Laws & Regulations

Method 325B - Volatile Organic Compounds from Fugitive and Area Sources: Sampler Preparation and Analysis

Promulgated CFR Test Method 325B Volatile Organic Compounds from Fugitive and Area Sources: Sampler Preparation and Analysis.

Method 5F - Particulate Matter Fluid Catalytic Cracking Unit

CFR Promulgated Test Method 5F PM Fluid Catalytic Cracking Unit (Particulate Matter)

Method 7D - Nitrogen Oxide - Ion Chromatography

CFR Promulgated Test Method 7D Determination of nitrogen oxide emissions from stationary sources - Alkaline-permanganate/ion chromatographic method

Technical Information Document 013 - Summary of Method 204 Package Comments

Technical Information Document 014 - Evaluation of Sampling Method for Acetonitrile Emissions

Method 7B - Nitrogen Oxide - Ultraviolet Spectrophotometry

CFR Promulgated Test Method 7B Determination of Nitrogen Oxide Emissions From Stationary Sources (Ultraviolet Spectrophotometric Method)

Method 28 WHH for Measurement of Particulate Emissions and Heating Efficiency of Wood-Fired Hydronic Heating Appliances

This test method applies to wood-fired hydronic heating appliances

EPA Collaboration on International Air Pollution Standards for Aircraft

EPA has collaborated with the United Nation’s International Civil Aviation Organization (ICAO) to set a timeframe for initiating the U.S. domestic regulatory process for addressing greenhouse gas emissions from aircraft under the Clean Air Act.

Agenda for the Delaware River Urban Waters Federal Partnership Regional Meeting April 4, 2014

Agenda overview for the Delaware River Urban Waters Federal Partnership Regional Meeting Academy of Natural Sciences in Philadelphia on April 4, 2014.

Intalco to pay $5 million penalty for major Clean Air Act violations at former Ferndale smelter

EPA News Release: Intalco to pay $5 million penalty for major Clean Air Act violations at former Ferndale smelter

Release Date: July 23, 2024

Proposed Nutrient Criteria for Missouri Lakes and Reservoirs

EPA proposes a rule establishing federal Clean Water Act (CWA) criteria for nutrients (i.e., total nitrogen, total phosphorus and chlorophyll a) to protect aquatic life, recreational, and drinking water uses for Missouri’s lakes and reservoirs.

Water Quality Standards: Establishment of Revised Numeric Criteria for Selenium for the San Francisco Bay and Delta, State of California

EPA is proposing to revise the current federal Clean Water Act selenium water quality criteria applicable to the salt and estuarine waters of San Francisco Bay and Delta.

Withdrawal of Certain Federal Criteria for California

EPA final rule to amend the federal regulations to withdraw certain federal water quality criteria for lead, chlorodibromomethane, and dichlorobromomethane applicable to California.

Water Quality Standards Regulations: U.S. Virgin Islands

Information related to Water Quality Standards for U.S. Virgin Islands.

Aluminum Aquatic Life Criteria Applicable to Oregon Fresh Waters - Final Rule

EPA has finalized federal aluminum water quality criteria for fresh waters under the state of Oregon’s jurisdiction to protect aquatic life from toxic effects.

Federal Water Quality Standards Applicable to Maine

EPA withdraws federal Clean Water Act water quality standards that would apply to certain waters under the state of Maine’s jurisdiction.

Volunteer Estuary Monitoring: A Methods Manual

Virtual Public Hearing on EPA's proposal to Strengthen Standards for Synthetic Organic Chemical Plants and Group I & II Polymers and Resins Plants.

On April 6, 2023, the U.S. Environmental Protection Agency (EPA) announced a proposal to significantly reduce emissions of toxic and other harmful air pollution from chemical plants, including the highly toxic chemicals ethylene oxide (EtO) and chloroprene

SBAR Panel: Revisions to the Air Emissions Reporting Requirements (AERR)

Information for self-nominations to serve as a small entity representative to EPA's SBAR Panel on Revisions to the Air Emissions Reporting Requirements (AERR)

Final Federal Implementation Plan for Oil and Natural Gas True Minor Sources and Amendments to the Federal Indian Country Minor NSR Rule, May 12, 2016