Tag: Greenhouse Gases

Beware Before You Flare: EPA Revamps Rulemaking to Pave the Way for Methane Emission Reductions

On November 15, 2022, the United States Environmental Protection Agency (US EPA) issued the pre-publication version of supplemental proposed rulemaking for reduction of methane emissions in the oil and natural gas sector. The original proposed rule, published on November 15, 2021, sought to strengthen methane standards for new sources (New Source Performance Standards or NSPS), establish nationwide emission guidelines (EG) for regulation of existing sources, and develop new standards for unregulated sources. US EPA ultimately received more than 470,000 public comments. The rules, once finalized, will be included in 40 CFR Part 60, Subpart OOOOb (NSPS) and Subpart OOOOc (EG).

The agency anticipated a need for additional review in the original proposed rule, in which US EPA stated it would issue supplemental proposed rulemaking under its authority in the Clean Air Act sections 111(b) and (d). While the original rule already had an ambitious target of reducing methane by 74%, the supplemental proposal would reduce methane from covered sources by 87% below 2005 levels. The rule generally governs production and processing (i.e., well sites, compressor stations, and natural gas processing plants) as well as natural gas transmission and storage.

Key changes in the supplemental proposed rule include the following:

  • Super-emitter Response Program: Establishment of a super-emitter response program intended to reduce the risk of such events. Owners or operators that receive certified notifications of emissions greater than 100 kg/hr of methane would be required to take action.
  • Well Closure Plans: EPA will now require owners of well sites to submit a well closure plan that includes steps to plug wells, requires financial assurance, and includes a schedule to complete the closure and perform a final survey.
  • Advanced Methane Detection: In response to comments supporting advanced methane detection technologies, EPA has proposed a matrix where owners and operators have the flexibility to use approved alternative screening approaches with development of a plan and notification to the agency. The agency will further update the proposed protocol for optical gas imaging (OGI) in Appendix K.
  • Leak Inspection: EPA will now require identification and correction of leaks, a source of fugitive emissions, at all well sites, including new and existing. While EPA removed exemptions, the type of leak monitoring will vary depending on site characteristics and equipment in four primary categories: (1) single wellhead-only and small well sites; (2) wellhead-only sites with two or more wellheads; (3) sites with major production and processing equipment; and (4) well sites on the Alaska North Slope.
  • Flares: EPA will require flare flames to be lit at all times. Additionally, in order to flare, owners of oil wells with associated gas will be required to either implement alternatives permitted by the rule (such as routing to a sales line) or certify that alternatives are not safe or technically feasible.
  • Additional Regulated Sources: EPA has added strengthened standards for pneumatic pumps (zero-emission standard), updated standards for wet seal centrifugal compressors, and developed new standards for dry seal centrifugal pumps (currently unregulated).

Given the agency’s significant focus on environmental justice and community outreach, US EPA also seeks to provide more opportunities for vulnerable communities and Tribal communities to participate in the development of state plans. In fact, the agency held a webinar specific to Tribal communities and environmental justice communities on November 17, 2022. During the webinar, US EPA explained how the revised rule requires states to conduct meaningful engagement with vulnerable communities through early outreach and request for input. States developing plans for EG will be required to participate in “timely engagement with pertinent stakeholder representation . . . [i]t must include the development of public participation strategies to overcome linguistic, cultural, institutional, geographic, and other barriers to participation to assure pertinent stakeholder representation.”

The agency is also seeking additional insight from the regulated industry on advanced technologies that can be utilized to reduce methane and utilize associated gas. The original proposed rule requested public comment on a potential standard for oil wells with associated gas that would require owners or operators to route associated gas to a sales line or, alternatively, use it for another beneficial use. During this round of comments, US EPA now seeks to understand emerging technologies “that provide uses for the associated gas in a beneficial manner other than routing to a sales line, using as a fuel, or reinjecting the gas.”

The agency extended the timeline for a final rulemaking to 2023 and has issued new opportunities for public comment and training. Written comments are due to the agency by February 13, 2023 and can be submitted to Docket No. EPA-HQ-OAR-2021-0317. There will also be a series of public hearings on January 10-11, 2023 that require advance registration. To assist in preparation, US EPA published a document highlighting areas where the agency continues to seek public input. We are prepared to assist clients in engaging with the agency by providing comment and preparing for the final rule to be implemented next year.

Article By Jennifer Tharp of Squire Patton Boggs (US) LLP

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New Supreme Court Ruling On EPA Authority Over Greenhouse Gases (GHGs) – Little Clarification on the 111(d) Regulations

Lewis Roca Rothgerber

Last week, the United States Supreme Court issued a significant decision in Utility Air Regulatory Group v. EPA, that substantially restricts the authority of the U.S. Environmental Protection Agency (EPA) to regulate greenhouse gas emissions (GHGs) from stationary sources under the Clean Air Act’s Prevention of Significant Deterioration (PSD) and Title V permitting programs. The Supreme Court’s decision holds that EPA may not impose permitting requirements on facilities based solely on their emissions of GHGs, but may regulate GHG emissions under the PSD and Title V programs, only if a facility is otherwise subject to major source permitting requirements.

Background

EPA interpreted the Clean Air Act to require stationary sources to obtain construction and operating permits under the PSD and Title V programs whenever a facility emits GHGs above certain threshold levels. The threshold levels EPA chose were different than the levels established by Congress in the Clean Air Act, because the statutory levels when applied to GHGs were too low (as compared to criteria pollutant thresholds), and applying those levels to GHG emissions would lead to “absurd results” by subjecting millions of small sources such as shopping malls, hospitals and churches to major source permitting requirements. These thresholds were established in what is known as the “Tailoring Rule.”

The Tailoring Rule triggered regulatory review for two different source categories (for purposes of GHG emissions): sources that were already subject to major source review under the Clean Air Act because of emissions of criteria pollutants in excess of the major source thresholds (so-called “anyway” sources) and those sources that would trigger major source review for the first time based solely on emissions of GHGs in excess of the “tailored” thresholds set by EPA.

Holding

The Supreme Court’s divided 5-4 decision, authored by Justice Scalia, held that EPA’s rulemakings setting “tailored” thresholds for GHGs were invalid. The Court, however, stopped short of holding that GHGs could not be regulated at all under the PSD and Title V programs.

Specifically, the Supreme Court upheld EPA’s approach of requiring “best available control technology” (BACT) standards for GHGs for those sources otherwise required to obtain a PSD permit (the “anyway” sources). The Court emphasized, though, that it was not approving EPA’s current approach to BACT regulation of GHGs, or of any future approach that EPA might adopt. The Supreme Court categorized this aspect of the holding as having only a small impact on the regulated community, stating that 85 percent of all GHG major sources are “anyway” sources, while only an additional 3 percent would be major sources under the GHG tailoring trigger.

The Supreme Court also reaffirmed its decision in Massachusetts v. EPA, which held that GHGs qualify as an “air pollutant” for purposes of the term’s general definition in the Clean Air Act.

Takeaways and Import of This Case on 111(d) Regulations:

1)      GHG Emissions Alone Do Not Trigger Major Source Permitting Obligations – The principal legal holding of the decision is also considered the most significant from a practical perspective. Stationary sources cannot, under the Court’s ruling, be subject to permitting requirements based solely on their emissions of GHGs. The Court’s math on the number of sources impacted by this core aspect of the decision is questionable, and there is suspicion that many potentially major sources were specifically planning facilities to avoid major source permitting review by designing facilities to avoid the tailoring trigger for GHGs. In short, the impact of this decision is potentially very significant for the regulated community.

2)      Greenhouse Gas Emissions Are an “Air Pollutant” Subject to Regulation under the Clean Air Act. While the decision holds that GHGs are not an “air pollutant” for purposes of triggering PSD and Title V permitting requirements, it stops short of holding that GHGs are not an “air pollutant” for other purposes. To the contrary, the Court affirmed its prior holding in Massachusetts v. EPA, that the term “air pollutant,” as generally defined in the Clean Air Act, includes GHGs.

3)      Mixed Signals About EPA’s Authority to Issue NSPS Regulations Under 111(d). The Supreme Court was careful to note that EPA’s authority to regulate GHG emissions under the New Source Performance Standards (NSPS)  were not at issue and did not need to be addressed (that is, the Court specifically did not address the proposed 111(d) rules).

a)      As noted above, the Supreme Court reinforced that GHGs may be regulated as an air pollutant under other aspects of the Clean Air Act (just not PSD or Title V). Though the Supreme Court found that EPA was right to determine that the statutory thresholds for major source review would lead to “absurd results” in the PSD and Title V context for major source triggers, the Court said nothing about EPA’s authority to regulate under the NSPS provisions of Section 111(d). One way to interpret the decision is that it cloaks EPA with apparent authority to address GHGs as an “air pollutant” under Section 111(d).

b)      On the other hand, the Supreme Court took a stern tone in admonishing EPA for over-stepping its bounds. As an example, the Court warns EPA: “[W]hen an agency claims to discover in a long-extant statute an unheralded power to regulate ‘a significant portion of the American economy,’ we typically greet its announcement with a measure of skepticism.” That statement was directed at EPA’s attempt to regulate GHGs in the PSD and Title V programs, but the same argument might be made in the 111(d) context.

Conclusion

There are still many questions to be answered surrounding the 111(d) regulations proposed by EPA. This decision clarifies the overall picture of GHG regulation slightly, but does little to provide a clear boundary on EPA’s authority over GHGs. No doubt, this decision will be cited by both those in favor and those against the 111(d) regulations.

Article By:

Adam DeVoe
Of:
Lewis Roca Rothgerber LLP