Companies may change filed tariffs or time schedules by one of two methods:

(1) Issuing revised pages to the tariff or time schedule. A revised page must have the same page number as the page it cancels. For example: "1st revised page 1" cancels "Original page 1."

(2) Issuing a complete new tariff or time schedule. Each of the pages in a new tariff or time schedule must be identified as an original page. For example: "Original Title Page," "Original Page 1," "Original Page 2," and so on.

(3) Tariff and time schedule changes must be filed with the commission under the provisions of WAC 480-30-381.