Laws & Regulations

Chromium Compounds: National Emission Standards for Hazardous Air Pollutants for Chemical Manufacturing Area Sources

This NESHAP applies to facilities using pressure or thermal treatment processes involving wood preservatives containing chromium, arsenic, dioxins, or methylene chloride

Engine Test Cells/Stands: National Emission Standards for Hazardous Air Pollutants (NESHAP)

Learn about the MACT regulations for engine test cells and stands. Find the fact sheet, rule history, rule summary and rule text on this page.

Glass Manufacturing Area Sources: National Emission Standards for Hazardous Air Pollutants (NESHAP)

learn about the NESHAP for glass manufacturing area sources by reading the rule summary, the rule history, the code of federal regulations text, the fact sheet and compliance information

Ferroalloys Production Facilities: National Emission Standards for Hazardous Air Pollutants for Area Sources

Includes rule history, summary and Federal Register citations for 40 CFR 63 subpart YYYYYY.

Hospital Ethylene Oxide Sterilizers: National Emission Standards for Hazardous Air Pollutants (NESHAP)

Learn about the NESHAP for hospital ethylene oxide sterilizers. Find the rule history information, federal register citations, legal authority, and related rules as well as a rule summary.

Inorganic Arsenic Emissions from Primary Copper Smelters: National Emissions Standards for Hazardous Air Pollutants

Includes rule summary, rule history and Federal Register citations.

Inorganic Arsenic Emissions from Arsenic Trioxide and Metallic Arsenic Production Facilities: National Emission Standards for Hazardous Air Pollutants

Includes rule history and summary for 40 CFR 61 Subpart P.

Mercury Production: National Emissions Standard for Hazardous Air Pollutants

Rule history, summary and Federal Register citations for 40 CFR 61 Subpart E.

Inorganic Arsenic Emissions from Glass Manufacturing Plants: National Emission Standards for Hazardous Air Pollutants (NESHAP) -- 40 CFR Part 61 Subpart N

Learn about the NESHAP for inorganic arsenic from glass manufacturing plants by reading the rule summary, the rule history, the code of federal regulations text, additional resources and related rules

Metal Fabrication and Finishing Source Categories: National Emission Standards for Hazardous Air Pollutants (NESHAP) Area Source Standards

Includes rule history, rule summary and compliance documents for 40 CFR 63 Subpart XXXXXX.

Paints and Allied Products Manufacturing: National Emission Standards for Hazardous Air Pollutants (NESHAP) for Area Sources

Read the text of this NESHAP regulation on Paints and Allied Products manufacturing. Find the rule summary, and rule history, effective dates, and the federal register citations and fact sheets on the rule.

Aluminum, Copper, and Other Nonferrous Foundries: National Emission Standards for Hazardous Air Pollutants (NESHAP) for Area Sources

Includes rule history, rule summary, Federal Register citations and compliance documents for 40 CFR 63 Subpart ZZZZZZ.

2012 Final Rules for Oil and Natural Gas Industry

Consolidated Human Activity Database (CHAD)

The CHAD database includes nearly 180,000 individual study days of detailed human behavior, with each day broken down into individual hours and activity types.

Final Decision to Retain the Ozone National Ambient Air Quality Standards

fact sheet ozone NAAQS reveiw

Fact Sheets and Additional Information Regarding the Primary National Ambient Air Quality Standards (NAAQS) for Nitrogen Dioxide (NO2)

Find tools for primary standards for Nitrogen Dioxide, maps of monitoring areas, an overview of the proposal, monitor requirements, design values for counties, and a presentation on the 2010 NO2 primary NAAQS revision.

Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2) Secondary Standards - Policy Assessments from Current Review

The policy assessment (PA) presents an analysis of the scientific basis for policy options for consideration by senior EPA management prior to rulemaking

Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2) Secondary Standards - Response to Comments on 2024 Proposed Decision

Responses to Significant Comments on the 2020 Proposed Decision on the National Ambient Air Quality Standards for Particulate Matter

Consent Decree Establishing Schedule for Final ISA, and Proposed and Final Rulemakings for NO2 and SO2 Primary NAAQS Review, April 2017

Enhancing the Quality and Oversight of Federal Facilities Data for Environmental Cleanup

This memorandum establishes specific actions that Regions must implement to enhance the quality and oversight of data-collection and environmental decision-making processes.