34-25-104. Definition of zones; horizontal control stations.

(a) For purposes of more precisely defining the Wyoming Coordinate System NAD 1983 the following definition of the zones is adopted:

(i) The Wyoming Coordinate System NAD 1983, East Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 105T10' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40r30' North Latitude and the meridian at 105310' West of Greenwich. This origin is given the coordinates: x=200,000 meters and y=0 meters;

(ii) The Wyoming Coordinate System NAD 1983, East Central Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 107T20' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40y30' North Latitude and the meridian at 107320' West of Greenwich. This origin is given the coordinates: x=400,000 meters and y=100,000 meters;

(iii) The Wyoming Coordinate System NAD 1983, West Central Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 108T45' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40l30' North Latitude and the meridian at 108345' West of Greenwich. This origin is given the coordinates: x=600,000 meters and y=0 meters;

(iv) The Wyoming Coordinate System NAD 1983, West Zone, is a transverse Mercator projection of the North American Datum of 1983, having a central meridian at 110T05' West of Greenwich on which meridian the scale is set at one part in 16,000 exactly. The origin of coordinates is at the intersection of the parallel at 40o30' North Latitude and the meridian at 110305' West of Greenwich. This origin is given the coordinates: x=800,000 meters and y=100,000 meters.

(b) The position of any survey control point in the Wyoming Coordinate System NAD 1983 shall be as marked on the ground by horizontal control stations established in conformity with standards adopted by the Federal Geodetic Control Committee, or its successors, using first-order, second-order or higher-order accuracy survey work, whose geodetic positions have been rigorously adjusted on the North American Datum of 1983 and whose coordinates have been computed on the system herein defined. Any such station may be used for establishing a connection with the Wyoming Coordinate System NAD 1983.