Air Toxics and the Clean Air Act

Clean Air Act Section 112, hazardous air pollutants, air toxics standards, MACT, and NESHAP records.

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Summary Year FOIA ID Number Production ID Pages
On March 31, 2025, United States Steel Corporation submitted a request to EPA Administrator Lee M. Zeldin for a two-year Presidential Exemption from compliance with the Coke RTR Rule for its Clairton Coke Plant, citing unavailability of required technology and national security concerns. 2025 2025-EPA-04883
0012489–0012501
13
On March 31, 2025, Elite Spice Inc. submitted a request for a Presidential Exemption under the Clean Air Act regarding Ethylene Oxide emissions standards, seeking a 24-month extension for compliance due to technological challenges and public health concerns. 2025 2025-EPA-04883
0012511–0012513
3
On March 31, 2025, Freeport-McMoRan Miami Inc. submitted a request to EPA Administrator Lee Zeldin for a two-year Presidential Exemption from compliance deadlines under the National Emission Standards for Hazardous Air Pollutants for its Miami Smelter in Arizona, citing prohibitive costs and national security concerns. 2025 2025-EPA-04883
0012514–0012529
16
On March 31, 2025, Oak Grove Management Company LLC submitted a request to President Trump for a two-year Presidential exemption from compliance with mercury and particulate matter standards under the Clean Air Act for the Oak Grove Steam Electric Station. 2025 2025-EPA-04883
0012535–0012539
5
On March 31, 2025, United States Steel Corporation submitted a request to EPA Administrator Lee M. Zeldin for a two-year Presidential Exemption from compliance with the 2024 amendments to the National Emission Standards for Hazardous Air Pollutants for its integrated iron and steel manufacturing facilities. 2025 2025-EPA-04883
0012550–0012569
20
On March 31, 2025, Otter Tail Power Company submitted a request to EPA Administrator M. Zeldin for a two-year Presidential Exemption from compliance with the MATS RTR emissions standards for the Big Stone Plant in South Dakota. 2025 2025-EPA-04883
0012595–0012602
8
On March 31, 2025, Otter Tail Power Company requested a two-year Presidential Exemption from compliance with the revised National Emission Standards for Hazardous Air Pollutants for the Coyote Station in North Dakota, citing challenges in meeting new mercury limits. 2025 2025-EPA-04883
0012603–0012611
9
On March 31, 2025, Sasol Chemicals (USA) LLC submitted a request to the EPA for a presidential exemption from compliance obligations under the New Source Performance Standards and NESHAP for the Synthetic Organic Chemical Manufacturing Industry, citing national security and economic concerns. 2025 2025-EPA-04883
0012612–0012615
4
On March 31, 2025, DuPont Specialty Products USA, LLC submitted a request to the EPA for a two-year extension to comply with New Source Performance Standards and NESHAP regulations for its diamine unit at the Pontchartrain Site in La Place, Louisiana. 2025 2025-EPA-04883
0012616–0012618
3
TotalEnergies Petrochemicals & Refining USA, Inc. submitted a request to the EPA on March 31, 2025, seeking a two-year extension for compliance with New Source Performance Standards and NESHAP for its facilities in Port Arthur, Texas. 2025 2025-EPA-04883
0012635–0012637
3
On March 31, 2025, Huntsman Petrochemical LLC requested a Presidential exemption from compliance with the New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants for its Conroe, Texas facility, citing national security and technological unavailability. 2025 2025-EPA-04883
0012619–0012634
16
On March 31, 2025, Celanese Corporation requested a two-year presidential exemption from compliance with the New Source Performance Standards and National Emission Standards for its facilities in Virginia and Texas, citing technological unavailability and potential economic impacts. 2025 2025-EPA-04883
0012649–0012652
4
CITGO Petroleum Corporation submitted a request on March 31, 2025, to the EPA for a presidential exemption from compliance with New Source Performance Standards and National Emission Standards for its three refineries, citing technological challenges and the need for additional time to meet regulatory requirements. 2025 2025-EPA-04883
0012662–0012665
4
On March 28, 2025, SABIC Innovative Plastics Mt. Vernon, LLC requested a Presidential exemption from compliance with the New Source Performance Standards and NESHAP for the Synthetic Organic Chemical Manufacturing Industry, citing economic impacts and the need for additional time to comply. 2025 2025-EPA-04883
0012685–0012687
3
Rubicon LLC submitted a request to the EPA on March 31, 2025, seeking a two-year extension of compliance deadlines for the New Source Performance Standards and NESHAP for the Synthetic Organic Chemical Manufacturing Industry, citing national security and technological unavailability. 2025 2025-EPA-04883
0012672–0012684
13
On March 28, 2025, Blake Pinkerton of Associated Electric Cooperative Inc. emailed the EPA's AirAction regarding a request for a Presidential Exemption under Clean Air Act Section 112(i)(4) related to compliance with the MATS Rule for the Thomas Hill Energy Center and New Madrid Power Plant. 2025 2025-EPA-04883
0012688–0012690
3
On March 26, 2025, Lhoist North America's CEO, Philip Niemann, authorized the National Lime Association to request a two-year presidential exemption from compliance with the Lime Rule for several major source lime plants. 2025 2025-EPA-04883
0012706
1
On March 26, 2025, Bradley D. Kohn, Vice President and Secretary of Martin Marietta Magnesia Specialties, authorized the National Lime Association to request a two-year presidential exemption from compliance with the Lime Rule for their major source lime plants. 2025 2025-EPA-04883
0012707
1
On March 26, 2025, Paul Hogan, Chief Executive Officer of Mississippi Lime Company, authorized the National Lime Association to request a two-year presidential exemption from emissions standards for their lime plant in St. Genevieve, Missouri, under Clean Air Act Section 112. 2025 2025-EPA-04883
0012708
1
On March 31, 2025, Seward Generation submitted a request to President Trump for a two-year Presidential exemption from compliance with the MATS Rule, citing unavailability of technology and national security interests. 2025 2025-EPA-04883
0012721–0012724
4
On March 28, 2025, Ebensburg Power Company requested a two-year Presidential exemption from compliance with the MATS Rule, citing unavailability of technology and national security interests in a letter to President Trump. 2025 2025-EPA-04883
0012725–0012728
4
Email from Alex Brush of Ri-Corp. Development, Inc. to the EPA's AirAction on March 28, 2025, regarding a request for a Presidential Exemption from the MATS Rule for Gilberton Power Company, with an attached document. 2025 2025-EPA-04883
0012733
1
On March 28, 2025, Alexander Brush, General Manager of Ri Corp. Development, Inc., submitted a request to EPA Administrator Lee Zeldin for a Presidential exemption from the MATS Rule for the Gilberton Power Company, citing technical and financial challenges in meeting new emission standards. 2025 2025-EPA-04883
0012734–0012737
4
On March 28, 2025, Alexander Brush, General Manager of Ri-Corp. Development, Inc. d/b/a Gilberton Power Company, submitted a request to EPA Administrator Lee Zeldin for a Presidential Exemption from the MATS Rule, citing technical and financial challenges in meeting the new emission standards. 2025 2025-EPA-04883
0012738–0012742
5
On March 28, 2025, Cedric F. Green of Dominion Energy submitted a request to the EPA for a two-year Presidential Exemption under Section 112(i)(4) of the Clean Air Act for the Mt. Storm Power Station in West Virginia, citing national security concerns related to compliance with the revised fPM standard. 2025 2025-EPA-04883
0012743–0012748
6
On March 28, 2025, Troy Tweeten of Basin Electric Power Cooperative submitted a request to EPA Administrator Lee Zeldin for a two-year Presidential Exemption from compliance with the 2024 MATS Rule, citing technological unavailability and national security concerns. 2025 2025-EPA-04883
0012749–0012755
7
On March 28, 2025, Michael McCall of the Tennessee Valley Authority submitted a request to the EPA for a Presidential Exemption from the National Emission Standards for Hazardous Air Pollutants for the Cumberland Fossil Plant, citing compliance challenges and the plant's planned retirement by 2028. 2025 2025-EPA-04883
0012762–0012765
4
On March 28, 2025, Michael McCall of the Tennessee Valley Authority submitted a request to the EPA for a Presidential Exemption from the National Emission Standards for Hazardous Air Pollutants for its Gallatin, Shawnee, and Kingston Fossil Plants. 2025 2025-EPA-04883
0012757–0012761
5
On March 28, 2025, Minnkota Power Cooperative submitted a request to EPA Administrator Lee Zeldin for a two-year Presidential Exemption from compliance with the MATS RTR emissions standards for the Milton R. Young Station, citing technological unavailability and grid reliability concerns. 2025 2025-EPA-04883
0012782–0012793
12
On April 25, 2024, the EPA finalized revisions to the Mercury and Air Toxics Standards (MATS) for coal-fired power plants, introducing stricter emissions standards and continuous monitoring requirements to reduce hazardous air pollutants. 2025 2025-EPA-04883
0012771–0012781
11
Sargent & Lundy conducted a final evaluation on June 23, 2023, for Minnkota Power Cooperative's Milton R. Young Station Unit 2, assessing particulate and mercury control technologies in response to the proposed Mercury and Air Toxics Standards (MATS) rule. 2025 2025-EPA-04883
0012810–0012824
15
Mercury Testing Results for the MATS Residual Risk and Technology Review, prepared by Sargent & Lundy for Minnkota Power Cooperative, details mercury emissions reduction strategies for the Milton R. Young Station Units 1 and 2, dated May 22, 2024. 2025 2025-EPA-04883
0012794–0012809
16
A memorandum from Ralph L. Roberson of RLR Consulting, dated June 16, 2023, provides technical comments on the EPA's proposed revisions to the Mercury and Air Toxics Standards, arguing against the elimination of quarterly stack testing for compliance. 2025 2025-EPA-04883
0012825–0012832
8
Robert McLennan, President and CEO of Minnkota Power Cooperative, submitted a declaration detailing the financial and operational impacts of the EPA's Mercury and Air Toxics Standards on the cooperative, dated December 2, 2025. 2025 2025-EPA-04883
0012833–0012872
40
On March 28, 2025, John Oelbracht, Plant Manager of Rausch Creek Generation, LLC, submitted a request to EPA Administrator Lee Zeldin for a presidential exemption from the MATS Rule, seeking delayed compliance until July 6, 2029, citing technical feasibility concerns. 2025 2025-EPA-04883
0012873–0012875
3
On March 28, 2025, Shell Chemical LP requested a two-year extension for compliance with the National Emission Standards for Hazardous Air Pollutants (NESHAP) for its Geismar, Louisiana plant, citing ongoing planning and capital expenditures. 2025 2025-EPA-04883
0012876–0012877
2
Email from Alan Thornton of Blue Streak Steel Corporation to the EPA's AirAction mailbox, dated March 28, 2025, requesting a two-year Presidential Exemption under Clean Air Act Section 112(i)(4) for compliance with emissions standards due to technological unavailability and national security interests. 2025 2025-EPA-04883
0012878–0012879
2
On April 1, 2025, Jeff Holmstead emailed the EPA's AirAction mailbox requesting a Presidential Exemption under Section 112(i)(4) of the Clean Air Act for Denka Performance Elastomer LLC's Neoprene Production Facility in LaPlace, Louisiana, seeking a two-year extension for compliance with the HON Rule. 2025 2025-EPA-04883
0012880–0012884
5
Email from Robert Vogel of INEOS Americas LLC to the EPA's AirAction mailbox on April 1, 2025, requesting a Presidential Exemption under section 112(i)(4) of the Clean Air Act for the Bayport EO Plant's compliance with the Hazardous Organic NESHAP. 2025 2025-EPA-04883
0012885–0012888
4
On March 31, 2025, Cardinal Operating Company submitted a request to EPA Administrator Lee Zeldin for a two-year exemption from the 2024 MATS Rule for its coal-fired units, citing technology limitations and national security concerns regarding electricity supply. 2025 2025-EPA-04883
0014838–0014839
2
On March 31, 2025, Walter Tamukong of Cleveland-Cliffs Inc. submitted a request to the EPA for a two-year Presidential exemption from National Emission Standards for Hazardous Air Pollutants for their Indiana harbor lime manufacturing facility, citing acceptable health risks and including supporting documents. 2025 2025-EPA-04883
0014843–0014844
2
On April 16, 2025, City Water, Light and Power of Springfield, Illinois, submitted a request to EPA Administrator Lee Zeldin for a two-year exemption from the 2024 MATS rule for Dallman Unit 4, citing technological unavailability and the unit's critical role in regional grid reliability. 2025 2025-EPA-04883
0014840–0014842
3
Email from David K. Mohon of Southern Company to EPA's AirAction on April 1, 2025, requesting a Presidential exemption under Section 112(i)(4) of the Clean Air Act for compliance with National Emission Standards for Hazardous Air Pollutants. 2025 2025-EPA-04883
0014852
1
An email dated March 31, 2025, from Alexander Engel to the EPA's AirAction team requests a presidential exemption for Shieldon Industries from the National Emissions Standards for Hazardous Air Pollutants due to technical and financial constraints. 2025 2025-EPA-04883
0014863
1
Email correspondence from AirAction to Paula McCain on April 2, 2025, corrects the email address for submitting Confidential Business Information related to a Presidential Exemption request under Section 112(i)(4) of the Clean Air Act. 2025 2025-EPA-04883
0014886–0014887
2
Email correspondence from Kevin Culligan to Alicia Bowen on December 15, 2025, includes a corrected letter regarding the Cardinal MATS exemption request, originally initiated by Caitlin Schiebel of Buckeye Power on April 15, 2025. 2025 2025-EPA-04883
0014895
1
On March 31, 2025, Cardinal Operating Company submitted a request to EPA Administrator Lee Zeldin for a two-year exemption from the 2024 MATS Rule for its coal-fired units, citing the lack of available technology to meet new particulate matter limits and emphasizing the plant's critical role in national energy security. 2025 2025-EPA-04883
0014896–0014898
3
On March 31, 2025, Indorama Ventures Xylenes and PTA requested a Presidential exemption from compliance obligations under the New Source Performance Standards and NESHAP for the Synthetic Organic Chemical Manufacturing Industry, citing economic and national security concerns. 2025 2025-EPA-04883
0014899–0014901
3
Request for Presidential Exemption submitted by Brian C. DeBusk, CEO of DeRoyal Industries, Inc., regarding compliance with the EPA's Ethylene Oxide Emissions Standards for Sterilization Facilities, citing supply chain issues and national security concerns, dated March 2024. 2024 2025-EPA-04883
0024958–0024962
5
National Emission Standards for Hazardous Air Pollutants for Taconite Iron Ore Processing, EPA Docket No. OAR, published in the Federal Register on March 6, 2024, with contact information for Walter Tamukong at Cleveland-Cliffs Inc. 2024 2025-EPA-04883
0005565
1
National Emission Standards for Hazardous Air Pollutants regarding Taconite Iron Ore Processing, published in the Federal Register on March 6, 2024, with contact information for Walter Tamukong of Cleveland-Cliffs Inc. 2024 2025-EPA-04883
0005570
1
A letter dated September 10, 2025, from Candace Childers, Vice President of ALCON Research Ltd., requests a Presidential Exemption for Ethylene Oxide Emission Standards for Sterilization Facilities, addressed to Administrator Zeldin. 2024 2025-EPA-04883
0005576
1
EPA correspondence dated September 10, 2025, from Walter Tamukong grants an extension for steel manufacturers under National Emission Standards for Hazardous Air Pollutants, citing acceptable risk levels and includes three supporting Congressional letters. 2024 2025-EPA-04883
0005584
1
Cleveland-Cliffs Inc. requested a two-year Presidential exemption from compliance with the National Emission Standards for Hazardous Air Pollutants for its facilities, citing acceptable risk assessments by the EPA, in correspondence dated September 10, 2025. 2024 2025-EPA-04883
0005587
1
A letter from the Sierra Club to the EPA discusses the importance of the gasoline distribution industry for national security and requests a Presidential Exemption for sources affected by the National Emission Standards for Hazardous Air Pollutants established in the Gasoline Distribution Rule issued on May 8, 2024. 2024 2025-EPA-04883
0005590
1
EPA's interim release for FOIA request 2025-EPA-04883 discusses emission monitoring requirements for vapor combustion units, concerns about contractor availability for LDAR programs, and compliance challenges for gasoline loading facilities under the 2024 NESHAP revisions. 2024 2025-EPA-04883
0005592
1
The EPA's interim release for FOIA ID 2025-EPA-04883, dated September 10, 2025, discusses GVEA's request for a two-year Presidential Exemption from MATS emissions limits due to national security concerns and technical infeasibility. 2024 2025-EPA-04883
0005597
1
A November 22, 2024 letter from the Vinyl Institute to the EPA argues that the agency incorrectly calculated the dioxin and furan emission limit for process vents, violating Section 112(d)(3) of the Clean Air Act. 2024 2025-EPA-04883
0005642
1
A follow-up letter from the Vinyl Institute dated November 22, 2024, discusses concerns regarding EPA's methodology for setting emission limits based on a limited number of facilities under Section 112 of the Clean Air Act. 2024 2025-EPA-04883
0005643
1
EPA's 2025-EPA-04883 FOIA release discusses the technological and financial challenges SunCoke faces in meeting new MACT floor emission limits for hazardous air pollutants at its facilities. 2024 2025-EPA-04883
0005656
1
SunCoke requested a two-year exemption from compliance with the MACT floor emission limits established in the Coke Ovens Rule for main and bypass vent stacks, citing technological infeasibility and safety concerns, in correspondence dated September 10, 2025. 2024 2025-EPA-04883
0005657
1
EPA's interim release for FOIA request 2025-EPA-04883 discusses the technological and financial challenges SunCoke faces in meeting new MACT floor emission limits for hazardous air pollutants at its facilities, citing costs potentially exceeding $99 million. 2024 2025-EPA-04883
0005670
1
On September 3, 2024, Perkins Coie submitted a petition for reconsideration and request for stay regarding EPA's final rule on hazardous air pollutants for coke ovens, on behalf of SunCoke Energy Inc., to Administrator Michael S. Regan. 2024 2025-EPA-04883
0005733
1
EPA proposed to amend the NEST IAP and NESHAP for Coke Oven Batteries, with stakeholders, including SunCoke, requesting a 45-day extension for public comments due to the complexity of the rules and extensive supporting documents, which EPA denied. 2024 2025-EPA-04883
0005739
1
EPA's interim release for FOIA request 2025-EPA-04883 discusses MACT floor limits for 17 hazardous air pollutants, addressing comments from SunCoke and detailing the agency's rationale for differing standards in the Final Rule. 2024 2025-EPA-04883
0005741
1
EPA's interim release regarding FOIA ID 2025-EPA-04883 discusses concerns raised by SunCoke about the adequacy of MACT floor emission limits for Bypass/Waste Heat Stacks, citing insufficient data and the need for reevaluation of these limits. 2024 2025-EPA-04883
0005746
1
USCA Case #24-1287 filed on September 30, 2024, discusses differences between ByP and HNR facilities in chemical recovery and notes EPA's recognition of SunCoke's cokemaking process as the industry MACT. 2024 2025-EPA-04883
0005777
1
On July 5, 2024, the EPA finalized a rule establishing 17 new MACT floor emission limits for Hazardous Air Pollutants, affecting SunCoke's operations, with a compliance deadline of December 5, 2025. 2024 2025-EPA-04883
0005778
1
USCA Case #24-1287 filed on 09/30/2024 critiques the EPA's Final Rule on MACT floor emissions, citing multiple errors that render compliance unachievable for SunCoke, necessitating immediate costly testing and control installations. 2024 2025-EPA-04883
0005779
1
USCA Case #24-1287 filed on 09/30/2024 discusses SunCoke's argument that the EPA's MACT floor standards were based on insufficient data from 2016 and 2022, leading to potential severe harm for the company. 2024 2025-EPA-04883
0005780
1
USCA Case #24-1287 filed on 09/30/2024 includes data indicating that multiple SunCoke facilities, including HH1, failed to meet the MACT floor emissions limits for particulate matter and mercury. 2024 2025-EPA-04883
0005781
1
USCA Case #24-1287 filed on 09/30/2024 discusses EPA's failure to fully consider relevant data regarding SunCoke's compliance with MACT floor limits, impacting cost and compliance timelines. 2024 2025-EPA-04883
0005782
1
A court document filed on September 30, 2024, in USCA Case #24-1287 critiques the EPA's insufficient data and assumptions regarding SunCoke's compliance with MACT floor emissions limits for mercury. 2024 2025-EPA-04883
0005783
1
USCA Case #24-1287 filed on 09/30/2024 discusses EPA's challenges in setting MACT floor limits for emissions due to insufficient data, particularly for mercury and acid gases in SunCoke's operations. 2024 2025-EPA-04883
0005784
1
USCA Case #24-1287 filed on 09/30/2024 discusses SunCoke's incurred testing costs nearing $3 million and AECOM's role in assisting with environmental compliance and testing for HAPs across SunCoke's plants. 2024 2025-EPA-04883
0005786
1
USCA Case #24-1287 filed on 09/30/2024 discusses SunCoke's need to install emissions controls at its HH1 facility to comply with new MACT floor limits for mercury and particulate matter. 2024 2025-EPA-04883
0005787
1
USCA Case #24-1287 filed on 09/30/2024 discusses SunCoke's PAH emissions testing results from June 2017, indicating marginal compliance with MACT floor limits and potential costs of $260 million for necessary corrections. 2024 2025-EPA-04883
0005790
1
USCA Case #24-1287 filed on 09/30/2024 includes SunCoke's claims regarding compliance challenges with EPA's MACT floor limits, detailing specific emissions data and testing results from November 2020. 2024 2025-EPA-04883
0005792
1
USCA Case #24-1287 filed on 09/30/2024 discusses SunCoke's compliance challenges with new MACT vent stack emissions limits and its critical role in supplying coke to the U.S. steel industry. 2024 2025-EPA-04883
0005795
1
Denka Performance Elastomer LLC's Environmental Affairs Manager, Chris Meyers, outlines challenges in meeting EPA's Section 112 standards, citing a lack of available technology and requesting a two-year extension for compliance due to safety and installation concerns. 2024 2025-EPA-04883
0005829
1
On September 10, 2025, Jeffrey R. Holmstead submitted a request to the President for a two-year extension for DPE's compliance with CAA Section 112 standards for its Neoprene Production Facility in LaPlace, Louisiana, citing national security interests. 2024 2025-EPA-04883
0005830
1
Luminant submitted a request for a two-year exemption from the MATS RTR compliance standards for Martin Lake Units 1-3, citing unavailability of required technology and national security interests, as outlined in FOIA ID 2025-EPA-04883. 2024 2025-EPA-04883
0005921
1
Indorama Ventures submitted a letter to the EPA on March 16, 2024, requesting an extension of national emission standards for hazardous air pollutants related to ethylene oxide, citing national security risks and the critical nature of EO in manufacturing. 2024 2025-EPA-04883
0005993
1
Indorama Ventures submitted concerns regarding EPA's hazardous air pollutant regulations, citing challenges with ethylene oxide detection, costly emission controls, and compliance deadlines in a letter dated September 10, 2025, under FOIA ID 2025-EPA-04883. 2024 2025-EPA-04883
0005999
1
Indorama Ventures Oxides LLC submitted an extension request on October 13, 2024, seeking a two-year compliance period extension for emission control projects mandated by the EPA's final rule on hazardous air pollutants, effective July 15, 2024. 2024 2025-EPA-04883
0006002
1
On September 10, 2025, Panther Creek Power submitted an exemption request to EPA Administrator Lee Zeldin regarding the MATS Rule, seeking additional time to comply with emission standards for coal- and oil-fired electric utility steam generating units. 2024 2025-EPA-04883
0006040
1
A declaration submitted by the President of Talen Montana in support of a joint motion to stay the EPA's Mercury and Air Toxics Standards final rule, detailing the impact on Talen Montana's operations and economic interests. 2024 2025-EPA-04883
0006166
1
USCA Case #24-1190 filed on June 27, 2024, discusses the financial implications of the MATS Final Rule on Colstrip, estimating compliance costs over $350 million and potential severe economic consequences for Montana. 2024 2025-EPA-04883
0006168
1
USCA Case #24-1190 filed on June 27, 2024, discusses Talen Montana's compliance options and financial implications related to Colstrip's ownership structure and the MATS Final Rule. 2024 2025-EPA-04883
0006170
1
USCA Case #24-1190 filed on 06/27/2024 discusses financial risks and disputes among Colstrip owners regarding compliance with the MATS Final Rule and the implications of installing new emissions control systems. 2024 2025-EPA-04883
0006178
1
Burns & McDonnell's April 2024 evaluation outlines Talen Montana's ongoing efforts to estimate costs and engineering for pollution control equipment to comply with the MATS Final Rule, anticipating a $350 million project timeline extending to 2027. 2024 2025-EPA-04883
0006180
1
USCA Case #24-1190 filed on 06/27/2024 discusses Talen Montana's operational risks and compliance efforts at Colstrip, noting its fPM emissions consistently below EPA's MATS limit since 2018. 2024 2025-EPA-04883
0006184
1
USCA Case #24-1190 filed on 06/27/2024 discusses the potential economic impacts of the MATS Final Rule on Talen Montana and the Colstrip plant, emphasizing the urgency of decisions amid ongoing litigation. 2024 2025-EPA-04883
0006187
1
USCA Case #24-1190 filed on June 27, 2024, includes a statement from Dale E. Lebsack, Jr., President of Talen Montana, regarding the economic contributions of Colstrip and the potential harm from the MATS Final Rule. 2024 2025-EPA-04883
0006189
1
Burns & McDonnell conducted a cost evaluation for two particulate control options to comply with the proposed Mercury and Air Toxics Standards (MATS) Rule, detailing capital and operational costs for an Electrostatic Precipitator and a fabric filter as part of FOIA request 2025-EPA-04883. 2024 2025-EPA-04883
0006193
1
A report discusses the feasibility and cost evaluations for compliance options at Colstrip Units 3 and 4, emphasizing the challenges posed by ownership structure and regulatory deadlines under the EPA's MATS Rule. 2024 2025-EPA-04883
0006218
1
The U.S. Environmental Protection Agency released a final report on April 25, 2024, analyzing the economic implications of the revised Mercury Air and Toxics Standards on Montana's Colstrip Steam Electric Station and its associated coal mine. 2024 2025-EPA-04883
0006227
1
USCA Case #24-1190 filed on June 27, 2024, discusses the economic implications of the MATS rulemaking on Montana, detailing employment impacts across various industries due to the closure of the Colstrip SES and Rosebud Mine. 2024 2025-EPA-04883
0006231
1
USCA Case #24-1190 filed on 06/27/2024 includes economic impact tables detailing the financial implications of MATS rulemaking in Montana, showing significant losses in wages, jobs, and industry revenues. 2024 2025-EPA-04883
0006233
1
USCA Case #24-1190 filed on June 27, 2024, discusses the economic implications of the MATS rulemaking in Montana, detailing revenue impacts exceeding $100 million annually due to closures in Colstrip. 2024 2025-EPA-04883
0006234
1