Utility potholing, also called daylighting, can be an excavation method that will involve producing a number of small check holes so that you can accurately Identify underground lines. The technician will deliver down a tracer wire with a receiver all the way down to go through the frequency from above. https://images.google.com.co/url?q=https://www.bessutilitysolutions.com/services/vacuum-excavation-potholing/