Underground utility detection & GPR surveys

About this service

We run the MALÅ Ground Explorer GX HDR ground-penetrating radar with four shielded antennas — 80, 160, 450 and 750 MHz — so one system covers shallow high-resolution work such as reinforcement and utility mapping through to deeper geotechnical and archaeological targets. Profiles are positioned with RTK GNSS and processed in MALÅ Vision into 2D sections and 3D depth slices. For buried metal covers, iron pins and survey marks our crews carry a geo-FENNEL FMD 60 all-metal detector (to 60 cm) and a Radiodetection RD312 cover locator, so chambers and boundary marks are traced and surveyed in before stake-out or excavation. GPR results are interpreted conservatively: depths and target types are reported with their confidence, and trial holes are recommended where a design decision depends on them.

Where this work supports a project

• Utility and service mapping before excavation
• Reinforcement, slab and void scanning
• Buried covers, pins and survey-mark location
• Geotechnical and archaeological investigation

Typical deliverables

• Utility location plans and depth tables
• GPR radargrams and 3D depth slices
• Marked-up site drawings and target schedules
• Survey report with confidence notes

Planning your survey

Useful things to share with the team when you get in touch:

• The area to scan, surface type and access — paving, soil, slab or reinforced concrete each change the antenna choice.
• Any utility records, as-built drawings or previous investigations, so known services are confirmed rather than rediscovered.
• The purpose of the survey — excavation safety, design input or heritage work — and the depth range that matters.
• Whether results are to be tied to site control and delivered in the project coordinate system.

Coverage

GPR and utility detection surveys are available for projects in Lebanon and Syria, and by arrangement in Canada; scope is confirmed per project.