A. For purposes of more precisely defining the Oklahoma Coordinate System of 1927, the following definition by the United States Coast and Geodetic Survey (now National Ocean Service/National Geodetic Survey) is adopted:

1. The "Oklahoma Coordinate System of 1927 North Zone", is a Lambert conformal conic projection of the Clarke spheroid of 1866, having parallels at north latitudes 35 degrees 34 minutes and 36 degrees 46 minutes along which parallels the scale shall be exact. The origin of coordinates is at the intersection of the meridian 98 degrees 00 minutes west of Greenwich and the parallel 35 degrees 00 minutes north latitude. This origin is given the coordinates: x = 2,000,000 feet and y = 0 feet.

2. The "Oklahoma Coordinate System of 1927 South Zone", is a Lambert conformal conic projection of the Clarke spheroid of 1866, having parallels at north latitudes 33 degrees 56 minutes and 35 degrees 14 minutes along which parallels the scale shall be exact. The origin of coordinates is at the intersection of the meridian 98 degrees 00 minutes west of Greenwich and the parallel 33 degrees 20 minutes north latitude. This origin is given the coordinates: x = 2,000,000 feet and y = 0 feet.

B. For purposes of more precisely defining the Oklahoma Coordinate System of 1983, the following definition by the National Ocean Service/National Geodetic Survey is adopted:

1. The "Oklahoma Coordinate System of 1983 North Zone" is a Lambert conformal conic projection of the North American Datum of 1983, having parallels at north latitudes 35 degrees 34 minutes and 36 degrees 46 minutes along which parallels the scale shall be exact. The origin of coordinates is at the intersection of the meridian 98 degrees 00 minutes west of Greenwich and the parallel 35 degrees 00 minutes north latitude. This origin is given the coordinates: x = 600,000 meters and y = 0 meters.

2. The "Oklahoma Coordinate System of 1983 South Zone" is a Lambert conformal conic projection of the North American Datum of 1983, having standard parallels at north latitudes 33 degrees 56 minutes and 35 degrees 14 minutes along which parallels the scale shall be exact. The origin of coordinates is at the intersection of the meridian 98 degrees 00 minutes west of Greenwich and the parallel 33 degrees 20 minutes north latitude. This origin is given the coordinates: x = 600,000 meters and y = 0 meters.

Added by Laws 1990, c. 138, § 5, eff. Nov. 1, 1990.