(1) Method of filing. An auto transportation company may submit tariff and time schedule filings to the commission in person, electronically, by mail, or by fax. If an auto transportation company files by fax, the company must mail a hard copy on the same day as the fax transmission. Companies are encouraged to file their tariffs and time schedules electronically, according to the commission's policies and procedures.

(2) Transmittal letter. An auto transportation company must file a transmittal letter with each tariff or time schedule filing submitted to the commission.

(a) The transmittal letter must include at least the following:

(i) The name, certificate number, and trade names of the company;

(ii) A description of each proposed change in the tariff or time schedule and a brief statement of the reason for each change;

(iii) If the filing requires customer notice under the provisions of WAC 480-30-316, the transmittal may also include the information required by WAC 480-30-321; and

(iv) A contact person's name, mailing address, telephone number, fax number (if any), and email address (if any).

(b) Transmittal letters accompanying rate filings must also include the following:

(i) The percentage amount that rates will change if they become effective;

(ii) The amount revenue is expected to change if the proposed rates become effective.

(c) A company wanting confirmation that a hard copy tariff or time schedule filing was received must include two copies of the transmittal letter and a self-addressed, stamped envelope. The commission will stamp one copy of the letter and return it to the company as acknowledgement that the filing was received.

(3) Revised pages. Pages of the company's tariff affected by the tariff filing must include the appropriate reference marks indicating changes as provided in WAC 480-30-336.

(4) Additional documents required.

(a) Filing due to governmental, or other entity, action. If the filing results from action of another entity or governmental body, the company must file documentation of that action. For example: Notices of increased fees to use depots or stations.

(b) Tariff or time schedule filed by an agent. If the tariff or time schedule filing is made by a person other than an owner, partner, or corporate officer, the company must include with its filing a statement granting authority for that person to file on behalf of the company. The statement must be signed by an owner, partner, or corporate officer, and may be incorporated into the transmittal letter accompanying the filing.

(c) Rate increase filings. Rate increase filings must include work papers that support the requested increase. Work papers supporting a general rate increase as defined in WAC 480-30-421 must include the additional documentation described in WAC 480-30-426.