b'Pipeline BasicsPipeline Right-of-WayAlthough typically buried underground, pipelines may also be found above-ground in extremely cold and harsh environments, and at pump and com-pressor stations, some valve stations and terminals. Whether aboveground or belowground, pipelines are constructed along a clear corridor of land called the right-of-way (ROW). The ROW may contain one or more pipelines, may vary in width, and will cross through public and private property. The ROW should be free of permanent structures and trees and be identified with a marker sign.Pipeline Marker SignsAboveground signs and markers identify the approximate location of under-ground pipelines. Markers are required to be present wherever a pipeline crosses under roads, railroads or waterways. They may also be found at other intervals and locations along the pipeline right-of-way, such as near buildings and pipeline facilities. Markers do NOT tell you the exact location, depth or direction of the pipeline; the pipeline may curve or angle around natural and manmade features. If there are multiple pipelines in the ROW, a marker sign should be posted for each pipeline. Pipeline markers may look different, but every sign tells you the same infor-mation: Pipeline product Pipeline operator24-hour emergency phone number 5 2022 by Pipeline Association for Public Awareness'