Company lists · Data refreshed October 2026
Top 25 Geotechnical drilling contractors based in the United States
RevenueBase identified 1,339 company matches for geotechnical drilling contractors associated with the United States as of October 2026 and tracks 30,955 professional contacts across them, including 13,063 with verified work emails. Houston is the largest hub.
This list covers company matches for geotechnical drilling contractors associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest geotechnical drilling contractors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,259 contacts → | ||||
Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 2 | 903 contacts → | ||||
Exact match “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 3 | 776 contacts → | ||||
Exact match “Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 4 | 518 contacts → | ||||
Exact match “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 5 | 491 contacts → | ||||
Exact match “ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 6 | 472 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 7 | 449 contacts → | ||||
Exact match “Minova is an industry leader of ground support and geotechnical solutions for mining, tunnelling and surface ground engineering projects.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 8 | 436 contacts → | ||||
Exact match “For over six decades, Malcolm Drilling has set the standard in the deep foundation and ground engineering industry, consistently leading through innovation and expertise.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 9 | 375 contacts → | ||||
Exact match “Ninyo & Moore was acquired by SOCOTEC US.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 10 | 350 contacts → | ||||
Exact match “Nicholson has been both a leader and an innovator in the geotechnical construction industry for more than 70 years.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 11 | 318 contacts → | ||||
Exact match “Established in 1881, Froehling & Robertson, Inc.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 12 | 309 contacts → | ||||
Exact match “Hillis-Carnes Engineering Associates, Inc.(HCEA) is a Mid-Atlantic based, multi-disciplined consulting engineering firm.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 13 | 287 contacts → | ||||
Exact match “ENGEO Incorporated is an award-winning, employee-owned comprehensive provider of more than 400 geotechnical and civil engineers, geologists, GIS experts, environmental scientists…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 14 | 262 contacts → | ||||
Exact match “CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 15 | 223 contacts → | ||||
Exact match “Drill Tech Drilling & Shoring, Inc.(DTDS) is a full service Engineering Contractor founded in 1994 Specializing in tunneling, shafts, deep foundation, ground improvement, and…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 16 | 218 contacts → | ||||
Exact match “Incorporated in 1997, GeoTek is a full service consulting engineering firm specializing in geotechnical engineering, construction materials testing, special inspection, and…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 17 | 213 contacts → | ||||
Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 18 | 199 contacts → | ||||
Exact match “Completing public infrastructure projects comes with tremendous pressure to serve the public while completing each project on-time and on-budget.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 19 | 198 contacts → | ||||
Exact match “Since its beginning in 1995, Patriot has built its reputation on serving the needs of the growing development and redevelopment community.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 20 | 194 contacts → | ||||
Exact match “Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 21 | 193 contacts → | ||||
Exact match “Geocon is a California corporation established in 1971 as a professional engineering consulting firm providing comprehensive geotechnical engineering, geotechnical…” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 22 | 192 contacts → | ||||
Exact match “CTL|Thompson (CTL|T) has been providing innovative engineering solutions throughout Colorado since 1971.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 23 | 185 contacts → | ||||
Exact match “United Consulting is a multi-disciplined engineering consulting firm located in Norcross, Georgia.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 24 | 182 contacts → | ||||
Exact match “Bunnell-Lammons Engineering (BLE) provides engineering and environmental solutions for projects in commercial, industrial, institutional and infrastructure markets.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
| 25 | 168 contacts → | ||||
Exact match “The success of Condon-Johnson & Associates - a family owned construction company - is underpinned by our core values: Dependability.” Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “geotechnical drilling contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 1,339 geotechnical drilling contractors based in the United States
See the full list, filter by size, metro and specialty, and access 13,063 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Geotechnical drilling contractors based in the United States at a glance
As of Oct 13, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,339 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “geotechnical drilling contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 13,063 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 13, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Geotechnical drilling contractors by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “geotechnical drilling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many geotechnical drilling contractors are there based in the United States?
RevenueBase identified 1,339 company matches for geotechnical drilling contractors associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
ECS Group Of Companies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most geotechnical drilling contractors?
Houston leads with 36 company records, followed by Dallas (16) and New York (15).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 13,063 professional contacts with verified work emails tracked across these 1,339 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,339 geotechnical drilling contractors based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Geotechnical drilling contractors by geography
- Geotechnical drilling contractors based in Perth, Australia
- Geotechnical drilling contractors based in Belo Horizonte, Brazil
- Geotechnical drilling contractors based in Rio De Janeiro, Brazil
- Geotechnical drilling contractors based in Sao Paulo, Brazil
- Geotechnical drilling contractors based in Lima, Peru
- Geotechnical drilling contractors based in Ankara, Türkiye
- Geotechnical drilling contractors based in Dubai, United Arab Emirates
- Geotechnical drilling contractors based in London, United Kingdom
- Geotechnical drilling contractors based in Houston, United States
- Geotechnical drilling contractors based in Argentina
- Geotechnical drilling contractors based in Australia
- Geotechnical drilling contractors based in Austria
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Geotechnical drilling contractors based in Perth, Australia
- Geotechnical drilling contractors based in Belo Horizonte, Brazil
- Geotechnical drilling contractors based in Rio De Janeiro, Brazil
- Geotechnical drilling contractors based in Sao Paulo, Brazil
- Geotechnical drilling contractors based in Lima, Peru
- Geotechnical drilling contractors based in Ankara, Türkiye
Company intelligence · public preview
Top 25 geotechnical drilling contractors based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,339 matching company records for geotechnical drilling contractors based in the United States, with 30,955 tracked contacts and 13,063 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geotechnical drilling contractors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  ECS Group Of Companiesecslimited.comHQ: Chantilly, VA, United StatesReported employees: 1,001-5,000 | Chantilly, VA, United States | 1,001-5,000 | Exact match | 2,259 contacts → |
“ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  GZA Geoenvironmental, INCgza.comHQ: Norwood, MA, United StatesReported employees: 501-1,000 | Norwood, MA, United States | 501-1,000 | Exact match | 903 contacts → |
“Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Professional Service Industries, Inc. PSIintertek.comHQ: Arlington Heights, IL, United StatesReported employees: 1,001-5,000 | Arlington Heights, IL, United States | 1,001-5,000 | Exact match | 776 contacts → |
“Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Nova Engineering And Environmental, LLCusanova.comHQ: Kennesaw, GA, United StatesReported employees: 501-1,000 | Kennesaw, GA, United States | 501-1,000 | Exact match | 518 contacts → |
“Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Entact, LLCentact.comHQ: Westmont, IL, United StatesReported employees: 501-1,000 | Westmont, IL, United States | 501-1,000 | Exact match | 491 contacts → |
“ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Bauer Foundation Corpbauerfoundations.comHQ: Odessa, FL, United StatesReported employees: 201-500 | Odessa, FL, United States | 201-500 | Exact match | 472 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 |  Minovaminovaglobal.comHQ: Greenwood Village, CO, United StatesReported employees: 1,001-5,000 | Greenwood Village, CO, United States | 1,001-5,000 | Exact match | 449 contacts → |
“Minova is an industry leader of ground support and geotechnical solutions for mining, tunnelling and surface ground engineering projects.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Malcolm Drillingmalcolmdrilling.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 436 contacts → |
“For over six decades, Malcolm Drilling has set the standard in the deep foundation and ground engineering industry, consistently leading through innovation and expertise.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Ninyo & Moore, A Socotec Companysocotec.usHQ: San Diego, CA, United StatesReported employees: 501-1,000 | San Diego, CA, United States | 501-1,000 | Exact match | 375 contacts → |
“Ninyo & Moore was acquired by SOCOTEC US.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Nicholson Constructionnicholsonconstruction.comHQ: Canonsburg, PA, United StatesReported employees: 201-500 | Canonsburg, PA, United States | 201-500 | Exact match | 350 contacts → |
“Nicholson has been both a leader and an innovator in the geotechnical construction industry for more than 70 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Froehling & Robertson, INCfandr.comHQ: Richmond, VA, United StatesReported employees: 201-500 | Richmond, VA, United States | 201-500 | Exact match | 318 contacts → |
“Established in 1881, Froehling & Robertson, Inc.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Annapolis Junction, MD, United StatesReported employees: 201-500 | Annapolis Junction, MD, United States | 201-500 | Exact match | 309 contacts → |
“Hillis-Carnes Engineering Associates, Inc.(HCEA) is a Mid-Atlantic based, multi-disciplined consulting engineering firm.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  ENGEOengeo.comHQ: San Ramon, CA, United StatesReported employees: 201-500 | San Ramon, CA, United States | 201-500 | Exact match | 287 contacts → |
“ENGEO Incorporated is an award-winning, employee-owned comprehensive provider of more than 400 geotechnical and civil engineers, geologists, GIS experts, environmental scientists…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Cascade Environmental, LLCcascade-env.comHQ: Bothell, WA, United StatesReported employees: 1,001-5,000 | Bothell, WA, United States | 1,001-5,000 | Exact match | 262 contacts → |
“CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Antioch, CA, United StatesReported employees: 201-500 | Antioch, CA, United States | 201-500 | Exact match | 223 contacts → |
“Drill Tech Drilling & Shoring, Inc.(DTDS) is a full service Engineering Contractor founded in 1994 Specializing in tunneling, shafts, deep foundation, ground improvement, and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Geotekgeotekusa.comHQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 218 contacts → |
“Incorporated in 1997, GeoTek is a full service consulting engineering firm specializing in geotechnical engineering, construction materials testing, special inspection, and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  BSK Associatesbskassociates.comHQ: Fresno, CA, United StatesReported employees: 201-500 | Fresno, CA, United States | 201-500 | Exact match | 213 contacts → |
“Employee-Owned.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  HVJ Associateshvj.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 199 contacts → |
“Completing public infrastructure projects comes with tremendous pressure to serve the public while completing each project on-time and on-budget.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Patriot Engineering And Environmental, INCpatrioteng.comHQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 198 contacts → |
“Since its beginning in 1995, Patriot has built its reputation on serving the needs of the growing development and redevelopment community.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Leightonleightongroup.comHQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 194 contacts → |
“Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Geocongeoconinc.comHQ: San Diego, CA, United StatesReported employees: 201-500 | San Diego, CA, United States | 201-500 | Exact match | 193 contacts → |
“Geocon is a California corporation established in 1971 as a professional engineering consulting firm providing comprehensive geotechnical engineering, geotechnical…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  CTL Thompsonctlt.comHQ: Denver, CO, United StatesReported employees: 201-500 | Denver, CO, United States | 201-500 | Exact match | 192 contacts → |
“CTL|Thompson (CTL|T) has been providing innovative engineering solutions throughout Colorado since 1971.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | United Consultingunitedconsulting.com HQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 185 contacts → |
“United Consulting is a multi-disciplined engineering consulting firm located in Norcross, Georgia.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Bunnell-Lammons Engineeringblecorp.comHQ: Greenville, SC, United StatesReported employees: 201-500 | Greenville, SC, United States | 201-500 | Exact match | 182 contacts → |
“Bunnell-Lammons Engineering (BLE) provides engineering and environmental solutions for projects in commercial, industrial, institutional and infrastructure markets.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Condon-Johnson & Associates, INCcondon-johnson.comHQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 168 contacts → |
“The success of Condon-Johnson & Associates - a family owned construction company - is underpinned by our core values: Dependability.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,339 company matches
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Geotechnical drilling contractors: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,339 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,339 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Geotechnical drilling contractors by metro
Questions about this company list
What does Exact match mean for geotechnical drilling contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geotechnical drilling contractors did RevenueBase find based in the United States?
The saved snapshot records 1,339 matching company records, 30,955 tracked contacts and 13,063 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Geotechnical drilling contractors by geography
- Geotechnical drilling contractors based in Perth, Australia
- Geotechnical drilling contractors based in Belo Horizonte, Brazil
- Geotechnical drilling contractors based in Rio De Janeiro, Brazil
- Geotechnical drilling contractors based in Sao Paulo, Brazil
- Geotechnical drilling contractors based in Lima, Peru
- Geotechnical drilling contractors based in Ankara, Türkiye
- Geotechnical drilling contractors based in Dubai, United Arab Emirates
- Geotechnical drilling contractors based in London, United Kingdom
- Geotechnical drilling contractors based in Houston, United States
- Geotechnical drilling contractors based in Argentina
- Geotechnical drilling contractors based in Australia
- Geotechnical drilling contractors based in Austria
Cite this list
RevenueBase Data Team. Top 25 geotechnical drilling contractors based in the United States. Snapshot: October 13, 2026. https://revenuebase.ai/companies/geotechnical-drilling-contractors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Geotechnical drilling contractors based in Perth, Australia
- Geotechnical drilling contractors based in Belo Horizonte, Brazil
- Geotechnical drilling contractors based in Rio De Janeiro, Brazil
- Geotechnical drilling contractors based in Sao Paulo, Brazil
- Geotechnical drilling contractors based in Lima, Peru
- Geotechnical drilling contractors based in Ankara, Türkiye
Company intelligence · public preview
Top 25 geotechnical drilling contractors based in the United States
RevenueBase records 1,339 matching company records for geotechnical drilling contractors based in the United States, with 30,955 tracked contacts and 13,063 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geotechnical drilling contractors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | ECS Group Of Companiesecslimited.com HQ: Chantilly, VA, United StatesReported employees: 1,001-5,000 | Chantilly, VA, United States | 1,001-5,000 | Exact match | 2,259 contacts → |
“ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | GZA Geoenvironmental, INCgza.com HQ: Norwood, MA, United StatesReported employees: 501-1,000 | Norwood, MA, United States | 501-1,000 | Exact match | 903 contacts → |
“Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Professional Service Industries, Inc. PSIintertek.com HQ: Arlington Heights, IL, United StatesReported employees: 1,001-5,000 | Arlington Heights, IL, United States | 1,001-5,000 | Exact match | 776 contacts → |
“Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Nova Engineering And Environmental, LLCusanova.com HQ: Kennesaw, GA, United StatesReported employees: 501-1,000 | Kennesaw, GA, United States | 501-1,000 | Exact match | 518 contacts → |
“Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Entact, LLCentact.com HQ: Westmont, IL, United StatesReported employees: 501-1,000 | Westmont, IL, United States | 501-1,000 | Exact match | 491 contacts → |
“ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Bauer Foundation Corpbauerfoundations.com HQ: Odessa, FL, United StatesReported employees: 201-500 | Odessa, FL, United States | 201-500 | Exact match | 472 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | Minovaminovaglobal.com HQ: Greenwood Village, CO, United StatesReported employees: 1,001-5,000 | Greenwood Village, CO, United States | 1,001-5,000 | Exact match | 449 contacts → |
“Minova is an industry leader of ground support and geotechnical solutions for mining, tunnelling and surface ground engineering projects.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Malcolm Drillingmalcolmdrilling.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 436 contacts → |
“For over six decades, Malcolm Drilling has set the standard in the deep foundation and ground engineering industry, consistently leading through innovation and expertise.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Ninyo & Moore, A Socotec Companysocotec.us HQ: San Diego, CA, United StatesReported employees: 501-1,000 | San Diego, CA, United States | 501-1,000 | Exact match | 375 contacts → |
“Ninyo & Moore was acquired by SOCOTEC US.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Nicholson Constructionnicholsonconstruction.com HQ: Canonsburg, PA, United StatesReported employees: 201-500 | Canonsburg, PA, United States | 201-500 | Exact match | 350 contacts → |
“Nicholson has been both a leader and an innovator in the geotechnical construction industry for more than 70 years.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Froehling & Robertson, INCfandr.com HQ: Richmond, VA, United StatesReported employees: 201-500 | Richmond, VA, United States | 201-500 | Exact match | 318 contacts → |
“Established in 1881, Froehling & Robertson, Inc.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Annapolis Junction, MD, United StatesReported employees: 201-500 | Annapolis Junction, MD, United States | 201-500 | Exact match | 309 contacts → |
“Hillis-Carnes Engineering Associates, Inc.(HCEA) is a Mid-Atlantic based, multi-disciplined consulting engineering firm.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ENGEOengeo.com HQ: San Ramon, CA, United StatesReported employees: 201-500 | San Ramon, CA, United States | 201-500 | Exact match | 287 contacts → |
“ENGEO Incorporated is an award-winning, employee-owned comprehensive provider of more than 400 geotechnical and civil engineers, geologists, GIS experts, environmental scientists…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Cascade Environmental, LLCcascade-env.com HQ: Bothell, WA, United StatesReported employees: 1,001-5,000 | Bothell, WA, United States | 1,001-5,000 | Exact match | 262 contacts → |
“CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Antioch, CA, United StatesReported employees: 201-500 | Antioch, CA, United States | 201-500 | Exact match | 223 contacts → |
“Drill Tech Drilling & Shoring, Inc.(DTDS) is a full service Engineering Contractor founded in 1994 Specializing in tunneling, shafts, deep foundation, ground improvement, and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Geotekgeotekusa.com HQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 218 contacts → |
“Incorporated in 1997, GeoTek is a full service consulting engineering firm specializing in geotechnical engineering, construction materials testing, special inspection, and…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | BSK Associatesbskassociates.com HQ: Fresno, CA, United StatesReported employees: 201-500 | Fresno, CA, United States | 201-500 | Exact match | 213 contacts → |
“Employee-Owned.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HVJ Associateshvj.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 199 contacts → |
“Completing public infrastructure projects comes with tremendous pressure to serve the public while completing each project on-time and on-budget.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Patriot Engineering And Environmental, INCpatrioteng.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 198 contacts → |
“Since its beginning in 1995, Patriot has built its reputation on serving the needs of the growing development and redevelopment community.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Leightonleightongroup.com HQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 194 contacts → |
“Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Geocongeoconinc.com HQ: San Diego, CA, United StatesReported employees: 201-500 | San Diego, CA, United States | 201-500 | Exact match | 193 contacts → |
“Geocon is a California corporation established in 1971 as a professional engineering consulting firm providing comprehensive geotechnical engineering, geotechnical…” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | CTL Thompsonctlt.com HQ: Denver, CO, United StatesReported employees: 201-500 | Denver, CO, United States | 201-500 | Exact match | 192 contacts → |
“CTL|Thompson (CTL|T) has been providing innovative engineering solutions throughout Colorado since 1971.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | United Consultingunitedconsulting.com HQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 185 contacts → |
“United Consulting is a multi-disciplined engineering consulting firm located in Norcross, Georgia.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Bunnell-Lammons Engineeringblecorp.com HQ: Greenville, SC, United StatesReported employees: 201-500 | Greenville, SC, United States | 201-500 | Exact match | 182 contacts → |
“Bunnell-Lammons Engineering (BLE) provides engineering and environmental solutions for projects in commercial, industrial, institutional and infrastructure markets.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Condon-Johnson & Associates, INCcondon-johnson.com HQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 168 contacts → |
“The success of Condon-Johnson & Associates - a family owned construction company - is underpinned by our core values: Dependability.” Recorded description excerpt · October 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Geotechnical drilling contractors: dataset insights
October 13, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,339 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,339 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Geotechnical drilling contractors by metro
Questions about this company list
What does Exact match mean for geotechnical drilling contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geotechnical drilling contractors did RevenueBase find based in the United States?
The saved snapshot records 1,339 matching company records, 30,955 tracked contacts and 13,063 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 geotechnical drilling contractors based in the United States. Snapshot: October 13, 2026. https://revenuebase.ai/companies/geotechnical-drilling-contractors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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