Section 5-358. Hearing by the mayor

The mayor, prior to the final adoption
  of such map or maps, shall afford  to  all  persons  interested  a  full
  opportunity  to be heard respecting such map or maps and the acquisition
  of the real estate shown thereon, and shall give public notice  of  such
  hearing, by publishing a notice, once in each week, for three successive
  weeks  in  the City Record, and in two papers published in the county or
  counties in which  the  real  estate  to  be  acquired  or  affected  is
  situated,  and  in  two  daily  papers  in  the city. At such hearing or
  hearings, testimony may be produced by the parties appearing  before  it
  in  such  manner  as  the  mayor  may determine, and he or she is hereby
  authorized  to  administer  oaths  and  issue  subpoenas  in  any   such
  proceeding pending before him or her.