(1) For the purposes of describing the location of any survey station in Montana, it is considered a complete, legal, and satisfactory description of such location to give the position of the survey station on the system of plane coordinates designated in this part.
(2) When any tract of land to be defined by a single description extends from one into another of the NAD 27 coordinate zones, the positions of all points on its boundaries may be referred to either of such zones, the zone which is used being specifically named in the description.