Section 24-181. Written response

(a) A written response in a form prescribed
  by  the  board  shall  be  served upon the department and filed with the
  board within five days of receipt of the notice of violation.
    (b) If the allegation in the notice of violation is one  for  which  a
  hearing  is  not  required  by  section  24-178  of  this  code,  and is
  contested, then the respondent must either:
    (1) Include a copy of any permit or certificate  that  the  respondent
  asserts was issued by the department; or
    (2) Deny that such permit or certificate is required by law.
    (c) If any of the allegations in the notice of violation are those for
  which  a  hearing  is  required  by section 24-178 of this code, and are
  contested, the written response shall contain a concise statement of the
  facts constituting each ground of defense.
    (d) If allegations in  the  notice  of  violation  are  admitted,  the
  written response of the respondent shall consist of:
    (1)  A statement that he or she admits all of the material allegations
  to be true; and
    (2) A statement of any attempts subsequent to service of the notice of
  violation to comply with this code or with the order or regulation.
    (e) Failure of the respondent to serve a written response  within  the
  time provided shall be deemed to constitute a waiver of his or her right
  to appear and contest the allegations in the notice.