With respect to any proceeding in which the arbitration panel makes valuation determinations in advance of the termination or expiration of the franchise, the same panel shall be available to receive and determine values for any additions to, replacements of or other acquisitions of property tentatively elected to be purchased which have occurred subsequent to the award made pursuant to Section 5.28.640 of this chapter. Such determinations shall be initiated by written notice mailed to the arbitration panel by the franchisee and filed with the clerk of the board of directors of the cable television commission, shall be governed by all standards, procedures and other provisions in Section 5.28.580 of this chapter through this section, and written recital thereof shall be mailed to the franchisee, commission and its assignee (if any) not later than ninety (90) calendar days following the date of mailing of the notice initiating the determination. No such notice shall be mailed or filed later than one hundred twenty (120) calendar days prior to the date of expiration or termination of the franchise. (Prior code § 20.03.260)