(1) Every licensed landscape architect must have a seal that contains the name of the landscape architect, the landscape architect's Montana license number, the signature of the licensed landscape architect, and the words "LICENSED LANDSCAPE ARCHITECT, STATE OF MONTANA."

(2) For the purpose of sealing printed drawings, specifications, and other appropriate documents, each landscape architect must obtain an embossing or rubber stamp and a reproduction facsimile of the seal to be used on documents prepared by or under the supervision of a licensed landscape architect. The seal or reproducible facsimile must be applied on all original drawings to produce legible reproduction on all copies or prints made from the drawings.

(3) A signature is an original manual signature of the landscape architect or a digital signature. A digital signature must either have an electronic authentication process attached or must be logically associated with an electronic document and unique to the person using it; capable of verification; under the sole control of the person using it; and linked to a document in such a manner that the digital signature is invalidated if any data in the document are changed.

(4) When the efforts of more than one licensed landscape architect combine to produce documents requiring a seal, only one licensed landscape architect is required to affix a seal to the document.