11445.50. (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 crossexamination is necessary for proper determination of the matter.
(c) The actions of the presiding officer under this section are not subject to judicial review.