(a) All licenses shall expire biennially on December 31st of each even numbered year, and may be renewed upon payment of a renewal fee and completion of continuing education require- ments as stated in these rules and regulations.

The Board staff shall, no later than September 1st of each even-numbered year, mail a notice of renewal along with a renewal form. A new certificate or other evidence of current licensure may be mailed to all persons completing renewal requirements as stated herein.

(b) An expired license may be renewed within four (4) years of the date of expiration by paying the current renewal fee in addition to any delinquent fees. An expired license beyond four (4) years of the date of expiration requires a new application for a license, subject to the qualifications and standards as set forth in this Article.

(c) The Board may waive the payment of the registration renewal fee of a licensee if the licensee is called to active duty outside of Guam with any branch of the United States armed services, not to exceed four (4) years or the duration of a national emergency, whichever shall be longer.