Section 15-21-306 - Technical definition of system - Marking of coordinates on ground(a) For purposes of more precisely defining the Arkansas Coordinate System 1983, the following definition by the National Geodetic Survey is adopted:(1)(A) The Arkansas Coordinate System 1983, North Zone, is a Lambert conformal projection of the North American Datum of 1983 (NAD83), having standard parallels at north latitudes of thirty-four degrees fifty-six minutes (34° 56' north) and thirty-six degrees fourteen minutes (36° 14' north), along which parallels the scale shall be exact.(B) The origin of coordinates is at the intersection of the meridian ninety-two degrees zero minutes west of Greenwich (92° 00' west) and the parallel thirty-four degrees twenty minutes north latitude (34° 20' north). This origin is given the coordinates: East equals four hundred thousand meters (400,000 m.) and north equals zero meters (0.0 m.); and(2)(A) The Arkansas Coordinate System 1983, South Zone, is a Lambert conformal projection of the North American Datum of 1983 (NAD83), having standard parallels at north latitudes of thirty-three degrees eighteen minutes (33° 18' north) and thirty-four degrees forty minutes (34° 40' north), along which parallels the scale shall be exact.(B) The origin of coordinates is at the intersection of the meridian ninety-two degrees zero minutes west of Greenwich (92° 0' west) and the parallel thirty-two degrees forty minutes north latitude (32° 40' north). This origin is given the coordinates: East equals four hundred thousand meters (400,000 m.) and north equals four hundred thousand meters (400,000 m.).(b) The position of Arkansas Coordinate System 1983 shall be marked on the ground by triangulation or traverse stations established in conformity with standards adopted by the National Geodetic Survey for first-order and second-order work, whose geodetic positions have been rigidly 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 survey connection with the Arkansas Coordinate System 1983.