Monuments may be set after approval of the final map, but not later than the time of completion of subdivision improvements, provided a cash deposit or approved bond in an amount set by the City is filed with the City, guaranteeing such work. At least one exterior boundary line of the land being subdivided must be adequately monumented or referenced before the map is recorded. Interior monuments need not be set at the time the map is recorded, provided that the engineer or surveyor certifies on the map that the monuments will be set on or before a specified later date (but not later than the date of completion of the subdivision improvements), and provided that the subdivider furnishes to the City an adequate security guaranteeing the payment of the cost of setting such monuments. (Ord. 89-2 § 2, 1989; Ord. 66 NS § 62(b), 1950; prior code § 20-27(e) and (f).)