Learn the Issues
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EPA's Principles of Scientific Integrity
Outline of the EPA's scientific integrity policy.
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Tribal Water and Natural Resources Conservation Guide
Landing page for the new Tribal Water and Natural Resources Conservation Guide
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SFTF Report: Recommendation 20 Findings - Third Party Oversight of Aspects of PRP-lead Cleanups
Memorandum outlining findings and recommendations for task force recommendation 20 on oversight of PRP-lead cleanups
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U.S. Government GMI Accomplishments: 2016 Annual Report
The U.S. Government’s Global Methane Initiative Accomplishments report 2016
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U.S. Government’s International Methane Mitigation Activities: 2021 Accomplishments
The U.S. Government’s Global Methane Initiative Accomplishments ANNUAL REPORT (2021)
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U.S. Government’s International Methane Mitigation Activities: 2020 Accomplishments
The U.S. Government’s Global Methane Initiative Accomplishments ANNUAL REPORT (2020)
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Ruckelshaus Takes Steps to Improve Flow of Agency Information [Fishbowl Policy]
This is a memorandum signed by Administrator Ruckelshaus.
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LaPlace, Louisiana - Background Information
Information about chloroprene and the Denka Performance Elastomer facility
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U.S. Court of Appeals—D.C. Circuit Upholds EPA's Action to Reduce Greenhouse Gases under the Clean Air Act
View greenhouse gas court decisions.
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Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2019
View or download the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2019, including individual chapters and annexes.
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How are Oxides of Nitrogen (NOx) defined in the NEI?
For all source categories, NOx is compiled from emissions measurements that express NOx mass based on the molecular weight of nitrogen dioxide (NO2), which is 46. Even though emission streams initially consist mainly of NO from most sources, this expression of NOx by NO2 MW is appropriate due to the…
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Small Entity Compliance Guide for Area Source Boilers: National Emission Standards for Hazardous Air Pollutants for Area Sources: Industrial, Commercial, and Institutional Boilers
Small Entity Compliance Guide for Area Source Boilers: National Emission Standards for Hazardous Air Pollutants for Area Sources: Industrial, Commercial, and Institutional Boilers
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Cross Border Contingency Plans for U.S.-Mexico Sister Cities
Agreements between US and Mexico sister cities regarding response in the event of hazardous material emergency.
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Class I Redesignation
Re-designation is one of the tools available to tribes (and states) under the CAA to afford special protection to air quality.
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Region 5 Harmful Algal Bloom Clean Water Act/Safe Drinking Water Act Workshop and Public Meeting Chicago, IL
Information related to EPA Region 5 HABs Workshop.
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Public Hearing on EPA's MATS for Power Plants: Proposed Reaffirmation of the Appropriate and Necessary Finding
Information about EPA's public hearing for the proposed reaffirmation of MATS appropriate and necessary finding
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Memorandum of Understanding Regarding Interagency Coordination and Collaboration for the Protection of Tribal Treaty Rights
Interagency Memorandum of Understanding (MOU) affirming protection of tribal treaty rights and similar tribal rights relating to natural resources when federal action is taken. It will be updated as additional federal agencies become signatories.
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Accomplishments of the Landfill Methane Outreach Program
Landfill gas energy projects mitigate direct methane emissions from landfills and reduce indirect carbon dioxide emissions by displacing energy generated from the burning of fossil fuels. Learn about the emission reductions LMOP has helped generate.
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LMOP Timeline
View a timeline of major milestones related to the landfill gas energy industry in the United States and the Landfill Methane Outreach Program.
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Tribal Treaty Rights
EPA guidance for discussing treaty rights and responses to comments on draft EPA guidance for discussing tribal treaty rights