Cal. Government Code § 20432.5

(a) “Local sheriff” also means a regularly employed marshal of Shasta County or of a judicial district of Shasta County. “Local sheriff” also means a regularly employed deputy marshal of Shasta County or of a judicial district of Shasta County, or a district attorney investigator of Shasta or Butte County whose principal duties are to investigate crime and criminal cases, if the deputy marshal or district attorney investigator is a member of the deputy sheriffs’ bargaining unit in the county or the judicial district. (b) An officer or employee who is a local sheriff as defined in this section is not a county peace officer as defined in Section 20436 or 20437. (c) This section does not apply to the employees of any contracting agency nor to the agency, unless and until the contracting agency elects to be subject to this section by amendment to its contract with the board, made as provided in Section 20474, or by express provision in its contract with the board. (d) Within 90 days of notice to the county that a risk pool has been established pursuant to Section 20225.5, which makes available the same service retirement formula provided to local sheriff members in the county, the members included in the local sheriff member classification pursuant to this section shall be included in one of the available risk pools.