OMNI Communications provides Subsurface Utility Engineering (SUE) services for identifying, locating and mapping existing underground utilities. Using state-of-the-art geophysical sensing equipment and non-destructive excavation techniques, our experienced professional technicians perform all research, field surveys, testing, data management, quality control and final CAD Plans preparation for the most demanding underground utility projects.

SUE Quality Levels, as described by the American Society of Civil Engineers, classify the quality of subsurface utility information based on degree of risk and accuracy, from Level D (low quality) to Level A (highest accuracy).

Quality Level D: Record Research/Data Collection - Information derived from records research or oral history. This level can provide a "feel" for the overall congestion of utilities, but is often limited in terms of accuracy and comprehensiveness.
Quality Level C: Visible Surface Feature Utility Survey - Data obtained from surveying and plotting above ground utility features. Level C data supplements Level B, and finds omissions and errors in record information.
Quality Level B: Utility Designation - Data is collected by thorough applications of appropriate surface geophysical sensing technology. Located utilities are marked, field-tied to project monumentation and mapped.
Quality Level A: Underground Utility Locating (Test Hole) - Data has the highest confidence level. Precise vertical and horizontal location of utilities is obtained using non-destructive vacuum excavation equipment to safely expose, measure and map utilities. Includes all other Quality Level tasks and conflict resolution.


OMNI SUE Procedures:

  • Obtain utility records from owners and compile comprehensive list of all utility owners and contacts
  • Appropriate traffic control and warning signs are used during all phases of field investigation and survey
  • Designate utilities using electromagnetic and/or Ground Penetrating Radar
  • Marked utilities are collected using conventional survey or Global Positioning System/Real-Time Kinematic data collection and
  • Collected utilities are plotted and compared to field sketches and utility records

Involves managing certain risks associated with utility mapping at appropriate quality levels, utility coordination, utility condition assessment, utility relocation design and coordination, communication of utility data to concerned parties, utility relocation cost estimates, implementation of utility accommodation policies and utility design. -- As defined in Standard Guideline for the Collection and Depiction of Existing Subsurface Utility Data, CI/ASCE 38-02, American Society of Civil Engineers, 2002.