EPA Determinations of Compliance and Applicability under CAA 111, 112, and 129 Dashboard
Contains Determinations Signed After May 2019
This page contains responses issued by EPA on applicability and compliance issues associated with the New Source Performance Standards (NSPS) and National Emissions Standards for Hazardous Air Pollutants (NESHAP) under Clean Air Act § 111, 112, and 129. Specifically, this page only includes responses issued since May 2019. All previously issued responses are located in the Applicability Determination Index.
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| Facility Name | Title | Affected Subpart | Link to Responses |
|---|---|---|---|
| Twin Landfill Corporation, Milner Landfill | Applicability Determination for Municipal Solid Waste Landfills | Part 60, WWW: Municipal Solid Waste Landfills | 2020-07-28 |
| King Systems Corporation | Applicability Determination for Surface Coating Of Miscellaneous Plastic Parts and Products | Part 63, PPPP: Surface Coating of Miscellaneous Plastic Parts and Products | 2020-06-16 |
| Westvaco Facility | Applicability Determination for Lime Manufacturing Plants | Part 63, AAAAA: Lime Manufacturing Plants | 2021-01-15 |
| HollyFrontier El Dorado Refining | Other Request- Alternating Monitoring Request and Site-Specific NOx Emission Limit | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2019-05-22 |
| Providence Kodiak | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2020-09-23 |
| Wake County Solid Waste Management Division - North Wake County Landfill | Alternative Monitoring for Municipal Solid Waste Landfills | Part 60, WWW: Municipal Solid Waste Landfills | 2020-07-23 |
| Metropolitan Sewerage District of Buncombe County, NC | Alternative Monitoring for Sewage Sludge Incineration Units | Part 60, MMMM: Emission Guidelines and Compliance Times for Existing Sewage Sludge Incineration Units | 2021-03-05 |
| AMES Copper Group, Formerly IMC Metals | Applicability Determination for Secondary Copper Smelting Area Sources | Part 63, FFFFFF: Secondary Copper Smelting Area Sources | 2020-08-14 |
| Anchorage Regional Landfill | Other Request-Alternative Remedy and Timeline | Part 60, WWW: Municipal Solid Waste Landfills | 2020-09-01 |
| Jackson Cleaners | Applicability Determination for Perchloroethylene Dry Cleaning Facilities | Part 63, M: Perc Dry Cleaning | 2020-08-06 |
| Dow Chemical-Freeport, TX | Alternative Monitoring for Polymers and Resins | Part 63, JJJ: Polymers and Resins | 2025-01-08 |
| Domtar AW LLC-Ashdown AR | Applicability Determination for Kraft Pulp Mills | Part 60, BB: Kraft Pulp Mills ; Part 63, S: Pulp and Paper Production | 2025-03-10 |
| Motiva Enterprises-Port Arthur, TX Refinery | Other Request- Revised Alternative Monitoring Plan | Part 63, UUU: Petroleum Refineries: Catalytic Cracking Units, Catalytic Reforming Units, and Sulfur Recovery Units | 2021-04-05 |
| Trecora Chemical-Pasadena, TX | Alternative Monitoring for Synthetic Organic Chemical Manufacturing Industry (SOCMI) Distillation Operations | Part 60, NNN: SOCMI Distillation Operations | 2020-08-17 |
| Vicor Corporation | Applicability Determination for Nine Metal Fabrication and Finishing Source Categories | Part 63, XXXXXX: NESHAP Area Source Standards for Nine Metal Fabrication and Finishing Source Categories | 2020-04-16 |
| Anchorage Regional Landfill | Other Request- Alternative Remedy and Timeline | Part 60, WWW: Municipal Solid Waste Landfills | 2020-11-10 |
| Anchorage Regional Landfill | Alternative Monitoring for Municipal Solid Waste Landfills | Part 60, WWW: Municipal Solid Waste Landfills | 2020-10-20 |
| Manchester Wastewater Treatment Plant | Alternative Test Method for Sewage Sludge Incinerator | Part 62, LLL: Federal Plan Requirements for Sewage Sludge Incineration Units Constructed On or Before October 14, 2010 | 2020-09-14 |
| Flint Hills Resources Pine Bend Refinery | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2020-10-13 |
| Flint Hills Resources Pine Bend Refinery | Alternative Test Method for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2020-12-22 |
| Ascend Performance Materials Operations, LLC, Pensacola, Florida; Pensacola Adipic Acid Plant | Applicability Determination for Nitric Acid Plant | Part 60, Ga: Nitric Acid Plants (Post 10/14/11) | 2020-11-06 |
| GVEA Healy | Alternative Test Method for Coal and Oil-Fired Electric Utility Steam Generating Units | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2020-09-29 |
| Mississippi Lime | Alternative Monitoring for Lime Manufacturing Plants | Part 63, AAAAA: Lime Manufacturing Plants | 2021-01-11 |
| WestRock CP, LLC - Stevenson Mill, Stevenson, Alabama | Alternative Monitoring for Industrial Stream Generating Units | Part 60, Db: Indust.-Comm.-Inst. Steam Gen. Units | 2020-10-22 |
| Westrock Evadale Mill | Performance Test Extension for Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-Alone Semichemical Pulp Mills | Part 63, MM: Pulp Mill Chemical Recovery Combustion Sources | 2020-10-01 |
| Mainspring Energy | Regulatory Interpretation for Stationary Compression Ignition Internal Combustion Engines | Part 60, IIII: Stationary Compression Ignition Internal Combustion Engines ; Part 60, JJJJ: Stationary Spark Ignition Internal Combustion Engines | 2021-01-19 |
| Citation Oil and Gas (Holland & Hart LLP) | Applicability Determination for Stationary Reciprocating Internal Combustion Engines | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines | 2021-02-11 |
| KMTEX LLC | Alternative Monitoring for VOC Emissions from SOCMI Distillation Operations | Part 60, NNN: SOCMI Distillation Operations ; Part 60, RRR: VOC Emissions from SOCMI Reactor Processes | 2020-12-02 |
| Marathon Petroleum Garyville LA Refinery | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2020-12-23 |
| Shelton Services | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-01-19 |
| Synergy Solutions of Crisp County, LP | Applicability Determination for Small Municipal Waste Combustion Units | Part 60, AAAA: Small Municipal Waste Combustors (Post 8/30/99) | 2021-01-15 |
| U.S. Air Force Oliktok Alaska Incinerator | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2020-08-20 |
| Lhoist North America of Alabama, LLC - Montevallo Plant | Alternative Test Method for Lime Manufacturing Plants | Part 63, AAAAA: Lime Manufacturing Plants | 2021-03-03 |
| Ecoremedy | Applicability Determination for New Sewage Sludge Incineration Units | Part 60, LLLL: Sewage Sludge Incineration Units | 2021-09-09 |
| Sewerage & Water Board of New Orleans (SWBNO)-East Bank Sewage Treatment Plant | Performance Testing Extension Request and Force Majeure Claim | Part 62, LLL: Federal Plan Requirements for Sewage Sludge Incineration Units Constructed On or Before October 14, 2010 | 2020-11-20 |
| Barry Industries, Attleboro, MA | Performance Test Waiver for Beryllium | Part 61, C: Beryllium | 2020-12-02 |
| ExxonMobil Beaumont Refinery-Flare Vent Gas Composition Monitoring AMP | Alternative Monitoring for Petroleum Refineries | Part 63, CC: Petroleum Refineries | 2022-11-09 |
| Porter Auto Body | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2020-12-14 |
| Gerber Collision and Glass | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2020-12-14 |
| Gingerminion DBA Colors on Parade | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2020-12-14 |
| Tesla | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2020-12-14 |
| Palisades Nuclear Station | Applicability Determination for Gasoline Dispensing Facilities | Part 63, CCCCCC: Gasoline Dispensing Facilities | 2021-02-02 |
| Lhoist North America - Montevallo Plant | Technical Compliance Extension for Lime Manufacturing Plants | Part 63, AAAAA: Lime Manufacturing Plants | 2021-04-09 |
| City of Selawik WTP | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2021-03-15 |
| Florida Department of Environmental Protection | Regulatory Interpretation for Asbestos | Part 61, M: Asbestos | 2021-04-28 |
| International Paper- New Bern Mill | Alternative Monitoring for Pulp and Paper Industry | Part 63, S: Pulp and Paper Production | 2021-06-25 |
| Hartford Finishing | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-02-16 |
| Marathon St. Paul Park | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-06-29 |
| Foley Cellulose, LLC | Alternative Monitoring for Industrial, Commercial, and Institutional Boilers and Process Heaters | Part 60, Db: Indust.-Comm.-Inst. Steam Gen. Units ; Part 63, DDDDD: Industrial, Commercial, and Institutional Boilers and Process Heaters | 2021-03-19 |
| BP Cherry Point | Regulatory Interpretation of Equipment Leaks of VOC in the Synthetic Organic Chemicals Manufacturing Industry | Part 60, VVa: Equipment Leaks of VOC in Synthetic Organic Chemicals Mfg Industry (Post 11/7/2006) ; Part 63, CC: Petroleum Refineries | 2021-06-07 |
| Perry and Terry Autobody | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-02-24 |
| BASF Freeport | Performance Test Waiver for Volatile Organic Compound (VOC) Emissions From Synthetic Organic Chemical Manufacturing Industry (SOCMI) Distillation Operations | Part 60, NNN: SOCMI Distillation Operations | 2021-03-09 |
| Arapahoe Collision and Mechanical | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-03-16 |
| Sewerage & Water Board of New Orleans | Performance Test Extension | Part 62, LLL: Federal Plan Requirements for Sewage Sludge Incineration Units Constructed On or Before October 14, 2010 | 2020-11-20 |
| Colorado and Fitzsimons Auto Body | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-03-16 |
| EPA NESHAP Residential Building Exemption Clarification Request | Applicability Determination for Asbestos | Part 61, M: Asbestos | 2021-05-26 |
| CEMEX Construction Materials Atlantic, Knoxville Cement Plant | Applicability Determination for Coal Preparation Plants | Part 60, Y: Coal Preparation Plants ; Part 63, LLL: Portland Cement Manufacturing | 2021-04-30 |
| Accurate Auto Body | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-04-08 |
| Boulder Bump Shop | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-04-08 |
| Denver Auto Body | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-04-15 |
| Complete Auto Body and Paint | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-05-05 |
| Michael's Auto Body and Glass | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-05-05 |
| Veolia WWTP Biosolids Warren Michigan Project | Applicability Determination for New Sewage Sludge Incineration Units | Part 60, LLLL: Sewage Sludge Incineration Units | 2021-10-28 |
| Nucor Steel Gallatin | Alternative Monitoring for Steel Pickling HCl Process Facilities and Hydrochloric Acid Regeneration Plants | Part 63, CCC: Steel Pickling: HCI Process & Hydrochloric Acid | 2021-10-21 |
| Covanta Haverhill | Other Request-Alternative Sampling Method | Part 60, WWW: Municipal Solid Waste Landfills | 2021-05-11 |
| Conoco Phillips Alaska Exploration Wells | Alternative Reporting Schedule for Crude Oil and Natural Gas Facilities | Part 60, OOOOa: Standards of Performance for Crude Oil and Natural Gas Facilities (after September 18, 2015) | 2021-06-28 |
| Eastman Chemical Company, Kingsport, Tennessee | Performance Test Waiver for Commercial and Industrial Solid Waste Incineration Units | Part 60, DDDD: Comm. & Indus. Solid Waste Incineration Units (Pre 11/30/99) | 2021-08-19 |
| Morehead, Kentucky Landfill | Regulatory Interpretation for Municipal Solid Waste Landfills | Part 60, WWW: Municipal Solid Waste Landfills | 2021-07-20 |
| USA DeBusk | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-04-13 |
| Chevron Salt Lake City Refinery | Performance Test Waiver for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-03-22 |
| Accoya USA, LLC | Alternative Monitoring for Equipment Leaks of VOC in the Synthetic Organic Chemicals Manufacturing Industry | Part 60, VVa: Equipment Leaks of VOC in Synthetic Organic Chemicals Mfg Industry (Post 11/7/2006) | 2021-07-09 |
| Vapor Point | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-07-09 |
| Vapor Point LLC | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-07-28 |
| Triangle Rock (A Subsidiary of Vulcan Materials Company) | Applicability Determination for Nonmetallic Mineral Processing Plants | Part 60, OOO: Nonmetallic Mineral Processing | 2021-11-09 |
| Santee Cooper, Horray Generating Station | Applicability Determination for Stationary Compression Ignition Internal Combustion Engines | Part 60, IIII: Stationary Compression Ignition Internal Combustion Engines | 2021-07-30 |
| Crash Champions, multiple facilities in Colorado | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2021-06-23 |
| U.S. Air Force Long Range Radar Station - Oliktok, Alaska | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2021-09-30 |
| Vapor Point | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-09-30 |
| Sterigenics | Alternative Monitoring for Ethylene Oxide Emissions Standards for Sterilization Facilities | Part 63, O: Ethylene Oxide Emissions Standards for Sterilization Facilities | 2021-08-26 |
| City of High Point (Eastside Waste Water Treatment Plant) | Alternative Monitoring Plan for Wastewater Treatment Plant | Part 60, MMMM: Emission Guidelines and Compliance Times for Existing Sewage Sludge Incineration Units | 2022-07-22 |
| City of Greensboro (T.Z. Osborne Water Reclamation Facility) | Alternative Monitoring for Existing Sewage Sludge Incineration Units | Part 60, MMMM: Emission Guidelines and Compliance Times for Existing Sewage Sludge Incineration Units ; Part 62, LLL: Federal Plan Requirements for Sewage Sludge Incineration Units Constructed On or Before October 14, 2010 | 2022-03-15 |
| Domtar AW LLC-Ashdown, AR | Alternative Reporting Schedule for Pulp and Paper Industry | Part 63, S: Pulp and Paper Production | 2021-06-25 |
| Vapor Point-La Porte, TX | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-05-25 |
| International Paper - Columbus, MS Mill | Alternative Monitoring for Pulp and Paper Industry | Part 63, S: Pulp and Paper Production | 2021-09-29 |
| BASF Freeport, TX | Alternative Monitoring for SOCMI Air Oxidation Units and Distillation Operations | Part 60, III: SOCMI Air Oxidation Units ; Part 60, NNN: SOCMI Distillation Operations | 2021-08-17 |
| Clean Harbors Industrial Services | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-09-07 |
| Bituminous Resources, Inc., dba Hopkins County Regional Landfill | Regulatory Interpretation for MSW Landfills | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2021-11-18 |
| Holcomb Station | Performance Test Waiver for Coal- and Oil-Fired Electric Utility Steam Generating Units | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2021-10-21 |
| United Taconite LLC (Cleveland-Cliffs) | Alternative Monitoring for Taconite Iron Ore Processing | Part 63, RRRRR: Taconite Iron Ore Processing | 2021-12-28 |
| Toray Composite Materials America, Inc. | Alternative Monitoring for Asphalt Processing and Asphalt Roofing | Part 63, LLLLL: Asphalt Processing and Asphalt Roofing | 2022-02-03 |
| Westrock, Florence Mill | Alternative Monitoring for Kraft Pulp Mills | Part 60, BB: Kraft Pulp Mills | 2022-02-16 |
| Giant Cement | Alternative Monitoring for Hazardous Waste Combuster | Part 63, EEE: Hazardous Waste Combustors | 2022-08-30 |
| Mosaic Fertilizer - Faustina Plant | Alternative Monitoring for Phosphate Fertilizers Production Plants | Part 63, BB: Phosphate Fertilizer Prod. Plants | 2021-10-14 |
| U.S. Granules - Henrietta Facility | Applicability Determination for Secondary Aluminum Production | Part 63, RRR: Secondary Aluminum Production | 2022-03-25 |
| North Dade Landfill | Alternative Monitoring for Municipal Solid Waste Landfills | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2022-01-07 |
| Battery Builders Inc | Performance Test Waiver for Lead Acid Batter Manufacturing Area Sources | Part 60, KK: Lead-acid Battery Manufacture Plants ; Part 63, PPPPPP: Pollutants for Lead Acid Battery Manufacturing Area Sources | 2021-11-29 |
| Parkchester South Condominium | Applicability Determination for Crude Oil and Natural Gas Facilities | Part 60, OOOO: Standards of Performance for Crude Oil and Natural Gas Production, Transmission and Distribution ; Part 60, OOOOa: Standards of Performance for Crude Oil and Natural Gas Facilities (after September 18, 2015) | 2022-03-31 |
| Urschel Laboratories, Inc. | Alternative Monitoring for Calciners and Dryers in Mineral Industries | Part 60, UUU: Calciners and Dryers in Mineral Ind. | 2021-12-03 |
| Oxy Vinyls Houston Operations Pasadena Polyvinyl Chloride Plant | Alternative Monitoring for Polyvinyl Chloride and Copolymers Production | Part 63, HHHHHHH: Polyvinyl Chloride and Copolymer Production - Major Sources | 2021-12-06 |
| Palmetto Landfill and Recycling Center | Regulatory Interpretation for Municipal Solid Waste Landfills | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2022-02-03 |
| Total Energies-Port Arthur, TX | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2021-12-13 |
| Weld County Landfill | Performance Test Waiver for Stationary Spark Ignition Internal Combustion Engines | Part 60, JJJJ: Stationary Spark Ignition Internal Combustion Engines | 2021-12-17 |
| Timber Ridge Landfill, Richwoods, MO | Alternative Monitoring for MSWL | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2023-02-08 |
| Shuqualak Lumber Company | Alternative Monitoring for Industrial, Commercial, and Institutional Boilers and Process Heaters | Part 63, DDDDD: Industrial, Commercial, and Institutional Boilers and Process Heaters | 2024-12-05 |
| US Army Garrison Command, Ft. Knox | Regulatory Interpretation for Stationary Reciprocating Internal Combustion Engines | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines | 2022-04-27 |
| Superior Refinery | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2022-04-11 |
| St. Lucie County Landfill | Alternative Monitoring for MSW Landfill | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2022-04-20 |
| ARTESIA RENEWABLE DIESEL COMPANY LLC | Performance Test Waiver for VOC Emissions from SOCMI Distillation Operations | Part 60, NNN: SOCMI Distillation Operations ; Part 60, RRR: VOC Emissions from SOCMI Reactor Processes | 2022-08-30 |
| Marathon Petroleum Company Garyville Refinery | Alternative Monitoring Plan for Petroleum Refinery | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2022-09-07 |
| VALERO REFINING - ST CHARLES REFINERY | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2023-01-13 |
| Tampa Electric Big Bend Station | Other Request- Testing Minimum Time Notification Waiver | Part 63, YYYY: Stationary Gas Turbines | 2022-04-14 |
| EAP Ohio | Regulatory Interpretation for Crude Oil and Natural Gas Facilities | Part 60, OOOO: Standards of Performance for Crude Oil and Natural Gas Production, Transmission and Distribution ; Part 60, OOOOa: Standards of Performance for Crude Oil and Natural Gas Facilities (after September 18, 2015) | 2022-03-29 |
| Southern Earth Sciences | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries | 2022-05-23 |
| Taiga Ventures | Applicability Determination for Commercial and Industrial Solid Waste Incineration Units | Part 60, CCCC: Comm. & Indus. Solid Waste Incineration Units (Post 11/30/99) | 2022-05-26 |
| City of Greensboro (T.Z. Osborne Water Reclamation Facility) Revised AMP Submittal | Alternative Monitoring Procedure for Sewage Sludge Incineration Unit | Part 60, MMMM: Emission Guidelines and Compliance Times for Existing Sewage Sludge Incineration Units | 2022-07-22 |
| Spectro Alloys Performance Test Extension Furnace 1 Performance | Performance Test Extension for Secondary Aluminum Production | Part 63, RRR: Secondary Aluminum Production | 2022-06-07 |
| Hanes Mill Road Landfill | Other Request-Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 60, AAAA: Small Municipal Waste Combustors (Post 8/30/99) | 2022-10-25 |
| EGGER | Regulatory Interpretation for Plywood and Composite Wood Products | Part 63, DDDD: Plywood and Composite Wood Products | 2022-06-15 |
| Lynnwood Sewage Sludge Incinerator | Performance Test Extension for Existing Sewage Sludge Incineration Units | Part 62, LLL: Federal Plan Requirements for Sewage Sludge Incineration Units Constructed On or Before October 14, 2010 | 2022-05-12 |
| East Carolina Regional Solid Waste Landfill | Alternative Monitoring for MSWL | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2022-09-06 |
| East Carolina Regional Solid Waste Landfill | Other Request-Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2022-07-26 |
| XCEL ENERGY - RIVERSIDE GENERATING PLANT | Alternative Test Method for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-05-23 |
| XCEL ENERGY - HIGH BRIDGE COMBINED CYCLE | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-05-22 |
| Choctaw County Generating Plant | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2022-08-30 |
| Mosaic Fertilizer New Whales Facility | Alternative Monitoring for Phosphate Fertilizer Production Plants | Part 63, BB: Phosphate Fertilizer Prod. Plants | 2023-07-21 |
| Safe Dispose, LLC | Applicability Determination for Hospital/Medical/Infectious Waste Incinerators | Part 60, Ec: Hospital/Medical/Infectious Wast Incinerators (Post 6/20/96) | 2022-07-14 |
| DTE Gas Company, Milford Compressor Station | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-12-08 |
| DTE GAS COMPANY, WILLOW COMPRESSOR STATION | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-12-08 |
| DTE GAS COMPANY BELLE RIVER COMPRESSOR STATION | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-12-08 |
| ANR PIPELINE COMPANY - LAGRANGE COMPRESSOR STATION | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-08-25 |
| ANR PIPELINE COMPANY - SULPHER SPRINGS COMPRESSOR STATION | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-08-25 |
| Georgia Pacific Wood Products | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2022-07-26 |
| East Carolina Regional Landfill | Other Request-Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2022-10-25 |
| Kansas Department of Health and Environment | Regulatory Interpretation for Grain Elevators | Part 60, DD: Grain Elevators | 2022-08-17 |
| Transcontinental Gas Pipe Line Company, LLC (Transco) Station 110 | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2023-01-13 |
| Transcontinental Gas Pipe Line Company, LLC (Transco), Compressor Station 85 | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2023-01-18 |
| Duke Energy Florida, LLC, Citrus Combined Cycle Station | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2023-03-17 |
| Packaging Corporation of America Filer City Mill | Performance Test Waiver for Mercury | Part 61, E: Mercury | 2022-08-01 |
| Florida Power and Light | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2023-03-17 |
| Tampa Electric Company - Big Bend Station | Other Request- approval of a continuous monitoring system (CMS) plan petition | Part 63, YYYY: Stationary Gas Turbines | 2023-07-25 |
| TEXAS EASTERN TRANSMISSION - SOMERSET | Applicability Determination for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-05-23 |
| Cleveland-Cliffs Minorca Mine Inc | Alternative Monitoring Request for Taconite Iron Ore Processing Units | Part 63, RRRRR: Taconite Iron Ore Processing ; Part 60, BBa: Kraft Pulp Mill Sources (after May 23, 2013) ; Part 63, MM: Pulp Mill Chemical Recovery Combustion Sources | 2024-01-19 |
| City of High Point (Eastside Waste Water Treatment Plant) Revised AMP Resubmittal | Alternative Monitoring Procedure for Wastewater Treatment Facility | Part 60, MMMM: Emission Guidelines and Compliance Times for Existing Sewage Sludge Incineration Units | 2023-03-23 |
| PRIMARY PRODUCTS INGREDIENTS AMERICAS LLC - PRIMIENT SOUTH | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-12-08 |
| TC Energy (ANR Brownsville Compressor Station, TN) | Other Request- Approval of CMS Plan | Part 63, YYYY: Stationary Gas Turbines | 2023-03-09 |
| Consumers Energy Company - Muskegon River Compressor Station | Performance Test Extension for Stationary Gas Turbine | Part 63, YYYY: Stationary Gas Turbines | 2022-12-06 |
| Uwharrie Environmental Landfill | Alternative Monitoring for MSWL | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2023-04-24 |
| Dow Chemical Plaquemine Operations | Applicability Determination for MON | Part 63, FFFF: Miscellaneous Organic Chemical Manufacturing | 2024-03-18 |
| International Paper ORANGE MILL PLANT | Alternative Monitoring for Pulp and Paper Production | Part 63, S: Pulp and Paper Production | 2022-12-19 |
| Petro Nova Parish Holdings CAPTURE PLANT | Performance Test Extension for Stationary Gas Turbines | Part 63, A: General Provisions ; Part 63, YYYY: Stationary Gas Turbines | 2023-02-16 |
| American Environmental Inc. | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2022-06-28 |
| Gulf South Pipeline Company, LLC - McComb Compressor Station | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2025-05-19 |
| Safe Dispose, LLC (SD-27) | Applicability Determination for Hospital/Medical/Infectious Waste Incinerators | Part 60, Ec: Hospital/Medical/Infectious Wast Incinerators (Post 6/20/96) | 2023-01-19 |
| Consumers Energy Company - Muskegon River Compressor Station | Alternative Operating Limits/Monitoring for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-11-07 |
| Entergy Services LLC | Other Request-revision to your approved continuous monitoring system (CMS) plan | Part 63, YYYY: Stationary Gas Turbines | 2023-06-12 |
| Tesla Salt Lake City | Applicability Determination for Miscellaneous Coating Manufacturing | Part 63, HHHHHH: Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources | 2022-10-14 |
| DTE Marietta | Alternative Operating Limits/Monitoring for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-11-07 |
| Misc Metal Parts and Products Surface Coating Facilities | Regulatory Interpretation for NESAHP MMMM | Part 63, MMMM: Surface Coating of Miscellaneous Metal Parts and Products | 2022-11-30 |
| CITGO Corpus Christi East Refinery | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2023-03-14 |
| Carmeuse Americas - Longview | Alternative Monitoring for Lime Manufacturing Plant | Part 63, AAAAA: Lime Manufacturing Plants | 2023-06-21 |
| Capital Region Airport Authority | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2023-01-27 |
| East Carolina Regional Landfill | Other Request-Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2023-03-23 |
| Hanes Mill Road Landfill | Other Request-Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2023-03-23 |
| Safe Dispose, LLC (SD-9 & SD-21) | Applicability Determination for Hospital/Medical/Infectious Waste Incinerators | Part 60, Ec: Hospital/Medical/Infectious Wast Incinerators (Post 6/20/96) | 2023-03-23 |
| Nikaitchuq Development Site | Performance Test Waiver for Stationary Combustion Turbine | Part 60, KKKK: Standards of Performance for Stationary Combustion Turbines | 2023-01-05 |
| Pratt & Whitney 1 Aircraft Road Middletown, CT 06457 | Other Request- Petition for Operating Limitations | Part 63, YYYY: Stationary Gas Turbines | 2022-09-21 |
| Alyeska TAPS Pump Station #1 | Performance Test Extension for Stationary Combustion Turbines | Part 60, KKKK: Standards of Performance for Stationary Combustion Turbines | 2023-07-10 |
| Johns Hopkins All Children's Hospital | Regulatory Interpretation for Stationary Reciprocating Internal Combustion Engines | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines | 2023-03-17 |
| University of Michigan - Central Power Plant | Other Request- Request for Operating Limits / Monitoring Petition | Part 63, YYYY: Stationary Gas Turbines | 2023-06-15 |
| Kaiser Aluminum Spokane Valley | Regulatory Interpretation for Secondary Aluminum Production | Part 63, RRR: Secondary Aluminum Production | 2024-09-09 |
| South Wake Landfill | Other Request-Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2023-03-03 |
| Advansix Hopewell Virginia | Alternative Monitoring for Miscellaneous Organic Chemical Manufacturing | Part 63, FFFF: Miscellaneous Organic Chemical Manufacturing | 2023-06-07 |
| Safe Dispose, LLC (SD-40) | Applicability Determination for HMIWI | Part 60, Ec: Hospital/Medical/Infectious Wast Incinerators (Post 6/20/96) | 2023-05-08 |
| Valero Renewable Fuels | Applicability Determination for SOCMI Distillation Operations | Part 60, NNN: SOCMI Distillation Operations | 2023-08-07 |
| Kronospan | Other Request-Compliance Option for Plywood and Composite Wood Products | Part 63, DDDD: Plywood and Composite Wood Products | 2023-03-23 |
| Owl's Head Alloys, Inc. | Alternative Test Method for Secondary Aluminum Production | Part 63, RRR: Secondary Aluminum Production | 2023-07-11 |
| Applied Gaia B3 Continuous Pyrolysis Machine (Biochar Reactor) | Applicability Determination for the Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2024-01-09 |
| Buchanan Marine, LP | Applicability Determination for Nine Metal Fabrication and Finishing Source Categories | Part 63, XXXXXX: NESHAP Area Source Standards for Nine Metal Fabrication and Finishing Source Categories | 2023-04-10 |
| Materion Brush Inc. | Applicability Determination for Stationary Reciprocating Combustion Engines | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines | 2023-05-31 |
| Maple Hill Landfill | Alternative Test Method for MSWLF | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 | 2023-07-14 |
| Dominion Energy | Performance Test Waiver for Coil and Oil Fired Electric Generating Units | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2023-06-12 |
| Eaton Corporation - Auburn Facility | Applicability Determination for Stationary Combustion Engines | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines ; Part 60, IIII: Stationary Compression Ignition Internal Combustion Engines | 2023-09-07 |
| DIVERSIFIED VAPOR TECHNOLOGIES | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2023-07-27 |
| DVT/Multiple R4 Refineries | Alternative Monitoring for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2023-07-25 |
| East Carolina Regional Solid Waste Landfill | Other Request: Well Decommissioning | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2023-09-12 |
| Xcel Energy - High Bridge | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-07-27 |
| International Paper (IP) - Columbus Mill | Alternative Monitoring for Pulp and Paper Production | Part 63, S: Pulp and Paper Production | 2023-08-10 |
| MSU Simon Power Plant | Alternative Operating Limits/Monitoring for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2023-12-08 |
| Holmes Regional Medical Center | Alternative Testing for Stationary Compression Combustion Engine | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines ; Part 60, IIII: Stationary Compression Ignition Internal Combustion Engines | 2023-10-05 |
| City of Spokane Waste to Energy Facility | Other: Force Majeure | Part 60, Eb: Municipal Waste Combustors (Post 9/20/94) ; Part 60, Cb: Municipal Waste Combustors: Emiss. Guidelines/Compl. Times | 2024-04-03 |
| Aurora Energy | Alternative Reporting for Oil and Gas Exploration and Production Operation | Part 63, JJJJJJ: NESHAP for Industrial, Commercial, and Institutional Boilers Area Sources | 2024-08-01 |
| BP Pipelines (North America) Inc. | Applicability Determination for Petroleum Refinery | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2024-04-15 |
| Alyeska Valdez Marine Terminal | Applicability Determination for Municipal Waste Combustors | Part 63, EEEE: Organic Liquids Distribution (non-gasoline) ; Part 63, SS: Closed Vent Systems, Control Devices: Fuel Gas System or Process | 2024-04-04 |
| Corteva Midland Michigan | Applicability Determination Regarding the Distillation of a SOCMI-listed Chemical | Part 63, F: Synthetic Organic Chemical Manufacturing Industry ; Part 60, VVa: Equipment Leaks of VOC in Synthetic Organic Chemicals Mfg Industry (Post 11/7/2006) ; Part 63, G: Process Vents, Storage Vessels, Transfer Operations, and Wastewater | 2023-12-12 |
| DTE Greenwood Energy Center | Applicability Determination for Electric Generating Unit | Part 63, DDDDD: Industrial, Commercial, and Institutional Boilers and Process Heaters ; Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2023-10-24 |
| Magellan Pipeline Company, L.P. - Osborn Station | Test Extension Request for Reciprocating Internal Combustion Engine | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines | 2023-09-18 |
| Seepex, Inc. | Applicability Determination for Nine Metal Fabrication and Finishing Source Categories | Part 63, XXXXXX: NESHAP Area Source Standards for Nine Metal Fabrication and Finishing Source Categories | 2024-01-25 |
| Monarch Ceramic Tile | Applicability Determination for Nonmetallic Mineral Processing Plant | Part 60, OOO: Nonmetallic Mineral Processing | 2024-07-02 |
| U. S. Steel - Keetac | Applicability Determination for Ore Processing | Part 63, RRRRR: Taconite Iron Ore Processing | 2024-02-26 |
| Enerfin Rersources Northwest | Alternative Monitoring for Measurement of VHAP | Part 63, HH: Oil and Natural Gas Production Facilities | 2024-06-17 |
| Sonoma Ecology Center (SEC) | Applicability Determination for Other Solid Waste Incineration | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2024-08-22 |
| Consumers Energy s Muskegon River Compressor Station | Applicability Determination for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-02-21 |
| ANR Pipeline Company (ANR) LaGrange Compressor Station | Applicability Determination for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-02-20 |
| DTE Marietta | Applicability Determination for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-02-21 |
| GVEA Healy | Alternative Test Dates for MATS | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2024-04-25 |
| DTE Gas Company - Belle River Mills, Milford, and Willow Run | Alternative Operating Limits/Monitoring for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-05-02 |
| North Wake Landfill | Alternative Landfill Gas Flowrate Calculation Procedures for NSWL | Part 62, OOO: Federal Plan Requirements for MSWL Constructed On or Before July 17, 2014 ; Part 63, AAAA: Municipal Solid Waste Landfills | 2024-07-02 |
| Heartland Corn Products | Request for Operating Limits / Monitoring Petitions for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2025-04-22 |
| Diversified Vapor Technologies | Alternative Monitoring Plan and Performance Waiver for Petroleum Refineries | Part 60, J: Standards of Performance for Petroleum Refineries ; Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2024-03-27 |
| Nebraska City Station and North Omaha Station | Alternative Recordkeeping and Reporting for MATS | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2024-07-01 |
| Birmingham Airport Authority | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2025-03-10 |
| Brown County South Landfill | Applicability Determination for Municipal Solid Waste | Part 60, XXX: Municipal Solid Waste Landfills (post 7/17/14) | 2024-05-13 |
| Savant Alaska | Alternative Reporting for Oil and Gas Exploration and Production Operation | Part 60, OOOOa: Standards of Performance for Crude Oil and Natural Gas Facilities (after September 18, 2015) | 2024-07-01 |
| CLECO Brame Energy Center-Madison Units 3-1_3-2 | Performance Test Waiver for Coal- and Oil-Fired Electric Utility Steam Generating Units | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units ; Part 63, A: General Provisions | 2024-06-13 |
| Lon D Wright Power Plant | Alternative Reporting and Recordkeeping Requirements for Coal-Fired Power Plant | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2024-08-01 |
| Consumers Muskegon River Compressor Station | Alternative Operating Limits/Monitoring for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-09-05 |
| Platte Generating Station | Alternative Recordkeeping/Reporting for Coal-and Oil Fired Electric Utility Steam Generating Unit | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2024-08-22 |
| ANR Pipeline Sulphur Springs CS | Alternative Operating Limits/Monitoring for Stationary Combustion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-06-04 |
| MSU Simon Turbine | Applicability Determination for Stationary Combusion Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-03-25 |
| Chem Plate Industries | Applicability Determination for Sludge Drying Operation | Part 61, E: Mercury | 2024-10-10 |
| Oil Energy Systems Inc. | Applicability Determination for Other Solid Waste Incineration Units | Part 60, EEEE: Standards of Performance for Other Solid Waste Incineration Units | 2024-09-05 |
| Amgen Manufacturing, Limited | Performance Test Extension for Stationary Combustion Turbine | Part 60, KKKK: Standards of Performance for Stationary Combustion Turbines | 2024-04-11 |
| Baxter Healthcare of Puerto Rico | Performance Test Extension for Stationary Spark Ignition Internal Combustion Engines | Part 60, JJJJ: Stationary Spark Ignition Internal Combustion Engines | 2023-10-10 |
| Primient Lafayette | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2024-09-26 |
| Arbor Management Specialist | Applicability Determination for Commercial and Industrial Solid Waste Incineration Units | Part 60, CCCC: Comm. & Indus. Solid Waste Incineration Units (Post 11/30/99) | 2024-12-10 |
| Cerro Colorado Landfill-City of Albuquerque | Alternative Monitoring for MSW Landfills | Part 60, Cf: Emission Guidelines and Compliance Times for Municipal Solid Waste Landfills | 2024-08-07 |
| Cottonwood Hills RDF | Other Request for MSW Landfills | Part 63, AAAA: Municipal Solid Waste Landfills | 2023-10-31 |
| Clean Harbors - Kimball NE | Alternative Monitoring for Hazardous Waste Combustors | Part 63, EEE: Hazardous Waste Combustors | 2025-05-14 |
| Duke Energy | Regulatory Interpretation for Stationary Reciprocating Internal Combustion Engines | Part 63, ZZZZ: Stationary Reciprocating Internal Combustion Engines | 2025-02-27 |
| ANR Pipeline Company Sulphur Springs and LaGrange Compressor Stations | Alternative Monitoring for Stationary Gas Turbines | Part 63, YYYY: Stationary Gas Turbines | 2025-06-13 |
| QSS Biosolids, LLC | Applicability Determination for Sewage Sludge Incineration Units | Part 60, LLLL: Sewage Sludge Incineration Units ; Part 60, CCCC: Comm. & Indus. Solid Waste Incineration Units (Post 11/30/99) ; Part 60, O: Sewage Treatment Plants | 2025-05-13 |
| PotlatchDeltic Saint Marie's | Regulatory Interpretation for Industrial, Commercial, and Institutional Boilers and Process Heaters | Part 63, DDDDD: Industrial, Commercial, and Institutional Boilers and Process Heaters | 2025-03-13 |
| Citgo Corpus Christi East Refinery | Alternative Monitoring for Petroleum Refineries | Part 60, Ja: Petroleum Refineries (Post 05/14/2007) | 2025-04-25 |
| North Omaha Station | Performance Test Waiver for Coal-and Oil Fired Electric Utility Steam Generating Unit | Part 63, UUUUU: Coal- and Oil-Fired Electric Utility Steam Generating Units | 2025-05-19 |
| Eagle Butte Co-op Incinerator | Applicability Determination for Commercial and Industrial Solid Waste Incineration Units | Part 60, CCCC: Comm. & Indus. Solid Waste Incineration Units (Post 11/30/99) | 2025-05-28 |
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