Blue Stakes recommends that excavators perform a thorough visual inspection of the entire dig site area to determine if all underground facilities have been located prior to beginning excavation. Excavators should ensure that each facility operator was notified and has responded. Facility operators may respond to the notification by marking the site, or by phone, email, or through Electronic Positive Response. If an Excavator is aware of or observes indications of a facility that was not marked in the work area covered by a current locate request, they are required to submit a NRSP notice before they can start digging and provide which facility operator(s) or facility type(s) have not responded or marked. This can be done anytime online at or by calling 811 during business hours. See FAQ #21 for more information regarding No Response Notices. 

To check for Electronic Positive Responses from participating member facility operators, go to Blue Stakes Positive Response page, click on the “Check your ticket’s responses” button and then enter the ticket number.  This will display a list of all participating member facility operators for that request, including if and how they each have responded to the locate request.