State law requires that you call at least two full business days (excluding Saturdays, Sundays and holidays) before you dig. In Michigan, Pennsylvania and Tennessee call ahead at least three full business days. This free call can help protect your family and neighbors from serious legal, financial and most importantly, physical harm resulting from damaging a buried pipeline or other utility.

1. Call 811 or your state’s One Call number at least two full business days before excavation is scheduled to begin. Provide the operator with the following information:
   • Your county, city or township
   • Digging location (street address and nearest cross street)
   • Type and extent of work (front/rear/side of property)
   • Digging start date and time
2. Outline the digging area with white paint or flags and wait the required number of days.
3. The One Call Center will notify the appropriate utility companies. Trained technicians will mark the location of underground facilities with colored flags, stakes or paint, at no cost to you.
4. Do not remove the flags, stakes or paint marks until you have finished digging.
5. Once your property is marked, dig with care. Regardless of depth, always hand dig within 18- 24 inches on either side of a marked utility line.