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Subsurface Utility Services

What Are SUE Quality Levels?

The levels of SUE work required will vary from the state, city, or municipality, and/or the private client's request.

Quality Level A

Quality Level A provides the greatest level of accuracy in finding underground utilities. It involves non-destructive mapping, as well as data on the type, size, condition, and material of the utilities.

Quality Level B

Quality Level B uses surface geophysical methods to find utilities and designate their position. This critical step is also known as designating.

Quality Level C

Quality Level C involves surveying utilities that are already visible, such as manholes and valve boxes.

Quality Level D

The less accurate and more basic quality level is Quality Level D, which involves surveying existing utility records, whether written or verbal.