Final answer:
In Illinois, excavators must call Digger/JULIE at least 48 hours and not more than 14 days before beginning any excavation work to prevent damage to underground utilities.
Step-by-step explanation:
The question posed is related to the legal requirements set forth by the state of Illinois, specifically the City of Chicago, for excavators regarding the timeframe for contacting Digger/JULIE before beginning any excavation work. In Illinois, the law requires excavators to call Digger/JULIE at least 48 hours and not more than 14 days prior to the start of an excavation project to prevent damage to underground utilities. This is a critical safety measure and a legal prerequisite to ensure the protection of infrastructural utilities and to avoid potential hazards during the excavation process.