"Forty-eight hours" means 2 business days beginning at 8 am. and ending at 4 p.m. (exclusive of Saturdays, Sundays, and holidays recognized by the State-Wide One-Call Notice System or the municipal one-call notice system). All requests for locates received after 4 p.m. will be processed as if received at 8 a.m. the next business day.
220 ILCS 50/2.9