Our case stories

Case stories

How have we helped solve challenges to date? Here are some of the cases where Guideline Geo has helped provide answers.

The list of cases where Guideline Geo has provided technology and services to help our clients achieve their aims stretches back over history. The following examples provide some insight as to the breadth and variety of challenges that we have been involved with.

ERT-Based Subsoil Assessment to Support Reliable Foundation Design

Supporting safe foundation design using Electrical Resistivity Tomography (ERT)

Finding Groundwater for a Durian Orchard using TEM

Finding Groundwater for a Durian Orchard using Transient Electromagnetic (TEM)

Novel use of drone-based GPR to map peat soils and biogenic gas production

Drone-based Ground Penetrating Radar (GPR) enabled a time-efficient and repeatable mapping of peat soil thickness and biogenic gas production

Unveiling Cemetery Secrets with Ground Penetrating Radar

Hidden underground graves detected with advanced GPR methods.

Mapping acid mine drainage in Brazil

The generation and transport of AMD (Acid Mine Drainage) was effectively outlined with a combination of electrical resistivity tomography (ERT) and induced polarization (IP) measurements.

Mapping of high salt concentration water areas in Colombia

The survey results were consistent with the previous knowledge of the sites' geology and therefore concluded a presence of salt deposits.

Mapping new deposits for increased nickel demand

TerraLog Services provides geophysical services and contracting focused on the exploration of coal, iron, nickel, gold and other minerals

Threats to the ground water table

The site of an old dry cleaner facility was investigated to map the spread of tetrachloroethylene, a highly carcinogenic solvent used in dry cleaning, in Kristianstad, Sweden.

Gladiator training camp discovered

The Carnuntum ruins are part of a city of 50,000 people, 28 miles (45 kilometers) east of Vienna that flourished about 1,700 years ago, a major military and trade outpost linking the far-flung Roman empire’s Asian boundaries to its central and northern European lands.

Preservation of aquifer during re-route on highway

Due to the increased traffic intensity on the E22 highway and limited possibilities to broaden the road, a new solution needed to be drawn up to ensure the flow, safety, and environmental concerns.

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Prevention of environmental impact or damaging of archeological features

With the help of GPR, ICE is exploring the subsurface without impacting the environment or damaging archaeological pieces.

GPR plays an important role in the unsealing of the legendary tomb of christ

A historic agreement was reached between the three Christian communities the historic Guardians of the Holy Sepulchre, a rehabilitation project of the Holy Aedicule of the Holy Sepulchre was implemented, including the subsurface mapping of the environment in its vicinity.

Geophysical identification of permafrost in Antarctic

Geophysical surveys on King George Island aimed to assess permafrost depth and detect melt zones, as warming temperatures threaten the stability of Antarctic base foundations anchored in permafrost.

GPR identification of ash layers and water tables in Iceland

GPR was used on Iceland’s Vatnajökull glacier to study the 2011 ash layer and track water dynamics in cauldrons like Skaftárkatlar, linked to glacial floods (jökulhlaups

GPR for Subsurface utility engineering

Why is it important to scan the subsurface for underground utilities before starting a construction project? This large medical university, as well as Florida-based power company knows that “As Builts” doesn’t always reveal all utilities hidden underneath

Underground utility locating data examples

Hidden underground utitlies can be detected with advanced GPR methods before excavations. What does the collected data tell you?

Fresh water intrusion in saline aquifer

The Netherlands’ low-lying landscape causes saline groundwater, with freshwater from IJsselmeer slowly seeping into nearby polders through natural leakage from surrounding higher areas.

Prospecting of groundwater in Bolivia

Cofadena, an important client in Bolivia, procured the ABEM Terramenter LS, which met their requirements. To date more than 180 tomographic lines and more than 120 wells have been drilled with abundant water.

Utility locating with MALÅ MIRA in Italy

The MALÅ MIRA system from Guideline Geo has been used successfully at several different locations around Italy, to map different types of underground utilities and infrastructure.

Bedrock mapping – South of Stockholm Sweden

MALÅ GPR instrument is used to map the depth to bedrock in an efficient way. Knowledge of the underground conditions is essential.

Bedrock and aquifer mapping south Sweden

See how GPR technique is used to examine the ground. Bedrock mapping and possible ground water withdrawal investigations.

Mapping depth to bedrock – Arabian peninsula

The project was initiated and coordinated by Guideline Geo’s distributor in the region and the results show the ability of the TEM (Transient Electromagnetic) method to map the depth to a subsurface bedrock interface.

Prospecting for groundwater reservoirs, north east Netherlands

In 2017, the Dutch consulting company Wiertsema & Partners did a groundwater-mapping project for the water supply company, Vitens.

Mapping groundwater resources in buried paleo channels

Authorities as well as commercial enterprises and individuals are initiating investigations in order to find and protect both national and local groundwater resources.

Monitoring fresh/saline interface

For Dutch water company PWN, consultants mapped groundwater near the North Sea using data from a 2013 airborne SkyTEM survey. The goal was to enhance understanding of subsurface water systems in the coastal region.

Mapping deep groundwater resources – Arabian peninsula

The project was initiated and coordinated by Guideline Geo’s distributor in the region and the purpose was to show the ability of the TEM (Transient ElectroMagnetic) method to map depth, quantity and quality of the groundwater resources.

Marine geophysical survey in subway extension project

To extend Stockholm’s subway under Saltsjön Bay, bedrock quality was assessed using methods suited for marine conditions, gas detection, and urban electrical noise.

Astacus – Large scale utility mapping

High-density GPR arrays enable fast, detailed utility mapping in urban areas—more efficient and accurate than single-channel systems.

Landfill gas detection with resistivity

Resistivity investigations can be used to map, monitor and locate gas extraction wells or carry out remediation work.

Landfill and industrial site mapping with resistivity and induced polarization

Resistivity and IP are effective for mapping old landfills and industrial sites, helping define their extent in both plan and depth for future land development.

GPR structural survey in one of the first reinforced concrete buildings

Seismic vulnerability of a reinforced concrete building in Messina was assessed using geophysical methods, crucial in this high-risk area rebuilt after the 1908 earthquake.

Structure mapping of landfills with resistivity and induced polarization

Combined resistivity and IP measurements effectively reveal landfill structure, helping predict waste extent, contaminant spread, gas content, and soil stability.

GPR Imaging of the Western Wall

GPR was used in 2020–2021 to study the structure and size of ashlars on parts of Jerusalem’s Western Wall during a Geo-Sense investigation.

High resolution subsurface mapping using MIRA HDR

High-resolution GPR was used to assess subsurface conditions at a former industrial site in southern Stockholm, supporting its sustainable redevelopment into housing and offices.

Resistivity and GPR combination results in better understanding

Combining resistivity and GPR revealed weak, water-conductive limestone layers along profiles and confirmed low erosion rates, ensuring building safety for 120 years.

Resistivity Investigations to map Groundwater sources

ERT was used in Western Småland to investigate geology for a groundwater source, identifying promising drill targets in sediments and fractured bedrock.

Heat pipes and electrical wires revealed in a wooden house

High-frequency GPR successfully mapped heat pipes and electrical wires in an old home, providing essential data for efficient renovation planning.

GPR investigations at the Castle of Monteagudo

GPR was efficiently used at Monteagudo Castle in Andalusia to detect archaeological remains, mainly linked to former castle structures.

Resistivity investigations for geological mapping in the Scottish Highlands

ERT was used to investigate geology in the Scottish Highlands for a hydroelectric project, successfully pinpointing an expected fault zone in greater detail.

Mapping fiber optic cables with GPR

GPR was used to locate fiber optic cables in a road, helping prevent damage and accidents through crucial pre-excavation planning.

UAV- or drone-based GPR was successfully used to map ice thickness.

Drone-based GPR successfully mapped ice thickness on a Swedish lake, ensuring fast, safe assessment of ice conditions before a car racing event.

Mapping of hydrocarbon contaminants with Electrical Resistivity Tomography (ERT)

ERT effectively distinguishes natural ground from hydrocarbon-polluted areas, helping map pollutant spread and plan remediation.

Resistivity Investigations for a Water Storage Dam project in Pakistan

ERT was used to assess subsurface conditions for a new dam on the Chenab River, identifying geology, structures, and groundwater, supported by drill and test pit data.

Subsurface evaluation of copper ore deposits

ERT and IP were used in Waziristan, Pakistan, to investigate copper ore deposits. Possible sulfide-rich zones were identified and visualized in 3D.

Joining geotechnical investigations with geophysical results

Bjerking AB combines geophysical and geotechnical data for high-quality infrastructure planning. Three case studies show joint use of resistivity, GPR, and seismic methods with geotechnical soundings.

Manganese ore exploration using electrical resistivity and induced polarization methods

ERT and IP surveys in Malaysia’s Central Belt mapped geophysical anomalies interpreted as massive and disseminated manganese ores.

Groundwater prospection

A comparative study of Single Channel and Hand-Pushed Array Ground Penetrating Radar (GPR) Systems for Utility detection

A study in Gainsborough, UK, compared single-channel GPR to high-density arrays for utility detection. GPR arrays offered faster data collection, higher resolution, and better ROI for larger projects.

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