Company: WELPM
Filing Date: 2025-10-31
Form Type: 10-Q
Source: 0000107815-25-000207
Chunk: 129

Company: WISCONSIN ELECTRIC POWER CO
Filing Date: 2025-10-31
Form: 10-Q
Item: Part I, Item 8
Chunk 129
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 proposed rule to repeal the 2024 Final Action on the basis that it imposed large compliance costs and raised technical feasibility concerns. Currently, the EPA is reviewing comments it received on the proposed rule.National Ambient Air Quality StandardsOzoneAfter completing its review of the 2008 ozone standard, the EPA released a final rule in October 2015, creating a more stringent standard than the 2008 NAAQS. The 2015 ozone standard lowered the 8-hour limit for ground-level ozone. In November 2022, the EPA's 2022 CASAC Ozone Review Panel issued a draft report supporting reconsideration of the 2015 standard. The EPA staff initially issued a draft Policy Assessment in March 2023 that also supported the reconsideration; however, in August 2023, the EPA announced that it was instead restarting its ozone standard evaluation. The EPA released the first two volumes of its Integrated Review Plan in December 2024. This new review is anticipated to take 3 to 5 years to complete.In February 2022, revisions to the Wisconsin Administrative Code to adopt the 2015 standard were finalized. The amended regulations incorporated by reference the federal air pollution monitoring requirements related to the standard. The WDNR submitted the rule updates as a SIP revision to the EPA, which the EPA approved in February 2023. The EPA's initial nonattainment area designation was effective August 2018, and the attainment status is evaluated every 3 years thereafter until attainment is achieved. The Milwaukee, Sheboygan, and Chicago, IL-IN-WI nonattainment areas did not meet the marginal attainment deadline of August 2021, so in April 2022 the EPA proposed "moderate" nonattainment status based on the 2015 standard. In October 2022, the EPA published its final reclassifications from "marginal" to "moderate" for these areas, effective November 7, 2022. The most recent attainment evaluation date was in August 2024. The moderate attainment deadline was not met, so in December 2024 the EPA published a final determination reclassifying the nonattainment areas in Wisconsin to a "serious" classification effective January 16, 2025. The Wisconsin Department of Justice filed a petition in February 2025 for review of the reclassification to "serious."In September 2025, the United States Court of Appeals for the Seventh Circuit granted the State of Wisconsin's motion to stay the reclassification until further notice. This