(a) Whenever the Community Development Director or his designee determines that there is a violation of any provision of this code, a warning shall be issued and shall serve as a notice of the violation. Such notice shall:
(1) Be in writing;
(2) Identify the violation;
(3) Include a statement of the reason or reasons why it is being issued and refer to the sections of this Springfield Zoning Code being violated; and
(4) State the time by which the violation shall be corrected.
(b) Service of notice of violation shall be as follows:
(1) By personal delivery to the person or persons responsible, or by leaving the notice at the usual place of residence of the owner with a person of suitable age and discretion;
(2) By certified mail deposited in the United State Post Office addressed to the person or persons responsible at a last known address;
(3) If a certified mail envelope is returned with endorsement showing that the envelope is unclaimed, then service shall be sent by ordinary mail, and the mailing shall be evidenced by a certificate of mailing. Service shall be deemed complete when the fact of mailing is entered of record, provided the ordinary mail envelope is not returned by the postal authorities with an endorsement showing failure of delivery; or
(4) By posting a copy of the notice form in a conspicuous place on the premises found in violation.