Contacting GPRS has never been easier due to the launch of our new mobile app. With the introduction of the GPRS App, you no longer have to search through your contact files or do an internet search to schedule our services.


Utility Locating at Angels’ Spring Training Facility

GPRS’s office in Phoenix, AZ. was hired by a local firm to locate utilities throughout the Angels spring training facility, which is located in Tempe.  This facility is looking to install signs throughout the main parking lot of the facility.  GPRS was able to utilize a couple methods to locate all of these utilities.  We first use your traditional locating wand with a transmitter to direct connect to utilities emerging from the ground to transmit a signal along the pipe and trace it out to its entirety.  This method allows us to locate any utility that that we can physically see emerging from the ground.  Once that is completed, we then use a 400 MHz GSSI antenna to locate any unknown piping that is underground that we can’t physically see emerging from the ground (this RD utility locator in the picture above).  This equipment is very helpful to double check the area to make sure you are locating everything on your site. It was important in finding the lighting conduits, to avoid any potential hazard to personnel.

Along with marking all findings on the ground with either pin flags or paint, GPRS also offers a service of collecting all the findings with a GPS and putting it into a google earth overlay or CAD for future reference. We can typically have the google earth overlay to the customer in 3 to 4 business days.

If you are interested in learning more about our concrete imaging capabilities or other Ground Penetrating Radar applications such as locating Utilities and sub-surface anomalies along a proposed pipeline trench, locating Underground Storage Tanks (USTs), clearing boring locations of possible Utilities for soil samples, Void Detection or even structural investigations. Don’t hesitate to contact us for more information or to hire us for your next project no matter how big or small the project may be. Ground Penetrating Radar Systems has a local office in Phoenix serving all of Arizona and as well as having offices all across the U.S in all major cities and states.  Please feel free to contact Tyler Pershall at 480-261-8202 or email me at

Using GPR at the Fort Lauderdale Airport

The Fort Lauderdale Airport has been making countless changes in recent years. As a result, they’ve had Ground Penetrating Radar out there sporadically working alongside them in different projects. Recently, they were tasked with adding multiple steel plates to several beams. Normally, this would not be such a complicated job because the beams would not be filled with too many reinforcing bars that could hinder them from finding their coring locations. However, things were very different this time around and a bit problematic because, each time they drilled, they would hit multiple rebar.

In light of that, in an effort to avoid wasting their time guessing where to drill and to avoid damaging the beams, the crew at Fort Lauderdale Airport decided to call out Ground Penetrating Radar to help them locate all of the rebars. We were happy to lend our services and demonstrate our expertise in concrete scanning. They knew that with our technology we could successfully identify and mark all of the rebars for them, thus providing them with an efficient way to complete their work and ensure success.

Once on site, the GPRS professional was escorted from the gate to the area where he would be working. Immediately the GPRS professional noticed that many holes were drilled on the beams, each highlighted with yellow to signify where they’d hit a rebar (see picture below). After going over all safety measures and communicating with the foreman about the scope of work, the GPRS professional put on his harness, got on the scissor lift and began scanning the beams. The biggest challenge for this job was maneuvering around a couple ceiling pipes that prevented the GPRS expert from reaching the areas he needed to scan. Eventually, the GPRS professional had to get off the scissor lift and get on a ladder behind the pipes to complete the work. Everything else was easy due to how efficient the ground penetrating radar was in picking up a signal for the rebars.

After locating all of the rebars within their scope of work, the GPRS professional explained all of the findings with the site contact before demobilization.

Below, you will see a picture depicting Peterson Jean-Baptiste, of GPRS, Inc. scanning on the Beam with the GPR device. If you would like to receive a proposal for similar work please visit the “Contact-Us” page at

GPRS Locates Sewer Lines

GPRS was contacted by an environmental firm to clear several areas prior to drilling for soil sampling. GPRS was able to locate crucial lines including an unmapped sewer line heading directly toward one of the areas they were going to be drilling.

“Time is a primary currency traded on any given construction project. At Ground Penetrating Radar Systems, our everyday efficiency in operations allows us to respond to the immediate needs of our customers, often within 24 hours or less.” (

Scan before you plan! This ensures worker safety and saves valuable time by targeting specific areas of concern. GPRS can also provide GPS reports overlaid on Google Earth or overlay information on pre-existing CAD files for future building plans. This is all done in a safe, time efficient, non-destructive manner.

GPRS assists by giving a real-time depth view of subsurface hazards such as reinforcing, utilities, conduit, underground storage tanks, voids, etc. This reduces the likelihood of subsurface obstruction strikes during core drilling, saw cutting, trenching, soil boring, directional drilling, anchoring, and other sub-surface applications.

Ground Penetrating Radar Systems uses the GSSI (Geophysical Survey Systems, Inc.) Sir-4000 technology in locating. GPRS also uses the RD-8100 Locator to locate live power and radio frequency (RF) signals underground. We can also detect utilities in or under concrete via induction or conduction with an exposed or known surface utility line.

For questions or quotes on any subsurface locating in the Midwest with fast response times and easy scheduling, please contact:

Zack Walter
Project Manager – Midwest Division
Direct: 224-563-4445

Also, feel free to check out our website or subscribe to our newsletter using the following link!

GPRS Verifies Concrete Thickness and Reinforcing at Philadelphia Facility

At a warehouse located in Philadelphia, Pennsylvania a Contractor contacted GPRS to conduct ground penetrating radar scans of the warehouse floor to ensure the concrete depth was sufficient in areas where heavy loads of copper piping were located. As scans were performed, the depth of the concrete was written on the surface in marking paint so the client could review all of the findings. GPRS was able to perform the scans in a timely manner and found multiple locations where the concrete was less than sufficient.

For more information or a quote about a job in Philadelphia, Allentown, New Jersey, and Delaware contact, or call (609)350-9651, and visit our website at

Concrete Scanning to locate Embedded Conduits inside an Assisted Living Facility

Prior to saw cutting concrete floor slabs, it’s important to have information on what lies beneath the surface. In many instances during construction of buildings, conduits & other utilities will be placed in the actual pour of the concrete floor or just beneath the concrete floor. It’s essential to have any possible conduits identified prior to saw cutting to ensure the safety of the workers involved with the project & to also prevent any delays.

A general contractor had to saw cut the floor in numerous areas throughout an existing assisted living facility that was being renovated in Sterling Heights, MI. They decided to saw cut the floor prior to having it scanned & struck a conduit that was feeding the heaters inside the rooms. After the incident, the contractor decided to have the rest of the areas where saw cutting was going to occur scanned for any additional conduits. They needed to know the paths of the conduits or any other obstructions prior to having a saw cutting company continue with the cutting process. The contractor couldn’t afford to have any more existing utilities compromised during the demolition. Ground Penetrating Radar Systems of the Ann Arbor & Detroit areas was contacted to conduct a GPR investigation of the floor to locate any utilities sub-surface prior to saw cutting. GPRS was able to scan the different areas with a 1600 MHz high resolution antenna & determine if any live power was passing through using the RD8000 (Radio Detection Device). They marked the paths of existing conduits passing through the proposed areas directly on the surface. There was a centrally located electrical closet where all the conduits were being fed from. The GPRS technician then walked the site contact through the building explaining everything they had located. It’s important to have everyone on the same page as far as what the markings are explaining. The general contractor was able to continue the project without having to worry about existing utilities being compromised & anyone on the job being hurt.

GPRS helps to create a safe working environment for all construction personnel on-site. The next time you need ground penetrating radar at your site in Michigan, contact Area Manager, Thaddeus Bullock at 734.377.4551 or Please visit our website to learn the full capabilities of GPRS.

Concrete Scanning before Coring or Saw-cutting

Ground Penetrating Radar Systems of Arkansas received a call from a general contractor working in Little Rock with concerns about what may be in the slab prior to core drilling in a bank. He asked what type of results he could expect when scanning concrete elevated slabs prior to core drilling.

GPR can locate conduits, tension cable, rebar, slab boxes, voids and more, which allows for incident-free drilling or sawing. Knowing where to cut and where not to can help maintain the integrity of a project, as well as prevent costly or even dangerous incidents.

While onsite, site GPR was able to locate post tension cables in all 10 of the contractor’s coring locations. We cleared an area in each location for the contractor to core so that there would be no issues or danger involved when core drilling.

We also let him know about our outdoor utility locating services. Excavating outdoors is often quite a challenge with the huge amount of infrastructure underground, including electrical lines, pipes, gas lines and tanks that are in the ground. The “811” service is in place to locate public utilities, however, they do not locate private utilities, which are just as dangerous.

Unfortunately, we all too often receive calls about clients needing our services after they cut or damaged conduits or tension cables, but it is our mission to provide these services prior to the incident, so it is encouraged to make it common practice to include concrete mapping or locating (concrete or utility) in your quotes and bids.

When you are cutting or coring concrete, it is important to have it scanned. Utilizing GPR on your project can help reduce injury, reduce lost productivity, and maintain that incident-free professionalism that you demand. Our safety culture is comprehensive, ongoing, and guides the manner in which we all do our jobs.

Ground Penetrating Radar Systems of Arkansas is available to service the concrete scanning and private utility locating needs of Arkansas. GPRS is a nationwide company; your local GPRS representative’s contact information can be located HERE. Our insurance certificate (COI) and W-9 can also be downloaded HERE.

For videos and more information about services that GPRS offers, please contact Ethan King at or (501) 251-4036.

Utility Locate in Dallas

Ground Penetrating Radar Systems was contacted by a communications company to clear a long directional boring of all utilities for approximately 1,872 feet.  The contractor had many issues in the past with striking underground utilities with the directional boring and was required to use a company to clear the directional boring path for all future projects prior to drilling.  The contractor was drilling to put in fiber optics throughout the entire apartment complex in Dallas, TX.  This created many issues because of the site’s age.  The apartment complex was so old that many lines have been tampered with, redirected, or abandoned.  This created difficult site conditions for the locators on site and added difficulty to the drilling process by raising the risk of hitting old lines that could have been overlooked since they may be dead or no longer in use.  Ground Penetrating Radar was able to come out within 48 hours and successfully located all critical lines prior to the drilling process.  This gave the contractor a successful project creating more work for both parties in the near future. 

Ground Penetrating Radar Systems used a 400 MHz antenna for this application and a Radio Detection (RD) device to detect electrical current deep in the soil.  All findings were marked with SUE marking paint directly on the surface for easy interpretation by the customer.  GPRS’ 400 MHz antenna was ideal because of its accurate, deep penetration and the open, clear area the technician had to work.  GPR was ideal for this application due to the active work site in the surrounding areas.  GPR emits no radiation and is safe for others to work in the area near the scan location. 

For a similar scan on your job site please contact Adam Kubicki at 972.922.0223 or at  Ground Penetrating Radar has also been used to locate critical reinforcement inside concrete such as rebar, post tension, conduits, etc. GPRS is a nationwide company and has performed jobs in areas such as Fort Worth, Arlington, Tyler, McKinney, Waco, and Carrollton, TX.  For a sonar and x-ray scan on your job site, please contact your local technician.