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.

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?

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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!

Santa Clara Utility Locating Projects that Penhall Worked On

Identify private utility lines before undergoing a patio demolition

locate utilities before undergoing demolition of patioIn Cupertino, a private homeowner wanted to be sure no underground utilities were beneath the surface before chipping away an old patio slab. Penhall Technologies arrived at the home on a Saturday, marked all  utilities, and left the customer feeling confident and ready to dig!

GPR used to locate buried utilities prior to construction

GPR used to locate buried utilities prior to constructionA well-renowned country club in Monterey was undergoing major renovations. The customer wanted to keep the construction timeframe short to avoid disturbancec for both hotel guests and members. A large parking lot was to be repurposed for an additional outdoor dining space. Prior to the demolition of the parking lot, GPR was used to locate and identify underground utilities.

Mark underground cables, wires, and pipes before excavating and laying new sod

Mark underground cables, wires, and pipes before excavating and laying new sodA Hollister high school was planning to renovate their existing baseball fields. New grass and irrigation systems were to be installed. Penhall Technologies performed underground private utility locating with the use of GPR and RD technology to mark all existing water lines.

Utilities located at popular boardwalk parking lot to prepare for crowd improvements

Surveying for subsurface utilitiesAt a popular boardwalk parking lot, underground utilities needed to be located and marked in preparation for summertime crowd improvements. Gas and water lines were identified and marked. In addition, a written field report which was provided to the customer for their records.

Locate and determine the depth of the main water line for commercial property

Identify main water line under concrete slabA Cupertino commercial property was purchased to be converted into a fitness center. The large, bare interior concrete slab needed to be scanned to locate a main water pipe. Penhall Technologies arrived on-site, found the pipe, approximated the depth, and marked it for the customer. The property conversion was able to move forward safely and timely.

Avoid hitting vital utility lines before undergoing tree removal

locate utilities before undergoing tree removal In San Jose at a high-profile technology campus, 15,000 sq foot of underground utility locating was conducted before trees could be removed in a designated area. Penhall Technologies executed the utility locating with the use of the GSSI 400Mhz antenna and the RD7100.

GPR used to provide a full underground utilities image as well as scan concrete to prepare for concrete cutting

utility locate and concrete scanning in Monterey CAA large general contractor with extensive experience in commercial construction in both the private and public sectors needed trained, proven GPR analysts. Because they had high regard for Penhall, it was clear to them that we were the ones for the job.
The general contractor accepted the daunting task of creating a full underground utilities image after they had already built the building for a new dining facility at the Presidio of Monterey. The GPR analysts needed perform utility scanning and mapping as well as structure scan the slab where the contractors deemed it necessary to saw cut and make needed repairs. Penhall worked hand in hand with the mechanical subcontractor in creating a “red line” drawing of the facility. After using several types of equipment to scan the slab as well as perform a sweep for utilities, Penhall was able to exceed the expectations of the client by not only locating, but also marking the suspected utilities. The full scan was completed in a non-destructive manner, and the contractors were happy to move forward with the project safely.