Captain Bill Duncan began his 40-year law enforcement career as a Correctional Officer for the California Department of Corrections (CDC) in 1970. He promoted through the custodial ranks to Captain and through the administrative ranks to Associate Warden and Chief Deputy Warden, until he was ultimately appointed by Governor Pete Wilson as Warden at the California Mens Colony in San Luis Obispo. Captain Duncan served as Warden for ten and one-half years before promoting to Deputy Director in the CDC Headquarters, where he was responsible for providing oversight to all the state prisons and camps. After working eight different prisons and correctional facilities with every security level of inmate, Captain Duncan retired in August of 2003. Immediately after retirement, he was appointed as the Assistant Director at Claremont Custody Center, where he served until his current appointment on October 30, 2006.
Captain Bill Duncan is assigned as Commander for the Adult Detention Division, which includes the Men’s Jail, the Honor Farm, the Public Safety Center, the Court Services Unit and the Civil Unit.