There are markings with different colors on my property or street, what do they mean? – PG&E Help Center
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How 811 Works
Always Call 811 Before Digging, Excavating or Trenching
American Electric Power - AEP - You never know what's underground. Before you dig, always call 8-1-1 and look for these colors to mark underground utility lines. #SafetySaturday | Facebook
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Universal Color Code for Underground Utility Lines
What We Do - 3D Line Locating
