Regulated Community

Light-duty Vehicle Greenhouse Gas Program Technical Amendments

EPA finalizes two technical corrections to the Light-duty Vehicle Greenhouse Gas (GHG) Emissions Standards Regulations.

External Resources for Laws and Regulations

Online resources from other agencies such as the Government Publishing Office and U.S. Congress, as well as Cornell University, can further assist with learning about EPA regulations and locating official documentation such as Federal Register notices.

CAA Permitting in EPA's Mid-Atlantic Region

Air permitting in EPA's Mid-Atlantic region, Region 3; serving Delaware, D.C., Maryland, Pennsylvania, Virginia and West Virginia

Implementation of the 1997 and 2006 Particulate Matter (PM2.5) National Ambient Air Quality Standards (NAAQS)

learn about the implementation rules for the 2006 PM NAAQS by reading the summary, the rule history, and additional documents like fact sheets and court opinions

Unconventional Oil and Gas Extraction Effluent Guidelines

Overview and documents for the Unconventional Oil and Gas Extraction Pretreatment Standards final rule (6/28/2016) and related notices. 40 CFR Part 435, Subpart C.

Steam Electric Power Generating Effluent Guidelines Questionnaire

Overview and documents for the 2010 questionnaire sent to steam electric power plants

Effluent Guidelines

Effluent guidelines are national standards for wastewater discharges to surface waters and municipal sewage treatment plants. We issue the regulations for industrial categories based on the performance of treatment and control technologies.

1997 and 2006 Fine Particulate Matter National Ambient Air Quality Standards (NAAQS) Nonattainment Actions

Read about the relevant nonattainment actions pertaining to the implementation of the 2006 PM NAAQS. Find the text of the rules, fact sheets, docket folders, and supporting documents.

Sources Registered Under the FIP for New and Modified True Minor Oil and Natural Gas Sources in Region 8 Indian Country

The sources on Indian country reservation lands in Region 8 that are registered under the Federal Implementation Plan (FIP) for New and Modified True Minor Oil and Natural Gas Sources.

Sources Approved for Coverage under the Spark Ignition Engines General Permit in Region 8

The sources on Indian country reservation lands that the Region 8 has approved for coverage under the General Air Quality Permit for New and Modified Minor Source Stationary Spark Ignition Engines in Indian Country (SI Engines General Permit).

Nevada National Pollutant Discharge Elimination System (NPDES) Permits

In Nevada, EPA’s Pacific Southwest (Region 9) issues all NPDES permits for any discharges on tribal lands. All other NPDES permits are issued by the Nevada Division of Environmental Protection (NDEP).

Hawai'i National Pollutant Discharge Elimination System (NPDES) Permits

EPA's Pacific Southwest (Region 9) issues all NPDES permits for any discharges into federal ocean waters in Hawai'i. All other NPDES permits are issued by the Hawai'i Department of Health.

Arizona Tribal Lands National Pollutant Discharge Elimination System (NPDES) Permits (Excluding Navajo Nation)

In Arizona, EPA's Pacific Southwest (Region 9) issues all NPDES permits for discharges on tribal lands. All other permits are issued by the Arizona Department of Environmental Quality.

Industrial, Commercial, and Institutional Area Source Boilers: National Emission Standards for Hazardous Air Pollutants (NESHAP)

learn about the regulations for boilers and process heaters for area sources and subpart JJJJJJ. Read the rule summary, rule history, fact sheets docket documents, and additional resources.