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Browse 15,074 regulations from 36 regulators

2,983 updated in the last 30 days. Public corpus — no signup required to read.

Showing 1–12 of 12 regulations

US10 CFR10 CFR Part 51Secondary legislationIn force

Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions

10 CFR Part 51 establishes environmental protection regulations for the Nuclear Regulatory Commission's domestic licensing and regulatory functions. The regulations implement Section 102(2) of the National Environmental Policy Act of 1969 and apply to NRC licensing proceedings for production, utilization, and materials facilities, excluding export licensing and foreign environmental effects. Key definitions include construction activities, previously disturbed areas, and NRC organizational roles.

5 hours ago
US10 CFR10 CFR Part 1022Secondary legislationIn force

Compliance with Floodplain and Wetland Environmental Review Requirements

10 CFR Part 1022 establishes DOE procedures for complying with Executive Orders 11988 and 11990 on floodplain management and wetland protection. It requires DOE to evaluate proposed actions in floodplains or wetlands, incorporate flood risk reduction and wetland preservation into planning and decision-making, ensure structures meet FEMA flood insurance standards, and provide public notice and opportunity for review of projects affecting these sensitive areas.

11 hours ago
US10 CFR10 CFR Part 1021Secondary legislationIn force

National Environmental Policy Act Implementing Procedures

The Department of Energy establishes implementing procedures for compliance with the National Environmental Policy Act (NEPA), defining key terms related to hazardous substances, contaminants, and pollutants under CERCLA. The regulation authorizes categorical exclusions for departmental actions that do not normally have significant environmental effects, requiring documented determinations to be posted publicly within two weeks unless classified or confidential business information requires protection.

11 hours ago
US14 CFR14 CFR Part 36Secondary legislationIn force

Noise Standards: Aircraft Type and Airworthiness Certification

14 CFR Part 36 establishes noise standards for aircraft type certification and airworthiness certification in the United States. It applies to subsonic transport category large airplanes, jet airplanes, propeller-driven small and commuter airplanes, helicopters, tiltrotors, and Concorde aircraft. Applicants must demonstrate compliance with specified noise limits and stage classifications (Stage 1 and Stage 2) when seeking type certificates, standard airworthiness certificates, or restricted category airworthiness certificates.

2 days ago
US14 CFR14 CFR Part 34Secondary legislationIn force

Fuel Venting and Exhaust Emission Requirements for Turbine Engine Powered Airplanes

14 CFR Part 34 establishes fuel venting and exhaust emission requirements for turbine engine powered airplanes certified under US airworthiness standards. The regulation defines key terms and classifications for aircraft gas turbine engines (turboprops, turbofans, turbojets) and outlines compliance frameworks, including provisions for derivative engines, exemptions, and emission measurement systems aligned with ICAO Annex 16 standards.

2 days ago
US14 CFR14 CFR Part 150Secondary legislationIn force

Airport Noise Compatibility Planning

14 CFR Part 150 establishes procedures and standards for airport noise compatibility planning. It requires public-use airport operators to develop noise exposure maps and compatibility programs, defines measurement methodologies for airport noise, and identifies land uses compatible with various noise exposure levels. The regulation provides technical assistance to airports and local authorities for noise planning implementation but does not constitute FAA financial commitment or determine land use acceptability under state or local law.

4 weeks ago
US14 CFR14 CFR Part 161Secondary legislationIn force

Notice and Approval of Airport Noise and Access Restrictions

14 CFR Part 161 establishes notice and approval procedures for airports implementing noise and access restrictions on aircraft operations under the Airport Noise and Capacity Act of 1990. The regulation prescribes requirements for Stage 2 and Stage 3 aircraft restrictions, including notice procedures, analysis requirements, FAA review and approval processes, and definitions of key terms such as airport operators, aircraft operators, and noise metrics like day-night average sound level (DNL).

4 weeks ago
US10 CFR10 CFR Part 500Secondary legislationIn force

Definitions

This regulation establishes definitions for terms used in the Powerplant and Industrial Fuel Use Act of 1978 and related DOE regulations. Key definitions include 'alternate fuel' (electricity or fuels other than natural gas or petroleum, including coal, biomass, solar, geothermal, and waste-derived fuels), 'applicable environmental requirements' (federal and state standards for emissions and waste disposal), and administrative terms such as 'action,' 'affiliate,' and 'aggrieved person' for purposes of DOE proceedings.

2 months ago
US10 CFR10 CFR Part 300Secondary legislationIn force

Voluntary Greenhouse Gas Reporting Program: General Guidelines

This regulation establishes the Voluntary Reporting of Greenhouse Gases Program under the Energy Policy Act of 1992, setting procedures and requirements for entities to submit annual reports of greenhouse gas emissions, reductions, and sequestration activities. Reporting entities must file entity statements, use approved calculation methods, maintain records, and obtain certifications. Entities may report emissions back to 1990 and reductions back to 1991. Registration of reductions requires achievement after 2002 and compliance with entity-wide emission inventory quality standards, with different requirements for large and small emitters.

2 months ago
USEPA40 CFR 60 OOOOcGuidanceIn force

Emission Guidelines for Existing Sources in the Oil and Natural Gas Sector (Subpart OOOOc)

Emission guidelines that states must follow when developing plans to limit methane emissions from existing oil & gas sources.

10 months agoeff.
USEPA89 FR 16280Final ruleIn force

Standards of Performance for New, Reconstructed, and Modified Sources in the Oil and Natural Gas Sector (Subpart OOOOb)

Final rule tightening methane and VOC standards on new, reconstructed, and modified oil & gas facilities, including super-emitter response programme.

10 months agoeff.
USBLM89 FR 25378Final ruleIn force

Waste Prevention, Production Subject to Royalties, and Resource Conservation

Updates rules on flaring, venting, and royalty-bearing methane losses from onshore federal and tribal oil & gas leases.

1 year agoeff.