Laws & Regulations
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2014 SO2 Allowance Auction
Learn the results of EPA's 2014 Acid Rain Program sulfur dioxide (SO2) allowance auction results, which took place March 25, 2014.
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Responses to 40 CFR Part 75 Petitions - 2011
Find responses to petitions submitted by affected units subject to 40 CFR Part 75 in 2011.
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Responses to 40 CFR Part 75 Petitions - 2017
Approval for an alternative data substitution methodology.
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Responses to 40 CFR Part 75 Petitions - 2021
The Agency response to the Sarpy County petition request..
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1994 SO2 Allowance Auction
Learn the results of EPA's 1994 Acid Rain Program sulfur dioxide (SO2) allowance auction results
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2023 Key Program Dates
Key dates in 2022 for Clean Air Markets programs.
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Analysis of the Proposed NSPS for GHG Emissions from New, Modified, and Reconstructed EGUs
Find on this page the files for the Integrated Planning Model runs for EPA's proposed Guidelines for Reducing Electric utility generating unit (EGU) Emissions Nationwide (GREEN)
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Interstate Transport of Fine Particulate Matter: Revision of Federal Implementation Plan Requirements for Texas
Cross-State Air Pollution Rule S02 Remand Response Rule: Interstate Transport of Fine Particulate Matter: Revision of Federal Implementation Plan Requirements for Texas
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Availability of Data on Allocations of Cross-State Air Pollution Rule Allowances From New Unit Set-Asides for the 2015 Compliance Year
The Environmental Protection Agency (EPA) provides notice of the availability of preliminary calculations of emission allowance allocations to certain units under the Cross-State Air Pollution Rule (CSAPR).
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Bulk Gasoline Terminals NSPS - Frequent Questions
Frequently asked questions related to the final Bulk Gas Terminals New Source Performance Standards issued in 2024
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RFC 18003 - OAR MON RTR Rulemaking
This action finalizes the residual risk and technology review (RTR) conducted for the Miscellaneous Organic Chemical Manufacturing source category regulated under national emission standards for hazardous air pollutants (NESHAP).
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RFC 21002 - Carbon Tetrachloride
This is a Request for Correction Risk Evaluation for Carbon Tetrachloride; EPA-HQ-OPPT-2019-0499
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RFR 04019A
RE: Request for Reconsideration of Request for Correction (RFC 04019)
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RFR 18003A - Request for Reconsideration Received 3/14/2022
Document page for RFR 18003A with attachments
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RFC 18003 - Signed Response to W Gulledge of ACC, dated 12/13/2021
Signed response letter to Mr. William P. Gulledge on behalf of the Ethylene Oxide Panel for RFC 18003RFC 18003 - issued 12/13/2021
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Maryland SIP, Section 110(a)(2) Infrastructure Requirements for the 2010 SO2 NAAQS.
Maryland - EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Maryland SIP
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EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Virginia SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Virginia SIP
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West Virginia SIP Maintenance Plans for WV Portion of Steubenville-Weirton Nonattainment Area for the 1997 Annual and 2006 24-Hour PM2.5 Standards
West Virginia SIP - EPA Approved non -regulatory and quasi-regulatory material
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Pennsylvania SIP, Source Specific Requirement, Oakmont Pharmaceutical, Inc.
Pennsylvania SIP - Source Specific Requirement
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PCS Phosphate Company Inc. - Mine Continuation Permit Proposed Additional Avoidance to Respond to EPA & ASA concerns
Contains e-mail cover & outline from PCS regarding Proposed Additional Avoidance to Respond to EPA & ASA concerns, May 14, 2009