Santa Clara Valley Open Space Authority OSA works to protect sensitive lands, preserve natural communities, and manage open space in ways that promote agriculture and compatible recreation. Also offering hikes and nature-oriented meetings – check the website for current listings. Website: www.openspaceauthority.orgEmail: info@openspaceauthority.orgPhone: 408 224-7476Mailing Address:6980 Santa Teresa Blvd, Ste 100San Jose, CA 95119Date Updated: 2/21/2015