The document provides an update on Hangar 1 at the former Naval Air Station in Moffett Field. It discusses the background and history of PCB contamination at the site. Testing identified PCBs and other hazardous materials in the building materials of Hangar 1. Several removal alternatives are being evaluated to address the contamination, including covering, coating, removing siding, and demolition of the structure. A structural analysis is underway to help evaluate the alternatives and ensure structural integrity is maintained. A revised report will be released for public comment once the analysis is incorporated.