Chemical & Toxic Substances

Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category: Unmanaged Combustion Residual Leachate

Extending the Compliance Deadline for the PFOA and PFOS Maximum Contaminant Levels; Notice of Public Hearing

Rescission of Regulatory Determinations and Removal of Related Provisions for Four PFAS Substances (PFHxS, PFNA, HFPO–DA (GenX), and the Mixture of These Three PFAS Plus PFBS)

Availability of Draft Toxicological Profile for Xylene

Environmental Impact Statements; Availability, etc.

EPCRA Hazardous Chemical Inventory Reporting Requirements: Conformity with the 2024 OSHA Hazard Communication Standard

Hearings, Meetings, Proceedings, etc.: Science Advisory Committee on Chemicals Peer Review; 1,2-dichloropropane (1,2-DCP); 1,1,2-trichloroethane (1,1,2-TCA); trans-1,2-dichloroethylene (tDCE); etc.

Clean Air Act Operating Permit Program: Petition for Objection to State Operating Permit for Lubrizol Corp., Harris County, TX

Air Quality State Implementation Plans; Approvals and Promulgations: Oregon; Update to Materials Incorporated by Reference

Clean Air Act Operating Permit Program: Petitions for Objection to State Operating Permit for TPC Group, LLC, Harris County, TX

Clean Air Act Operating Permit Program: Petition for Objection to State Operating Permit for ExxonMobil Corp., Harris County, TX

Clean Air Act Operating Permit Program: Petition for Objection to State Operating Permit for Intercontinental Terminals Co., LLC, Harris County, TX