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?

(*) City

(*) State

(*) Zip Code

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

(*) 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!

The difference between Public Utility Locator & Private Utility Locator

  • Public utility locator identifies utility lines on public property. Public utility lines are within a network of electricity, water, sewer, gas systems which are managed by providers. These lines often stop on the trail to your land at the meter. Public utility locating service is at no cost.
    To avoid failure in digging, you need to contact public utility locator first by dialing 811
  • Private utility locator identifies utility lines on private property. Private locator often comes in where public utility companies cannot perform the service. There is a fee to private utility locating service depending on the scope of the project, the objects to be identified.

    difference between private utility locating company and public utility company

    Credit to Irvine Ranch Water District

Ground penetrating radar used by private utility locator to determine multiple layers and thickness of each layer

utility locating to determine asphalt, concrete, and sand layersIn Pascagoula, MS, we performed GPR scanning for an engineering company using our utility cart. The company needed to understand what utilities were under asphalt, concrete and sand layers in a 100 x 10 foot area about 8 to 10 feet deep. We were able to approximate the thickness of each asphalt, concrete, and sand layer because the moisture levels were controlled and the spacing of the rebar allowed us to gather sufficient information.

Locate utilities using GPR scanning for military base

locate utilities at military base A general contracting company asked Penhall Technologies to perform GPR scanning at a military base.  We used a 400 MHz antenna and a utility scan cart to locate the utilities that were about 3 feet deep, in a 240 x 90 foot area.