Cal. Health & Safety Code § 25201.3

(a) A local agency shall not deem any of the following generators performing any of the following treatment activities to be a hazardous waste treatment facility for purposes of making a land use decision, and the department shall not require any of the following generators or facilities performing any of the following treatment activities to publish a notice regarding those activities:
1. (1) A facility operating pursuant to a permit-by-rule.
2. (2) A generator granted conditional authorization pursuant to this chapter for specified treatment activities.
3. (3) A generator performing conditionally exempt treatment pursuant to this chapter.
(b) For purposes of this section, “land use decision” means a discretionary decision of a local agency concerning a hazardous waste facility project, as defined in subdivision (b) of Section 25199.1, including the issuance of a land use permit or conditional use permit, the granting of a variance, the subdivision of property, and the modification of existing property lines pursuant to Title 7 (commencing with Section 65000) of the Government Code, and any local agency decision concerning a hazardous waste facility which is in existence and the enforcement of those decisions. This section does not limit or restrict the existing authority of a local agency to impose conditions on, or otherwise regulate, facilities, transportable treatment units or generators operating pursuant to a permit-by-rule, or a conditional authorization or conditional exemption pursuant to this chapter.