In Friends of the College of San Mateo Gardens v. San Mateo Community College District, (2016) 1 Cal.5th 937, the California Supreme Court resolved some issues about using the environmental review that was conducted for a previous project for a new or significantly changed project. Essentially, the Court held that an an approving agency can rely on an old EIR as the environmental review for a new project as long as the old EIR retains some informational value to the analysis of the new project.