Cal. Pub. Resources Code § 43208
Notwithstanding any other provision of law, except as provided in Chapter 6.5 (commencing with Section 25100) of Division 20 of the Health and Safety Code, and Section 731 of the Code of Civil Procedure, no local governing body may enact, issue, enforce, suspend, revoke, or modify any ordinance, regulation, law, license, or permit relating to a facility that accepts both hazardous wastes and other solid wastes and which meets any of the criteria enumerated in subdivision (a) of Section 25148 of the Health and Safety Code, and was operating as of May 1, 1981, pursuant to a valid solid waste facility permit, so as to prohibit or unreasonably regulate the operation of, or the disposal, treatment, or recovery of resources from solid wastes at any such facility. However, nothing in this section authorizes an operator of such a facility to violate any term or condition of a local land use or facility permit or any other provision of law not in conflict with this section.
Ca. Pub. Res. Code § 43208