Cal. Pub. Res. Code § 5090.78

The department shall adopt guidelines it determines as necessary to carry out the purposes of this chapter. Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code does not apply to the adoption of guidelines pursuant to this section. The department shall develop a process for public comment and review of the guidelines that involves three public hearings in three different parts of the state before the adoption of those guidelines.