Use of Missouri State Plane Coordinate System

PURPOSE: This rule sets forth the requirements for referencing land boundary corners to the Missouri State Plane Coordinate System. (1) When the professional land surveyor is specifically requested or required to reference land boundary corners to the Missouri State Plane Coordinate System, the professional land surveyor shall comply with the following requirements: (A) The position of the corner shall be based upon a geodetic control station having a horizontal accuracy of second order (as defined in 20 CSR 2030-18.020) or higher order; (B) The survey connecting the corner to the geodetic control station shall meet the accuracy standards for property boundary surveys set forth in this chapter; and (C) The plat or other publication of results shall identify the geodetic control station(s) that were used to determine the position of the corner(s), along with a list of the coordinates of those control station(s); the appropriate adjustment date or realization designation and Datum/Terrestrial Reference Frame, along with the epoch date when applicable. Epoch date refers to Reference Epoch Coordinates (RECs). Coordinates estimated by National Geodetic Survey (NGS) for one of the official reference epochs NGS will define (every five (5) or ten (10) years, as currently planned). As these coordinates are computed by NGS they are considered part of the National Spatial Reference System (NSRS); a brief statement of the method used to obtain those positions; and the grid factor used (if applicable). AUTHORITY: sections 60.550 and 448.2-109, RSMo 2016, and section 60.510(7), RSMo Supp. 2024.* Material in this rule was originally covered in 10 CSR 30-2.050. Original rule filed Dec. 1, 2016, effective June 30, 2017. Amended: Filed Jan. 8, 2025, effective Aug. 30, 2025. *Original authority: 60.510, RSMo 1969, amended 2012, 2013, 2023; 60.550, RSMo 1969, amended 2013; and 448.2-109, RSMo 1983, amended 1988.