(b) Each endorsee must have a seal or a stamp, authorized by the board, which seal or stamp shall include the endorsee's name and endorsement license number and the words "Professional Surveyor SU".
(c) All final survey documents prepared by a licensee or an endorsee shall be signed and stamped with the licensee's or the endorsee's seal or stamp, or an electronic signature, seal or stamp may be affixed.
(d) It is unlawful for a person who is not licensed or not endorsed to affix a signature and stamp or seal on a document.