OFFICE OF THE MAYOR SAN FRANCISCO EDWIN M. LEE MAYOR September 19, 2016 Administrator Gina McCarthy US. Environmental Protection Agency 1200 Avenue, NW. Washington, DC 20460 DearAdministrator McCarthy: It has come to our attention that, due to ongoing investigations regarding the integrity Of data delivered by Tetra Tech to the Navy, the transfer of Navy property at Hunters Point Naval Shipyard to the City and County of San Francisco may be delayed. The safety of our residents and workers is paramount, and we are committed to a thorough cleanup at the Hunters Point Naval Shipyard. This cleanup must be done in a way that protects the public health of our residents and the environment, and we are very supportive of the Environmental Protection Agency and the California Department Of Toxic Substance Control undertaking a full review of any questionable data in furtherance of comprehensive cleanup. San Francisco will not accept the transfer Of any land until federal and state regulators are satisfied that the land is clean and safe, and our own Department of Public Health validates that decision. The environmental cleanup Of the property is a critical first step in the process of developing Hunters Point Shipyard a project that will deliver desperately needed housing and long? overdue public benefits to the Hunters Point community. For that reason, we are requesting a . briefing with senior Environmental Protection Agency leadership, confidential if necessary, so that we may better understand the scope and timelines Of the investigations, and any potential impacts to the overall schedule for the delivery of these public benefits. I of Edwin M. Malia Cohen Mayor, City 5' unty of San Francisco Supervisor, District 10 Cc: The Honorable Nancy Pelosi, Democratic Leader, US. House of Representatives The Honorable Dianne Feinstein, United States Senator, California 1 DR. CARLTON B. GOODLETT PLACE, ROOM 200 SAN FRANCISCO, CALIFORNIA 94102?4681 TELEPHONE: (415) 554-6141 The Honorable Barbara Boxer, United States Senator, California Alexis Strauss, Acting Region 2X Administrator, U.S. Environmental Protection Agency Barbara Lee, Director, California Department of Toxic Substances Control Lawrence Lansdale, Environmental Director, Base Realignment and Closure Program, Naval Facilities Engineering Command Barbara Garcia, Director, San Francisco Department of Public Health