Cal. Pub. Res. Code § 42963

(a) This chapter, or any regulations adopted pursuant to Section 42966, is not a limitation on the power of a city, county, or district to impose and enforce reasonable land use conditions or restrictions on facilities that handle waste or used tires in order to protect the public health and safety or the environment, including preventing or mitigating potential nuisances, if the conditions or restrictions do not conflict with, or impose less stringent requirements than, this chapter or those regulations. However, this chapter, including any regulations that are adopted pursuant to Section 42966, is intended to establish a uniform statewide program for the regulation of waste and used tire haulers that will prevent the illegal disposal of tires, but which will not subject waste and used tire haulers to multiple registration or manifest requirements. Therefore, any local laws regulating the transportation of waste or used tires are preempted by this chapter.

(b) Upon request of a city, county, or city and county, the board may designate, in writing, that city, county, or city and county to exercise the enforcement authority granted to the board under this chapter. A city, county, or city and county designated by the board pursuant to this subdivision shall follow the same procedures set forth for the board under this article. This designation shall not limit the authority of the board to take action it deems necessary or proper to ensure the enforcement of this chapter.