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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Where is the job located?

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What services can we assist you with?

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

Other Service

To better help you with your request, could you kindly provide the following information:

What are we scanning? Slab on grade, suspended slab, etc.

What are we scanning for? Ex. rebar, tension cables, conduits, etc.

What is the size of the area(s) that need to be scanned? How many areas?

What is the thickness of the slab?

What is the scanning in preparation for?

To better help you with your request, could you kindly provide the following information:

What is the surface that we are performing the locate on? Ex. Ground/Dirt, asphalt, concrete, indoor/outdoor, etc.

What is the size of the area that needs to be scanned in square feet or linear feet?

How many scan locations?

What are we locating? Water, gas, electrical, sewer, etc.

How many utilities are running through the proposed scan area?

Do we have access to meters or utility boxes?

What is the locating in preparation for?

Contact Information

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Other comments or project details?

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

Honolulu Utility Locating Projects that Penhall Worked On

Penhall helps to locate any hazards, mainly a 480 power line, before demolition of an old conveyor belt for H-Power

utility locating hawaiiPenhall Technologies received a request for GPR scanning and utility locating a concrete slab on grade at Covanta, locally known here in Hawaii as H-Power (Honolulu Program of Waste Energy Recovery). The contractor’s purpose in having us scan and perform the utility locate of the 54’x51’ area was to enable him to proceed with a demolition of an old conveyor belt system to make way for a brand new one. The job required two GPR Analysts, two RD7000’s and one three wheel cart. There were numerous conduits and pipes throughout the requested scan area. The contractor’s main concern was to identify the main 480 power in which he requested green paint to be sprayed. We carefully examined the data and informed the contractor of our results and he became a happy Customer from beginning to end. Our Hawaii field office will ensure that you have the right data and tools for any task presented to our Team.

Electromagnetic detection and GPR used to locate utilites 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.