Prior to expiration of a tentative map or vesting tentative map for a major subdivision, as provided in Section 18.20.120, unless said map shall have been abandoned or the time for action on the same shall have been extended, the subdivider shall cause said subdivision to be surveyed and shall prepare and file with the City Council a final map of said subdivision. (Ord. 89-2 § 2, 1989; Ord. 66 NS § 12.1, 1950; prior code § 20-34.)