There is a wait time of 2 hours or the date and time requested on the notice, whichever is longer, after an emergency locate notification request is made through the State-Wide One-Call Notice System. If the conditions at the site dictate an earlier start than the required wait time, it is the responsibility of the excavator to demonstrate that site conditions warranted this earlier start time.
Upon notice by the person engaged in emergency excavation or demolition, the owner or operator of an underground utility facility in or near the excavation or demolition area shall communicate with the person engaged in emergency excavation or demolition within 2 hours or by the date and time requested on the notice, whichever is longer by (1) marking the approximate location of underground facilities; (2) advising the person excavating that their underground facilities are not in conflict with the emergency excavation; or (3) notifying the person excavating that the owner or operator shall be delayed in marking because of conditions as referenced in subsection (g) of Section 11 of this Act .
The notice by the owner or operator to the person engaged in emergency excavation or demolition may be provided by phone or phone message or by marking the excavation or demolition area. The owner or operator has discharged the owner's or operator's obligation to provide notice under this Section if the owner or operator attempts to provide notice by telephone but is unable to do so because the person engaged in the emergency excavation or demolition does not answer his or her telephone or does not have an answering machine or answering service to receive the telephone call. If the owner or operator attempts to provide notice by telephone or by facsimile but receives a busy signal, that attempt shall not discharge the owner or operator from the obligation to provide notice under this Section.
220 ILCS 50/6