In September 2021, the Third District Court of Appeal in Sierra Watch v. Placer County reversed a judgement upholding Placer County’s Environmental Impact Report (EIR) for a resort development project in the Olympic (formerly Squaw) Valley area. In the published portion of the opinion, the court found errors in the EIR’s description of the environmental setting and related water and air quality impact analyses, as well as in the EIR’s analysis and mitigation for construction noise impacts.…