Subsurface analysis companies focus on understanding the layers beneath the Earth's surface. They employ technologies to assess geological, environmental, and engineering challenges related to subsurface conditions. This sector plays a vital role in construction, mining, and environmental management. As sustainability and resource management become increasingly important, these companies are integrating innovative methods and technologies to enhance their services. The future points toward more data-driven approaches and an emphasis on environmental compliance and safety. Given its critical importance in infrastructure projects, the demand for precise subsurface insights is only expected to grow.

The companies in this list vary in size from small firms to larger corporations, with a majority based in North America and Australia. Founded between the 1960s and 2000s, they specialize in areas like geotechnical engineering and environmental consulting. Their expertise extends across multiple sectors, highlighting their adaptability to the evolving needs of clients. Many firms are recognized for their innovative solutions and technological integration into subsurface analysis, showcasing their commitment to quality services as industry demands surge.

Read on to discover more about the top subsurface analysis companies.

Top 22 Subsurface Analysis Companies

1. BGC Engineering Inc.

• Website: bgcengineering.ca
• Ownership type: Private
• Headquarters: Vancouver, British Columbia, Canada
• Employee distribution: Canada 84%, United States (USA) 9%, Chile 3%, Other 3%
• Founded year: 1990
• Headcount: 501-1000
• LinkedIn: bgc-engineeringcom

BGC Engineering Inc., founded in 1990 and based in Vancouver, British Columbia, is a consulting firm that specializes in applied earth sciences. With a workforce of approximately 748 employees, the company provides a comprehensive range of engineering and geoscience services tailored to the mining, energy, transportation, and public sectors. BGC Engineering is recognized for its expertise in geohazard assessment, groundwater management, and geotechnical engineering, which are critical for understanding subsurface conditions. Their services cover all phases of project development, from pre-feasibility and design to construction and closure. BGC's innovative approach includes advanced laboratory testing, data visualization, and the application of machine learning in their analyses, ensuring that they remain at the forefront of subsurface analysis. The firm has built a reputation for delivering responsible solutions to complex earth science challenges, making it a significant player in the industry.

2. Douglas Partners Pty Ltd

• Website: douglaspartners.com.au
• Ownership type: Private
• Headquarters: West Ryde, New South Wales, Australia
• Employee distribution: Australia 100%
• Founded year: 1963
• Headcount: 501-1000
• LinkedIn: douglas-partners-pty-ltd

Douglas Partners Pty Ltd, based in West Ryde, New South Wales, Australia, is a private geotechnical consulting firm established in 1963. With a workforce of approximately 460 employees, the company operates across 19 offices and 14 laboratories throughout Australia. Douglas Partners specializes in a range of services including geotechnical engineering, environmental consulting, groundwater management, rock mechanics, geophysics, and materials testing. Their clientele includes construction companies, developers, and government organizations, all of whom rely on their expertise for accurate assessments and reliable solutions. The firm prides itself on its commitment to safety, sustainability, and continuous improvement, ensuring that they deliver high-quality outcomes for projects that interact with the ground. With a rich history and a strong focus on client satisfaction, Douglas Partners has established itself as a significant player in the geotechnical consulting industry.

3. Geo-Technology Associates, Inc. (GTA)

• Website: gtaeng.com
• Ownership type: Private
• Headquarters: Abingdon, Maryland, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1985
• Headcount: 501-1000
• LinkedIn: geo-technology-associates-inc-gta-

Geo-Technology Associates, Inc. (GTA) is an engineering consulting firm based in Abingdon, Maryland, established in 1985. The company specializes in geotechnical, environmental, and construction consulting services, catering to a wide range of clients, including businesses and government agencies. With a workforce of over 500 engineers, geologists, scientists, and technicians, GTA is equipped to tackle complex engineering challenges. Their services include geotechnical feasibility studies, subsurface exploration, and drilling consulting, which are vital for assessing ground conditions and informing construction practices. Operating through 24 offices across the Mid-Atlantic, Midwest, and Southeast regions, GTA emphasizes a client-focused approach, ensuring that local teams are responsive to market demands. Their commitment to safety and quality further enhances their reputation in the industry.

4. Geotechnology, Inc.

• Website: geotechnology.com
• Ownership type: Corporate
• Headquarters: St. Louis, Missouri, United States (USA)
• Latest funding: July 2021
• Founded year: 1984
• Headcount: 201-500
• LinkedIn: geotechnology-inc-

Geotechnology, Inc. is a professional engineering and environmental services company based in St. Louis, Missouri. Founded in 1984, the firm has built a reputation for its expertise in geophysics, environmental management, and construction materials testing. They cater to construction companies and government agencies, providing essential data and insights that contribute to project success. Their service offerings include geophysical surveying, water resource management, and geotechnical consulting, among others. The company operates with a focus on quality and responsiveness, ensuring that client needs are met effectively. In 2021, Geotechnology, Inc. was acquired by UES, a national geotechnical engineering firm, which positions them for further growth and innovation in the industry. Their commitment to safety and compliance, particularly in hazardous environments, underscores their professionalism and reliability in subsurface analysis.

5. Geosyntec Consultants

• Website: geosyntec.com
• Ownership type: Private Equity
• Headquarters: Boca Raton, Florida, United States (USA)
• Employee distribution: United States (USA) 87%, Canada 7%, Other 6%
• Latest funding: May 2022
• Founded year: 1983
• Headcount: 1001-5000
• LinkedIn: geosyntec-consultants

Geosyntec Consultants is a consulting and engineering firm founded in 1983, headquartered in Boca Raton, Florida. With a workforce of over 2,600 professionals, the company serves both private and public sector clients. Geosyntec focuses on environmental management, civil engineering, and infrastructure development. Their expertise includes contaminated site assessment, water resource management, and compliance with environmental regulations. The firm is particularly noted for its work in contaminated site assessment and cleanup, groundwater assessment and remediation, and risk management related to subsurface conditions. Geosyntec's projects often involve complex challenges that require innovative solutions, particularly in the areas of sustainability and infrastructure safety. They have a strong presence in North America, with a significant portion of their work dedicated to addressing environmental challenges through scientific and engineering technologies.

6. PetroStrat

• Website: petrostrat.com
• Ownership type: Private
• Headquarters: Conwy, Wales, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 88%, United States (USA) 8%, Other 4%
• Founded year: 2001
• Headcount: 51-200
• LinkedIn: petrostrat-ltd

PetroStrat, founded in 2001 and based in Conwy, Wales, is a geological consultancy that specializes in subsurface modeling and energy transition services. The company offers a range of services including quantitative biostratigraphy, reservoir geology, sedimentology, and real-time wellsite services. With a team of over 100 specialists, PetroStrat has built a strong reputation for helping clients in the energy sector mitigate risks and enhance operational efficiency. Their expertise spans across various regions, including North America, Europe, Africa, and the Asia-Pacific, allowing them to support a wide array of projects. PetroStrat also maintains a multiclient library of stratigraphic databases and reservoir studies, which are essential for both conventional exploration and energy transition initiatives. The company is committed to supporting new energy initiatives, including carbon capture and storage, and has positioned itself as a key player in the evolving energy landscape.

7. JK Geotechnics

• Website: jkgeotechnics.com.au
• Ownership type: Private
• Headquarters: Macquarie Park, New South Wales, Australia
• Founded year: 1976
• Headcount: 11-50
• LinkedIn: jk-geotechnics

JK Geotechnics, based in Macquarie Park, New South Wales, is a private consulting firm specializing in geotechnical engineering and environmental services. Founded in 1976, the company has built a solid reputation for providing comprehensive services that include site investigations, hydrogeology, and construction support. They serve a variety of sectors such as residential, transport, commercial, education, health, and government. Their expertise is particularly valuable in navigating the complexities of subsurface conditions, helping clients mitigate risks associated with their projects. With a team of approximately 29 employees, JK Geotechnics has developed an impressive database of subsurface conditions across Sydney and beyond, allowing them to offer informed analyses and recommendations. Their involvement in significant projects, including infrastructure developments and environmental assessments, underscores their active role in the industry.

8. GBG Group (AUS)

• Website: gbg-group.com.au
• Ownership type: Private
• Headquarters: Castle Hill, New South Wales, Australia
• Employee distribution: Australia 65%, United States (USA) 14%, United Kingdom (UK) 14%, Other 7%
• Founded year: 1987
• Headcount: 11-50
• LinkedIn: gbg-australia

GBG Group (AUS), based in Castle Hill, New South Wales, has been operational since 1987. This private company employs between 11 to 50 professionals, focusing on geophysical engineering and advanced subsurface analysis. They provide customized solutions for environmental assessments, geotechnical investigations, and marine surveys, primarily catering to clients in the mining, construction, and environmental sectors. Their work is crucial for clients needing accurate subsurface data for effective project planning and regulatory compliance. GBG Group prides itself on its innovative approach, continuously pushing the boundaries of geophysical methods to enhance the quality and reliability of their investigations. With a significant presence in Australia and additional operations in the USA, UK, and Iran, they have established a noteworthy reputation in the industry.

9. Geo-Logic Associates, Inc.

• Website: geo-logic.com
• Ownership type: Private
• Headquarters: Ontario, California, United States (USA)
• Employee distribution: United States (USA) 74%, Peru 26%
• Founded year: 1991
• Headcount: 201-500
• LinkedIn: geo-logic-associates-inc

Geo-Logic Associates, Inc. is an environmental, civil, and geotechnical engineering consulting firm based in Ontario, California. Founded in 1991, the company has grown to employ over 300 professionals across 28 offices in the United States and abroad. Geo-Logic Associates focuses on addressing complex environmental and engineering challenges for a variety of clients, including municipalities and private organizations. Their extensive service offerings include civil engineering, construction support, environmental monitoring, geotechnical and geoenvironmental services, solid waste management, and mining support. Notably, they conduct subsurface geologic investigations, groundwater modeling, and site characterization, which are critical components of subsurface analysis. The firm also engages in expert litigation services, providing technical expertise in environmental disputes, further highlighting their role in the subsurface analysis sector.

10. Bergab - Berggeologiska undersökningar AB

• Website: bergab.se
• Ownership type: Private
• Headquarters: Solna, Stockholm, Sweden
• Employee distribution: Sweden 100%
• Founded year: 1972
• Headcount: 51-200
• LinkedIn: bergab

Bergab - Berggeologiska undersökningar AB is a private consulting firm based in Solna, Stockholm, Sweden, founded in 1972. With a workforce of approximately 126 employees, the company specializes in geological and environmental services. Their expertise lies in providing technical consulting for infrastructure projects, focusing on critical areas such as rock, soil, water, and environmental assessments. Bergab serves a variety of clients, including construction companies and government agencies, helping them manage geological risks and comply with environmental regulations. The firm has been involved in numerous high-profile projects, including the expansion of the Stockholm subway and various tunneling initiatives, showcasing their capability in subsurface analysis and project management. Their commitment to quality and environmental responsibility is evident in their operational practices, which are guided by a robust quality management system.

11. Certerra Subsurface Imaging (hydroGEOPHYSICS)

• Website: hgiworld.com
• Ownership type: Corporate
• Headquarters: Tucson, Arizona, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: December 2010
• Founded year: 1981
• Headcount: 11-50
• LinkedIn: hydrogeophysics-inc.

Certerra Subsurface Imaging, operating under the name hydroGEOPHYSICS, is a geophysical consulting company based in Tucson, Arizona. Founded in 1981, the firm has built a solid reputation in subsurface investigations and leak detection services. They cater to various sectors, including mining, environmental management, and construction, providing tailored solutions that assess geological conditions and ensure compliance with safety regulations. The company prides itself on its innovative approach, utilizing advanced geophysical methods such as electrical resistivity, seismic methods, and ground penetrating radar to deliver precise results. With a team of experienced professionals, hydroGEOPHYSICS has successfully completed numerous projects worldwide, demonstrating their capability in addressing complex subsurface challenges. Their commitment to safety is evident, as all employees are certified in relevant safety training programs. The firm has not reported any recent funding, indicating a stable operational model focused on delivering value to clients without external financial backing.

12. Geocon

• Website: geoconinc.com
• Ownership type: Private
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: United States (USA) 94%, India 4%, Other 2%
• Founded year: 1971
• Headcount: 201-500
• LinkedIn: geocon

Geocon, Inc. is a private engineering consulting firm based in San Diego, California, established in 1971. The company specializes in geotechnical engineering, environmental services, engineering geology, construction inspection, and instrumentation. With a workforce of approximately 241 employees, Geocon operates multiple offices throughout California, providing comprehensive solutions to both private and public sector clients. Their services include geotechnical investigations, environmental assessments, and construction inspections, all aimed at navigating the complexities of subsurface conditions. Geocon also maintains state-of-the-art materials testing laboratories, ensuring high-quality service delivery. The firm has a strong track record of involvement in significant projects, such as the Safe Credit Union Convention Center and various public works initiatives, demonstrating their capability and commitment to the industry.

13. GEOVision Inc.

• Website: geovision.com
• Ownership type: Private
• Headquarters: Corona, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1995
• Headcount: 11-50
• LinkedIn: geovision-inc-

GEOVision Inc., based in Corona, California, is a private company founded in 1995 that specializes in geophysical services. With a team of 11-50 employees, GEOVision focuses on engineering and environmental investigations, providing consulting services that help clients understand subsurface conditions. Their work involves advanced geophysical measurement and analysis techniques, which are crucial for various projects in the engineering and environmental sectors. GEOVision employs state-of-the-art technology to offer cost-effective solutions for challenges such as subsurface contamination, geological assessments, and infrastructure mapping. Their services include locating underground storage tanks, mapping landfill boundaries, and conducting borehole logging, showcasing their comprehensive approach to subsurface analysis. The company is dedicated to non-invasive methods, which not only reduce costs but also minimize liability in engineering and environmental projects.

14. Southern Geoscience Consultants

• Website: sgc.com.au
• Ownership type: Private
• Headquarters: West Perth, Western Australia, Australia
• Employee distribution: Australia 98%, Canada 2%
• Founded year: 1985
• Headcount: 51-200
• LinkedIn: southern-geoscience-consultants

Southern Geoscience Consultants (SGC), based in West Perth, Australia, has been a prominent player in the geophysical consulting field since its establishment in 1985. The company specializes in providing integrated geophysical solutions primarily for the resource industry, including mineral exploration, groundwater management, and environmental assessments. SGC's team consists of skilled geoscientists with extensive experience in various geophysical methods, such as magnetics, gravity, and seismic surveys. They work closely with clients in the mining and environmental sectors, offering tailored services that range from survey planning and data processing to interpretation and target generation. SGC is also involved in training and workshops, sharing their expertise with industry professionals. Their innovative approach, which includes the application of machine learning to enhance data interpretation, demonstrates their commitment to staying relevant in a rapidly evolving field.

15. Golder

• Website: golder.com
• Ownership type: Corporate
• Headquarters: Atlanta, Georgia, United States (USA)
• Employee distribution: Canada 31%, United States (USA) 17%, Australia 12%, Other 39%
• Latest funding: $1.1B, December 2020
• Founded year: 1960
• Headcount: 5001-10000
• LinkedIn: golder

Golder Associates Inc. is a consulting and engineering firm based in Atlanta, Georgia, with a strong focus on earth, environment, and energy-related services. Founded in 1960, Golder has built a reputation for providing specialized expertise in soil mechanics and ground engineering. The company serves a variety of sectors, addressing complex environmental challenges through consulting, design, and construction services. With a workforce of over 3,600 employees distributed across several countries, including Canada, the United States, and Australia, Golder has a significant global footprint. Their commitment to addressing the needs of businesses and organizations in the subsurface analysis domain is evident in their project portfolio and ongoing operations.

16. GeoPro Consulting Limited

• Website: geoproconsulting.ca
• Ownership type: Private
• Headquarters: Richmond Hill, Ontario, Canada
• Employee distribution: Canada 93%, Philippines 3%, Colombia 3%
• Founded year: 2015
• Headcount: 11-50
• LinkedIn: geopro-consulting-limited

GeoPro Consulting Limited, based in Richmond Hill, Ontario, is an engineering consulting firm that specializes in geotechnical, environmental, and hydrogeological services. Founded in 2015, the company has quickly made a name for itself by providing comprehensive solutions tailored to the needs of clients in land development, government, and commercial sectors. Their service portfolio includes site characterization, subsurface investigations, environmental assessments, and material testing, among others. With a team of dedicated professionals, GeoPro emphasizes collaboration and strong client relationships, ensuring that project requirements are met with precision. The firm has gained considerable expertise in challenging fields, particularly in transportation and infrastructure projects, and has built a reputation for delivering innovative and effective engineering solutions. As an employee-owned firm, GeoPro fosters a culture of teamwork and accountability, which is reflected in their commitment to quality and client satisfaction.

17. Basalto Informes Técnicos, S.L.

• Website: basaltoit.com
• Ownership type: Private
• Headquarters: Murcia, Murcia, Spain
• Employee distribution: Spain 100%
• Founded year: 1996
• Headcount: 1-10
• LinkedIn: basaltoinformestecnicossl

Basalto Informes Técnicos, S.L. is a consulting firm based in Murcia, Spain, founded in 1996. The company specializes in geology, geophysics, and geotechnics, providing a comprehensive range of services that include geological mapping, geotechnical studies, and environmental assessments. Their expertise is particularly valuable to clients in construction, real estate, and public sectors, where understanding subsurface conditions is crucial for project success. Basalto employs advanced techniques and technologies to address subsurface challenges, ensuring that their clients receive accurate and reliable information. The firm has established itself as a significant player in the regional and national markets, thanks to its commitment to continuous improvement and innovation in service delivery. With a small team of highly qualified technicians, Basalto is well-equipped to handle various projects, from residential buildings to large-scale civil engineering works.

18. Terraprobe Inc.

• Website: terraprobe.ca
• Ownership type: Corporate
• Headquarters: Brampton, Ontario, Canada
• Employee distribution: Canada 100%
• Latest funding: March 2021
• Founded year: 1977
• Headcount: 51-200
• LinkedIn: terraprobe-inc.

Terraprobe Inc., headquartered in Brampton, Ontario, has been a significant player in the engineering consulting field since its inception in 1977. The company specializes in geotechnical engineering, environmental assessments, hydrogeology, and construction materials testing. With a workforce of approximately 74 employees, Terraprobe serves a variety of clients, including developers and municipalities, who rely on their expertise for land development projects and adherence to environmental regulations. Their service portfolio includes subsurface investigations, slope stabilization designs, and comprehensive environmental site assessments. The firm has expanded its reach with multiple offices in Ontario, ensuring they can meet client needs efficiently. In 2021, Terraprobe became a wholly owned subsidiary of Englobe, a move that enhances their capabilities and market presence. This affiliation allows them to leverage additional resources and expertise in applied sciences, further solidifying their role in the industry.

19. Englobe

• Website: englobecorp.com
• Ownership type: Corporate
• Headquarters: Montreal, Quebec, Canada
• Employee distribution: Canada 99%
• Latest funding: $475.0M, June 2024
• Founded year: 1961
• Headcount: 1001-5000
• LinkedIn: englobe

Englobe, based in Montreal, Quebec, is a corporate entity founded in 1961. With a workforce of approximately 1,881 employees, the firm specializes in professional engineering and environmental consulting. Their service offerings include civil engineering, environmental site assessments, climate change consulting, and notably, geosciences and geotechnical engineering. Englobe operates across Canada, emphasizing sustainability and community support in their projects. The company has been involved in numerous significant projects, including the management of landslide risks, which highlights their expertise in subsurface analysis. Recently, Englobe secured funding of $475 million in June 2024, indicating strong financial backing for their operations and initiatives.

20. Thurber Engineering Ltd.

• Website: thurber.ca
• Ownership type: Private
• Headquarters: Edmonton, Alberta, Canada
• Employee distribution: Canada 100%
• Founded year: 1957
• Headcount: 501-1000
• LinkedIn: thurbereng

Thurber Engineering Ltd. is a Canadian consulting engineering firm founded in 1957, with a focus on geotechnical, environmental, and construction materials engineering. Headquartered in Edmonton, Alberta, the company operates 15 offices across Canada, employing over 500 professionals. Thurber provides expert services to municipalities and various industries, tackling complex challenges in infrastructure projects. Their areas of expertise include geotechnical engineering, geological engineering, hydrogeology, and environmental assessments, among others. The firm is known for its innovative approaches to soil testing and risk management, particularly in the context of infrastructure development and environmental compliance. Thurber's commitment to quality and safety is evident in their health and safety programs, as well as their active involvement in industry organizations. They have also made strides in community engagement and support for educational initiatives, reflecting their dedication to both professional excellence and social responsibility.

21. ITASCA Minneapolis

• Website: itascacg.com
• Ownership type: Private
• Headquarters: Minneapolis, Minnesota, United States (USA)
• Employee distribution: United States (USA) 89%, China 4%, India 4%, Other 4%
• Founded year: 1981
• Headcount: 11-50
• LinkedIn: itasca-consulting-group-inc-

ITASCA Minneapolis, officially known as Itasca Consulting Group, Inc., is a private consulting and software development firm founded in 1981. Based in Minneapolis, Minnesota, the company specializes in geomechanics and hydrogeology, offering a range of consulting services and advanced software solutions. Their expertise is particularly valuable in sectors such as mining, civil engineering, and energy, where they assist clients in navigating complex challenges and enhancing operational efficiency. ITASCA is recognized for its innovative numerical modeling techniques and data analysis capabilities, which are crucial for effective subsurface analysis. The company has a global footprint, with offices in multiple countries, and maintains strong ties with academic institutions, reflecting its commitment to education and research in the field. Their software products, including tools for geomechanical and hydrogeological simulation, are widely used in the industry, further solidifying their role as a key player in subsurface analysis.

22. GeoEngineers Inc.

• Website: geoengineers.com
• Ownership type: Corporate
• Headquarters: Redmond, Washington, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: March 2021
• Founded year: 1980
• Headcount: 201-500
• LinkedIn: geoengineers

GeoEngineers Inc. is an engineering and environmental consulting firm based in Redmond, Washington, established in 1980. With a workforce of approximately 474 employees, the company specializes in earth sciences and engineering, providing expert services to clients in sectors such as construction and natural resources. GeoEngineers assists businesses and organizations in navigating complex environmental and engineering challenges through a collaborative approach. Their expertise includes geotechnical engineering, environmental remediation, and site investigations, which are essential for effective subsurface analysis. The firm has been involved in numerous significant projects, showcasing their capability to handle intricate engineering tasks and environmental assessments. Their commitment to quality service delivery is evident in their extensive project portfolio, which highlights their role in addressing critical infrastructure and environmental issues across the United States.

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