Learn the Issues
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Accounting tool to support federal reporting of hydrofluorocarbon emissions
This document provides technical documentation to support the HFC Tool.
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Fact Sheet: Final Rule 25 - Listing of Substitutes under the Significant New Alternatives Policy Program in Refrigeration, Air Conditioning, and Fire Suppression
Section 612 provides that EPA must prohibit the use of a substitute where EPA has determined that there are other available or potentially available substitutes that pose less overall risk to human health and the environment.
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Stationary Sources of Air Pollution
This web area catalogs emissions requirements for stationary sources of air pollution by categories recognized by the Clean Air Act.
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Energy and the Environment
Provides general information on energy resources and their environmental effects; how electricity is delivered and used; and related tools and EPA program links.
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Emissions Trading
Learn about emissions trading programs, also known as cap and trade programs, which are market-based policy tools for protecting human health and the environment by controlling emissions from a group of sources.
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Implementation of Oil and Natural Gas Air Pollution Standards
Implementation of Oil and Natural Gas Air Pollution Standards
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FACT SHEET: Reconsideration of Final Standards
Fact sheet with information about the reconsideration of final standards for stationary RICE.
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Basic Information for Stationary Engines
Learn more about what a stationary engine is and why EPA regulates air toxics emitted from these sources.
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First Clean Air Act Benefits and Costs Prospective Study - Press Release November 16, 1999
The economic value of the public health and environmental benefits that Americans enjoy from the Clean Air Act Amendments of 1990 exceed their costs by a margin of four to one, according to this EPA study released in 1999.
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Urban Waters - The Mystic River Watershed
Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Mystic River Watershed and nongovernmental organizations to improve the water quality of the Mystic River.
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Green Power Equivalency Calculator
Several different types of green power products are available. This page outlines some of the main distinction between product options.
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Green Power Equivalency Calculator - Calculations and References
Several different types of green power products are available. This page outlines some of the main distinction between product options.
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Handbook on Coral Reef Impacts: Avoidance, Minimization, Compensatory Mitigation, and Restoration
This Handbook provides a general summary of current avoidance, minimization, compensatory mitigation, and restoration strategies that may help address physical damage resulting from direct adverse impacts to coral reefs.
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Phase II of the Acid Rain Program
Learn about Phase II of the Acid Rain Program, including the benefits of reducing NOx, emission limits, compliance and deadlines, and opt-in source withdrawal.
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Air Quality Monitoring Plan Draft Template
Air Quality Management Plan Draft Template Subpage for Megacities
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Hazardous Air Pollutants
This area will provide an overview of hazardous air pollutants and EPA's approach to understanding and regulating them. The area will have access to regulations for industrial sources of air toxics.
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CSAPR Compliance Year 2017 NUSA NODAs
This page contains links to NUSA Notices of Data Availability for the CSAPR 2016 compliance year.
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Fact Sheet: Final Rule 26 - Listing of Substitutes under the Significant New Alternatives Policy Program in Commercial and Industrial Refrigeration
Under section 612 of the Clean Air Act, EPA reviews substitutes within a comparative risk framework. EPA lists these substitutes as acceptable, acceptable subject to use conditions, acceptable subject to narrowed use limits, or unacceptable (prohibited) fo
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Municipal Solid Waste Landfills: New Source Performance Standards (NSPS), Emission Guidelines (EG) and Compliance Times: Reconsideration and Stay of Effective Date
Letter to the petitioners, the agency said it also intends to issue a 90-day stay of the effectiveness of both the NSPS (subpart XXX) and the emission guidelines (subpart Cf).
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Emission Monitoring Regulatory Actions
Links to part 75 regulatory actions and recent rules