Cal. Pub. Util. Code § 730.8

Whenever a state agency files with the commission an application for an increase in rates or fares or for any change in the level of service for passenger transportation by a railroad corporation and the state agency has prior to the application held a public hearing on the matter which the commission finds to be complete and adequate, the commission may determine not to hold any further hearing on the matter and in this event shall approve, modify and approve as so modified, or disapprove the application within 90 days of the date of filing with the commission.