(1) A copy of so much of all schedules, including schedules of joint rates and charges, as the Public Utility Commission deems necessary for the use of the public, shall be made available to the public.
(2) Except as provided in ORS 759.410 (8), copies of all new schedules shall be made readily accessible to the public as required by the commission 30 days prior to the time the schedules are to take effect, unless the commission prescribes a shorter time.