210 ILCS 95/14
The Department shall in any proceeding to suspend, revoke or refuse to issue a permit or license, first serve or cause to be served upon the owner, applicant, permit holder or licensee a written notice specifying the way or ways in which such owner, applicant, licensee or permit holder has failed to comply with this Act, or any rules, regulations or standards promulgated by the Department pertaining thereto. In the case of a revocation or suspension, this notice shall require the owner, licensee or permit holder to remove or abate such violation, insanitary or objectionable condition, specified in such notice, within 5 days or within a longer period of time as may be allowed by the Department. If the owner, applicant, licensee or permit holder fails to comply with the terms and conditions of the notice, within the time specified or such extended period of time, the Department may revoke or suspend such permit or license.
210 ILCS 95/14