35 ILCS 200/11-55
Application for approval of a low sulfur dioxide emission coal fueled device shall be filed with the Pollution Control Board in the manner and form prescribed by that board. The application shall contain appropriate and available descriptive information concerning anything claimed to be entitled to tax treatment as a low sulfur dioxide emission coal fueled device as defined in this Code. If it is found that the claimed device meets that definition, the Pollution Control Board, acting through its Chairman or its specifically authorized delegate, shall enter a finding and issue a certificate that requires tax treatment as a low sulfur dioxide emission coal fueled device. The effective date of a certificate shall be on January 1 preceding the date of certification or preceding the date construction or installation of the device commences, whichever is later.
35 ILCS 200/11-55