|(a) The certificate of registration shall be valid until the last day of the twelfth month following the date of issuance of the certificate of registration. At least one month in advance of the date of the expiration, the board shall notify each firm holding a certificate of registration of the date of the expiration and the amount of the fee that shall be required for its renewal for one year. The renewal notice shall be mailed to the last address provided by the firm to the board. The certificate of registration may be renewed by completing the renewal application and paying the annual registration renewal fee set by the board. It is the sole responsibility of the firm to pay the required renewal fee prior to the expiration date, regardless of whether the renewal notice is received. (b) A certificate of registration which has been expired for less than one year may be renewed by completing the renewal statement sent by the board and payment of two (2) times the normal renewal fee. When renewing an expired certificate of registration, the authorized official of the firm shall submit a written a statement of whether engineering services were offered, pending, or performed for the public in Texas during the time the certificate of registration was expired. (c) If a certificate of registration has been expired for more than one year, the firm must re-apply for certification under the laws and rules in effect at the time of the new application and shall be issued a new certificate of registration serial number if the new application is approved. (d) The renewal fee will not be refunded.