If you are interested in receiving specific information regarding aircraft noise levels at your home, the Chicago Department of Aviation currently has portable noise monitors available for deployment, free of charge. Portable noise monitors allow residents to receive specific information about aircraft noise levels at a specific home during a two week monitoring period. To request a portable noise monitor from the Chicago Department of Aviation, an application can be found at the following link. https://www.flychicago.com/community/ORDnoise/ANMS/Pages/portable.aspx