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AGENCY:
Environmental Protection Agency (EPA).
ACTION:
Final rule.
SUMMARY:
The Environmental Protection Agency (EPA) is taking final action to approve State implementation plan (SIP) revisions from the Sacramento Metropolitan Air Quality Management District (SMAQMD or “District”) to address Clean Air Act (CAA or “Act”) requirements related to the 2008 8-hour ozone national ambient air quality standards (NAAQS or “standards”). These revisions concern emissions of oxides of nitrogen (NOX) from boilers, gas turbines, and miscellaneous (“misc”) combustion units as well as reasonably available control technology (RACT) requirements for major sources of NOX in the portion of the Sacramento Metro, CA, nonattainment area that is subject to SMAQMD jurisdiction.
DATES:
This rule is effective October 25, 2024.
ADDRESSES:
The EPA has established a docket for this action under Docket ID No. EPA-R09-OAR-2024-0197. All documents in the docket are listed on the https://www.regulations.gov website. Although listed in the index, some information is not publicly available, e.g., Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only in hard copy form. Publicly available docket materials are available through https://www.regulations.gov, or please contact the person identified in the FOR FURTHER INFORMATION CONTACT section for additional availability information. If you need assistance in a language other than English or if you are a person with a disability who needs a reasonable accommodation at no cost to you, please contact the person identified in the FOR FURTHER INFORMATION CONTACT section.
FOR FURTHER INFORMATION CONTACT:
Eugene Chen, EPA Region IX, 75 Hawthorne St., San Francisco, CA 94105. By phone: (415) 947-4304 or by email at chen.eugene@epa.gov.
SUPPLEMENTARY INFORMATION:
Throughout this document, “we,” “us,” and “our” refer to the EPA.
Table of Contents
I. Proposed Action
II. Public Comments and EPA Responses
III. EPA Action
IV. Incorporation by Reference
V. Statutory and Executive Order Reviews
I. Proposed Action
On July 2, 2024, the EPA proposed to approve the California Air Resources Board's (CARB) submittal of a SIP revision adopted by the SMAQMD. As discussed in our proposed action, this SIP revision adopted portions of several permits issued under the District's SIP-approved New Source Review (NSR) permit program (“District Permits”) for submittal into the SIP. These District Permits are relied upon to implement RACT for major sources of NOX, and we proposed to determine that these District Permits would comply with the EPA's Startup, Shutdown, and Malfunction (SSM) policy and other applicable Clean Air Act (CAA or “Act”) requirements. Based on our review, we proposed to determine that these District Permits, in conjunction with the SIP-approved NOX limits already established in Rule 411 (NOX from Boilers, Process Heaters and Steam Generators) and Rule 413 (Stationary Gas Turbines), implement RACT for each major NOX source in the District. We therefore also proposed to approve the major source NOX RACT element of the 2017 RACT SIP for the 2008 ozone NAAQS.
Table 1—Submitted Documents
| Local agency | Document/ rule No. | Document title | Adopted | Submitted |
|---|---|---|---|---|
| SMAQMD | Reasonably Available Control Technology (RACT) Permits for Major Stationary Sources of Nitrogen Oxides | 03/28/2024 | 04/11/2024 |
Table 2—District Permits Included in April 11, 2024 Submittal