What is the primary objective of the trace method?

• A. To measure the depth of the line
• B. To locate the surface position of the line
• C. To trace, identify, and pinpoint a buried line
• D. To determine the pipe diameter

Answer: (C)

The trace method is focused on following a signal along a buried line to reveal its exact path and location. By introducing or detecting a tracer in the line and using a receiver at the surface, you can trace the line’s route, confirm that it exists, and pinpoint its precise underground position for marking. This helps crews know where to dig and how to avoid damaging the line. It isn’t about measuring how deep the line is or determining the pipe’s diameter; those tasks are handled by other techniques. The key outcome is a clear map of where the buried line runs so safe excavation can proceed.