(a) The commission, on its own motion or on the request of a party to the agreement or another affected person, may conduct a hearing on an agreement for which certification is sought under Section 35.062.(b) A request for a hearing or a commission decision to hold a hearing must be made not later than the 90th day after the date the agreement is submitted to the commission. Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.