California Code, Government Code - GOV § 99109

(a) The commission may, in implementing and administering this title, consider whether and how proposed actions allow for rigorous evaluation, such as through experimental or quasi-experimental methods, of the effects of a program established pursuant to this title, including whether the program causes each of the following:

(b) Consistent with other laws, the commission may make data available to allow for the rigorous evaluation described in subdivision (a).