Councilmember John Dell'Osso was first elected to the Council in November 1994 and served as Mayor in 1996. In May 2011, he was appointed to fill a vacancy and was subsequently elected to a full four-year term in November of 2012, serving as Mayor again in 2014. As Mayor in 2014, he was the Chair of the Sonoma County Mayors and Councilmembers Association. Councilmember Dell'Osso has lived in Cotati since 1986 and is a strong advocate of community service and involvement. He received four years of A grades from the Sonoma County Conservation Action for environmental voting and listening to the public. Prior to his appointment to Council he served on the City's Environmental Advisory Commission, (1990 - 1994, serving as Chair twice); Cotati Chamber of Commerce, Board Member, (1999); Member, Rohnert Park – Cotati Library Foundation, (1998 – 2007); Rancho Cotati Little League, Board Member, (2001 – 2006) including President; Santa Rosa JC Agriculture/Natural Resources Advisory Committee, Board Member, (2001 – present); Friends of San Pablo Bay National Wildlife Refuge, Board Member, (2003 – 2007); Rancho Cotate High School Project Graduation, Board Member (President), (2005 – 2011); Sonoma County Library Commission, Commissioner, (2007 – 2012); Deputy Director, Region 9, National Association for Interpretation, (2008 – 2010). Additionally, the Cotati Chamber of Commerce named Councilmember Dell'Osso co-Citizen of the Year in 2001. Councilmember Dell'Osso has a career of over 30 years with the National Park Service. He has worked at Point Reyes National Seashore since graduating with a B.S. in Environmental Planning and Management from UC Davis. He currently serves as the Chief of Interpretation and Resource Education and as the Public Information Officer for the park. He has also served as the Acting Superintendent at four National Park units. He has written and produced publications for the U.S. Congress on topics such as wilderness and resource protection. He is a graduate of the National Park Service Leadership Academy. As a member of a team, he received the U.S. Department of the Interior, National Partners in Conservation Award in 2009. Councilmember Dell'Osso's prime areas of focus include a strong economy, environmental stewardship, community services and a safe community where people know their neighbors. He is an advocate for parks and open spaces for recreation and solitude, sustainable building practices, and recreational programs for youth.