(1) A change in or addition to a tariff shall be known as an amendment, and excepting amendments to tariffs of less than three pages, and amendments to tariffs in loose-leaf form, shall be published in a supplement to the tariff.

(2) No supplement shall be issued on tariffs containing less than three pages or to tariffs in loose-leaf form except for the purpose of canceling the tariff or unless specifically authorized by the commission.

(3) Tariffs issued in loose-leaf form can only be amended by issuing revised pages to the tariff except as provided in subsection (2) of this rule. A revised page must carry the same page number as is carried by the page which it cancels. For example, 1st revised page 1 cancels original page 1.

(4) When a participating party is eliminated by supplement or revised page, such supplement or revised page must also provide for cancellation of rates or fares in connection with that party.

(5)(a) Supplements to a tariff shall be numbered consecutively. Each supplement shall specify on its title page the supplement or supplements or tariffs which it cancels and shall also show what supplements contain actual changes from the rates, fares, rules or regulations in the original tariff.

(b) Purely intrastate supplements to a tariff having interstate application may be assigned the number of the last interstate supplement with capital letters of the alphabet (used consecutively) added, such as "23A," except that if any intrastate supplements are issued prior to Supplement No. 1, such intrastate supplements will be identified with capital letters of the alphabet used consecutively, such as "A," "B," etc.

(6) Except as provided in subsections (9), (10) and (11) of this rule, the following is the number of effective supplements permitted to any tariff:

In addition to the above, not to exceed 2 purely intrastate supplements may be in effect to tariffs which have interstate application.

In connection with the number of supplements issued as exceptions to the rule, reference marks must be used and explained on title pages to indicate the nature of the supplements filed under such authority. The reference marks and explanations must also be shown on every subsequent supplement showing that such supplements are still effective. The term "cancels conflicting portions" must not be used but cancellations must be specific.

(7) Every publication which contains rates, fares, rules, or regulations effective upon a date different from the general effective date of such publication must show on its title page the following notation:

"Effective . . . . . , 19 . . . (except as otherwise provided herein)" or "except as provided in (item or page)."

(8) Matter brought forward without change from one supplement to another must be designated "reissued" and must show the number of the supplement from which it was reissued.

(9) When the name of a company is changed, or when its operating control is transferred to another, the company which will thereafter operate the properties shall file and post new tariffs in the name of the new company; except that where the company name remains unchanged or where tariffs consist of 5 or more pages, or where three or more tariffs are involved, or where there are powers of attorney or concurrences outstanding, an adoption notice, given a "tariff" number may be filed, reading as follows:

ratifies, and makes its own, in every respect as if the same had been originally filed and posted by it, all tariffs, rules, notices, concurrences, traffic agreements, divisions, authorities, powers of attorney, or other instruments whatsoever, filed with the Washington Utilities and Transportation Commission by the

prior to ..... the beginning of its possession. By this tariff it also adopts and ratifies all supplements or amendments to any of the above tariffs, etc., which it has heretofore filed with said Commission.

In addition to the above adoption notice the new company shall immediately file a supplement to each of the tariffs covered by the adoption notice, reading as follows:

Effective (here insert date shown in the adoption notice) this tariff, or as amended, became the tariff of the (Name of new company) as per its adoption notice No. . . . . .

Such supplements issued under authority of this rule must contain no other matter, must bear reference to this rule and must be designated by a reference mark as provided in subsection (6) of this rule.

Similar adoption notice must immediately be filed by a receiver, when he assumes possession and control of a company.

Except where concurrences and powers of attorney are filed with the Interstate Commerce Commission, concurrences and powers of attorney adopted by a company or receiver must within one hundred twenty days be replaced and superseded by new concurrences and powers of attorney issued and numbered in the series of the new company or receiver. Concurrences and powers of attorney which will not be replaced by new issues must be regularly revoked on the notice and in the manner prescribed in WAC 480-149-150.

(10)(a) Upon receipt of an order of suspension of any tariff publication or portion thereof, the carrier or agent who filed such publication shall immediately file with the commission a supplement, not bearing any effective date, which shall contain a reproduction of the pertinent portions of the commission's order of suspension (including the paragraph prohibiting changes in the suspended matter), followed by a statement that by reason of the commission's order (i) the use and application of the suspended publication or portion thereof (which must be identified with certainty) is either indefinitely deferred or deferred for the . . . . . period prescribed in the commission's suspension order and (ii) the schedules which were to be changed by the suspended publication (which schedules must be identified with certainty) will remain in effect and will not be changed so long as effectiveness of the suspended matter is deferred (if deferred only for the term of the commission's order the date must be specified), except by order or special permission of the commission.

(b) If the responsible carrier or publishing agent has elected to file a supplement deferring the suspended matter only for the period prescribed by the commission's order, and if prior to the expiration of that order the commission formally or informally requests that a further deferment be made, the carrier or publishing agent may, on the authority of this permission, issue a supplement effecting such further deferment. Also, after the expiration of the period prescribed by the commission's order, the carrier or publishing agent may, when requested by the commission and on the authority of this permission, issue a supplement further postponing the effective date of the suspended matter. Supplements issued should be filed on statutory notice if practicable and otherwise on shorter notice, but the notice shall be as long as time will reasonably permit and in no event less than one day. Where the effectiveness of matter originally suspended by the commission has been voluntarily postponed, beyond the term of the commission's order, no change may be made during the period of such voluntary postponement in the tariff matter which was originally held in force by the commission's suspension order, except by order or special permission of the commission.

(c) When the commission suspends an entire supplement to a tariff, or portions of a tariff or of a supplement to a tariff, the commission's rule as to the volume of supplemental matter which the effective supplements in the aggregate may contain is not waived, except that a supplement containing suspended matter will not be counted against the number of effective supplements, or the volume of supplemental matter permitted to such tariff under WAC 480-149-110(6) provided all matter in such supplement, except the suspended portions thereof, are reissued in or specifically canceled by a subsequent supplement.

(d) When a tariff, any portion of which is under suspension, is canceled the new tariff may either:

(i) Cancel the previous tariff "except portions under suspension in Cause No. . . . . . , viz. (Identifying the suspended portion by item and page number)," or

(ii) Cancel the previous tariff entirely and bring forward without change the matter held in force by the order of suspension, followed immediately by the matter under suspension. The matter held in force by the order of suspension must be identified as such and shown as expiring with the date to which the suspended matter has been postponed. The suspended matter immediately following must likewise be identified as such and shown as effective on the day following the expiration of the matter held in force by the order of suspension. When the effective date of suspended matter has been indefinitely deferred the new tariff must state that fact by appropriate language.

(iii) When a supplement which is suspended in part is reissued, such reissue shall cancel the supplement containing the suspended matter except portions under suspension in Cause No. . . . . .

(e) A suspended rate, charge, classification, regulation, or practice may not be changed or withdrawn except by order or special permission of the commission, nor may any change be made in a rate, charge, classification, rule, regulation, or practice which is contained in effect as a result of such suspension except under order or special permission of the commission.

(f) When the commission vacates an order of suspension as of a date earlier than the date to which suspended, or when the responsible carrier or agent has deferred the effective date of the suspended matter under authority of this permission and the commission, after the expiration of its order of suspension, finds the suspended matter justified, the responsible carrier or agent may file with the commission on one day's notice, unless otherwise directed by the commission, a supplement stating the date upon which the suspended matter will become effective.

(g) Every suspension, vacating and cancellation supplement issued under authority of this rule must bear on its title page the following notation: "Issued under authority of WAC 480-149-110(10). Tariff Circular 6, and in compliance with Order No. . . . . of the Washington Utilities and Transportation Commission of (date) ."

Such supplements will not be counted against the number of effective supplements permitted under subsection (6) of this rule. All such supplements must be given the same general distribution as the tariff or supplement affected.

(11) Except as to loose-leaf tariffs and tariffs containing less than three pages one additional supplement may be issued to any tariff in excess of the number allowed by WAC 480-149-110(6) for the purpose of establishing rates, fares, classifications, rules, or regulations in compliance with a decision or order of the commission in a formal case. Only one such supplement may be in effect at any one time and it shall bear on its title page the following notation in addition to showing reference to the opinion or order:

"This supplement is issued under authority of WAC 480-149-110(11) of Tariff Circular 6 and will be included in and canceled by the next regular supplement filed to this tariff."