Underground Service Locator

It’s essential to locate known subterranean services and assets before you dig. Underground service location increases site safety and mitigates risks on-site by locating underground hazards and assets. This is carried out using service plans as a guide, Electromagnetic Induction (EMI) tools, Ground Penetrating Radar (GPR), manhole lifters, and visual observation.

Woods' in-house standard operating procedure for underground service location is used for all subsurface service investigations. This encompasses best practice procedures for detecting underground assets using our location equipment. The equipment used includes dual frequency Ground Penetrating Radar (GPR).

All our mark-outs follow the standard guidelines presented in the Minimum Standard for Utility Identification and Protection on Road Projects published by Waka Kotahi NZ Transport Agency:

1. Cable locating and utility tracing
2. Passive and active tracing
3. Top of the line, modern equipment
4. Accurate location and tracing of telecommunication and electricity lines
5. Powerful, long lasting-current generator for tracing conductive services and tracers
6. Intuitive on-site mark-outs and reporting

Get in touch before you dig

We can help you manage underground service location, inspecting, and GIS / GPS mapping:

North Island
021 227 4482
usl@woods.co.nz

South Island
021 227 4482
usl_southisland@woods.co.nz

"Woods was great to deal with. Very quick to respond. Quick to come to site. I wanted the wastewater line marked. Other providers were not willing to do a camera inspection or any other kind of inspection due to a dip in the line. Woods had no problem using their sonar to locate the line. Highly recommend."

- Jayesh