The San Mateo County Board of Supervisors has appointed John Maltbie as acting county manager, effective December 1, 2011. Maltbie served as San Mateo county manager for 20 years until his retirement in December 2008. As acting county manager, he will have overall management responsibility for the county’s $1.75 billion budget. Meanwhile, the board will conduct a nationwide search for a new county manager. That search is expected to take several months and no deadline has been set to fill the position. A subcommittee of Supervisor Adrienne J. Tissier and Supervisor Dave Pine will negotiate a contract that comes before the full board at a special meeting on Tuesday, November 29 at 9 a.m. Maltbie succeeds David S. Boesch.