Board of Directors

LUCKY CHESTNUT

President

Lucky was hired by the Office of the Sheriff in 2004 and is currently a Sergeant. He has held positions in every detention facility, patrol, the contract city of Orinda, Investigations, and the Sheriff’s SWAT team. He was elected to the DSA’s Board of Directors in 2009, became Vice President in 2015, and President in 2024. Since 2009, he has participated in several contract negotiations, assisted in bringing the Probation Department into the DSA, handled numerous grievances and proudly represented our members.

Jeff Rodier

VICE PRESIDENT

Jeff joined the Office of the Sheriff in 2004 and is currently assigned to the Investigation Division, supervising the Violence Suppression Unit. He was elected to his second term on the DSA’s Board of Directors in January, 2024. He is a veteran of the US Air Force.

ERINN RILEY

SECRETARY

Erinn was hired by the Officer of the Sheriff in 1997 as a Dispatcher and his currently a Dispatch Supervisor in the Communications Center. She has held positions as the Training Supervisor, Training Instructor the Sheriff SWAT team as a Tactical Dispatcher and the Peer Support Team. In 2006 Erinn was elected to the DSA’s Board of Directors and the Secretary position. Erinn serves as the Director-at-Large for the DSA for the Police Officers Research Association of California (PORAC) and is the Secretary for the Bay Area Chapter of PORAC. Prior to joining the Office of the Sheriff, Erinn was a dispatcher for the City of Davis Police Department.

CODY CASTELLUCCIO

TREASURER

Cody was hired by the Office of the Sheriff in 2015 and is currently assigned to the Recruiting Unit. He has worked assignments in both detention and patrol, including a Resident Deputy at Delta Station. Cody is a member of the Sheriff’s SWAT team and is was elected to the DSA’s Board of Directors in 2023. Prior to joining the Office of the Sheriff, Cody served in the United States Army.

BRANDON Battles

DIRECTOR

Bio coming soon.

JAMIE ENEA

DIRECTOR

Jaime was hired by the Office of the Sheriff in 2013 as a Dispatcher. She is a Communications Training Officer, participated in the Dispatch Recruiting Program, and is a US Air Force veteran. Jaime was elected to the DSA’s Board of Directors in 2023.

CRISTINA HERNANDEZ

DIRECTOR

Cristina Hernandez was hired with the Probation Department in 2002 as a Deputy Probation Officer. She started in Juvenile Probation in General Supervision Unit working cases in Bay Point, Pittsburg, Antioch, and Concord. She worked in the Sex Offender Unit for two and half years in both Central and East County. She is currently assigned to General Adult Supervision working cases in Walnut Creek, Danville, San Ramon, Blackhawk. She has been a Director on the DSA Board since February of 2018 after the retirement of the prior director. She was voted back on the Board in 2023. She has been part of the Negotiations Team in the last two negotiations with the County.

Brian Holland

DIRECTOR

Bio coming soon.

SAMUEL JONES

DIRECTOR

Bio coming soon.

JAMES MATTHEWS

DIRECTOR

Bio coming soon.

PATRICK MAZERSKI

DIRECTOR

Patrick joined the Office of the Sheriff in 2011 and is currently assigned to the Investigation Division’s Special Victims Unit, where he leads the High Tech Crimes Unit. He has previously worked held Detention, Classifications, Patrol, Discovery Bay Resident Deputy, and is a senior member of the Sheriff’s SWAT team. He was elected to his second term on the DSA’s Board of Directors in January 2024.

NICK RAMIREZ

DIRECTOR

Bio coming soon.

MATTHEW RIDGERS

DIRECTOR

Bio coming soon.

DANNY STARK

DIRECTOR

Danny was hired by Contra Costa County Probation in 2012 as a Juvenile Institution Officer. He works at both Orin Allen Youth Rehabilitation Facility and Juvenile Hall as a JIO. He was promoted to an Institutional Supervisor in 2021 at the Orin Allen Youth Rehabilitation Facility, after its closure in 2022 he was transferred back to Juvenile Hall to supervise the Secure Track youth of the Briones Youth Academy. This unit houses all serious offenders of Contra Costa County as well as all the youth who returned after the closure of the Division of Juvenile Justice. Danny was elected to the DSA’s Board of Directors one 2022.

TODD WARD

DIRECTOR

Bio coming soon.