Commitment to Safety • Reliable Results
Responsive Resources • Established Expertise

Penhall Technologies provides utility locating, employing both electromagnetic induction (EMI) and ground penetrating radar (GPR) for privately owned property. We can identify and locate subsurface hazards and obstructions existing in the ground. Reduce the risk and help ensure the safety of your next project by contacting Penhall Technologies for your private utility locating needs.

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Electromagnetic detection and GPR used to locate live conduits and other anomolies within a concrete slab

concrete scan and utility locate in Honolulu, HI Penhall Technologies was called upon to scan and utility locate a slab on grade for new trenches inside a professional center in Kaneohe, HI during the renovation/demo phase. During this time the building offices on the above floors were still open and helping various customers. The scan analyst was able to clamp onto various existing conduits and drain pipes coming out to the slab, which allowed him to trace them throughout the new trench zones by using individual signals on each object. The HR mini was used to locate any unusual events within the concrete itself; and then the EM Utility Locator (RD700) was used to help identify any EM fields (electromagnetic fields) within and under the concrete slab. The size of the two areas that need to be cleared were (1) 46 ½ ‘X 145 ½’ & (1) 20 ½’X 70 ½’. The areas in which EM Fields were noticed were marked on-site with red paint and drain/plumbing lines were marked with green paint. By doing this it allowed the saw cutter to safely cut and avoid damaging anything. The saw cutter was able to successfully cut the all the new trenches without any damage and causing no disruption to services to the active facility and offices on the floors above.

Ground penetrating radar used to locate underground utilities and other hidden obstruction

Locate underground utilities and hidden obstructionsAt a location in Makakilo, HI, a customer needed to locate underground utilities along with any hidden obstructions.  The area to scan was approximately 300 x 100 yards. Our analyst used ground penetrating radar to locate electrical lines, fiber optic lines, and other utilities successfully.

Ensure construction safety by locating utilities first

Locate buried sewer pipesFor a commercial property in Kailua, a general contracting company hired Penhall Technologies to scan for underground utilities.  Our analyst scanned a small area of 14′ x 10′ to locate and mark all utilities so that it was safe for the general contractor to move forward with their project.