The City Council may, by its own motion or on
petition or on recommendation of the City Planning Commission, and
after proper public notice and public hearing, amend, supplement or
repeal the regulations, provisions or boundaries of this chapter.
The disposition of a petition for amendment
by the Council shall be final, and disapproval or denial of the proposed
amendment shall void the petition. No new petition for an amendment
which has been previously denied by the Council shall be considered
by it except for a vote to table or to receive and file, and no public
hearing shall be held on such amendment within a period of one year
from the date of such previous denial, unless the Planning Commission
shall find that there have been substantial changes in the situation
which would merit a rehearing.