The Sierra Club, National Headquarters The Sierra Club formulates, promotes, and follows legislation pertaining to environmental issues. SF Bay Local Contact URL sanfranciscobay.sierraclub.org/chapter/chapter_home.htm Website: www.sierraclub.orgEmail: information@sierraclub.orgPhone: 415 977-5500Mailing Address:85 2nd St., 2nd FloorSan Francisco, CA 94105Date Updated: 11/17/2010