C.R.S. § 38-52-106

The use of the term “Colorado coordinate system of 1927 north zone, central zone, or south zone” or “Colorado coordinate system of 1983 north zone, central zone, or south zone” on any map, report of survey, or other document shall be limited to coordinates based on the Colorado coordinate systems as defined in this article. Such map, report, or document shall include a statement describing the standard of accuracy, as defined by the national ocean survey/national geodetic survey, maintained in developing the coordinates shown therein.