Supplemental Information on Surveying, when to record a survey

1) 54−1202 DEFINITIONS

(7) "Land survey" means measuring the field location of corners that: (a) Determine the boundary or boundaries common to two (2) or more ownerships; (b) Retrace or establish land boundaries; (c) Retrace or establish boundary lines of public roads, streets, alleys or trails; or (d) Plat lands and subdivisions thereof. (emphasis added)

2) 54−1227. SURVEYS -- AUTHORITY AND DUTIES OF PROFESSIONAL LAND SURVEYORS AND PROFESSIONAL ENGINEERS.

Every licensed professional land surveyor is hereby authorized to make land surveys and it shall be the duty of each licensed professional land surveyor, whenever making any such land survey that is not preliminary in nature, to set permanent and reliable magnetically detectable monuments at all unmonumented corners field located, the minimum size of which shall be one-half (1/2) inch in least dimension and two (2) feet long iron or steel rod . . .
(emphasis added)

3) 55−1603 Definitions.

(9) "Public land survey corner" means any point actually established and monumented in an original survey or resurvey that determines the boundaries of remaining public lands, or public lands patented, represented on an official plat . . .
(emphasis added)

4) 55−1604 Filing requirements.

A professional land surveyor shall complete, sign and file with the county clerk and recorder of the county where the corner is situated, a written record of the establishment . . . such a filing shall be made for every public land survey corner and accessory to such corner which is established, reestablished, monumented, remonumented, restored, rehabilitated, perpetuated or used as control in any survey. The survey information shall be filed . . .
(emphasis added)

5) 55−1608. PROFESSIONAL LAND SURVEYOR TO RECONSTRUCT MONUMENTS.

(1) In every case where a corner record of a survey corner is required to be filed or recorded under the provisions of this chapter, the professional land surveyor must reconstruct or rehabilitate the monument of such corner, and accessories to such corner.
(2) Any monument set shall conform to the provisions of section 54-1227, Idaho Code, and shall be surmounted with a cap of such material and size that can be permanently and legibly marked as prescribed by the manual of surveying instructions issued by the United States department of the interior, bureau of land management, including the license number of the professional land surveyor
responsible for placing the monument. Monuments shall be marked such that measurements between them may be made to the nearest one-tenth (0.1) foot. If the monument is set by a public officer, it shall be marked by an appropriate official designation.
(3) When nonmetallic corner monuments were set in a survey conducted by an agency of the United States government, the corner location shall be remonumented with a monument conforming to the provisions of section 54-1227, Idaho Code, and shall be surmounted with a cap of such material and size that can be permanently and legibly marked as prescribed by the manual of surveying instructions issued by the United States department of the interior, bureau of land management, including the license number of the professional land surveyor responsible for placing the monument.
(emphasis added)

6) Definitions of "located"

Define.com definition:
To place; to set in a particular spot or position

Your Dictionary. com definition of "locate"

to mark off or designate the site of (a mining claim, etc.)
to establish in a certain place
to discover the position of after a search

Black's Law Dictionary definition of "located"

Discovery by survey

Also means to ascertain place in which something belongs.....

To ascertain and fix the position of something

SUB-SECTION EXAMPLE

If the West 1/4 section corner was used as control then it is a public land survey corner as defined by IC 55-1603. It is being used as control as defined by IC 55−1604 in this land survey example, it would thus require a Corner Perpetuation and Filing form to be recorded according to IC 55−1604.
The requirement to monument the corner is contained in IC 54−1227 and IC 55−1608(2). Additional requirements for marking the cap on the monument are also contained in IC 55−1608(2).
The center 1/4 corner does not have to be monumented according to IC 54−1227, unless that position is field located (it's position is physically located on the ground).
The 1/16th corners, 1/64th corners would not have to be monumented according to IC 54−1227, unless those positions are field located (their position is physically located on the ground).

(emphasis added)

CONCLUSION

The Board's interpretation of "field located" means that if you set anything (stake, lath, nail, RR spike, "whisker", pipe, rebar) or if you "show" the location to the client, you have "field located" the corner and you are required by IC 54−1227 to set the appropriate monument.