane Emissions from the National Gas Industry. Volume 13: Chemical Injection Pumps. GRI-94/0257.30. EPA-600/R-96-08m. June 1996
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Supporting & Related Material April 22, 2026Technical Paper. Selection of Hydrate Suppression Methods for Gas Streams. 2006.
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Supporting & Related Material April 22, 2026Report. Oil and Natural Gas Sector: Emission Standards for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review. Background Technical Support...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Targa Pipeline Midcontinent Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Enable Gas Transmission Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Appalachia Midstream Services Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Enable Gas Gathering Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Federal Register Notices Cited in the April 2026 NESHAP Subparts HH and HHH Proposal Preamble
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Supporting & Related Material April 22, 2026Memorandum. Estimation of Metallic Hazardous Air Pollutants in Glycol Dehydrators and Acid Gas Removal Units. March 23, 2026
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Supporting & Related Material April 22, 2026Report. Economic Impact Analysis of the Oil and Natural Gas Production NESHAP. EPA-452/R-99-003. May 1999. and the Natural Gas Transmission and Storage NESHAP
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Supporting & Related Material April 22, 2026Memorandum. Recommendation of MACT Floor Levels for: HAP Emission Points at Major Sources in the Natural Gas Transmission and Storage Source Category. December 4, 1998
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Desoto Gathering Company Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Oasis Pipeline Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 20262026 Background Technical Support Document for NESHAP Subparts HH and HHH Proposed Rule Excel Supporting Workbooks for Process Controllers and Pumps.
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Supporting & Related Material April 22, 2026Report. Background Technical Support Document for the Proposed National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities...
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Supporting & Related Material April 22, 2026Memorandum. Recommendation of MACT Floor Levels for HAP Emission Points at Major Sources in the Natural GAs Transmission and Storage Source Category. December 4, 1998.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH DCP Operating Company Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Transwestern Pipeline Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH DCP Midstream Partners Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Enable Gas Gathering Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH ANR Pipeline Company Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Howard Midstream Energy Partners Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 2026Memorandum. Updated Control Options for Loading Operations at Gasoline Distribution Facilities. February 2, 2023.
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Supporting & Related Material April 22, 2026Report. Oil and Natural Gas Sector: Emission Standards for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review Background Technical Support D...
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Supporting & Related Material April 22, 2026API Petition. Re: Expanded Request for Administrative Reconsideration EPA’s Final Rule “Oil and Natural Gas Sector: New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants Reviews”....
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Whiskey Bay Gathering Company Phase 1 Information Collection Request Facility Response
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Supporting & Related Material April 22, 2026INGAA Petition. Oil and Natural Gas Sector: New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants Reviews, 77 Fed. Reg. 49490 (Aug. 16, 2012). Request for Administrative Reconside...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Trunkline Gas Company Phase 2 Information Collection Request Response/Certification Statement.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Rover Pipeline Phase 2 Information Collection Request Response.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Mountain Gathering Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Gulfport Energy Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 2026Hicks, W.T., Evaluation of Vapor-Pressure Data of Mercury, Lithium, Sodium, and Potassium, J. Chem. Phys., 1963, 38, 8, 1873-1880, https://doi.org/10.1063/1.1733889. Antoine Equation Parameters.
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Supporting & Related Material April 22, 2026Report. Oil and Natural Gas Sector: Emission Standards for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review. Background Technical Support ...
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Supporting & Related Material April 22, 2026Letter from EPA to Bryan Research and Engineering. EPA Approval of the use of ProMax model in lieu of GLYCalc model For performing the emissions and related parameter determinations for which the GLYCalc model is already...
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Supporting & Related Material April 22, 2026Email from EPA to Targa Resources. Sample Email Sent to Section 114 Information Collection Respondents. Re: Response to Requests to Extend the Date of Having to Submit Section 114 Information Collection Request Responses...
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Supporting & Related Material April 22, 2026Memorandum. Representative Detection Limit (RDL) for Organic HAP for Lime Manufacturing Sources. April 2024
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Ringwood Gathering Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 2026U.S. Environmental Protection Agency: NESHAP for Natural Gas Transmission and Storage (40 CFR part 63, subpart HHH) (2026 Technology Review and Reconsideration). Proposed Rule Subpart HHH Information Collection Request S...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Enable Mississippi River Transmission Phase 1 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Natural Gas Pipeline Company of America Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 20262015 NESHAP Request for Information Federal Register Notice (80 FR 74068, November 27, 2015) and Responses from Industry. November 27, 2015
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Supporting & Related Material April 22, 2026Memorandum. Composition of Natural Gas for use in the Oil and Natural Gas Sector Rulemaking. July 28, 2011
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Supporting & Related Material April 22, 2026Memorandum. Calculation of Emission Limits for Benzene, Toluene, Ethyl Benzene, and Xylenes (BTEX) in Small Glycol Dehydrators. March 23, 2026
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Supporting & Related Material April 22, 2026Report. National Emission Standards for Hazardous Air Pollutants for Source Categories: Oil and Natural Gas Production and Natural Gas Transmission and Storage Background Information for Proposed Standards. EPA-453/R-94-...
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Supporting & Related Material April 22, 2026Report. Economic Impact Analysis of the Proposed Oil and Natural Gas NESHAPs. Final Report. November 1996
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Supporting & Related Material April 22, 2026EPA Informational Meeting with Stakeholders (Plaintiffs). Oil and Gas NESHAP. Part 63 Subparts HH and HHH. Discussion Regarding EPA's CAA Section 114 Letter Request for Data. November 2, 2022.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Ringwood Gathering Phase 2 Information Collection Request Facility Response. Campbell Compressor Station
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Supporting & Related Material April 22, 2026Report (White Paper). Report for Oil and Natural Gas Sector Pneumatic Devices Review Panel. April 2014.
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Supporting & Related Material April 22, 2026Earthjustice Petition. In the Matter of: Final Rule Published at 77 Fed. Reg. 49,490 (Aug. 16, 2012), entitled “Oil and Gas Sector: New Source Performance Standards and National Emission Standards for Hazardous Air Pollu...
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Appalachia Midstream Services Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Appalachia Midstream Services Phase 2 Supplemental Information (Sample Information)
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Regency Marcellus Gas Gathering Phase 2 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH XTO Energy Inc. Phase 1 Information Collection Request Facility Responses and Supplemental Information
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HH Merit Energy Company Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material April 22, 202640 CFR Part 63 Subpart HHH Enable Oklahoma Intrastate Transmission Phase 2 Information Collection Request Facility Responses and Supplemental Information.
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Supporting & Related Material May 28, 2026Public Hearing Transcript 051226 EPA
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Proposed Rule June 22, 2026National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review and Reconsideration; Extension of Comment Period
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Supporting & Related Material June 26, 2026Letter. Re: Request for Public Hearing on National Emission Standards for Hazardous Air Pollutants: Crude Oil and Natural Gas Production Facilities and Natural Gas Transmission and Storage Facilities; Technology Review a...
Public comments
What people are saying
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Anonymous commenter 2026-08-13
“protect our environment and world NOW!!!! NO Pollution! NO Oil and Gas Lines, etc. Make It Right!!”
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Anonymous commenter 2026-08-13
“In response to Question #7, the American people understand the high standards held by the EPA in order to keep our families safe. The proposals weaken the protections, not strengthen them. The EPA themselves report that hazardous air pollutants can cause or are suspected to cause cancer, reproductive effects, birth defects, immune system damage, neurological harm, developmental harm, respiratory problems, and other serious health effects. The EPA also states that some toxic air pollutants can deposit onto soil and water, move through plants and animals, and magnify through the food chain. P...”
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Anonymous commenter 2026-08-13
“This proposal would cause significant harm to our home and our environment. Oil and gas facilities release hazardous air pollutants into communities already carrying the weight of fossil fuel infrastructure. The EPA itself states that hazardous air pollutants can cause or are suspected to cause cancer, reproductive effects, birth defects, immune system damage, neurological harm, developmental harm, respiratory problems, and other serious health effects. The EPA also states that some toxic air pollutants can deposit onto soil and water, move through plants and animals, and magnify through th...”
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Anonymous commenter 2026-08-13
“I wish that all aspects of our government, particularly those that affect our daily lives would please quit listening to that repulsive creep, trump; he knows nothing and does wish to know anything. How can anyone take him seriously in matters he know nothing about. Please recapture your souls for the sakes of all of us. TY”
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Anonymous commenter 2026-08-13
“PROTECT AMERICANS HEALTH,ESPECIALLY OUR CHILDREN! MORALS OVER MONEY!”
Read all comments on Regulations.gov →
Comment volume from Regulations.gov; the comment-submission API was retired in 2025, so comments are filed on Regulations.gov directly.
Documents
- Full text (Federal Register) · June 22, 2026
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