Natural gas lines are underground...but where?

Natural gas companies, including Nicor Gas, install aboveground pipeline markers to indicate the approximate location of buried large diameter, high pressure gas transmission lines. These line markers display the name of the pipeline operator and the telephone number where the operator can be reached in case of an emergency. Line markers are placed at public road crossings except in urban areas. Pipeline markers and warning signs indicate only the presence of a pipeline. They should not be used or relied upon to determine the exact location of the pipeline.

Learn more about pipeline safety by clicking on the links below: