Welcome to Chicago Police Department's Online Services Portal. File a written request with the Police Board.Figure out if you qualify for a Certificate of Good Conduct and collect all your case information to help fill out the forms. 7. A letter to the Chicago Police Department asking for a copy of your Chicago RAP sheet along with your phone number in case they have questions. Happy Kwanzaa from the Chicago Police Department. We extend our heartfelt wishes to all those in our community who are observing this meaningful holiday.