5.6 Separate Locate Requests

One Call Center Excavator

Practice Statement:

Every excavator on the job has a separate one call reference number before excavating.

Practice Description:

There are often several excavators on a job site performing work. The construction schedule may dictate different types of work requiring excavation from different specialty contractors simultaneously. In these situations, it is imperative for each excavator to obtain a one call reference number before excavation to ensure that the specific areas have been appropriately marked by any affected underground facility owner/operator.


  • Existing state laws, including Ohio, Kansas, Michigan, Maryland, Illinois, and others


One Call Center One Call Center

Facility Owner Facility Owner

Excavator Excavator

Locator Locator

Project Owner Project Owner

Designer Designer