While technology has evolved it is still the case that visual confirmation of buried utilities is the definitive method to verify exact horizontal and vertical data. Obtaining this data is critical for developing a vertical profile during design. It assists with confirming a horizontal alignment, particularly one with narrow parameters.

Non-destructive methods of excavating safely expose existing utilities.
Precise horizontal & vertical data is obtained on targeted conflicts.
Marking/staking of the location & site restoration is performed.
Surveying of the location for precise data & preparation of formal test hole reports including pictures.