This is a mistake...again from the City Manager's 2/5 report:

HISTORIC PRESERVATION
At the January 26, 2010 Commission Workshop, the City Commission discussed the
division of the Historic Resources Preservation Board from the Planning and Zoning
Board and requested that Staff present the item at a March Commission meeting.
Staff has begun the work to re-write the Historic Preservation Ordinance to amend
the Zoning Code and create the new board. Further updates will be reported as
further progress is made.