How To Identify Natural Gas Pipelines
Our natural gas pipelines are marked in a variety of ways to make it easy for you to identify them both above and below ground.
Natural gas pipelines are marked above ground with yellow markers and/or flags at regular intervals along the pipeline right-of-way. The markers display our 24-hour emergency telephone number and other identifying information.
Above-ground markers help identify the presence of underground natural gas pipelines but they do not represent the exact location, depth or the number of pipelines in the right-of-way. Do not rely solely on the presence or absence of pipelines markers. Always call 811 before you dig.
The technology for marking natural gas pipelines below ground is constantly improving. We use a combination of methods depending on the application and construction project.
Tracer wire is a thin conductive wire that is typically buried with underground utilities including natural gas, water and sewer. Tracer wire enables us to locate the gas line underground using a handheld location device.
Marker spheres are a new technology we use in most construction projects. The yellow sphere contains a passive antenna encased in a waterproof shell. Marker spheres are placed in the ground at regular intervals near the gas pipeline during a construction or maintenance project. Marker sphere technology makes it easier for us to accurately locate our pipelines and cross check data with our GIS system.
Report Suspicious Activity
It is a Federal offense to willfully deface, damage, remove or destroy any natural gas pipeline markers or signs indicating a right-of-way. If you see suspicious activity near a pipeline right of way or mistakenly unearth an underground pipeline marker, please call our 24-hour emergency number at 1-800-544-5606.