u/New_Funny_3710

I work as a private locator in Ontario Canada, I showed up to a job the other day for some bridge repairs. I did all the private utilities and marked a couple fiber optic lines. I saw this placard and I was always taught to advise the customer to call the 1-800 and not try to find it because it's Endbridge's job and they don't love guys marking their utilities and contractors not involving them. The customer seemed pretty pissed off and so I dug and tried to find a tracer and couldn't, I tried clipping on the placard and that didn't work either. Does anyone know how these are located or is it a case of just GIS and drawings and endbridge has to do it?