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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I can confirm this is a private locate. For all public locates please contact 811.

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Once you submit this form, a Penhall Company representative will contact you within 24 hours. Thank you for the opportunity to earn your business!


Maui Utility Locating Projects that Penhall Worked On

Ground Penetrating Radar used to detect voids due to erosion from tidal surf going under seawalls of a condominium property

GPR detects voids caused by erosion from tidal surf in hawaiiRecently, a contractor contacted Penhall Technologies with a unique request. This customer was working on a soil erosion issue along the coast on the island of Maui. He wanted to know if we could detect voids in the soil below the surface. These voids were due to erosion/washout from the tidal surf going under the seawalls. We informed the customer that our equipment is primarily used to locate underground utilities. However, our analyst suggested that the equipment could detect voids depending on soil conditions. This was an acceptable alternative to digging up 120’ of beachfront property to investigate. The analyst suggested to perform the locating during low tide which would allow the voids to be clear of seawater and present an open “pocket” of air.

Using the GSSI SIR 4000 and the 400MHz antenna mounted to a 3-wheel cart, the analyst made several passes over the known sinkholes to further identify what they may look like. Then, the analyst marked the scanned areas using pink flags. Within a couple days the customer proceeded to excavate the highlighted areas. He confirmed the analyst’s markings. At the end, the analyst delivered consistent results, as the areas showed to have voids or washout.

Penhall Technologies of Hawaii has the capability and the man power to meet your needs in a timely manner. We have the expertise to think outside the box, and to provide solutions to the most challenging situations. This ultimately ensures that your projects are safe and on time.

Radio Detection used to locate utility within restrooms of large hotel

locate utlities using radiodetectionA large contracting company requested a utility scan in six restrooms in a large hotel in Maui.  The company was performing a renovation. Because of this, they needed to reroute plumbing. Our analyst was able to locate and mark each restroom using RD technology. The analyst marked all of the utilities using spray paint. As a result, it was safe for the construction company to move forward with the project.