Subsurface Utility Engineering

Kiwa, through T2 Utility Engineers, delivers professional Subsurface Utility Engineering (SUE) services using industry standards and advanced technologies to improve utility data quality and reduce project risk.

We support engineering teams, designers, and project owners with:

• Utility investigation and data collection – Records research, field reconnaissance, geophysical designation (GPR, EM), and vacuum excavation to locate and verify utilities
• Utility mapping and documentation – Accurate depiction of underground infrastructure with CAD, GIS, and BIM-ready deliverables
• Engineering analysis and risk assessment – Professional interpretation of utility data to support design and decision-making
• Utility conflict identification and mitigation – Early identification of potential conflicts to improve constructability and avoid redesign
• Standards-based delivery (ASCE 38) – Application of defined quality levels to ensure consistent, reliable, and defensible utility information
• Integrated project support – Coordination with design teams, contractors, and stakeholders to manage utility impacts throughout project development

Incomplete or inaccurate utility information is a leading cause of design conflicts, construction delays, safety incidents, and costly change orders.

Subsurface Utility Engineering helps address these risks by providing reliable utility data early in the project lifecycle.  Our expertise helps:

• Reduce utility-related risk and uncertainty by replacing unreliable records with verified data
• Improve project design and constructability through accurate understanding of subsurface conditions
• Prevent costly redesigns and delays caused by unexpected utility conflicts
• Enhance safety by reducing the risk of utility strikes during excavation
• Support defensible engineering decisions using standardized, quality-level data

Kiwa combines professional engineering judgment, advanced technologies, and established standards to deliver high-quality utility data and insight.

Our services help clients:

• Mitigate utility risk, improve safety
• Improve early-stage decision-making with reliable, field-verified utility data
• Reduce construction impacts by identifying and resolving conflicts before work begins
• Increase cost and schedule certainty by minimizing change orders and delays
• Strengthen coordination between project teams, utility owners, and stakeholders
• Deliver accurate, project-ready information to support design, construction, and long-term asset management

Our Services

• Subsurface Utility Engineering (SUE) ASCE 38 investigations
• Utility investigations
• Utility mapping, designation, and locating
• Vacuum excavation and Quality Level A verification
• Surveying and mapping / ASCE 75 geospatial services
• Utility coordination and conflict mitigation
• Advanced geophysics
• Utility risk management for damage prevention