220 ILCS 50/5
When the Illinois Department of Transportation notifies an owner or operator of an underground utility facility or CATS facility that the Department will conduct a preconstruction conference concerning new construction, reconstruction, or maintenance of State highways in and near the area in which such owner or operator has placed underground utility facilities, such notification shall, except as otherwise provided in this Section constitute compliance by the Department or its contractors with paragraphs (a), (b), and (d) of Section 4 of this Act. In instances when notification of a preconstruction conference is provided to the owner or operator of an underground utility facility or CATS facility but no specific date is established at the preconstruction conference for the new construction, reconstruction or maintenance of State highways in and near the area in which the owner or operator has placed underground utility facilities or CATS facilities, then the Department or its contractors shall later comply with paragraph (d) of Section 4 of this Act.
220 ILCS 50/5