23 CFR § 630.402 - Policy.
(a) Geodetic surveys along Federal-aid highway routes may be programmed as Federal-aid highway projects.
(b) All geodetic survey work performed as a Federal-aid highway project will conform to National Ocean Survey (NOS) specifications. NOS will, as the representative of FHWA, be responsible for the inspection and verification of the work to ascertain that the specifications for the work have been met. Final project acceptance by FHWA will be predicated on a finding of acceptability by NOS.