Temporary markers should be located ________.

Temporary markers should be located directly over the pipeline to provide precise identification of its location. This ensures that anyone performing maintenance, construction, or excavation work can easily find the pipeline and take appropriate measures to avoid damage or interference. By placing markers directly above the pipeline, it enhances safety and minimizes the risk of accidents, as workers will have a clear visual reference of where the pipeline lies beneath the surface.

While other locations like the outer edge of the right of way or a certain distance from the center line might be used in some contexts, they do not offer the same level of accuracy and efficiency in identifying the pipeline's exact position. Markers placed on the outside diameter of the pipeline may cause confusion, as the outside diameter does not align with ground-level reference points.