21-56.1607. GLOBAL POSITIONING SYSTEM SURVEYS

(a) General. Global Positioning System (GPS) surveys are defined as any survey performed by using the GPS 3-dimensional measurement system based on observations of the radio signals of the Department of Defense's NAVSTAR (Navigation Satellite Timing and Ranging) GPS System. All GPS boundary and geodetic control surveys performed in North Carolina shall be performed by a Professional Land Surveyor licensed in North Carolina in accordance with specifications established by the Federal Geodetic Control Committee. These specifications are incorporated by reference including subsequent amendments and editions. The material is available for inspection at the office of the North Carolina Geodetic Survey, 512 North Salisbury Street, Archdale Building, Raleigh, North Carolina 27611. Copies may be obtained at the office of the North Carolina Geodetic Survey at no costs.

(b) The Professional Land Surveyor in responsible charge of the GPS survey shall certify, sign and seal all prepared documents. When a map or document consists of more than one sheet, only one sheet must contain the certificate and all others must be signed and sealed. The certificate shall contain the following information:

(1) Class of GPS survey.

(2) Type of GPS field procedure (Static, Kinematic, Pseudo-Kinematic).

(3) Type of adjustment used.

(4) Dates of survey.

(5) Type and model of GPS receivers used.

(6) What datum coordinates or geographic positions are based on.

The certificate shall be substantially in the following form:

"I, ________, certify that this map was drawn under my supervision from an actual GPS survey made under my supervision; that this GPS survey was performed to ________ FGCC specifications and that I used ________ . GPS field procedures and coordinates were obtained by ________ adjustment. That this survey was performed on ________ using (type) (number) of receivers and all coordinates are based on ________ .

(c) Prepared documents shall include coordinates of all monuments and a map showing all non-trivial vectors measured. The map shall also contain the following information:

(1) Scale (bar or numerical).

(2) Legend.

(3) Loop closures before any adjustment.

(4) Certification.

(5) Company name, address and phone number.