Rebar located with ground penetrating radar (GPR) by GeoModel, Inc.GeoModel, Inc. Logo




Ground Penetrating Radar in Hawaii

Email us at Click here for or phone 703-777-9788

red dotGround penetrating radar locates almost anything underground
red dotGround penetrating radar makes an underground "picture"
red dotGeoModel, Inc. conducts ground penetrating radar surveys anywhere in Hawaii
red dotCertified Professional Geologists with 20 Years of Experience
red dotCertified 40-Hour OSHA, TWIC, ISNetworld Professionals

ground penetrating radar or gpr of buried tanks surveyed by GeoModel, Inc.

Ground Penetrating Radar Applications

underground 4-way scan for utility locationutility and pipe location
ground penetrating radar for USTtank (UST) and drum location
GPR for gravesitescemetery surveys and grave location
GPR underground scanning for concreteconcrete and rebar inspection
ground radar for sinkholessinkholes and karst
ground penetrating radar for geologygeology (bedrock) and geologic hazards
brine pits
landfills and burial trenches
ground radar for archaeologyarchaeological studies

Where do GeoModel, Inc. is interviewed by David Ensor of CNN about ground penetrating radar (gpr)and GeoModel, Inc. is interviewed by Greta Van Susteren of Fox News about ground penetrating radar (gpr) get their information on ground penetrating radar?

Ground Penetrating Radar
GeoModel, Inc. is registered with the FCC and uses only FCC-approved GPR equipment

Ground penetrating radar (GPR) produces an underground cross-sectional, two-dimensional image of the soils and subsurface features. Three-dimensional GPR images, such as the one below, can be produced using raw field data and post-processing software.

3-D image of underground pipes from ground penetrating radar (GPR) data obtained by GeoModel, Inc.


GeoModel, Inc. conducts ground penetrating radar surveys using antennas with various frequencies. Depths of ground penetrating radar (GPR) can be as deep as 30 to 40 feet (10 to 15 meters) in sandy or silty soils, using a low frequency ground penetrating radar antenna. A higher frequency antenna can examine the near surface, from 0 to 10 feet (0 to 3 meters), in greater detail. The ground penetrating radar signal does not go as deep in clayey soils. GeoModel, Inc. has soil maps of Hawaii that indicate the suitability of GPR.

For basic operating principles of ground penetrating radarClick here

Shallow Ground Penetrating Radar Surveys

Shallow ground penetrating radar surveys are conducted by one person, hand-towing or ATV-towing the antenna.

Hand-towed GPRground penetrating radar of buried pipes


red dotlocate pipes and utilities
red dottank (UST) and drum location
red dotconcrete and rebar imaging
red dotunmarked cemetery and grave location
red dotarchaeological studies
red dotother shallow buried objects



aerial photograph of ground penetrating radar and EM utility location survey areaAs-built utility map based on ground penetrating radar (GPR) data and metal detection (EM) data obtained by GeoModel, Inc.aerial photograph of same GPR and EM GeoModel, Inc. survey area

Aerial photograph of survey area (on left, above), GeoModel, Inc. As-built utility map based on ground penetrating radar (GPR) and metal detection (EM) data (center, above), and an aerial photograph of the same GeoModel, Inc. GPR and EM survey area after construction has begun (on right, above).


GeoModel, Inc. can also conduct ground penetrating radar (GPR) scanning of concrete slabs, walls, and abutments and of asphalt roads and surfaces to locate rebar, pipes, and conduits. Our ground radar scanning can also detect voids within concrete slabs and under concrete slabs and asphalt surfaces.

concrete inspection survey using ground penetrating radarrebar in concrete and pipe in concrete


GeoModel, Inc. conducts ground penetrating radar surveys for locating unmarked grave sites and confirming marked grave sites at cemeteries.

GeoModel, Inc. can conduct a low-cost GPR survey that includes detecting graves and marking their locations on the ground in the cemetery as shown below.

Unmarked graves located with GPR by GeoModel, Inc.Unmarked graves located by GeoModel, Inc.


At additional cost to the field marking only survey above, GeoModel, Inc. can provide a cemetery site map with the grave sites plotted on it (below left). GeoModel, Inc. can also prepare a 3-D visualization of the cemetery survey as shown below (right), but the cost is higher due to more detailed field GPR data collection and processing.


GeoModel, Inc. site map showing locations of marked and unmarked graves3-D presentation of ground radar data for a small cemetery site by GeoModel, Inc.

Deep Ground Penetrating Radar Surveys

Deep ground penetrating radar surveys are conducted with a low frequency GPR antenna, by hand-towing, ATV-towing, or truck-towing the antenna.

Applications include:

red dotlandfill and burial trench delineation
red dotgeology (bedrock and soils) studies
red dotkarst and sinkhole (geologic hazards) investigation

Vehicle-towed GPRTrenches located by GeoModel, Inc. using ground penetrating radar

Top of Bedrock Profile located using ground penetrating radar by GeoModel, Inc.Sinkhole Located with ground penetrating radar (gpr) by GeoModel, Inc.


Supplement to Ground Penetrating Radar Survey

At some project sites, the soil has too much clay for an optimal ground penetrating radar survey. As a supplement to a GPR survey, GeoModel, Inc. can create a GeoModel Map (Site Scan Map) of your property. GeoModel, Inc. uses EM and metal detection instruments and computer processing to create a full color contour map of high and low ground conductivity measurements. Relative changes in ground conductivity can show areas of buried metal utilities, pipes, drums, tanks (USTs), burial trenches containing metal, or areas of increased or decreased conductivity.

Mapping is done automatically using a vehicle or ATV driven system. Results can be obtained in a short time period, making our system cost-effective for large industrial sites, as well as for smaller sites. Metal utility lines, and most other conductive utility lines, can be mapped using our unique technique.

truck mounted electronic instrumentation with GPS positioningATV mounted electronic instrumentation with GPS positioning


truck pulled electronic instrumentation with GPS positioningDeep EM response to buried metal pipeline

GeoModel Map, Truck-Mounted Deep Pipeline Detection System (On Left) and Deep EM signal response to buried metal pipeline (On Right)


The contoured GeoModel Map (below left) was made by GeoModel, Inc. using an EM instrument to collect field data, processing software to grid the field data, and 2D visualization software to produce the GeoModel Map color image. The site map (below right) shows the locations of metal and conductive pipelines detected by the EM instrument in the same area as on the left.

Metal detection contour map produced by metal detector survey data and visualization software by GeoModel, Inc. Locations of Metal Pipelines Located based on results of an EM metal detection survey conducted by GeoModel, Inc.

For more information about having a GeoModel Map survey on your siteClick here

GeoModel, Inc. can locate other metal and conductive objects and features using the EM and metal detection methods. The image below (left) shows the results of a GeoModel, Inc. EM survey, for landfill and burial trench delineation. The EM contour map below (right) shows the location of a sinkhole identified by the higher conductivity values due to increased groundwater in the sinkhole. The EM data was collected by GeoModel, Inc. along with GPS measurements and the EM data was contoured by GeoModel, Inc. using EM data processing and visualization software.

EM Contour Map - GeoModel, Inc.Sinkhole Located by GeoModel, Inc. by Identifying Area of High Conductivity (Increased Water Content) Using EM Measurements

GeoModel, Inc. also uses EM and metal detection surveys to locate inorganic contaminant plumes. GeoModel, Inc. conducts EM and metal detection surveys using the GeoModel, Inc.-owned equipment shown below:

EM instrumentEM Field Survey

Various EM instruments and metal detectors owned and operated by GeoModel, Inc.

EM hand-held Field Survey

For more information about the Electromagnetic Conductivity and Metal Detection methods, click the button to the rightClick to learn more about the EM method

For a ground penetrating radar survey in Hawaii,
click on the e-mail link below:


e-mail: GeoModel e-mail for ground penetrating


or give us a call at (703) 777-9788

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