USA EPA Oil and Gas Methane Rule: Establishes nationwide methane performance standards for new sources and emissions guidelines for existing sources with LDAR

What’s Required

The rule is implemented under Clean Air Act Section 111 and is commonly referred to as Subparts OOOOb (NSPS) and OOOOc (emissions guidelines for existing sources), with supporting compliance pathways and optional advanced monitoring methods.

1) New source performance standards (OOOOb) compliance
Operators of covered new, modified, and reconstructed facilities must meet equipment- and process-level methane and VOC limits, including:

• Regular LDAR surveys at specified frequencies using approved methods.

• Control requirements for storage vessels and associated equipment.

• Limits and standards for pneumatic controllers and pumps.

• Standards for flaring and certain venting events were addressed in the rule.

Compliance typically requires a facility-specific inventory of regulated components, a monitoring plan, and repair protocols with documentation suitable for inspection.

2) Existing source emissions guidelines (OOOOc) and state plan pathway
For existing sources, the EPA establishes emissions guidelines that states must translate into enforceable requirements through state plans. Regulated entities must prepare for state-level implementation that mirrors or exceeds federal guidelines, including LDAR and equipment standards. State plan deadlines and compliance dates can shift through EPA actions, including deadline extensions.

3) “Super-emitter” response program
EPA’s framework includes a mechanism to identify large emission events (super-emitters) using advanced technologies such as satellites, aircraft, or continuous monitoring, and requires owners/operators to investigate and respond when notified under the program’s procedures. Operationally, firms need internal incident management, rapid dispatch repair capacity, and recordkeeping.

4) Alternative test methods and advanced methane detection technologies
EPA provides options to use advanced methane detection technologies as alternative compliance methods, which require applications, method validation, and adherence to EPA-specified data and reporting expectations.

5) Interface with federal reporting and the IRA methane program
The methane rule interacts with EPA’s broader methane emissions reduction program under the IRA, including updates to greenhouse gas reporting for oil and gas. Compliance teams should treat Part 60 requirements (standards) and Part 98 reporting obligations as linked controls because data inconsistencies can trigger enforcement scrutiny.

Important Deadlines

• Rule announced as final: December 2, 2023 (EPA summary).

• Federal Register publication: March 2024 for the “Oil and Natural Gas Sector Climate Review” final rule package (Federal Register posting).

• State plan and implementation timing: EPA has issued extensions for certain deadlines affecting Subpart OOOOc submissions.

Current Status

The final rule is in force, with implementation steps continuing through guidance, webinars, and state plan processes. EPA has also issued administrative actions extending certain deadlines for existing source plan submissions.

Penalties for Non-Compliance

• Civil penalties for violations of Clean Air Act standards (including failure to monitor, maintain records, or meet emission limits).

• Injunctive relief and compliance orders.

• Potential criminal exposure for knowing violations or falsification of records.

Non-compliance can also create operational disruption through enforcement-driven shutdowns or repair mandates.

Examples of Known Violations

Common failure modes in methane programs include:

• Missing LDAR surveys or using unapproved methods.

• Late repairs or inadequate repair verification.

• Poor component inventories lead to incomplete monitoring coverage.

• Recordkeeping gaps for inspections, repairs, and monitoring results.

• Failure to respond rapidly to identified high-emitting events under super-emitter procedures.

These issues often present as documentation failures, but they can also indicate persistent uncontrolled emissions.

Resources

• https://www.epa.gov/controlling-air-pollution-oil-and-natural-gas-operations/epas-final-rule-reduce-methane-and-other

• https://www.federalregister.gov/documents/2024/03/08/2024-00366/standards-of-performance-for-new-reconstructed-and-modified-sources-and-emissions-guidelines-for

• https://www.federalregister.gov/documents/2025/07/31/2025-14531/extension-of-deadlines-in-standards-of-performance-for-new-reconstructed-and-modified-sources-and-