89 FR 26620
EPA proposed to revise the existing secondary sulfur dioxide NAAQS, to retain the existing secondary standards for nitrogen oxides and particulate matter, and to revise the data handling requirements for the proposed secondary sulfur oxide NAAQS.
89 FR 26115
SIP Proposal: Ohio (particulate matter rules).
Leigh v. Raby
A district court granted in part and denied in part animal rights groups' motion for summary judgment in a challenge to BLM's recent roundup of wild horses at the Pancake Complex in eastern Nevada. The groups argued BLM violated the Wild Free-Roaming Horses and Burros Act (WHA) by failing to approve...
Friends of Animals v. U.S. Bureau of Land Management
A district court granted in part and denied in part summary judgment for an animal rights group in a lawsuit concerning BLM's adoption of four 10-year management plans for controlling wild horse populations in certain herd management areas. The group argued BLM exceeded its statutory authority under...
Ohio v. Environmental Protection Agency
The D.C. Circuit upheld EPA's 2022 decision to reinstate a prior waiver of federal preemption of two California regulations concerning automobile emissions under the CAA. States and fossil fuel groups challenged the regulations—a standard limiting greenhouse gas emissions and a requirement that a ...
89 FR 25810
SIP Approval: Virginia (second maintenance plan for the 1997 eight-hour ozone NAAQS in the Fredericksburg area).