A monument shall be accurately placed at each corner and at changes in direction of the boundary, at each street intersection, at points of curves of streets and at intermediate points as may be required by the Village Engineer. The monuments shall be concrete six by six by thirty inches long, with an iron pin in the center, or metal monuments as approved by the Engineer. The top of the monument or monument box shall be set at the finished grade upon the completion of the grading or paving of the streets and the lots. (Ord. 2362. Passed 10-9-89.)