California Code, Health and Safety Code - HSC § 11832.6

(a) A certification shall be valid for a period of two years from the date of issuance.

(b) The department may renew a certification for subsequent two-year periods if, prior to the expiration date on the certification, an alcohol or other drug program submits a completed written application for renewal, pays the required fees, and remains in compliance with this chapter and any regulations adopted pursuant to this chapter, as determined by the department.

(c) Failure to submit to the department the required written application for renewal, or failure to submit to the department the required fees prior to the expiration date on the certification, shall result in the automatic expiration of the certification at the end of the two-year period.