Federal Register #EPA-R05-OAR-2024-0268

EPA Approval of Minnesota SIP Revision for Metro Wastewater Treatment Plant Emissions

This EPA action concerns the approval of a State Implementation Plan (SIP) revision for the Metropolitan Council Wastewater Treatment Plant in Ramsey County, Minnesota. - Government Buyer: - Environmental Protection Agency (EPA) - Minnesota Pollution Control Agency (MPCA) (state-level involvement) - Facility: Metropolitan Council Environmental Service (MCES) Metro Wastewater Treatment Plant - Products/Services Requested: - No procurement of products or services; this is a regulatory approval - SIP revision incorporates changes to ash-handling equipment and sets lower allowable PM10 emissions for: - Fluidized Bed Incinerators (EQUI 3, EQUI 4, EQUI 5) - Auxiliary Boilers (EQUI 10, EQUI 11) - Ash Loadout Vacuum (EQUI 50) - Unique/Notable Requirements: - Establishes federally enforceable Title I SIP conditions - Results in lower allowable emissions of particulate matter less than 10 microns (PM10) - Incorporated into the facility's part 70 permit - No OEMs or vendors are mentioned; this is not a procurement opportunity or contract award.

Description

The Environmental Protection Agency (EPA) is approving a request from the Minnesota Pollution Control Agency (MPCA) to revise its State Implementation Plan (SIP) by addressing changes at the Metropolitan Council Environmental Service (MCES) Metropolitan Council Wastewater Treatment Plant (Metro Plant) in Ramsey County, Minnesota. This SIP revision includes an amendment to a part 70 permit maintaining federally enforceable title I SIP conditions and will result in a reduction of allowable emissions of particulate matter less than 10 microns (PM10) emitted by the facility. The EPA proposed to approve this action on November 20, 2025, and the final rule is effective June 15, 2026.

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