California Code, Public Resources Code - PRC § 3401

(a) The proceeds of charges levied, assessed, and collected pursuant to this article upon the properties of every person operating or owning an interest in the production of a well shall be used exclusively for the support and maintenance of the department charged with the supervision of oil and gas operations, for the State Water Resources Control Board and the regional water quality control boards for their activities related to oil and gas operations that may affect water resources, and for the support of the State Air Resources Board and the Office of Environmental Health Hazard Assessment for their activities related to oil and gas operations that may affect air quality, public health, or public safety.

(b) Notwithstanding subdivision (a), the proceeds of charges levied, assessed, and collected pursuant to this article upon the properties of every person operating or owning an interest in the production of a well undergoing a well stimulation treatment, may be used by public entities, subject to appropriation by the Legislature, for all costs associated with both of the following: