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.

Get a free quote today!

Where is the job located?

(*) Zip Code

(*)How did you hear about us?

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

What is the locating in preparation for?

Contact Information

(*) First Name

(*) LastName


(*) Email

(*) Phone


What is the best way to reach you?


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!

Columbia Utility Locating Projects that Penhall Worked On

Locate utilities for phone and data lines installation

underground utility locating in ColumbiaRecently, a private homeowner hired Penhall Technologies for underground utility locating. The customer wanted to locate all utilities prior to excavation of a trench to bury phone and data lines. Our analyst surveyed the side and back yard, which ultimately totaled to nearly an acre of land. He completed the survey using an electromagnetic device, and followed up by using Ground Penetrating Radar. By using both technologies, Penhall provides results that include utility type, location, and depth.

Penhall will locate utilities that 811 will not cover

locate private utilities 811 won't locateA general contracting company sought Penhall for some help in locating buried utilities in Columbia.  811 had previously marked utilities but stopped when the utilities reach private property.  Penhall Technologies came to the location to pick up where 811 left off to locate and mark all private utility lines.

Locate and mark utilities in storm drain before trenching

Locate and mark utilities in storm drain before trenchingA pipeline company in Columbia asked Penhall to perform scanning to locate any utilities that may be in a storm drain before trenching the area for piping.  Our analyst used GPR and RD to scan approximately 300 linear before trenching began.

Identify all existing utilities to ensure safety when digging

locate utilities on private parking lotAt another location in Columbia, Penhall Technologies identified subsurface lines and cables in an asphalt parking lot in preparation of digging. Our GPR analyst was able to locate and mark all utilities and determine the approximate depth of the lines.

Identify any existing utilities before boring holes to install a new structure

GPR scan to locate utilities undergroundRecently, a maintenance, engineering, and construction company hired us to scan the rail yard of a large industrial plant. They wanted to add a rail yard staging area to offload shipped commodities to the plant. The construction company needed to bore large holes into the ground to build the foundation of the new structure. Before doing so, they needed to know what utilities were in the ground. Our analyst used the Sir 4000 with a 400 MHz antenna to scan the area in an established grid pattern and followed up by performing sweeps with our radio detection device (RD 7100 DL), which will pick up any live power or communication lines. The analyst marked the utilities on the surface using spray paint. He then provided the customer with a report of our findings.