The responsibilities of the Sheriffs Office Bureaus include providing general law enforcement services in the unincorporated communities of Marin County, maintaining the county jail, providing security to the Superior Court, operating a countywide communications division, performing death investigations under the purview of the Coroner, operating a documentary services division consisting of records, warrants, civil units, and more. Testing and Eligible List: Depending on the number of qualified applications received, the examination may consist of a highly qualified review, application screening, online assessment, written examination, oral examination, performance examination, or any combination to determine which candidates names will be placed on the eligible list.