20:10:13:99Schedule O-1 -- Derivation of increased rates.

If, after the initial rate filing under this chapter the commission orders it to be provided, schedule O-1 shall show the derivation of each of the increased rates. If the increased rates are predicated on costs as classified and allocated, all calculations involved in derivation of the rates shall be shown. If in computing the increased rates weight is given in whole or in part to value of service, competition, historical revenue pattern, or the like, it shall be indicated.

Source: 2 SDR 90, effective July 7, 1976; 12 SDR 151, 12 SDR 155, effective July 1, 1986.