Del. Code tit. 6 § 5505
No coordinates based on either Delaware Coordinate System, purporting to define the position of a point on a land boundary, shall be presented to be recorded in any public land records or deed records unless such point is established in conformity with the standards of accuracy and specifications for first- or second-order geodetic surveying as prepared and published by the Federal Geodetic Control Committee (FGCC) of the United States Department of Commerce. Standards and specifications of the FGCC or its successor in force on the date of said survey shall apply. Publishing existing control stations, or the acceptance with intent to publish the newly established stations, by the National Ocean Service/National Geodetic Survey, shall constitute evidence of adherence to FGCC specifications. To meet local conditions, these limitations may be modified by the Secretary of the Department of Transportation in compliance with Chapter 101 of Title 29 after consultation with the Office of State Planning Coordination, the Delaware Geographic Data committee and the State Mapping Advisory Committee.
6 Del. C. § 5505