Section 28-503.7. Costs

The costs and expenses for painting over, covering,
  rendering ineffective or for the removal and storage of  such  sign  and
  its  sign  structure may be recovered from the owner of the premises or,
  if the illegal sign is under  the  control  of  an  outdoor  advertising
  company  and  notice  was served on such company in accordance with this
  article, from such outdoor advertising  company.  Such  amounts  may  be
  recovered  by  the  city  in  an  action  or  proceeding in any court of
  appropriate jurisdiction and, with respect to amounts owed by an outdoor
  advertising company, by drawing upon any bond posted or  other  security
  provided  by  such company pursuant to section 28-502.2. Nothing in this
  article shall be construed to limit the ability  of  an  owner  to  seek
  recovery of such costs and expenses from any other party.