Laws & Regulations

Announcement: Municipality of Ponce Consent Decree

The United States Department of Justice (DOJ) has reached a proposed settlement with the Municipality of Ponce to resolve Clean Water Act (CWA) violations associated with the municipality’s separate storm sewer systems (MS4) and stormwater

Procedure 3 Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources

Promulgated quality assurance Procedure 3 Quality Assurance Requirements for Continuous Opacity Monitoring Systems at Stationary Sources

Performance Specification 1 for Opacity

Performance Specification 1 Specifications and test procedures for continuous opacity monitoring systems in stationary sources.

Nitrogen Dioxide (NO2 Primary) Air Quality Standards - Documents from Review Completed in 2018

NO2 Primary Documents from Review Completed in 2010

Study on the Impacts of Compliance with the ECA Fuel Sulfur Limits on U.S. Coastal Shipping

The Environmental Protection Agency (EPA) hold a public workshop to engage individuals and companies in the development of a study of the impacts on that sector of the North American Emission Control Area fuel sulfur limits for ships.

Performance Specification 18 for Gaseous Hydrogen Chloride

Promulgated Performance Specification 18 – Specifications and Test Procedures for Gaseous Hydrogen Chloride Continuous Emission Monitoring Systems at Stationary Sources.

Lumped Parameter Model (LPM) for Light-Duty Vehicles

EPA’s Lumped Parameter Model (LPM) is a free, desktop computer application that estimates the effectiveness (CO2 Reduction) of various technology combinations or “packages,” in a manner that accounts for synergies between technologies.

Proposed Consent Decree to Complete the Anti-backsliding Study for Renewable Fuel Volumes

EPA has announced a proposed consent decree that would require EPA to complete the “anti-backsliding study” for Renewable Fuel Volumes

Proposed Rule and Related Materials for Control of Emissions of Air Pollution From Nonroad Diesel Engines Control of Air Pollution From Aircraft and Aircraft Engines; Proposed Emission Standards and Test Procedures

EPA is proposing to adopt emission standards and related provisions for aircraft gas turbine engines with rated thrusts greater than 26.7 kilonewtons. These engines are used primarily on commercial passenger and freight aircraft.

Proposed Rule and Related Materials for Revised Carbon Monoxide (CO) Standard for Class I and II Nonhandheld New Nonroad Phase 1 Small Spark-Ignition Engines

Information for the proposed rule and related materials for Revised Carbon Monoxide (CO) Standard for Class I and II Nonhandheld New Nonroad Phase 1 Small Spark-Ignition Engines.

Notice of Proposed Rulemaking for Grain Sorghum Oil Pathways

Periodic Reviews of the Renewable Fuel Standard Program

EPA Approved Statutes and Regulations in the North Carolina SIP

EPA Approved Statutes and Regulations in the North Carolina SIP as of 9/1/22

Notice of Willingness to Participate in Funding Opportunities of Other Federal Agencies

OTAQ’s Participation Policy allowing researchers to collaborate with other federal and non-federal non-profit institutions; background, responsibilities, approval process, ethical and procedural guidelines are included. (EPA publication # EPA-420-F-20-011)

Proposed Rule for Fuel Economy Regulations for Automobiles: Technical Amendments and Corrections

Proposed amendments and corrections to 40 CFR Parts 86 and 600. November 25, 2009.

Significant Impact Levels for Ozone and Fine Particles

Guidance on SILs for Air permitting

Participate in the Permitting Process

Provides information on how the public can comment on PSD permits, NSR regulations and actions to approve state and local programs.

Proposed Rule and Related Materials for Heavy-Duty Engine and Vehicle, and Nonroad Technical Amendments

EPA is proposing to amend provisions in the Medium- and HeavyDuty Greenhouse Gas Emissions and Fuel Efficiency final rule issued on September 15, 2011.

North Carolina SIP: Subchapter 2Q Air Quality Permit Requirements: Section NCAC 2Q.800: Exclusionary Rules

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section NCAC 2Q.800: Exclusionary Rules as of 10/01/23

North Carolina SIP: Subchapter 2Q Air Quality Permit Requirements: Section NCAC 2Q.300: Construction And Operating Permits

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section NCAC 2Q.300: Construction And Operating Permits as of 10/01/23

Final Rule for Fuel Economy Labeling of Motor Vehicles: Revisions To Improve Calculation of Fuel Economy Estimates

The U.S. Environmental Protection Agency (EPA) is finalizing new test methods for calculating the fuel economy estimates, which are posted on window stickers of new cars and trucks.