The Missouri Department of Natural Resources is proposing revisions to the Missouri State Implementation Plan (SIP) to include a voluntary consent agreement between the department and Ameren's Sioux Energy Center, located in St. Charles County. The department invites the public to review and offer written comments on the proposed consent agreement until Feb. 3, 2022. All comments must be received or postmarked by 5 p.m. The public can review the proposed revisions below.
Written comments may be submitted by mail to Missouri Department of Natural Resources, Air Pollution Control Program, ATTN: Air Quality Planning Section Chief, PO Box 176, Jefferson City, MO 65102-0176 or by email to apcpsip@dnr.mo.gov. The department will hold a public hearing about the proposed revision during the Missouri Air Conservation Commission meeting on Jan. 27, 2022. Please follow the hearing link for more information.
Through the consent agreement, the Ameren Sioux facility is agreeing to enforceable sulfur dioxide (SO2) requirements that are lower than their current permitted levels. This will allow the department to take credit in the SIP for reductions in SO2 emissions that Ameren achieved at the Sioux facility.