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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What services can we assist you with?

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

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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?

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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!


Richmond Utility Locating Projects that Penhall Worked On

gpr used to locate utilities before trenching for electrical installationAn electrical company asked Penhall Richmond Utility Locating branch to assist in their project by finding utilities in a 10′ W x 50′ L area in preparation for trenching for some electrical rerouting.  Our analyst used ground penetrating radar to locate and mark any utilities to avoid damaging or cutting any existing lines when digging.

GPR and Radio Detection used to locate several utilities before installing new water line

utility locating in richmond vaPenhall Technologies completed a project at the Strawberry Hill Pump Station in Richmond, Virginia. A customer needed to locate utilities around an existing vault prior to digging a trench to install a new water pipe. A 400MHz GPR antenna was used to locate utilities to a depth of 7’ around the vault location. There were known and unknown utilities in the area that the customer wanted to confirm and locate. Ground penetrating radar is the preferred method for slab on grade projects. GPR only requires access to one side of the concrete. GPR scanning is quick and reliable with results in real time with no processing time. To check for live conduits, a utility wand was used to sweep each area for power and communication lines.

Ground Penetrating Radar used to locate an underground duct bank around a building

gpr used to locate underground duct bank, Richmond VAPenhall Technologies was asked to locate a known duct bank around a building in Glen Allen, VA. A GSSI SIR 4000 with a 400 MHz antenna was use to scan the area, which was approximately 50ft X 50ft. Ground penetrating radar was able to show each edge of the duct bank to give an approximate width as well as the path it was going. Our GPR Analyst was able to provide quick and reliable results allow for the electrical project being pursued to move forward on time.