Collections and Lists
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Part 75 Emissions Monitoring Technical Questions and Answers
Provides clarification on the requirements of 40 CFR Part 75 through a series of questions and answers that can be used by units to monitor mass sulfur dioxide emissions, mass carbon dioxide emissions, nitrogen oxide rate and heat input.
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Variances and Exemptions Historical Documents- Public Input
This document contains the executive summary from the environmental and consumers stakeholder meeting on variances and exemption.
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Stage 1 and Stage 2 Supporting Documents for Primacy Agencies
The following documents provide compliance support for primacy agencies.
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Chapter Two of the SW-846 Compendium: Choosing the Correct Procedure
This document page displays the guidance chapters for SW-846 Test Methods
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Chapter One of the SW-846 Compendium: Project Quality Assurance and Quality Control
This document page displays the first chapter of SW-846 Test Methods
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Paper and Paperboard: Material-Specific Data
This page describes the generation, recycling, combustion with energy recovery, and landfilling of paper and paperboard materials, and explains how EPA classifies such material.
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Construction and Demolition Debris: Material-Specific Data
This page describes the generation, recycling, combustion with energy recovery, and landfilling of Construction and Demolition (C&D) materials, and explains how EPA classifies such material.
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Stage 1 and Stage 2 Compliance Help for Primacy Agencies
These guidance will help EPA regions and states with implementation of the rule’s provisions.
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Chemical Contaminant Rules Compliance for Community Water System Owners and Operators
This page contains information on chemical contaminant rules that the regulated community can use to aid their compliance efforts.
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Primacy Enforcement Responsibility for Public Water Systems
This page contains the EPA's revisions and policies on primacy.
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Science Topics
EPA is one of the world’s leading environmental and human health research organizations. Science provides the foundation for Agency policies, actions, and decisions made on behalf of the American people.
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SO2 NAAQS Implementation Training and Assistance for State and Local Air Agencies
Presentations and training help air agencies understand the National Ambient Air Quality Standards (NAAQS) for sulfur dioxide, how to engage the public in local emissions reduction programs, successful state implementation plan (SIP) development, and more.
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New England Air Quality Programs
Learn more about New England Air Quality Programs.
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Massachusetts NPDES Permits
NPDES Permits for Massachusetts
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Brayton Point Station Power Plant, Somerset, MA: Final NPDES Permit
Information and documents on the agreement reached between EPA and Dominion Energy for Dominion's Brayton Point Station power plant in Somerset, Massachusetts.
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Soak Up the Rain: Green Roofs
Learn about green roofs and how they are being used to reduce runoff while reducing building noise and energy usage.
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Past Members of the Acute Exposure Guideline Levels (AEGL) Committee (1996-2011)
Lists the NAC FACA committee members that contributed to the development of AEGLs
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CAA Permitting in Your Region
Map and text selections for air permitting detail in EPA's regions.
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Nitrogen Dioxide Designations - Kentucky State Recommendations and EPA Response
2010 Nitrogen dioxide (NO2) standards. Kentucky state recommendations and EPA response.
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EPA Participatory Science Across the U.S.
This page provides a short overview of the citizen science activities happening across EPA's regions and offers links to more resources.