Laws & Regulations
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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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Best Practices
Guidance and best practices for practitioners who are considering implementation of an emissions trading program.
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Key Terms
Definitions of common terms in emissions trading.
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Emissions Trading Programs
Emissions trading programs including both EPA and state and regional programs.
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About Green Infrastructure
Green infrastructure may be used to comply with CWA requirements, treat stormwater, improve water quality, and mitigate flooding while also beautifying our communities.
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Requirements for In-Use Emissions Testing for Clean Diesel Technology
In-use testing is used to verify the field performance of products that are on the List of Verified Technology.
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Aerodynamic Wind Tunnel Testing for SmartWay Verification
This document provides information on the wind tunnel test method used for SmartWay verification of aerodynamic devices.
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Emission Trading Results
A summary of the results of emissions trading programs since the start of the Acid Rain Program in 1990.
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Proposed State Budgets under the Proposed Supplemental Interstate Transport Rule
Proposed State Budgets under the Proposed Supplemental Interstate Transport Rule
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Personal Social Media and the Hatch Act for Lesser Restricted Employees
Learn about what the hatch act saying about Lesser Restricted Employees managing their personal social media accounts during a lapse of appropriations (shutdown).
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Regulatory Impact Analysis for the Review of the Clean Power Plan: Proposal
Regulatory Impact Analysis for the Review of the Clean Power Plan: Proposal
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Personal Social Media and the Hatch Act for Further Restricted Employees
Learn about what the hatch act saying about Further Restricted Employees managing their personal social media accounts during a lapse of appropriations (shutdown).
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EPA announces $48 million for southeastern states to repair water systems impacted by Hurricane Helene
EPA announces $48 million for southeastern states to repair water systems impacted by Hurricane Helene
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Does EPA Invalidate RINs?
No. The EPA has no process to “invalidate” RINs. Rather, the EPA alleges that RINs are not valid according to the standards in 40 C.F.R. §§ 80.1131 or 80.1431. As we stated in our March 2012 Interim Enforcement Response Policy: The EPA intends to notify the regulated community that it has alleged…
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Does EPA have a role in ensuring the validity of Renewable Identification Numbers (RINs)?
The Renewable Fuels Standard (RFS) regulations are clear that invalid RINs may not be used for compliance. EPA does not certify or otherwise validate RINs. In providing regulated parties with the flexibility of purchasing RINs to meet RFS requirements, EPA stated that the buyer must beware.
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What is a Notice of Violation (NOV) Letter?
A Notice of Violation or “NOV” letter one step in the EPA’s investigation and enforcement of violations of EPA statutes and regulations. A NOV notifies the recipient that the EPA believes the recipient has committed one or more violations and provides instructions for coming into compliance with the statutes and…
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What should a company do if they believe they currently own invalid RINs or retired invalid RINs to meet its RVO?
Follow the regulations at 40 C.F.R. § 80.1431(b) (excerpted below) and, as needed, contact the EPA’s Fuels Compliance Center of the Office of Transportation and Air Quality (OTAQ) via the Fuels Programs Support Line (EPAFuelsPrograms@epa.gov or 1-800-385-6164). “In the case of RINs that are invalid, the following provisions apply: Upon…
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EPA Region 8 Drinking Water Unit Tech Tips for WY & Tribal Systems: Follow-up to a Total Coliform Positive (TC+) or E. Coli (EC+) Sample
Tech Tip describing what to do in the event of a total coliform positive test result in drinking water collected from the distribution system.
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Chemical Manufacturing Sector Information
Learn about environmental resources for the chemical manufacturing sector.
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No Permit Needed for Emergency-Related Open Burning on Tribal Lands
This document is part of the NSR Policy and Guidance Database.