The use of nondestructive in situ investigation methods, integrated with surface evidences, increases the detail and precision on subsoil knowledge and the optimization (in terms of design parameters, location and number) of invasive tests use. Geophysics does not replace geotechnics but rather complements it contributing in increasing the accuracy of measured engineering parameters and the optimization of engineering strategies.


  • State of the art instrumentation and software for the implementation of the latest technologies and standards.
  • Wide range of equipment (for all geophysical methods and applications) sized to different industrial-scale projects.
  • Multidisciplinary methods integration.
  • Extensive experience in national and international projects.
  • Capability to operate in a wide range of environments (urban, industrial and any kind of field).
  • Highly trained and motivated graduates from the best national and international universities.
  • High preparation and operational security standards.  National security and safety requirements compliance.


In TRX we are specialized in non destructive / non invasive and multidisciplinary data integration applied to:

Geological Engineering

  • “Rock” depth definition and substratum stratigraphic and lithologic characterization.
  • Physical parameters determination.
  • Identification of fractures, cavities and discontinuities of geological or structural nature.
  • Hydrological research (resources identification, characterization and monitoring).

Site Characterization

  • Soil physical - chemical characterization studies.
  • Resistivity surveys to evaluate soil aggressivity conditions (for cathodic protection design) and grounding systems in electrical and industrial structures.
  • Water studies.
  • 3D Identification and mapping of buried objects (cables, utilities ...).
  • Construction sites subsoil geotechnical characteristics and elastic parameters definition (soils and rocks).
  • Soil improvement 4D monitoring (using shear waves).

Seismic Hazards & Local Seismic Response Assessment

In this specialty TRX, with US and Europe trained personnel, offers the use of modern “in situ” testing and modeling characterization tools implementing the latest international standards.

  • Historical data compilation.
  • Geo scientific site specific characterization (Substratum geotechnical/geological/geophysical depth, seismic stratigraphic sequence) as a complement to existing surface geotechnical studies.
  • Definition of geologic hazards.
  • Vs500 depth definition (in compliance with Covenin-PDVSA standards for spectral form selection). 
  • Tomography and volumetric assessment of shear waves (Vs).
  • Definition of dynamic parameters (Poisson, Gmax, Young, Bulk and edometric moduli).
  • Seismic Microzonation (Grade 2). Site specific assessment with seismic methods.
    • Definition of the equivalent rock depth (Vs> 700m/s).
    • Determination of the Fundamental Period T (Nakamura and HVSR methods), DAF (Dynamic Amplification Factor).
    • Vs30 definition & Soil classification (Covenin-PDVSA, NEHRP-IBC-ASCE).
    • Calculation of Surface Amplification Factor.
  • Use of latest attenuation curves (NGA,…). Definition of target spectrums.
  • Accurate selection of the reference (project) earthquake. Selection of real and artificial earthquakes, spectral matching with target spectrum.
  • Seismic risk probabilistic and deterministic assessment.
  • Linear and Nonlinear Modeling (grade 3 seismic microzonation).
    • Seismic response analysis - NGA curves
    • Peak ground acceleration (PGA)
    • Peak ground velocity (PGV)
    • Elastic Response Spectrum (Covenin-PDVSA, NEHRP, IBC, EC8).
    • Spectrum of velocity and displacement.
    • Dynamic Analysis, etc.

These studies provide real data and site specific response conditions (and not tabulated generic values) allowing structural engineers to analyze possible soil structure interaction parameters and optimize project design.

Geological and Industrial Risks

  • Characterization of areas with unstable slopes and landslides risks.
  • Definition of fractures, shears, ...
  • Definition of cavities – karsts -  scour – erodability - settlements conditions in soils below already constructed structures.  
  • Soft soils, clays characterization and liquefaction risk definition.
  • Levees and dams integrity evaluations.
  • Vibration analysis / monitoring in industrial-construction environments, blasting monitoring.  Structural and human affectation evaluation.

Structural Characterization

Civil Engineering

  • Non-intrusive inspection of structures and construction sites. Rebars and reinforcements mapping.
  • Integrity testing of foundations (piles, walls …) in quality control, audit of newly constructed or existing foundations.  
  • Characterization of the physical, hydrological, geological and structural conditions under and behind structures.
  • As Built construction engineering parameters definition (eg, pile length, steel distribution inside concrete structures, foundations unknown conditions, etc.).
  • Seismic requalification of existing structures (bridges, towers, residential & industrial buildings...).
  • Site Assessment (soil type, obstacles, pipes, etc.) along the pipeline route or horizontal directional drilling (HDD).
  • Tunnels Studies:
    • Rock/soil in situ physical properties characterization (dynamic, static, etc.).
    • Identification of fractures, shears, weak zones,….
    • Characterization of vault thickness, etc.
    • Characterization of physical and geological conditions behind the vault (scour, water...)

    Transportation Engineering (Roads, Highways, Airports and Railways)

  • Multidisciplinary integrated studies of new transportation routes and characterization and monitoring of existing ones.
  • Nondestructive characterization of pavement and substratum (base, sub base...). High resolution GPR investigations.
  • Ballast condition assessment in railways networks (thickness, regularity, pollution.).
  • Identification and mapping of buried objects (pipes, old structures...).
  • Identification and characterization of cavities, scour areas, humidity, soft soils  and settlements.
  • Audit of repaved / reconditioned pavements.
  • Integrity studies of bridge decks - foundations, buildings and structures.


  • Archaeological studies.
  • Forensic studies.
  • Police investigations.
  • Banks and penal institutions security evaluations.
  • Esoteric geophysics


  • TRX is leading in application and integration of noninvasive methods, the operative key in urban and industrial environments.

Investigation Methods in Urban/Industrial Areas

The particular challenging environment requires the development of specific technologies and investigations methods in urban/industrial areas. The mostly used methods in Earth Sciences are remote sensing, geology, geochemistry and geophysics. These methods are generally integrated, in a multidisciplinary form using a geographic information system (GIS), with social, economic, cultural, architectural and public health (among others) data. Data integration allows the understanding of various problems and programming of a planned urban and environmentally sustainable development. In relation to the subsoil, the sensitivity of the urban/industrial environments obliges in using noninvasive geophysical and non-destructive techniques. Among these, the technique which is emerging as a standard in subsoil investigation in urban/industrial areas is the radar (GPR). Similarly, innovative methods such as seismic vibration analysis and refraction micro tremors – ReMi/MASW (surface waves methods) contribute to geotechnical and civil engineering investigations obviating the limits of standard seismic techniques.

Specialization areas of the TRX multidisciplinary group

  • Urban geology.
  • Geologic and seismic risk assessment.
  • Surface Waters and Groundwater.
  • Waterfronts (coasts, beaches, harbors, etc.).
  • Waste Monitoring.
  • Environmental monitoring and prevention (EPA phase 1 and 2).
  • Sub services and buried objects.
  • Soil classification for construction.
  • Energy resources management.


  • Urban/industrial geology.
  • Geochemistry (sampling, analysis and interpretation).
  • Geophysics. In particular GPR, vibration analysis, micro tremors seismics.
  • Remote sensing.
  • Risk analysis (naturals and industrial).
  • Characterization of urban and industrial sites.
  • Identification and characterization of contaminants in water and soil.
  • Characterization of toxic spills and leaks.
  • Detection and monitoring of contaminant plumes in groundwater.
  • Contamination studies in gas stations and oil distribution areas.
  • Inventory of environmental liabilities.
  • Environmental Base Line Studies.
  • Detection and mapping of utilities, UST and underground objects.
  • Characterization of subsoil foundation design (characterization of soil, rock depth, rippability...).
  • Seismic zoning. Definition of local seismic response and response spectrum.
  • Seismic Requalification of buildings / facilities.
  • Analysis of vibration during construction and industrial operations, structures and human affectation.
  • Blasting/excavation/demolition monitoring.
  • Characterization and monitoring of pits, landfills, waste areas.
  • Physicochemical characterization of soils and waters.
  • Identification and inventory of renewable resources (water and vegetation).
  • Multidisciplinary data integration of GIS-CAD methods.

With time TRX has been promoter and pioneer in multidisciplinary services integration and the application of latest technologies in characterization and development of water resources. The use of geo-scientific tools focused on subsurface knowledge, water resources and monitoring, represents the warranty of an optimized exploration and harmonized/sustainable development of local water systems.


  • Water resources for urban and agriculture
    Exploration, development, management and protection of water resources.
  • Water management in Industries
    Water research projects, pollution and industry remediation.
  • Water management in Oil Fields
    Integrated view to the water resources study, its protection, sustainable management and environmental management.
  • Water management in Mining
    Solutions to water projects in all phases of a mining project.


  • Specialists in exploration, characterization of groundwater resources and drilling location optimization.
  • Design of water well and water distribution systems. 
  • TRX provides the most complete and powerful geophysical instrumentation in the country to ensure success in groundwater exploration in any geological/logistic environment and at great depths (up to 500-1000 m and more).
  • Distributors of hardware and software of Schlumberger Water Services (SWS). This allows us knowledge of advanced measurement techniques and data processing, and support of a leading consulting firm in hydrogeology.


  • Remote sensing, analysis of digital terrain models
  • Regional hidrogeological studies.
  • Geological, geomorphological and structural mapping.
  • Geochemistry of soils and waters.
  • Surface geophysics. Specialists in deep exploration.
    • VES & Electrical Resistivity Tomography ERT
    • Seismics
  • Well Logging
    • SP, SPR, Natural Gamma, FWS
    • SWS Diver Sensors
    • Temperature, Conductivity, pH
  • Borehole digital Tele camera (high-resolution, color and 360° rotation capability).
  • Numerical analysis of pumping tests, calculation of hydraulic parameters (K, T, S) and efficiency in production wells.
  • Multidisciplinary data integration with GIS methods.
  • Advanced numerical systems of groundwater resources modeling.

Interpretation and Processing Software Available

    AquiferTest, AquaChem, VisualMODFLOW, HydroGeoAnalist (Schlumberger Water Services), Sada-Spatial Analysis & Decision Assistance, Arcview, Mapinfo and others

TRX contributes to the environmental consulting and service sector providing advanced technologies in acquisition, processing and interpretation of real data that support baseline studies, evaluation - impact, monitoring and environmental auditing. The integration of multidisciplinary specialists in the area provides the optimal combination of data analysis, drafting of studies, reports and documents compliance with the regulations.


  • Characterization of urban & industrial sites (EPA Phase I and II).
  • Detection/characterization of soil, air and groundwater pollution.
  • Mapping of services and buried objects (pipes, tanks...). “As built” studies.
  • Pipes, tanks, tailing ponds, leak detection.
  • Characterization and monitoring of industrial waste areas, oil pits and landfills.
  • Characterization of gas stations and oil installations (utilities- sub services-pipes-UST mapping, structure integrity, leakages, affected aquifers).
  • Emission studies of radon and radiogenic elements.
  • Vibration monitoring.
  • Multidisciplinary data integration.
  • Inventory/mapping of environmental liabilities.
  • Classification and land use planning.
  • Risk Analysis (natural, geological and industrial).

Processing and Interpretation Software Available

  • Sada (Spatial Analysis & Decision Assistance), AquiferTest, AquaChem, VisualMODFLOW, HydroGeoAnalist (Schlumberger Water Services), Arcview, Mapinfo, Discover.

TRX is formed by a group of expert professionals to ensure logistics operations and exploration in the harshest environments as the Amazon jungle and Andean reliefs, among others.



  • Local and regional geological Studies.
  • Data compilation.
  • Airborne and ground geophysics acquisition and interpretation.
  • Geochemical sampling.
  • Advanced processing and integration of airborne/ground geophysical and geochemical data.
  • G.I.S. and CAD systems applications.

Construction, Industrial & Decorative Materials

  • Characterization of aggregate materials for construction (sand, gravels, etc.).
  • Industrial materials characterization (clays, kaolin, limestone, etc.).
  • Decorative materials characterization (granite, marbles, travertine, etc.).


  • Airborne geophysical surveys.
  • Airborne geophysical data (gravity, magnetic, radiometric and electromagnetic) interpretation and integration with geo scientific data bases.
  • Acquisition and processing of ground gravimetric, magnetic, electric and electromagnetic data. Seismic refraction.
  • Site characterization prior to seismic reflection studies.
  • Vibration monitoring during blasting near urban centers, etc....
  • Geophysical data modeling.

TRX offers the combination of latest technologies and multidisciplinary experts in monitoring of human activities and their effects on the environment. Understanding these problematics allows an optimal design of remediation engineering activities.


Application of state of the art techniques in:


  • Water Analysis in surface waters and boreholes.
  • Effluents monitoring.
  • Drainage sampling and study.
  • Water use consulting.


  • Polluted sites characterization.
  • Investigation of contaminated industrial sites (Brownfield type), EPA phase I and II.
  • Remediation and landfarming monitoring.
  • Soil characterization in agricultural applications.

Air, Gases & Particles

  • Air quality.
  • Control and quantification of gas emissions.
  • Contamination of operators in industrial processes.
  • Industrial risks.
  • Suspended particles sampling


  • Noise level studies (sound pressure) in occupational environment related to traffic, industrial, construction and mining activity.
  • Noise map elaboration.
  • Frequency Analysis (noise spectrum).
  • Acoustic impact.
  • Occupational Health.


  • Vibration monitoring in occupational environment.
  • Vibration monitoring related to industrial activities (excavation, blasting, etc.).
  • Analysis of structures and human affectation.
  • Structural requalification and infrastructures seismic (bridges, dams...).
  • Industrial risks.

Electromagnetic Pollution

  • Electric and magnetic field intensity.
  • Power density.
  • Exposition perimeter.
  • Risk analysis.
  • Cathodic protection affectation analysis.

Radiogenic Emissions

  • Radiometric spectrum analysis.
  • Radon monitoring.
  • Radiometric waste identification.
  • Spill detection