Federal Register #EPA-R05-OAR-2023-0635

EPA Regulatory Action: St. Clair Area SO₂ Attainment and DTE Belle River Power Plant Emissions Limits

This opportunity concerns the Environmental Protection Agency's (EPA) regulatory action regarding air quality in southeast Michigan: - Government Buyer: - Environmental Protection Agency (EPA) - OEMs and Vendors: - DTE Electric (Belle River Power Plant) - Products/Services Requested: - No procurement of goods or services is requested; this is a regulatory action - Unique or Notable Requirements: - Redesignation of the St. Clair area to attainment for the 2010 SO₂ National Ambient Air Quality Standard (NAAQS) - Approval of Michigan's air quality maintenance plan for the area - Establishment of new SO₂ emissions limits for the DTE Belle River Power Plant (Permit to Install 5122) - Incorporation of these limits into Michigan's State Implementation Plan (SIP) - Maintenance plan includes emissions inventory, demonstration of continued attainment, ongoing monitoring, verification, and contingency plans - No procurement, contracting, or acquisition of products/services is involved in this notice

Description

The Environmental Protection Agency (EPA) is taking final action to redesignate the St. Clair nonattainment area in southeast Michigan to attainment for the 2010 sulfur dioxide (SO2) National Ambient Air Quality Standard (NAAQS). The EPA is also approving Michigan's maintenance plan for the St. Clair SO2 nonattainment area and emissions limits for the DTE Belle River Power Plant. Michigan submitted the request for approval of the St. Clair area redesignation and maintenance plan on December 14, 2023, with a supplement on July 24, 2025. The EPA proposed to approve this action on April 10, 2026, and received no adverse comments.

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