(a)
The presiding officer may deny use of the informal hearing procedure, or may convert an informal hearing to a formal hearing after an informal hearing is commenced, if it appears to the presiding officer that cross-examination is necessary for proper determination of the matter and that the delay, burden, or complication due to allowing cross-examination in the informal hearing will be more than minimal.(b)
An agency, by regulation, may specify categories of cases in which cross-examination is deemed not necessary for proper determination of the matter under the informal hearing procedure. The presiding officer may allow cross-examination of witnesses in an informal hearing notwithstanding an agency regulation if it appears to the presiding officer that in the circumstances cross-examination is necessary for proper determination of the matter.(c)
The actions of the presiding officer under this section are not subject to judicial review.
Source:
Section 11445.50, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV§ionNum=11445.50..