Laws & Regulations
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Results using EPA’s Power Sector Modeling Platform v6 - November 2018 Reference Case
Download EPA's IPM v6 including documentation, overview, System Summary Report, .DAT, .RPE, .RPT files, Gas Report, State Level Emissions, Generation and Heat Input Summary.
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Results using EPA’s Power Sector Modeling Platform v6 - May 2019 Reference Case
Download EPA's IPM v6 including documentation, overview, System Summary Report, .DAT, .RPE, .RPT files, Gas Report, State Level Emissions, Generation and Heat Input Summary.
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Certification and Compliance for Nonroad Vehicles and Engines
Certification and compliance information for aircraft, all-terrain vehicles (ATVs) and dirt bikes, locomotives, marine compression-ignition (CI) engines, nonroad CI engines, nonroad spark (SI) engines, portable fuel containers, snowmobiles.
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Presentation on the Transition Program for Equipment Manufacturers (TPEM)
This presentation provides information about TPEM.
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CSAPR Compliance Year 2021 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2020 compliance year.
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Proposed State Budgets under the CSAPR for the 2015 Ozone NAAQS
Proposed State Budgets under the CSAPR for the 2015 Ozone NAAQS
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Court of Appeals: EME Homer City Generation, L.P. v. Environmental Protection Agency, et al.
On January 24, 2013, the United States Court of Appeals for the D.C. Circuit denied EPA's petition for rehearing en banc of the Court's August 2012 decision to vacate the Cross-State Air Pollution Rule.
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Dotson, Carlos v. United States
The U.S. Supreme Court granted the United States' petition asking the Court to review the D.C. Circuit Court's decision on CSAPR.
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Environmental Protection Agency et al. v. EME Homer City Generation, L. P., et al.
On April 29, 2014, the U.S. Supreme Court reversed the D.C. Circuit opinion vacating CSAPR, holding that CSAPR "is a permissible, work- able, and equitable interpretation of the Good Neighbor Provision."
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Notice of Intent: Effect of Stay of Transport Rule
A December 30, 2011 order of the U.S. Court of Appeals for the District of Columbia Circuit stayed the Transport Rule, also known as the Cross-State Air Pollution Rule. This document sets out EPA’s interpretation of the effect of the Court’s stay on FIPs.
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Support Files for Nonroad Compression-Ignition (NRCI) Certification in the Engines and Vehicles Compliance Information System (EV-CIS)
Use these files for the NRCI module in EV-CIS.
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Summary of Proposed NOₓ Emission Limits for Industrial Sources
Summary of Proposed NOₓ Emission Limits for Industrial Sources for the CSAPR for the 2015 Ozone NAAQS
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State Budgets under the Good Neighbor Plan for the 2015 Ozone NAAQS
State Budgets under the Good Neighbor Plan for the 2015 Ozone NAAQS
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State Budgets under the Revised Cross-State Air Pollution Rule Update
Revised Cross-State Air Pollution Rule Update State Budgets
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Acid Rain Program, CSAPR, CSAPR Update, and MATS Forms
Download forms for plants participating in the Acid Rain Program (ARP), CSAPR, and MATS.
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Fuel Pathways under Renewable Fuel Standard
RFS Fuel Pathways petition process and supporting documents
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Notice of pending rulemaking that may affect CSAPR NOₓ Ozone Season Group 2 and Group 3 Allowances
Notice of Pending Rulemaking that may Affect CSAPR NOₓ Ozone Season Group 2 and Group 3 Allowances and Changes to Safety Valve Allowance Conversion Process
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Petition Preparation Help
Preparing a part 75 Petition provides useful information and answers to common questions that will help the designated representative for a unit subject to part 75 prepare and submit a complete petition under §75.66.
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EPA's Draft 2017 Construction General Permit (CGP)
EPA is preparing to reissue the Construction General Permit (CGP). The general permit, issued under the Clean Water Act's National Pollutant Discharge Elimination System, authorizes stormwater discharges from construction activities.
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EPA Proposes Amendments to Two Air Toxics Standards to Remove Affirmative Defense Provisions
Proposed Rule for Oil and Gas Industry