Charges imposed by County for recovery and/or movement of vessels shall be in accordance with the “Schedule of Charges for Services Rendered and Supplies Furnished by the Harbor Patrol” as approved by the Board of Supervisors of the County of Los Angeles on November 30, 1965, or as subsequently amended, and whenever a vessel is impounded or held for safekeeping, there shall be in addition a charge for storage at the rate of five dollars ($5.00) per day.