Cal. Code Regs. tit. 17, § 91220
When there is reasonable cause to believe that a violation has occurred, is occurring, or will occur, the Executive Officer may test directly without prior notice and without allowing such testing to be conducted by an independent tester.
Note: Authority cited: Sections 39600, 39601 and 41512, Health and Safety Code. Reference: Sections 41510, 41511 and 41512, Health and Safety Code.