Final answer:
If an excavation is within 3 feet of a regulator station, inform the relevant authorities as soon as possible.
Step-by-step explanation:
If an excavation is within 3 feet of a regulator station, inform the relevant authorities as soon as possible. The proximity to the regulator station is crucial because it can pose a risk to safety and the proper functioning of the station. By notifying the authorities promptly, they can assess the situation and take appropriate measures to ensure the safety and integrity of the regulator station.