The Seventh Circuit upheld a lower court's preliminary injunction compelling a PRP to complete the remediation work concerning PCB contamination at the Fox River in Wisconsin that was scheduled for this year. The PRP has performed a significant amount of cleanup at the site.

The Fifth Circuit vacated EPA's disapproval of Texas's flexible permit program under the CAA. Texas submitted the program to EPA as a revision to its SIP and as a new feature of the state's minor new source review (NSR) regime.

The Supreme Court of Hawaii vacated and remanded the interim instream flow standards set by Hawaii's Commission on Water Resource Management for the Waihe'e River and the Waiehu, 'Iao, and Waikapu streams, collectively referred to as Na Wai 'Eha, or "the four great waters