CA Food & Agric Code Section 35924.5

A county milk commission shall give reasonable notice to the public of its meetings, and shall hold its public hearings in public buildings. Members of the commission shall receive twenty-five dollars ($25) per diem for each day spent on official business of the commission, payable from the fees collected pursuant to this article. No member of the commission shall travel beyond the boundaries of the state on official business without prior approval of the county board of supervisors.