On December 11, 2019, the California Supreme Court granted review of the Third District’s decision in County of Butte v. Department of Water Resources, dismissing a CEQA challenge to DWR’s relicensing application to the Federal Energy Regulatory Commission (FERC) for the Oroville Dam on the basis that the claim was preempted by federal law. The

In a long-awaited decision, on December 24, 2018 the California Supreme Court in Sierra Club v. County of Fresno (S219783) affirmed, in part, and reversed, in part, the Fifth District Court of Appeal’s decision concerning a challenge to the adequacy of an EIR prepared for the Friant Ranch retirement community (“Project”). Employing a de novo standard of review, the Court found that the Project EIR is inadequate as a matter of law because the EIR did not make a reasonable effort to connect the Project’s air quality impacts to specific health consequences (or explain why it is not feasible to do so). The Court also upheld the lead agency County of Fresno’s discretion to substitute equally effective or more superior future mitigation measures and adopt mitigation measures that do not reduce the Project’s significant and unavoidable impacts to a less-than-significant level. This decision poses significant hurdles for project proponents going forward with new, heightened requirements for EIR analysis of environmental and health impacts and a more scrutinizing, independent legal standard of review for challenges to the adequacy of an EIR.
On October 2, after waiting over three-and-a-half years, the California Supreme Court finally heard oral arguments in Sierra Club et al. v. County of Fresno et al. (Case No. S219783). This case, which challenges an EIR prepared for the Friant Ranch retirement community in Fresno County, raises far-reaching and consequential CEQA questions, namely, the standard of review for the adequacy of an EIR’s discussion of required CEQA topics and the level of analysis needed to identify a project’s effect on human health.
The United States Supreme Court will not be taking up the California Supreme Court’s July 2017 

On January 11, the California Supreme Court granted review of the Fourth Appellate District’s decision in Union of Medical Marijuana Patients, Inc. v. City of San Diego (2016) 4 Cal.App.5th 103. The two issues to be decided by the Court are as follows: