Tips of the Trade Brought to you by Duke Energy
Natural Gas Pipeline Markers

Duke Energy Emergencies

Carolinas: 800-769-3766
Florida: 800-228-8485
Indiana: 800-343-3525
Duke Energy Progress:

Know what's below. Call 811 before you dig.

Most state laws require at least two to three full working days' notice; some may be longer. Call 811 or go to for the best information for your state.

North Carolina:
South Carolina:

Pipeline Getting ready to dig? Contact 811 well in advance, and check for Duke Energy's transmission pipeline markers near your dig site. These markers are usually bright yellow and display our name and emergency phone number. If you see one, you’ll know a high-pressure natural gas pipeline is nearby.

Markers Do NOT Replace 811
Pipeline markers indicate the general location of high-pressure gas transmission lines. However, these markers are not present in all areas. For security reasons, these markers do not show the exact location, path, depth, or number of gas pipelines in the area. So, tracing a straight line between two markers near your proposed site and avoiding that line won’t do the trick—the pipeline may not follow a direct course between the markers.

Pipeline markers also do not show the location of distribution main lines or service lines that carry natural gas to homes and businesses. So never use pipeline markers as a substitute for notifying 811. Always dial 811 or place an online request before you dig to have all utility lines in your dig area located and marked.

Pipeline Markers Call for Extra Care
Damage to a high-pressure pipeline can cause a natural gas leak that can result in a catastrophic fire or explosion. If you plan to excavate within 25 feet of either side of the centerline of a high-pressure pipeline, a qualified Duke Energy representative must be onsite during your excavation to ensure pipeline integrity is maintained.

If you observe suspicious activities or any signs of a natural gas leak near a pipeline marker, call the phone number listed on the marker. Signs of a gas leak may include a smell of sulfur or rotten eggs, a hissing or roaring sound, dirt spraying or blowing into the air, continuous bubbling in water, or vegetation that is dead/dying for no apparent reason.

Where You’ll Find Them
Pipeline markers are usually found where a pipeline intersects a highway, street or railway, and at other readily visible points along a pipeline right-of-way (ROW). A ROW is a corridor of land clear of trees, buildings or other structures—for example, alongside a railroad track.

Would You Like to Know More?
Additional digging and overhead guidelines, case studies, instructional videos and training tools can all be found, at no charge to you, on Duke Energy’s e-SMARTworkers website.

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