1. The developer of any subdivision shall install, within that subdivision, permanent reference monuments and markers, placed flush with the ground, in accordance with the provisions of this section.
2. All monuments and markers shall be properly set in the ground and approved by a registered land surveyor, prior to the time the Planning Commission recommends approval of the final plat.
3. Existing monuments or markers shall not be disturbed, unless absolutely necessary, in which case the monuments or markers shall be replaced at the exact spot from which they were removed.
4. The location of all monuments and markers shall be included on the final plat, including existing monuments and markers.
5. Three types of monuments and markers shall be used for different situations. The following specifications shall be applicable to each type of situation:
a. Type “A”: permanent reference monuments shall be placed at the intersection of the centerlines of rights-of-way, regardless of whether the paving of the street is centered in the right-of-way. There shall be a minimum of one such monument in each subdivision, with an additional such monument required for each 20 acres over the first 20 acres. If no two of the intersection monuments are within line-of-sight of each other, an additional marker shall be placed on the right-of-way centerline, so as to establish a straight line which can be seen (line-of-sight) from one end to the other. An additional such marker shall be placed at the center-point of the turnaround in each cul-de-sac.
b. These monuments shall be of non-corrosive metal plate, set in accordance with the accompanying diagram, and each shall be stamped with a cross at the point of the intersection and the elevation, to the nearest tenth of a foot.