California Code, Government Code - GOV § 33017

The legislative body of the municipal corporation with whom such statement is filed shall, each year at the same time and in the same manner as all other municipal taxes are levied, levy a special tax in such amount as will be clearly sufficient to produce the total amount shown in the statement filed with said legislative body by the board of administration of the retirement plan. Such special tax shall be in addition to all other taxes authorized by law to be levied by said municipal corporation.