The following improvements shall be installed by the subdivider. Prior to the approval of the final plat, he shall post a performance bond as provided in §
151-7C(3) sufficient in amount to cover the estimated full costs of such construction as determined by the Planning Board.
Monuments shall be placed at all block corners,
angle points, points of curvature in streets and points of tangency
or horizontal curves and at such intermediate points as shall be required
by the Village Engineer. Monuments shall be of granite or concrete
with an iron pin in the center.