In California Coastkeeper v. State Lands Commission, the Third District Court of Appeal upheld the State Lands Commission’s decision to prepare a supplemental environmental impact report (EIR) for a desalination plant in Huntington Beach, overturning an earlier trial court ruling that invalidated the EIR.  Limited changes to a desalination project were proposed in order to comply with desalination-related amendments to the State’s Ocean Plan.  Because the prior EIR retained informational value, and the proposed changes to the Project were minor, it was appropriate for the Commission, in its capacity as a responsible agency, to prepare a supplemental EIR under the California Environmental Quality Act (CEQA).  After initially releasing its opinion informally, the Court on May 7, 2021, certified the opinion for publication.