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EPARulemakingEPA-HQ-OAR-2024-0419

Review of New Source Performance Standards for Stationary Combustion Turbines

RIN
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Last modified
Jun 15, 2026
Comment window
closed 469d ago
Environmental Defense Fund filings
9

Activity

Environmental Defense Fund filed 9 comments on this docket between Jan 22, 2025 and Oct 22, 2025. 26 other organizations filed here. The comment window closed 469d ago.

What Environmental Defense Fund filed (9)

Oct 22, 2025· Comment submitted by Environmental Defense Fund (EDF)· EPA-HQ-OAR-2024-0419-0223

Filed on regulations.gov — full text not in the inline record.

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Apr 16, 2025· Comment submitted by Sierra Club, Environmental Defense Fund, Clean Air Task Force, Clean Wisconsin (Part 6 of submission)· EPA-HQ-OAR-2024-0419-0111

Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin submit the following attached documents in support of our comments to Docket No. EPA-HQ-OAR-2024-0419 on EPA's Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines. 89 Fed. Reg. 101,306 (Dec. 13, 2024). (Part 6 of submission)

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Apr 16, 2025· Comment submitted by Sierra Club, and Environmental Defense Fund (EDF)· EPA-HQ-OAR-2024-0419-0092

Environmental Defense Fund and Sierra Club submit the following documents on NOx controls from the docket supporting the "Federal Implementation Plan Addressing Regional Ozone Transport for the 2015 Primary Ozone National Ambient Air Quality Standard (2023)," which provide support for the feasibility and cost-effectiveness of NOx controls in this rulemaking. (See EDF et al. comments p. 34, Doc. ID EPA-HQ-OAR-2024-0419-0061)

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Mar 20, 2025· Comment submitted by Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin (Part 4 of 5)· EPA-HQ-OAR-2024-0419-0064

Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin submit the following attached documents in support of our comments to Docket No. EPA-HQ-OAR-2024-0419 on EPA's Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines. 89 Fed. Reg. 101,306 (Dec. 13, 2024). (Part 4 of submission)

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Mar 20, 2025· Comment submitted by Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin (Part 5 of 5)· EPA-HQ-OAR-2024-0419-0065

Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin submit the following attached documents in support of our comments to Docket No. EPA-HQ-OAR-2024-0419 on EPA's Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines. 89 Fed. Reg. 101,306 (Dec. 13, 2024). (Part 5 of submission)

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Mar 20, 2025· Comment submitted by Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin (Part 3 of 5)· EPA-HQ-OAR-2024-0419-0063

Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin submit the following attached documents in support of our comments to Docket No. EPA-HQ-OAR-2024-0419 on EPA's Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines. 89 Fed. Reg. 101,306 (Dec. 13, 2024). (Part 3 of submission)

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Mar 20, 2025· Comment submitted by Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin (Part 1 of 5 )· EPA-HQ-OAR-2024-0419-0061

Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin submit the following comment and attached documents in support of our comments to Docket No. EPA-HQ-OAR-2024-0419 on EPA's Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines. 89 Fed. Reg. 101,306 (Dec. 13, 2024). (Part 1 of submission)

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Mar 20, 2025· Comment submitted by Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin (Part 2 of 5)· EPA-HQ-OAR-2024-0419-0062

Sierra Club, Environmental Defense Fund, Clean Air Task Force, and Clean Wisconsin submit the following attached documents in support of our comments to Docket No. EPA-HQ-OAR-2024-0419 on EPA's Review of New Source Performance Standards for Stationary Combustion Turbines and Stationary Gas Turbines. 89 Fed. Reg. 101,306 (Dec. 13, 2024). (Part 2 of submission)

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Jan 22, 2025· Comment submitted by Environmental Defense Fund (EDF)· EPA-HQ-OAR-2024-0419-0033

Testimony of Richard Yates, Clean Power Attorney, Environmental Defense Fund

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Abstract

The EPA will conduct a Clean Air Act-required technology review of the new source performance standards (NSPS) for stationary combustion turbines under 40 CFR part 60, subpart KKKK. This technology review will include an analysis of criteria pollutant emissions, including but not limited to nitrogen oxides (NOx). The EPA previously proposed standards of performance for affected stationary combustion turbines in February 2005, and, in July 2006, finalized emission limits for NOx and sulfur dioxide (SO2). Subpart KKKK currently applies to stationary combustion turbines with a heat input at peak load equal to or greater than 10.7 gigajoules or 10 MMBtu per hour. The EPA has entered into a consent decree to propose the findings of its completed review of subpart KKKK in November 2024.

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Co-filers (26)

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