Cal. HSC § 105191

(a) The Legislature finds and declares all of the following: (1) There are some employers who use or disturb very small amounts of lead in ways that pose a very minimal potential for lead poisoning of employees. (2) These users of de minimis amounts of lead are not currently eligible for a waiver of the Occupational Lead Poisoning Fee. (b) The State Department of Health Services shall adopt regulations that define a de minimis amount of lead use or disturbance. Any employer who is within the requirements of this definition shall be exempt from payment of the Occupational Lead Poisoning Fee.