Whether you are at home, at work, or in a public place, it’s likely you are in an area served by natural gas pipelines. Since pipelines are underground, line markers are sometimes used to indicate their approximate location along the route.
The markers display the material transported in the line, the name of the pipeline operator, and the telephone number where the operator can be reached in the event of an emergency.
Markers only indicate the general location of a pipeline and cannot be relied upon to indicate the exact position.
Because many lines are not marked, it is critical that you call 811 prior to any excavation.