Section 17-146. Stay of execution; modification

If any party, within three
  days after service or attempted service of such order upon  him  or  her
  and  before its execution is commenced, shall apply to the board, or the
  chairperson thereof, to have such  order  or  its  execution  stayed  or
  modified,  it shall then be the duty of the board to temporarily suspend
  or modify it at the execution thereof, save in cases of  imminent  peril
  to  the public health, when the board may exercise extraordinary powers,
  as specified in section five hundred sixty-three of the charter  and  to
  give  such party or parties together, as the case in the opinion of such
  board may require, a reasonable and fair opportunity to be heard  before
  it  and  to  present  facts  and  proofs,  according  to  its  rules and
  directions, against such declaration and the execution of such order, or
  in favor of its modification, according to the regulation of the  board.
  Such  board  shall  enter in its minutes such facts and proofs as it may
  receive and its proceedings on such hearing, and any other proof it  may
  take; and thereafter may rescind, modify or reaffirm its declaration and
  order,  and  require  execution of the original, or of a new or modified
  order to be made in such form and effect as it may finally determine.