At such times as the improvement work has been satisfactorily completed and approved as set forth in this chapter, before filing the notice of completion, the subdivider shall submit a complete set of as-built improvement plans capable of being reproduced. Such plans shall clearly show any changes that were made during construction. As-built improvement plans shall include the stamp and signature of the subdivider’s engineer and permanent elevation bench mark based upon the city datum on each centerline of street monument and any other location as may be required by the city engineer or other designated city official. Bench mark elevations bench mark based upon the city datum (data) on each centerline of street monument and any other location as may be required by the city engineer or other designated city official. Bench mark elevations shall be set to the nearest one-hundredth of a foot. (Ord. 617 §2 (Exh. A), 2011; Ord. 612 §2 (Exh. A), 2010; Ord. 474, 2002).