Air Pollution Control Program

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State Plan Actions                                                                    

On Public Notice | Proposed for Adoption

On Public Notice

Missouri State Implementation Plan Revision - Supplement/Revision to the Redesignation Demonstration and Maintenance Plan for the Missouri Portion of the St. Louis Nonattainment Area for the 1997 8-Hour Ground Level Ozone National Ambient Air Quality Standard

The Missouri Department of Natural Resources’ Air Pollution Control Program (Air Program) is in the process of redesignating the St. Louis area to attainment for the 1997 ozone NAAQS. On Nov. 27, 2011, the Missouri Air Conservation Commission adopted the Redesignation Demonstration and Maintenance Plan for the Missouri Portion of the St. Louis Nonattainment Area for the 1997 Ozone NAAQS. The plan was then submitted to the U.S. Environmental Protection Agency (EPA) on Nov. 28, 2011, for inclusion in the Missouri State Implementation Plan.  The plan was not acted upon at that time due to litigation surrounding the federal interstate air pollution transport rules. The Air Program is now proposing a technical supplement/revision to the 2011 plan. This revision will make corrections to the emissions inventories in the plan and update the future year projections of the plan from 2022 to 2025.

Proposed Supplement/Revision to the Redesignation Demonstration and Maintenance Plan for the Missouri Portion of the St. Louis Nonattainment Area for the 1997 8-Hour Ground Level Ozone National Ambient Air Quality Standard

Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G
Appendix H

A public hearing was held for this plan action on March 27, 2014.  Comments about this plan action were accepted through the close of business on April 3, 2014. 

Proposed for Adoption

Missouri State Implementation Plan Revision - Limited Maintenance Plan for the St. Louis Nonclassifiable Maintenance Area for the 8-Hour Carbon Monoxide National Ambient Air Quality Standard

The initial maintenance plan for the St. Louis nonclassifiable Carbon Monoxide (CO) maintenance area ensured attainment of the CO NAAQS through 2008.  Pursuant to Section 175A(b) of the Clean Air Act, the State must submit a subsequent plan revision for maintaining the standard for an additional 10 year period after the expiration of the first maintenance period.  The Air Program has developed a second maintenance plan that provides for continued attainment of the 8-hour CO NAAQS for the St. Louis area from 2008 through 2018.  The plan provides assurances that, in the event of a subsequent violation of the CO NAAQS, additional control options, called contingency measures, can quickly be implemented to prevent any future violations.  In addition, this plan includes CO ambient air quality monitoring data from the last seven years and an updated emission inventory for average winter day CO emissions in the St. Louis area.   

Proposed Revision to Limited Maintenance Plan for the St. Louis Nonclassifiable Maintenance Area for the 8-Hour Carbon Monoxide National Ambient Air Quality Standard

Appendix A
Appendix B

Response to Comments

A public hearing was held for this plan action on Jan. 30, 2014.  Comments about this plan action were accepted through the close of business on Feb. 6, 2014. 

Missouri State Implementation Plan Revision - Americold Logistics, LLC 24-Hour Particulate Matter (PM10) National Ambient Air Quality Standard (NAAQS) Consent Judgment

As required by Section 110(a) of the Clean Air Act, Missouri’s State Implementation Plan (SIP) must ensure attainment and maintenance of all National Ambient Air Quality Standards (NAAQS).   The Missouri Department of Natural Resources’ Air Pollution Control Program is proposing to amend and strengthen the Missouri SIP to address violations of the 24-hour coarse particulate matter (PM10) NAAQS of 150 micrograms per cubic meter (µg/m3) near the Americold Logistics, LLC’s Carthage Crushed Limestone (CCL) facility.  The SIP revision consists of a consent judgment with CCL for measures intended to reduce PM10 emissions at the facility, all of which are scheduled for installation and operation by March 31, 2014.

Proposed CCL PM10 SIP Revision
Attachment 2 – Proposed CCL Consent Judgment
Exempt Equipment List

Response to Comments

A public hearing was held for this plan action on Jan. 30, 2014.  Comments about this plan action were accepted through the close of business on Feb. 6, 2014. 

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