The Mill Valley Middle School Modernization Project proposes to demolish the existing 1960s era buildings at the preferred site of the existing school campus and replace them with a modern, two-story classroom building. Before construction begins, the Mill Valley School District (MVSD) will conduct a site investigation, called a Preliminary Endangerment Assessment or PEA, to evaluate historical environmental issues at the campus, and complete an Environmental Impact Report (EIR) in accordance with the California Environmental Quality Act (CEQA).