Use these clearance guidelines when working around buried facilities. Keep in mind: Existing grades can
change, and the current depth of an electric or natural gas line may be different than when originally installed.
Minnesota digging clearance requirements
Hand digging must be performed when working within 24 inches from each side of facility markings.
Trenchless technology (boring, directional drilling)
Always expose facilities to verify their depth and location when using trenchless technology.