[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR630.401] [Page 143] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 630_PRECONSTRUCTION PROCEDURES--Table of Contents Subpart D_Geodetic Markers Sec. 630.401 Purpose. Source: 39 FR 26414, July 19, 1974, unless otherwise noted. The purpose of this subpart is to prescribe procedures for conducting geodetic control surveys when participation with Federal-aid highway funds in the cost thereof is proposed and to encourage inter- agency cooperation in setting station markers, surveying to measure their position, and preserving the control so established.