Delegation of Authority in Missouri for New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants
The Environmental Protection Agency (EPA) has established procedures by which Missouri is automatically delegated the authority to implement Federal standards when they adopt regulations which are identical to the Federal standards. The tables below indicate the standards for which delegation has been given.
Contents
- What is the authority for delegation?
- What does delegation accomplish?
- What has been delegated?
- Part 60 New Source Performance Standards (NSPS)
- Part 61 National Emission Standards for Hazardous Air Pollutants (NESHAP)
- Part 63 NESHAP - Maximum Achievable Control Technology (MACT) Standards
- What has not been delegated?
What is the authority for delegation?
- Section 111(c)(1) of the Clean Air Act (CAA) authorizes EPA to delegate authority to any state agency which submits adequate regulatory procedures for implementation and enforcement of the NSPS program. The NSPS are codified at 40 CFR part 60.
- Section 112(l) of the CAA and 40 CFR part 63, subpart E, authorizes EPA to delegate authority to any state or local agency which submits adequate regulatory procedures for implementation and enforcement of emission standards for hazardous air pollutants. The hazardous air pollutant standards are codified at 40 CFR parts 61 and 63, respectively.
What does delegation accomplish?
Delegation confers primary responsibility for implementation and enforcement of the listed standards to the respective state and local air agencies. However, EPA also retains the concurrent authority to enforce the standards.
All notifications, applications, reports, and other correspondence required pursuant to the delegated standard must be submitted to the following address:
Missouri Department of Natural Resources, Air Pollution Control Program, PO Box 176, Jefferson City, Missouri 65102-0176.
Duplicates of required documents must also continue to be submitted to the EPA Regional Office at the following address:
Environmental Protection Agency
Air Permitting and Compliance Branch
11201 Renner Road
Lenexa, Kansas 66219
What has been delegated?
Tables I, II, and III below list the delegated standards. Each item listed in the Subpart column has two relevant dates listed in each column for the state. The first date in each block is the reference date to the CFR contained in the state rule. In general, the state or local agency has adopted the applicable standard through the date as noted in the table. The second date is the most recent effective date of the state agency rule for which the EPA has granted the delegation. This table specifically addresses revisions to the table for Missouri. If there are no dates listed in the delegation table, the state has not accepted delegation of the standard and implementation of those standards reside with EPA.
What has not been delegated?
- The EPA regulations effective after the first date specified in each block have not been delegated, and authority for implementation of these regulations is retained solely by EPA.
- In some cases, the standards themselves specify that specific provisions cannot be delegated. In such cases, a specific section of the standard details what authorities can and cannot be delegated. You should review the applicable standard in the CFR for this information.
- In some cases, the state rules do not adopt the Federal standard in its entirety. Each state rule (available from the respective agency) should be consulted for specific information.
- In some cases, the existing delegation agreement between the EPA and Missouri limits the scope of the delegated standards.
- With respect to 40 CFR part 63, subpart A, General Provisions, EPA has determined that sections 63.6(g), 63.6(h)(9), 63.7(e)(2)(ii) and (f), 63.8(f), and 63.10(f) cannot be delegated. Additional information is contained in 40 CFR § 63.91(g)(2).
Table I. Delegation of Authority-Part 6o NSPS-Missouri
| Sub-Part | Source Category | State of Missouri |
|---|---|---|
A | General Provisions | 7/1/24 9/30/25 Except 60.4; 60.9; and 60.10 |
D | Fossil-Fuel Fired Steam Generators for Which Construction is Commenced After August 17, 1971 | 7/1/24 9/30/25 |
Da | Electric Utility Steam Generating Units for Which Construction is Commenced After September 18, 1978. | 7/1/24 9/30/25 |
Db | Industrial-Commercial-Institutional Steam Generating Units | 7/1/24 9/30/25 |
Dc | Small Industrial-Commercial-Institutional Steam Generating Units | 7/1/24 9/30/25 |
E | Incinerators | 7/1/24 9/30/25 |
Ea | Municipal Waste Combustors for Which Construction is Commenced After December 20, 1989, and on or before September 20 1994. | 7/1/24 9/30/25 |
Eb | Large Municipal Waste Combustors for Which Construction is Commenced after September 20, 1994, or for Which Modification or Reconstruction is Commenced After June 19, 1996. | 7/1/24 9/30/25 |
| Ec | Hospital/Medical/Infectious Waste Incinerators for Which Construction Commenced after June 20, 1996. | 7/1/24 9/30/25 |
| F | Portland Cement Plants | 7/1/24 9/30/25 |
| G | Nitric Acid Plants | 7/1/24 9/30/25 |
| Ga | Nitric Acid Plants for Which Construction, Reconstruction, or Modification Commenced After October 14, 2011. | 7/1/24 9/30/25 |
| H | Sulfuric Acid Plants | 7/1/24 9/30/25 |
| I | Hot Mix Asphalt Facilities | 7/1/24 9/30/25 |
| J | Petroleum Refineries | 7/1/24 9/30/25 |
| Ja | Standards of Performance for Petroleum Refineries for Which Construction, Reconstruction, or Modification Commenced After May 14, 2007. | 7/1/24 9/30/25 |
| K | Storage Vessels for Petroleum Liquids for Which Construction, Reconstruction, or Modification Commenced After June 11, 1973, and Prior to May 19, 1978. | 7/1/24 9/30/25 |
| Ka | Storage Vessels for Petroleum Liquids for Which Construction, Reconstruction, or Modification Commenced After May 18, 1978, and Prior to July 23, 1984. | 7/1/24 9/30/25 |
| Kb | Volatile Organic Liquid Storage Vessels (including Petroleum Liquid Storage Vessels) for Which Construction, Reconstruction, or Modification Commenced After July 23, 1984. | 7/1/24 9/30/25 |
| L | Secondary Lead Smelters | 7/1/24 9/30/25 |
| M | Secondary Brass and Bronze Production Plants | 7/1/24 9/30/25 |
| N | Basic Oxygen Process Furnaces for Which Construction is Commenced After June 11, 1973 | 7/1/24 9/30/25 |
| Na | Basic Oxygen Process Steelmaking Facilities for Which Construction is Commenced After January 20, 1983 | 7/1/24 9/30/25 |
| O | Sewage Treatment Plants | 7/1/24 9/30/25 |
| P | Primary Copper Smelters | 7/1/24 9/30/25 |
| Q | Primary Zinc Smelters | 7/1/24 9/30/25 |
| R | Primary Lead Smelters | 7/1/24 9/30/25 |
| S | Primary Aluminum Reduction Plants | 7/1/24 9/30/25 |
| T | Phosphate Fertilizer Industry: Wet Process Phosphoric Acid Plants | 7/1/24 9/30/25 |
| U | Phosphate Fertilizer Industry: Superphosphoric Acid Plants | 7/1/24 9/30/25 |
| V | Phosphate Fertilizer Industry: Diammonium Phosphate Plants | 7/1/24 9/30/25 |
| W | Phosphate Fertilizer Industry: Triple Superphosphate Plants | 7/1/24 9/30/25 |
| X | Phosphate Fertilizer Industry: Granular Triple Superphosphate Storage Facilities | 7/1/24 9/30/25 |
| Y | Coal Preparation Plants | 7/1/24 9/30/25 |
| Z | Ferroalloy Production Facilities | 7/1/24 9/30/25 |
| AA | Steel Plants: Electric Arc Furnaces Constructed After October 21, 1974, and on or Before August 17, 1983 | 7/1/24 9/30/25 |
| AAa | Steel Plants: Electric Arc Furnaces and Argon-Oxygen Decarburization Vessels Constructed After August 17, 1983 | 7/1/24 9/30/25 |
| BB | Kraft Pulp Mills | 7/1/24 9/30/25 |
| BBa | Kraft Pulp Mill Affected Sources for Which Construction, Reconstruction, or Modification Commenced After May 23, 2013 | 7/1/24 9/30/25 |
| CC | Glass Manufacturing Plants | 7/1/24 9/30/25 |
| DD | Grain Elevators | 7/1/24 9/30/25 |
| EE | Surface Coating of Metal Furniture | 7/1/24 9/30/25 |
| GG | Stationary Gas Turbines | 7/1/24 9/30/25 |
| HH | Lime Manufacturing Plants | 7/1/24 9/30/25 |
| KK | Lead-Acid Battery Manufacturing Plants | 7/1/24 9/30/25 |
| LL | Metallic Mineral Processing Plants | 7/1/24 9/30/25 |
| MM | Automobile and Light Duty Truck Surface Coating Operations | 7/1/24 9/30/25 |
| MMa | Standards of Performance for Automobile and Light Duty Truck Surface Coating Operations for Which Construction, Modification, or Reconstruction Commenced After October 5, 1979, and On or Before May 18, 2022. | 7/1/24 9/30/25 |
| NN | Phosphate Rock Plants | 7/1/24 9/30/25 |
| PP | Ammonium Sulfate Manufacture | 7/1/24 9/30/25 |
| Graphic Arts Industry: Publication Rotogravure Printing | 7/1/24 9/30/25 | |
| RR | Pressure Sensitive Tape and Label Surface Coating Operations | 7/1/24 9/30/25 |
| SS | Industrial Surface Coating: Large Appliances | 7/1/24 9/30/25 |
| TT | Metal Coil Surface Coating | 7/1/24 9/30/25 |
| UU | Asphalt Processing and Asphalt Roofing Manufacture | 7/1/24 9/30/25 |
| VV | Equipment Leaks of VOC in the Synthetic Organic Chemicals Manufacturing Industry | 7/1/24 9/30/25 |
| V Va | Equipment Leaks of VOC in the Synthetic Organic Chemicals Manufacturing Industry for Which Construction, Reconstruction, or Modification Commenced After November 7, 2006 | 7/1/24 9/30/25 |
| WW | Beverage Can Surface Coating Industry | 7/1/24 9/30/25 |
| XX | Bulk Gasoline Terminals | 7/1/24 9/30/25 |
| AAA | New Residential Wood Heaters | |
| BBB | Rubber Tire Manufacturing Industry | 7/1/24 9/30/25 |
| DDD | Volatile Organic Compound (VOC) Emissions from the Polymer Manufacturing Industry | 7/1/24 9/30/25 |
| FFF | Flexible Vinyl and Urethane Coating and Printing | 7/1/24 9/30/25 |
| GGG | Equipment Leaks of VOC in Petroleum Refineries | 7/1/24 9/30/25 |
| GGGa | Equipment Leaks of VOC in Petroleum Refineries for Which Construction, Reconstruction, or Modification Commenced After November 7, 2006 | 7/1/24 9/30/25 |
| HHH | Synthetic Fiber Production Facilities | 7/1/24 9/30/25 |
| III | Volatile Organic Compound (VOC) Emissions From the Synthetic Organic Chemical Manufacturing Industry (SOCMI) AIR Oxidation Unit Processes | 7/1/24 9/30/25 |
| JJJ | Petroleum Dry Cleaners | 7/1/24 9/30/25 |
| KKK | Equipment Leaks of VOC from Onshore Natural Gas Processing Plants | 7/1/24 9/30/25 |
| LLL | Onshore Natural Gas Processing: SO2 Emissions | 7/1/24 9/30/25 |
| NNN | Volatile Organic Compound (VOC) Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) Distillation Operations | 7/1/24 9/30/25 |
| OOO | Nonmetallic Mineral Processing Plants | 7/1/24 9/30/25 |
| PPP | Wool Fiberglass Insulation Manufacturing Plants | 7/1/24 9/30/25 |
| QQQ | VOC Emissions from Petroleum Refinery Wastewater Systems | 7/1/24 9/30/25 |
| RRR | Volatile Organic Compound Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) Reactor Processes | 7/1/24 9/30/25 |
| SSS | Magnetic Tape Coating Facilities | 7/1/24 9/30/25 |
| TTT | Industrial Surface Coating: Surface Coating of Plastic Parts for Business Machines | 7/1/24 9/30/25 |
| UUU | Calciners and Dryers in Mineral Industries | 7/1/24 9/30/25 |
| VVV | Polymeric Coating of Supporting Substrates Facilities | 7/1/24 9/30/25 |
| WWW | Municipal Solid Waste Landfills | 7/1/24 9/30/25 |
| XXX | Municipal Solid Waste Landfills That Commenced Construction, Reconstruction, or Modification After July 17, 2014 | 7/1/24 9/30/25 |
| AAAA | Small Municipal Waste Combustion Units for Which Construction is Commenced After August 30, 1999 or for Which Modification or Reconstruction is Commenced After June 6, 2001 | 7/1/24 9/30/25 |
| CCCC | Commercial and Industrial Solid Waste Incineration Units for Which Construction is Commenced After November 30, 1999 or for Which Modification or Reconstruction is Commenced on or After June 1, 2001 | 7/1/24 9/30/25 |
| DDDD | Commercial and Industrial Solid Waste Incineration Units that Commenced Construction On or Before November 30, 1999 | |
| EEEE | Other Solid Waste Incineration Units for Which Construction Commenced After December 9, 2004 or Modification or Reconstruction Commenced On or After June 16, 2006 | 7/1/24 9/30/25 |
| FFFF | Other Solid Waste Incineration Units that Commenced Construction On or Before December 9, 2004 | |
| IIII | Stationary Compression Ignition Internal Combustion Engines | 7/1/24 9/30/25 |
| JJJJ | Stationary Spark Ignition Internal Combustion Engines | 7/1/24 9/30/25 |
| KKKK | Stationary Combustion Turbines | 7/1/24 9/30/25 |
| LLLL | New Sewage Sludge Incinerator Units | 7/1/24 9/30/25 |
| OOOO | Crude Oil and Natural Gas Production, Transmission and Distribution | 7/1/24 9/30/25 |
| OOOOa | Crude Oil and Natural Gas Production, Transmission and Distribution for which Construction, Reconstruction, or Modification Commenced After September 18, 2015 | 7/1/24 9/30/25 |
| QQQQ | New Residential Hydronic Heaters and Forced Air Furnaces | |
| TTTT | Greenhouse Gas Emissions for Electric Generating Units |
Table II. Delegation of Authority-Part 61 NESHAP-Missouri
| Sub-Part | Source Category | State of Missouri |
|---|---|---|
A | General Provisions | 7/1/24 9/30/25 Except 61.04, 61.16 and 61.17 |
B | Radon Emissions from Underground Uranium Mines. | Not delegable |
C | Beryllium | 7/1/24 9/30/25 |
D | Beryllium Rocket Motor Firing | 7/1/24 9/30/25 |
| E | Mercury | 7/1/24 9/30/25 |
F | Vinyl Chloride | 7/1/24 9/30/25 |
| J | Equipment Leaks (Fugitive Emission Sources) of Benzene | 7/1/24 9/30/25 |
| L | Benzene Emissions from Coke By-Product Recovery Plants | 7/1/24 9/30/25 |
| M | Asbestos | 7/1/24 9/30/25 |
| N | Inorganic Arsenic Emissions from Glass Manufacturing Plants | 7/1/24 9/30/25 |
| O | Inorganic Arsenic Emissions From Primary Copper Smelters | 7/1/24 9/30/25 |
| P | Inorganic Arsenic Emissions From Arsenic Trioxide and Metallic Arsenic Production Facilities | 7/1/24 9/30/25 |
| Q | Radon Emissions From Department of Energy Facilities | Not delegable |
| R | Radon Emissions From Phosphogypsum Stacks | Not delegable |
| T | Radon Emissions From the Disposal of Uranium Mill Tailings | Not delegable |
| V | Equipment Leaks (Fugitive Emission Sources) | 7/1/24 9/30/25 |
| W | Radon Emissions From Operating Mill Tailings | Not delegable |
| Y | Benzene Emissions From Benzene Storage Vessels | 7/1/24 9/30/25 |
| BB | Benzene Emissions From Benzene Transfer Operations | 7/1/24 9/30/25 |
| FF | Benzene Waste Operations | 7/1/24 9/30/25 |
Table III. Delegation of Authority-Part 63 NESHAP-Missouri
| Sub-Part | Source Category | State of Missouri |
|---|---|---|
A | General Provisions | 7/1/24 9/30/25 Except 63.13 & 63.15(a)(2) |
| F | Organic Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry. | 7/1/24 9/30/25 |
| G | Organic Hazardous Air Pollutants From the Synthetic Organic Chemical Manufacturing Industry for Process Vents, Storage Vessels, Transfer Operations, and Wastewater. | 7/1/24 9/30/25 |
| H | Organic Hazardous Air Pollutants for Equipment Leaks | 7/1/24 9/30/25 |
| I | Organic Hazardous Air Pollutants for Certain Processes Subject to the Negotiated Regulation for Equipment Leaks | 7/1/24 9/30/25 |
| J | Polyvinyl Chloride and Copolymers Production | |
| L | Coke Oven Batteries | 7/1/24 9/30/25 |
| M | National Perchloroethylene Air Emission Standards for Dry Cleaning Facilities | 7/1/24 9/30/25 |
| N | Chromium Emissions From Hard and Decorative Chromium Electroplating and Chromium Anodizing Tanks | 7/1/24 9/30/25 |
| O | Ethylene Oxide Emissions Standards for Sterilization Facilities | 7/1/24 9/30/25 |
| Q | Industrial Process Cooling Towers | 7/1/24 9/30/25 |
| R | Gasoline Distribution Facilities (Bulk Gasoline Terminals and Pipeline Breakout Stations) | 7/1/24 9/30/25 |
| S | Pulp and Paper Industry | 7/1/24 9/30/25 |
| T | Halogenated Solvent Cleaning | 7/1/24 9/30/25 |
| U | Polymers and Resins Group I | 7/1/24 9/30/25 |
| W | Epoxy Resins Production and Non-Nylon Polyamides Production | 7/1/24 9/30/25 |
| X | Secondary Lead Smelting | 7/1/24 9/30/25 |
| Y | Marine Tank Vessel Loading Operations | 7/1/24 9/30/25 |
| AA/BB | Phosphoric Acid Manufacturing Plants/ Phosphate Fertilizers Production Plants | 7/1/24 9/30/25 |
| CC | Petroleum Refineries | 7/1/24 9/30/25 |
| DD | Off-Site Waste and Recovery Operations | 7/1/24 9/30/25 |
| EE | Magnetic Tape Manufacturing Operations | 7/1/24 9/30/25 |
| GG | Aerospace Industry Surface Coating Manufacturing and Rework Facilities | 7/1/24 9/30/25 |
| HH | Oil and Natural Gas Production Facilities | 7/1/24 9/30/25 |
| II | Shipbuilding and Ship Repair (Surface Coating) | 7/1/24 9/30/25 |
| JJ | Wood Furniture Manufacturing Operations | 7/1/24 9/30/25 |
| KK | Printing and Publishing Industry | 7/1/24 9/30/25 |
| LL | Primary Aluminum Reduction Plants | 7/1/24 9/30/25 |
| MM | Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-Along Semichemical Pulp Mills | 7/1/18 2/28/19 |
| NN | Wool Fiberglass Mfg (area sources) | |
| OO | Tanks-Level 1 | 7/1/24 9/30/25 |
| PP | Containers | 7/1/24 9/30/25 |
| Surface Impoundments | 7/1/24 9/30/25 | |
| RR | Individual Drain Systems | 7/1/24 9/30/25 |
| SS | Closed Vent Systems, Control Devices, Recovery Devices and Routing to a Fuel Gas System or a Process | 7/1/24 9/30/25 |
| TT | Equipment Leaks - Control Level 1 Standards | 7/1/24 9/30/25 |
| UU | Equipment Leaks - Control Level 2 Standards | 7/1/24 9/30/25 |
| VV | Oil-Water Separators and Organic-Water Separators | 7/1/24 9/30/25 |
| WW | Storage Vessel (Tanks) - Control Level 2 | 7/1/24 9/30/25 |
| XX | Ethylene Manufacturing Process Units: Heat Exchange Systems and Waste Operations | 7/1/24 9/30/25 |
| YY | Generic Maximum Achievable Control Technology Standards | 7/1/24 9/30/25 |
| CCC | Steel Pickling-HCL Process Facilities and Hydrochloric Acid Regeneration Plants | 7/1/24 9/30/25 |
| DDD | Mineral Wool Production | 7/1/24 9/30/25 |
| EEE | Hazardous Waste Combustors | 7/1/24 9/30/25 |
| GGG | Pharmaceutical Production | 7/1/24 9/30/25 |
| HHH | Natural Gas Transmission and Storage Facilities | 7/1/24 9/30/25 |
| III | Flexible Polyurethane Foam Production | 7/1/24 9/30/25 |
| JJJ | Polymers and Resins Group IV | 7/1/24 9/30/25 |
| LLL | Portland Cement Manufacturing Industry | 7/1/24 9/30/25 |
| MMM | Pesticide Active Ingredient Production | 7/1/24 9/30/25 |
| NNN | Wool Fiberglass Manufacturing | 7/1/24 9/30/25 |
| OOO | Manufacture of Amino/ Phenolic Resins | 7/1/24 9/30/25 |
| PPP | Polyether Polyols Production | 7/1/24 9/30/25 |
| QQQ | Primary Copper Smelting | 7/1/24 9/30/25 |
| RRR | Secondary Aluminum Production | 7/1/24 9/30/25 |
| TTT | Primary Lead Smelting | 7/1/24 9/30/25 |
| UUU | Petroleum Refineries | 7/1/24 9/30/25 |
| VVV | Publicly Owned Treatment Works | 7/1/24 9/30/25 |
| XXX | Ferroalloys Production | 7/1/24 9/30/25 |
| AAAA | Municipal Solid Waste Landfills | 7/1/24 9/30/25 |
| CCCC | Manufacturing of Nutritional Yeast | 7/1/24 9/30/25 |
| DDDD | Plywood and Composite Wood Products | 7/1/18 2/28/197/1/24 9/30/25 |
| EEEE | Organic Liquids Distribution (Non-Gasoline) | 7/1/24 9/30/25 |
| FFFF | Misc. Organic Chemical Manufacturing | 7/1/24 9/30/25 |
| GGGG | Solvent Extraction for Vegetable Oil Production | 7/1/24 9/30/25 |
| HHHH | Wet Formed Fiberglass Mat Production | 7/1/24 9/30/25 |
| IIII | Surface Coating of Automobiles and Light-Duty Trucks | 7/1/24 9/30/25 |
| JJJJ | Paper and Other Web Coating | 7/1/24 9/30/25 |
| KKKK | Surface Coating of Metal Cans | 7/1/24 9/30/25 |
| MMMM | Surface Coating of Misc. Metal Parts and Products | 7/1/24 9/30/25 |
| NNNN | Surface Coating of Large Appliances | 7/1/24 9/30/25 |
| OOOO | Printing, Coating and Dyeing of Fabrics and Other Textiles | 7/1/24 9/30/25 |
| PPPP | Surface Coating of Plastic Parts and Products | 7/1/24 9/30/25 |
| QQQQ | Surface Coating of Wood Building Products | 7/1/24 9/30/25 |
| RRRR | Surface Coating of Metal Furniture | 7/1/24 9/30/25 |
| SSSS | Surface Coating of Metal Coil | 7/1/24 9/30/25 |
| TTTT | Leather Finishing Operations | 7/1/24 9/30/25 |
| UUUU | Cellulose Products Manufacturing | 7/1/24 9/30/25 |
| VVVV | Boat Manufacturing | 7/1/24 9/30/25 |
| WWWW | Reinforced Plastic Composites Production | 7/1/24 9/30/25 |
| XXXX | Rubber Tire Manufacturing | 7/1/24 9/30/25 |
| YYYY | Stationary Combustion Turbines | 7/1/24 9/30/25 |
| ZZZZ | Stationary Reciprocating Internal Combustion Engines | 7/1/24 9/30/25 *only major sources |
| AAAAA | Lime Manufacturing Plants | 7/1/24 9/30/25 |
| BBBBB | Semiconductor Manufacturing | 7/1/24 9/30/25 |
| CCCCC | Coke Ovens: Pushing, Quenching, and Battery Stacks | 7/1/24 9/30/25 |
| DDDDD | Industrial, Commercial and Institutional Boilers and Process Heaters | 7/1/24 9/30/25 |
| EEEEE | Iron and Steel Foundries | 7/1/24 9/30/25 |
| FFFFF | Integrated Iron and Steel Manufacturing Facilities | 7/1/24 9/30/25 |
| GGGGG | Site Remediation | 7/1/24 9/30/25 |
| HHHHH | Misc. Coating Manufacturing | 7/1/24 9/30/25 |
| IIIII | Mercury Cell Chlor-Alkali Plants | 7/1/24 9/30/25 |
| JJJJJ | Brick and Structural Clay Products Manufacturing | 7/1/24 9/30/25 |
| KKKKK | Clay Ceramics Manufacturing | 7/1/24 9/30/25 |
| LLLLL | Asphalt Processing and Asphalt Roofing Manufacturing | 7/1/24 9/30/25 |
| MMMMM | Flexible Poly-urethane Foam Fabrication Operation | 7/1/24 9/30/25 |
| NNNNN | Hydrochloric Acid Production | 7/1/24 9/30/25 |
| PPPPP | Engine Test Cells/Stands | 7/1/24 9/30/25 |
| QQQQQ | Friction Materials Manufacturing Facilities | 7/1/24 9/30/25 |
| RRRRR | Taconite Iron Ore Processing | 7/1/24 9/30/25 |
| SSSSS | Refractory Products Manufacturing | 7/1/24 9/30/25 |
| TTTTT | Primary Magnesium Refining | 7/1/24 9/30/25 |
| UUUUU | Coal and Oil-fired Electric Utility Steam Generating Units | 7/1/24 9/30/25 |
| WWWWW | Hospital Ethylene Oxide Sterilizer | 7/1/24 9/30/25* |
| YYYYY | Electric Arc Furnace Steelmaking Facilities or Stainless and Non-stainless Steel Manufacturing (EAFs) | 7/1/24 9/30/25* |
| ZZZZZ | Iron and Steel Foundries Area Sources | 7/1/24 9/30/25* |
| BBBBBB | Gasoline Distribution Bulk Terminal, Bulk Plant and Pipeline Facilities | 7/1/24 9/30/25* |
| CCCCCC | Gasoline Distribution, Gasoline Dispensing Facilities | 7/1/24 9/30/25* |
| DDDDDD | PVC & Copolymer Production | 7/1/24 9/30/25* |
| EEEEEE | Primary Copper Smelting | 7/1/24 9/30/25* |
| FFFFFF | Secondary Copper Smelting | 7/1/24 9/30/25* |
| GGGGGG | Primary Nonferrous Metal | 7/1/24 9/30/25* |
| HHHHHH | Paint Stripping Operations, Misc. Surface Coating, Autobody Refinishing | 7/1/24 9/30/25* |
| JJJJJJ | Industrial, Commercial, and Institutional Boilers | 7/1/24 9/30/25* |
| LLLLLL | Acrylic/Modacrylic Fibers Production | 7/1/24 9/30/25* |
| MMMMMM | Carbon Black Production | 7/1/24 9/30/25* |
| NNNNNN | Chromium Compounds | 7/1/24 9/30/25* |
| OOOOOO | Flexible Polyurethane Foam Fabrication and Production | 7/1/24 9/30/25* |
| PPPPPP | Lead Acid Battery Manufacturing | 7/1/24 9/30/25* |
| QQQQQQ | Wood Preserving | 7/1/18 2/28/19 * |
| RRRRRR | Clay Ceramics Manufacturing | 7/1/24 9/30/25* |
| SSSSSS | Pressed & Blown Glass Manufacturing | 7/1/24 9/30/25* |
| TTTTTT | Secondary Non-Ferrous Metals | 7/1/24 9/30/25* |
| VVVVVV | Chemical Manufacturing Area Sources | 7/1/24 9/30/25* |
| WWWWWW | Plating and Polishing | 7/1/24 9/30/25* |
| XXXXXX | Metal Fabrication and Finishing | 7/1/24 9/30/25* |
| YYYYYY | Ferroalloys Production | 7/1/24 9/30/25* |
| ZZZZZZ | Area Source Standards for Aluminum, Copper and Other Nonferrous Foundries | 7/1/24 9/30/25* |
| AAAAAAA | Asphalt Processing and Asphalt Roofing Manufacturing | 7/1/24 9/30/25* |
| BBBBBBB | Chemical Preparations Industry | 7/1/24 9/30/25* |
| CCCCCCC | Paints and Allied Products Manufacturing | 7/1/24 9/30/25* |
| DDDDDDD | Prepared Foods Manufacturing | 7/1/24 9/30/25* |
| EEEEEEE | Gold Mine Ore Processing and Production Area Source Category | 7/1/24 9/30/25* |
| HHHHHHH | Polyvinyl Chloride and Copolymers Production | 7/1/24 9/30/25 |
*At this time, Missouri is temporarily not accepting delegation for area source NESHAP requirements (40 CFR Part 63, Subparts WWWWW-EEEEEEE) within the State of Missouri as described in an February 19, 2019 letter from MDNR to the U.S. EPA, Region 7.