(a) This chapter shall not apply to any pretrial diversion or posttrial programs for the treatment of problem drinking or alcoholism utilized for persons convicted of one or more offenses under Section 23152 or 23153 or former Section 23102 of the Vehicle Code or to pretrial diversion programs established pursuant to Chapter 2.5 (commencing with Section 1000) of this title nor shall this chapter be deemed to authorize any pretrial diversion or posttrial programs for persons alleged to have committed violation of Section 23152 or 23153 of the Vehicle Code.
(b) The district attorney of each county shall review annually any diversion program established pursuant to this chapter, and no program shall continue without the approval of the district attorney. No person shall be diverted under a program unless it has been approved by the district attorney. Nothing in this subdivision shall authorize the prosecutor to determine whether a particular defendant shall be diverted.