Ground Penetrating Radar Scan Performed in Mojave, CA

Ground Penetrating Radar Scan performed in Mojave, CA Ground Penetrating Radar Systems, Inc. – GPRS – of Southern California was contacted by an energy company in order to scan for utilities prior to mobilizing a crane. We were asked to scan an approximate area of 500’x300’ on an existing wind farm; the area we scanned was for a large crane that was to be stationed there. We first scanned the area using Radio Detection and found a high voltage line running parallel to a dirt road. We then used GPR and were able to confirm a depth on the line; the depth was 4’. Due to the wet conditions of the area scanned, we marked the finding with flags and pins.  No other utilities were found onsite.

GPR scanning is a great tool to use for post tension cables, rebar, and conduits; it can also be used to scan for underground utilities prior to digging or excavating. GPRS has offices throughout the entire state of California and performs projects in cities like; Ventura, Santa Barbara, Thousand Oaks, San Luis Obispo, Bakersfield, Lancaster and the greater Los Angeles area. Please contact Alfredo Espinal at 805-729-5877 or to learn more about ground penetrating radar and how GPRS can assist in your projects.

Photo of area scanned. To schedule service or obtain a quote, please contact Alfredo Espinal 805-729-5877 or

Concrete Scanning for Conduits in a Slab, on Grade in Richmond, VA

Richmond1 Richmond2A saw cutting contractor in Richmond, VA called Ground Penetrating Radar Systems to locate the main power feed within the concrete slab of a grocery store that was being renovated.  GPRS responded with same day service. GPRS was able to mark directly on the surface the depth and location of the live conduits in real-time. In addition, a drain was marked and verified. If the slab had been cut before being scanned, serious damage to life and limb could have been caused.

GPR is a great tool to locate rebar, conduits, and post tension cables.  Ground Penetrating Radar Systems of Richmond and Virginia Beach scans for rebar and tension cables multiple times a week.  If you need any post tension, rebar, or conduit mapping in the Richmond or tri-cities area please contact Josiah Donaldson at 804-393-8744 or at

GPR Used to Locate Structural Steel in Denver, CO

Ground Penetrating Radar Systems, Inc. of Denver, CO was contacted by a General Contractor to locate structural beams below a roof at the Colorado State Capital in Denver, CO. The client was looking to confirm the location of structural beams for the purpose of installing a new roof. GPRS, Inc. arrived on site without delay using digital concrete imaging to accurately locate the structural steel I-Beams under the roof. The applications for ground penetrating radar truly are extensive and vast.
GPR used to locate structural steel

Ground Penetrating Radar Systems, Inc. specializes in ground penetrating radar service and is our primary source of revenue. With that in mind, the amount of experience and specialization of subsurface imaging and investigations as well as a nationwide network of technicians; GPRS, Inc. is unrivaled in the Ground Penetrating Radar industry.  GPRS, Inc. can supply your project with the safest and most accurate ground penetrating radar service in the business. Your safety and job effiency is our main goal at Ground Penetrating Radar Systems, Inc.

If you are interested in learning more about our subsurface imaging capabilities or other Ground Penetrating Radar applications such as locating reinforcement and conduit in concrete slabs, locating Underground Storage Tanks (USTs), clearing boring locations of possible Utilities for soil samples, Void Detection or even graveyard mapping;  don’t hesitate to contact us for a demo or lunch and learn – let us buy your team lunch so we can tell you more about our company and what we can offer your company and projects. Ground Penetrating Radar Systems has an office local in Denver, CO serving all of Colorado and Wyoming as well as local offices in Salt Lake City UT, Albuquerque NM, Phoenix AZ, Omaha NE, and Kansas City. Ground Penetrating Radar Systems, Inc. also has offices in nearly every major city in the United States as well as offices in Canada. Contact Ryan Shannon (Project Manager) at 303.913.8630 or today to schedule an appointment or free demo or if you have any inquiries. Visit for more information on how we can serve you with the many applications of GPR.

GPRS Provides Contractor with Valuable Info about Subsurface Utilities, Footings, and Grade Beams

GPRS, Inc. was contacted by a General Contractor from Milwaukee to investigate an old warehouse/vehicle service center. The purpose of the ground penetrating radar (GPR) and Radio Detection (RD) survey was to locate utilities, detect buried footings, and possible grade beams. The General Contractor did not have any building plans from the owner. The General Contractor was concerned there were structural grade beams crossing into the main area as well as footings and underground utilities where excavation will occur. The old warehouse/vehicle service center is going to be renovated and changed into a children’s swimming pool facility. Knowing what lies beneath is critical for this project prior to excavating as finding grade beams and utilities by accident could cause structural problems as well as add expense to the project.

Valuable InfoGPRS scanned the area with two pieces of GPR equipment for a more thorough survey of the subsurface. GPRS scanned with a 1600 MHz GPR antenna (concrete scanner) to identify critical targets within the slab and just below the concrete. In addition, GPRS scanned with 400MHz GPR antenna (utility scanner) for detecting deeper targets. The GPR equipment did not detect structural grade beams beneath the concrete. The GPR equipment detected 2 deep sanitary lines (over 4’ in depth) going right through the area where the pool will be put in the facility. These lines went to a manhole outside of the facility. GPRS provided depths of utilities found so excavation can commence smoothly. In addition, GPRS provided concrete thicknesses in multiple areas so the General Contractor could estimate cost for cutting and removal of the concrete. This valuable information GPRS was able to provide the General Contractor allowed for better preparation for the buildout which lead to keeping the project on schedule and under budget.

Valuable Info2Ground penetrating radar is a great tool to scan areas for post tension cables, rebar, and conduits, including PVC pipes and can also be used to locate underground utilities prior to digging or excavating. Please contact Ground Penetrating Radar Systems – GPRS to learn how we can assist with your project. To locate rebar, post tension cables, voids, conduits, pipes or utilities in concrete or underground please contact us today.

Wisconsin GPR Expert: Christopher A. Geary – Regional Manager. Give Chris a call at 414.795.6845 or send him an email at to discuss your project today!

GPRS Scanning for Subsurface Voids in Dallas, TX

Scanning for Subsurface VoidsGround Penetrating Radar Systems, Inc. can identify underground anomalies such as utilities, obstructions, and subsurface voids using non-destructive testing methods. Our technicians have the ability to identify an anomaly’s depth with accuracy of 15% of the depth of the anomaly itself. This is important to note because there are often times when a customer has to excavate to a specific depth in order to install conduits, plumbing, or foundations on remodels and new construction projects. The obvious benefit of having such a high degree of accuracy is that the customer will have an indication of when to hand dig as opposed to using heavy machinery.

dallasGPRS, Inc. offers a response time unrivaled in the industry. Often times, we can schedule your project the same day or within a few days at the most. By delivering fast and accurate service, you can be sure your project remains on schedule and within budget. Our experienced technicians set the bar and offer professional services to meet the needs of the fast paced construction industry.

This GPR scan took place in a parking lot of a local medical center campus in Dallas, TX. The customer needed to determine the locations of the underground utilities prior to excavating the area for a repair to a chilled water line.

David Hagenmayer with Ground Penetrating Radar Systems, Inc., was contracted to scan the area requested and mark out all potential utilities. David successfully located the private utilities and the client was then able to excavate safely and repair the damaged chilled water line.

For over 15 years GPRS, Inc. continues to lead the industry because of our highly trained and dedicated technicians, state-of-the-art equipment, and the passion for excellence. We are the best at what we do, because it’s all we do. Ground Penetrating Radar is cost effective, non-hazardous, and provides data in real time. For GPRS services in North Texas, please call (972) 922-0223 or email We also offer nationwide service. For a local representative, please visit our website at

GPRS Called to an “Explosive” Jobsite in Northern Florida

Jobsite in Northern FloridaWe at GPRS were recently called to a job site north Florida near a state university.  The customer was breaking ground on a city block in order to build a large student housing complex.  While moving dirt to level out the impending foundation, the project manager noticed something sticking out of a pile of recently turned earth.  The cylindrical shape, rounded nose, and four symmetrical tail fins left little doubt that they had unearthed a bomb.  The job site was immediately shut down.  The project manager called the local fire department which in turned notified the bomb squad.  With a little research, he was able to confirm that he had found a WWII era aerial bomb on his hand, and a few questions about his new job site.  That evening the bomb squad strapped some C4 to the bomb and executed a controlled detonation after lowering the bomb into a hole dug out on site for that very purpose.

His next call was to Ground Penetrating Radar Systems.

Arriving the next morning, we were informed that the job site had no military history.  It was a coal depot with a train track running through it in the 40’s and 50’s.  Never-the-less, our job was to locate any additional “ordinances” that might still be buried on the grounds.  Due to the relatively small size of the target anomalies, we would have to run our 400MHz antenna over the entire multi-acre site on a very small grid.  The pattern would only allow for about 12 inches between scans if we were to have a reasonable chance of locating an item the size of that which we were looking for.  After beginning the grid in the area of the site that produced the bomb, several small items in the first 3 to 5 feet of earth were found.  These were carefully dug up by hand to identify.  Pipes, crates, bottles, and other assorted debris were found, but to the relief of our customer, we were unable to locate any additional bombs.  It turned out that the worrisome item they found was buried, decades ago, in what was essentially a pile of junk…not a stash of explosives.

Although the early indications were positive for our customer, we spent the entire day scanning the lot on the afore-mentioned tight grid.  Nothing alarming was found and the job site was back in operation the next day.  In addition to locating utilities, jobs like this one demonstrate the versatility that our technology, and highly trained technicians, are able to employ to further serve our customers.

Please contact Tony Valenti at (407)246-9900 or for any scanning needs that you may have.

GPRS Locates Rebar at the Akron Children’s Hospital

On November 29th, 2016, Ground Penetrating Radar Systems (GPRS) was requested on site by a general contractor to perform a Ground Penetrating Radar (GPR) survey at the Akron Children’s Hospital in Akron, Ohio.  The contractor needed to saw cut and remove 2”-3” of the slab in multiple areas.  The contractor needed to know where the top and bottom rebar was as well as how deep they were to determine how much reinforcement would need to be removed.  GPRS located and marked the rebar with depth indications in the area of concern.  The contractor was told that the top rebar was 3” deep.  GPRS advised that the top rebar was only 1.5” deep.  The contractor was able to chisel down to expose the top rebar and confirmed that the rebar was only 1.5” deep.  Thanks to GPRS, the contractor was able to approve a 1” cut to prevent the rebar from being saw cut.   Call GPRS before you saw cut or core drill the concrete to prevent reinforcement or conduits from being hit!

Below are pictures of the areas scanned with the top (dashed lines) and bottom (solid lines) rebar marked on site.

GPRS Locates Rebar at the Akron Children’s Hospital1

GPRS Locates Rebar at the Akron Children’s Hospital2



Ground Penetrating Radar (GPR)

  • GSSI SIR – 3000
    • GPRS uses a Geophysical Survey Systems Inc. (GSSI) SIR-3000 Radar unit. This is the most advanced GPR available. It allows for onsite interpretation, as well as stores data for later processing. This equipment is self-calibrating, allowing more precise depth and location measurements.
  • 1600 MHz Antenna
    • This antenna allows data collection to a maximum depth of approximately 18”, depending on concrete conditions

Ground Penetrating Radar Systems is the best way to ensure the locations of reinforcement and conduits prior to saw cutting/drilling through concrete.  For more information on how GPRS, Inc. can help you on your next project, please contact Micah Stair at 330-639-8933 or by email at  We also have the capabilities of locating underground utilities, UST’s, and voids.

Locating and Mapping Utilities for Consulting Company

Locating and Mapping Utilities for Consulting CompanyGround Penetrating Radar Systems was recently contacted by a consulting company to locate and map all utilities, as well as investigate a possible underground storage tank at their site on historic Meeting Street in Charleston, SC prior to drilling on site to collect soil samples.

GPRS used the latest ground penetrating technology to provide relevant information about critical utilities, and other potentially dangerous, and problematic areas underground while on site.

The equipment used in the survey was:

  • GSSI Ground Penetrating Radar/ SIR 3000 – This device transmits an electromagnetic pulse through the ground and displays the reflection on a screen for interpretation.
    • 400 MHz antenna – This antenna allows for GPR signal penetration 4’-8’ through the ground.
  • RD-7000 locator – This device detects live power and RF signals underground, allowing us to locate electrical or telephone lines even if they are below the minimum size requirements to be detected by GPR.  It also allows us to detect utilities via induction or conduction with an exposed or known surface of the conductive utility.

While on site, GPRS technician James Ross, scanned approximately 2000 square feet to identify any anomalies that would indicate electrical conduits, water mains, gas lines, and any other pertinent utilities moving through the customers anticipated boring locations. After further investigation at the suspected site we were able to determine that there were underground utilities running through the proposed drilling zone. GPRS plotted the locations of subsurface obstructions directly onto the surface, and provided accurate depths giving the contractor a clear indication of where it was safe to drill borings, as well as where extra caution would be necessary.

Not only did we ensure the safety of the crew by identifying potential life threatening hazards, but also eliminated any potential costly repairs that may have been added to their project due to damaging unknown utilities.

If you would like a price or quote for an underground utility locate, slab on grade, elevated slab, or structural scan to locate important embedments, please visit the “contact us” page at to contact your local GPRS representative.

Local Contact:
James Ross – South Carolina & Coastal Georgia Project Manager