Subsurface Utility Engineering (SUE)

Accurate utility data is essential for reducing risk and avoiding costly delays during design and construction. H&M Surveying provides Subsurface Utility Engineering (SUE) services focused on utility location and mapping to support engineers, contractors, and municipalities. Our team specializes in SUE Levels B, C, and D, using proven non-intrusive methods (excluding Ground Penetrating Radar) to identify and document subsurface utilities.

At Level B, we use electronic utility locators to designate and mark the horizontal position of underground utilities based on surface geophysical methods and visible features. Level C incorporates data from existing utility records and visible surface features, while Level D relies on utility owner records, as-built drawings, and client-provided information to develop a preliminary utility map. Together, these levels provide a graduated approach to utility mapping, helping clients balance schedule, budget, and project needs.

With H&M Surveying’s expertise, you can trust that utility conflicts are identified early, enabling smarter design decisions and safer construction practices.