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4/24/2026

PHMSA Amends Procedural Regulations for Pipeline Safety

The Pipeline and Hazardous Materials Safety Administration (PHMSA) is amending its procedural regulations to require the posting of requests for regulatory interpretations on its public website and to provide an opportunity for the public to comment.

4/24/2026

Pipeline Safety: Standards Update-ASTM A372/A372M

The Pipeline and Hazardous Materials Safety Administration (PHMSA) updates its regulations to incorporate an updated edition of the ASTM A372/A372M standard, maintaining or improving public safety and reducing compliance burdens.

4/24/2026

Pipeline Safety: Standards Update-ASTM D2564

The Pipeline and Hazardous Materials Safety Administration (PHMSA) updates its regulations to incorporate an updated edition of the ASTM D2564 industry standard, maintaining public safety and reducing regulatory burdens.

4/24/2026

Pipeline Safety: Standards Update-NFPA 58

The Pipeline and Hazardous Materials Safety Administration (PHMSA) updates its regulations to incorporate an updated edition of the National Fire Protection Association's (NFPA) industry standard NFPA 58, Liquefied Petroleum Gas Code, to maintain public safety and reduce regulatory burdens.

4/24/2026

Pipeline Safety: Standards Update-ASTM A53/A53M

The Pipeline and Hazardous Materials Safety Administration (PHMSA) updates its regulations to incorporate an updated edition of the ASTM A53/A53M industry standard, maintaining or improving public safety and reducing regulatory burdens.

4/24/2026

Pipeline Safety: Standards Update-NFPA 59

The Pipeline and Hazardous Materials Safety Administration (PHMSA) updates its regulations to incorporate an updated edition of the NFPA 59 industry standard, maintaining or improving public safety and reducing compliance burdens.

4/24/2026

Pipeline Safety: Timeframe To Make RMVs Operational

The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes to amend the required timeframes for making rupture-mitigation valves and alternative equivalent technology operational on gas transmission, hazardous liquid, and carbon dioxide pipelines.

4/24/2026

Pipeline Safety: Hazardous Liquid Valve Maintenance Schedule

The Pipeline and Hazardous Materials Safety Administration proposes to allow hazardous liquid and carbon dioxide pipeline operators to determine a valve inspection schedule with a maximum interval of 1 year, not exceeding 15 months.

4/24/2026

PHMSA Proposes Regulatory Amendments for Administrative Challenges

The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes to adopt regulatory amendments to align procedures governing post-issuance administrative challenges of final rules issued by its Office of Pipeline Safety (OPS) and Office of Hazardous Materials Safety (OHMS).

4/24/2026

Pipeline Safety: Adjust Annual Report Deadlines

The U.S. Pipeline and Hazardous Materials Safety Administration proposes to extend annual report deadlines for gas pipeline operators and adjust the National Pipeline Mapping System information submission deadline.

4/24/2026

Pipeline Safety: Adjustment to OPID Notifications for Construction

The Pipeline and Hazardous Materials Safety Administration (PHMSA) proposes to increase the monetary threshold for Operator Identification Number notifications for certain construction and maintenance tasks on gas and hazardous liquid and carbon dioxide pipeline facilities.

4/24/2026

One-Page Document on Passenger Rights

The U.S. Department of Transportation requires covered air carriers to submit a one-page document summarizing passenger rights and post it on their websites within 90 days.

4/24/2026

Self-Regulatory Organizations; Cboe EDGX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Rule 21.17 To Adopt a Wide Market Protection Mechanism Designed To Reduce the Risk of Orders Executing at Extreme or Adverse Prices When the National Best Bid and Offer (“NBBO”) Is Determined To Be Wide

Cboe EDGX Exchange, Inc. proposes to amend Rule 21.17 to adopt a wide market protection mechanism to reduce the risk of orders executing at extreme or adverse prices when the National Best Bid and Offer (NBBO) is determined to be wide.

4/24/2026

Self-Regulatory Organizations; Cboe C2 Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Rule 5.34 To Adopt a Wide Market Protection Mechanism Designed To Reduce the Risk of Orders Executing at Extreme or Adverse Prices When the National Best Bid and Offer (“NBBO”) Is Determined To Be Wide

Cboe C2 Exchange, Inc. proposes a rule change to adopt a wide market protection mechanism to reduce the risk of orders executing at extreme or adverse prices when the National Best Bid and Offer (NBBO) is determined to be wide.

4/24/2026

Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend Rule 21.17 To Adopt a Wide Market Protection Mechanism Designed To Reduce the Risk of Orders Executing at Extreme or Adverse Prices When the National Best Bid and Offer (“NBBO”) Is Determined To Be Wide

Cboe BZX Exchange, Inc. has filed a proposed rule change to amend Rule 21.17 and adopt a wide market protection mechanism to reduce the risk of orders executing at extreme or adverse prices when the National Best Bid and Offer (NBBO) is determined to be wide.

4/24/2026

Airworthiness Directives; Bombardier, Inc., Airplanes

The FAA is adopting a new airworthiness directive for certain Bombardier, Inc. Model BD-700-1A10 and BD-700-1A11 airplanes to correct approach speed adders and landing distance factors in the airplane flight manual.

4/24/2026

EPA Issues Significant New Use Rules on Certain Chemical Substances

The US Environmental Protection Agency (EPA) is issuing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances, requiring persons to notify EPA at least 90 days before commencing manufacture or processing.

4/24/2026

EPA Proposes to Deny Petition to Change Regulation of Phosphogypsum Under RCRA

The Environmental Protection Agency (EPA) is proposing to deny a petition from the Center for Biological Diversity and People for Protecting Peace River to change the regulation of phosphogypsum under the Resource Conservation and Recovery Act (RCRA). The EPA is soliciting public comment on this proposed denial.

4/24/2026

NRC Amends Regulations for Research and Development Facilities

The U.S. Nuclear Regulatory Commission (NRC) is revising its regulations to align with the Nuclear Energy Innovation and Modernization Act of 2019 and the Accelerating Deployment of Versatile, Advanced Nuclear for Clean Energy Act of 2024, governing financial criteria for research and development facilities.