How far in advance must Texas One Call be notified before digging with mechanical equipment?

The correct timeframe for notifying Texas One Call before using mechanical equipment for digging is two working days, excluding weekends and holidays. This requirement ensures that the underground utility lines can be adequately marked to prevent potential damage or accidents during excavation. The two-day notice allows sufficient time for utility companies to assess the area and respond appropriately. Adhering to this guideline is crucial for safety, regulatory compliance, and the protection of public utilities.