THe trinity subsurface blog

Lead service lines are still in the ground across the country. The health risk, how to identify a lead line, and what locating contributes to replacement.

Sewer laterals are usually privately owned, four to six inches, and easy to miss. How they are inspected, lined and reinstated after a main is relined.

A strike costs far more than a locate. What utility damage actually runs, and how designating existing lines protects both schedule and budget.

Renovations mean capping, relocating and abandoning utilities inside and outside a building. How conflicts surface, and how they get resolved.

Typical utility burial depths vary by utility type, region and era, and records are often wrong. Why depth matters, the expectations of how deep utilities are buried, and how a test hole confirms it.

The PPE, training and stop-work authority behind a Trinity crew. What field technicians carry, and how safety checks happen before work begins.

GPR returns look like static until you know what to read. How ground penetrating radar works, and how a technician reads a hyperbola as a utility.

Finding a buried water leak takes utility locating plus acoustic equipment. How the methods work together, and what conditions limit what they can hear.

Most sewer manholes sit in the roadway. What that means for CCTV inspection access, traffic control, and how road work is planned around it.