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Under the Obama Administration, EPA issued rules for new sources in the oil and gas sector, both to expand the kinds of sources covered and to begin regulating a new pollutant—methane.  Although those rules were not expected to achieve significant new reductions in emissions, they triggered a requirement for EPA to expand its methane regulations further to existing sources.
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EPA published a proposed rule in the Federal Register on August 9, 2019 that addresses how facilities undertaking a project involving multiple air emission units are to account for emission increases and decreases associated with the project. The proposed rule incorporates an interpretation of EPA’s New Source Review (NSR) regulations originally advanced in a March 2018 guidance document from Administrator Scott Pruitt entitled “Project Emissions Accounting Under the New Source Review Preconstruction Permitting Program.”
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Troutman Sanders attorneys Randy Brogdon and Rich Pepper  authored an article published in Law360 titled “Workplace Safety’s Little-Known Hammer: The Clean Air Act” which examines the workplace safety requirements of the Clean Air Act and the potential consequences of exclusively relying on similar, but not identical, requirements under the Occupational Safety and Health Act. They…

On June 25, 2019, EPA released a pre-publication draft of a proposed rule allowing sources subject to Maximum Achievable Control Technology (MACT) standards under Section 112 of the Clean Air Act to voluntarily limit their emissions and avoid MACT.  The proposed rule, which formalizes and expands on a January 2018 guidance document issued by former EPA Assistant Administrator Bill Wehrum, would allow “major sources” of hazardous air pollutants (HAPs) otherwise subject to MACT standards to take an enforceable limit on HAPs and thus reclassify as “area sources.”  The rulemaking, branded by the Agency as “Major MACT to Area” (MM2A), would eliminate the Agency’s longstanding “once-in-always-in” policy, under which a facility that qualified as a major source of HAPs as of the “first substantive compliance date” of the applicable MACT standard was permanently subject to that standard, even if the source was later able to reduce its emissions below major source applicability thresholds. …
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EPA fulfilled one of President Trump’s campaign promises this week with the publication of the final Affordable Clean Energy rule—ACE—to replace the Clean Power Plan.  Like the Clean Power Plan, ACE is an “emission guideline” issued under Section 111(d) of the Clean Air Act to regulate the emission of carbon dioxide (CO2) from the electric utility sector.  However, while the Clean Power Plan could only be achieved by shifting electricity generation away from energy resources that emit CO2, ACE only regulates sources of CO2 emissions directly by requiring efficiency improvements at coal-fired power plants.

The notice published on Monday actually contains three separate actions: (1) the repeal of the Clean Power Plan, (2) the adoption of ACE, and (3) revisions to the general regulations governing all “emission guidelines” adopted under Section 111(d).  EPA asserts that each of these components constitutes a separate rulemaking action, but at least the first two are grounded in the same fundamental idea—that Section 111(d) only authorizes EPA to select as a “best system of emission reduction” something that can be “applied” to an individual regulated “stationary source” of emissions. …
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On June 21, 2019, the White House Council on Environmental Quality (CEQ) released a new draft guidance redefining the process federal agencies will use to evaluate greenhouse gas (GHG) emissions under the National Environmental Policy Act (NEPA). In marked contrast to GHG guidance issued by CEQ under the Obama Administration in 2016, the draft guidance encourages federal agencies undertaking NEPA review to follow the “rule of reason” and use their “expertise and experience” to decide whether and to what degree the agency will analyze particular effects of GHG emissions. Therefore, the draft guidance moves to a more deferential approach to agency review under NEPA than the Obama Administration’s prescriptive guidance. The draft guidance will be published in the Federal Register for public review and comment. If finalized, it will replace the Obama Administration’s 2016 guidance, which was withdrawn effective April 5, 2017, after President Trump issued Executive Order (EO) 13783, “Promoting Energy Independence and Economic Growth.” …
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On June 28, EPA proposed to partially approve Georgia’s coal combustion residuals (CCR) state permit program.  If finalized, Georgia’s program will become the second to receive EPA’s approval and will operate in place of the federal CCR requirements.

In its proposal, EPA determined that—with the exception of four provisions—Georgia’s program meets the standard for EPA approval.  EPA proposed to partially approve Georgia’s program since it does not incorporate certain endangered species provisions and because it includes now-vacated provisions that exclude inactive surface impoundments at inactive facilities from regulation, allow unlined surface impoundments to continue receiving CCR unless they leak, and classify clay-lined surface impoundments as lined.  Georgia’s CCR rule has not been revised to reflect the vacatur of these provisions because EPA has not yet finalized those changes at the federal level.  EPA plans to issue proposals to address these topics in 2019.  Once finalized, Georgia EPD can amend its regulations to align with EPA’s changes and then apply for approval of those amendments at a later date.…
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On June 13, 2019, EPA published a final rule that revises its release notification requirements under the Emergency Planning and Community Right-to-Know Act (EPCRA).  Specifically, the revision exempts from EPCRA reporting air emissions from animal waste at farms.  While these air emissions are now exempt from reporting requirements, releases from animal waste to other water and land must still be reported.…
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EPA Region 6 has proposed to withdraw a 2015 finding that Texas’s State Implementation Plan (SIP) is substantially inadequate to comply with the Clean Air Act (CAA) because of state rules that provide an affirmative defense for excess air emissions that occur during upsets and unplanned maintenance, startup, and shutdown activities. 82 Fed. Reg. 17,986 (Apr. 29. 2019). Region 6 is now proposing to find that Texas’s affirmative defense provisions for so-called “startup, shutdown, and malfunction” or “SSM” events are “narrowly tailored and limited to ensure protection of the National Ambient Air Quality Standards (NAAQS),” as required by EPA guidance. Accordingly, Region 6 is proposing to withdraw EPA’s 2015 “SSM” SIP call issued to Texas based on the finding of substantial inadequacy.…
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The Environmental Protection Agency (EPA) has proposed to expand the applicability of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for stationary combustion turbines. EPA originally established the combustion turbine (CT) NESHAP in 2004. On April 12, EPA officially proposed the long overdue residual risk and technology review (RTR), which is required within eight years of the final standards.

While, based on its RTR analysis, EPA proposes to leave the current CT standards in place, the proposal would expand the reach of those standards to two additional subcategories of units by lifting a stay that has been in effect since the standards were originally finalized. Lifting that 15-year-old stay would impact lean pre-mix and diffusion flame natural-gas-fired CTs. The proposal would also eliminate the startup, shutdown, and malfunction exemption for all units subject to the rule. Although all existing lean pre-mix and diffusion-flame gas-fired units would become subject to the NESHAP, only units constructed or reconstructed after January 14, 2003 must comply with substantive emission and operating limitations.…
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