25 CFR 169.8 - Public survey.
(a) The terminal of the line of route shall be fixed by reference of course and distance to the nearest existing corner of the public survey. The maps, as well as the engineer's affidavit and the certificate, shall show these connections.
(b) When either terminal of the line of route is upon unsurveyed land, it must be connected by traverse with an established corner of the public survey if not more than 6 miles distant from it, and the single bearing and distance from the terminal point to the corner computed and noted on the maps, in the engineer's affidavit, and in the certificate. The notes and all data for the computation of the traverse must be given.