EPA announced the availability of acute freshwater aquatic life screening values for 6PPD and its transformation product 6PPD-quinone. 

EPA entered into a CERCLA settlement agreement with LPC Holdings, Inc., concerning recovery of cleanup costs at the Aberdeen Contaminated Groundwater Superfund Site in Aberdeen, North Carolina. 

EPA proposed to enter into individual CERCLA settlements with seven additional parties concerning the recovery of cleanup costs at Bennett Landfill Fire Site in Chester, South Carolina. 

EPA determined that Alabama’s coal combustion residuals permit program does not meet the standard for approval under RCRA. 

FWS initiated five-year status reviews under the ESA for 59 animal and plant species.

FERC proposed to amend regulations to clarify that for all proceedings before the Commission that require a water quality certification pursuant to §401(a)(1) of the CWA, the reasonable period of time during which the certifying authority may act on the water quality certification request is one year from the certifying authority’s receipt of the request.

FWS determined endangered species status under the ESA for the Guadalupe fatmucket, Texas fatmucket, Guadalupe orb, Texas pimpleback, Balcones spike, and false spike, determined threatened species status for the Texas fawnsfoot, and designated approximately 1,577.5 river miles in total as critical habitat for the seven species of freshwater mussels in central Texas. 

United States v. Union Carbide Corp., No. 1:24-cv-01463 (D. Colo. May 23, 2024). Under a proposed consent decree, settling CERCLA defendants must pay $600,000 to reimburse response costs incurred at the Uravan Uranium Project Superfund Site in Montrose County, Colorado, and to comply with institutional controls and other requirements for property owned within the site. 

United States v. PSF, Inc., No. 3:24-cv-00112 (D. Alaska May 24, 2024). Under a proposed consent decree, settling CWA defendants that allegedly violated the conditions and limitations of their NPDES permits at their facilities in Valdez and King Cove, Alaska, must perform injunctive relief and pay $750,000 in civil penalties. 

NMFS announced its 90-day finding on a petition to list the Delaware River population of Atlantic sturgeon as an endangered distinct population segment (DPS) of Atlantic sturgeon under the ESA and to designate critical habitat for the DPS, finding the petition does not present substantial scientific or commercial information indicating action may be warranted and denying the petition.