This is the National One Call communication system designed to mark the location of underground facilities prior to any excavation activities. State law requires you to call PA One Call at 1-800-242-1776 or 811 at least three days before you dig.
How to Dig Safely
It's a free call to 811 and it's the law! If you're a homeowner, be sure to call at least three days prior to the start of any digging.