The Missouri Department of Natural Resources released a proposed Updated Redesignation Request for the St. Louis Nonattainment Area for the 2015 Ozone Standard. The department will hold a public hearing about the proposed request updates during a Missouri Air Conservation Commission meeting. Please follow the link below for more information.
The department invites the public to review and offer written comments on the proposed request updates until Dec. 11, 2025. Written comments may be submitted by mail to Missouri Department of Natural Resources, Air Pollution Control Program, ATTN: Air Quality Section Chief, P.O. Box 176, Jefferson City, MO65102‐0176 or by email to apcpsip@dnr.mo.gov . Comments submitted by email are limited to 20MB in size. Comments larger than 20 MB need to be submitted by mail to the address above or call 573‐751‐4817 to make other arrangements.
The public can review the proposed request updates below. Although this document is referred to as an updated redesignation request, this document is distinct, separate and stand-alone from the redesignation request the air program submitted in April 2022. This updated redesignation request is based on more recent information including ozone season monitoring data during the three-year period of 2023-2025 and updated emission inventories and analysis years. This updated redesignation request does not rely upon any information included in the redesignation request submitted in 2022.
If the Commission adopts this action, the department intends to submit the plan to the U.S. Environmental Protection Agency. This updated request provides the technical demonstration needed to support EPA’s formal redesignation of the nonattainment area to attainment.