Company lists · Data refreshed November 2026
Top 25 Site investigation services based in the United States
RevenueBase identified 625 company matches for site investigation services associated with the United States as of November 2026 and tracks 11,071 professional contacts across them, including 4,384 with verified work emails. Houston is the largest hub.
This list covers company matches for site investigation services 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 November 6, 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 site investigation services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 541 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 338 contacts → | ||||
Exact match “Ninyo & Moore was acquired by SOCOTEC US.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 227 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 200 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 187 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 183 contacts → | ||||
Exact match “United Consulting is a multi-disciplined engineering consulting firm located in Norcross, Georgia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 153 contacts → | ||||
Exact match “Kumar & Associates provides geotechnical engineering, engineering geology, environmental sciences, construction observation and materials testing services for projects in the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 150 contacts → | ||||
Exact match “Geotechnical Consultants, Inc.(GCI) is a professional geo-engineering firm headquartered in greater Columbus, Ohio.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 139 contacts → | ||||
Exact match “Converse was established in 1946 by Professor Frederick J.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 123 contacts → | ||||
Exact match “Established in 1992, Tierra, Inc.(Tierra) is a full-service consulting geotechnical, forensics, environmental, and construction materials testing engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 107 contacts → | ||||
Exact match “It’s rare to find experts in geotechnical engineering, civil engineering, construction materials, metals, aggregates, calibration and analytical chemistry all under the same roof.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 97 contacts → | ||||
Exact match “At Alta Environmental & Infrastructure (Alta EI), we partner with clients to build and protect what matters most, delivering comprehensive engineering, environmental, and health &…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 92 contacts → | ||||
Exact match “Geotex Engineering is an experienced North Texas engineering firm that provides geotechnical and construction materials testing services for education, municipal, water…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 88 contacts → | ||||
Exact match “Group Delta, an NV5 Company, is a geotechnical engineering firm which specializes in geotechnical investigations, forensic investigations, environmental services, material testing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 87 contacts → | ||||
Exact match “Founded in 1984 by current CEO, Chris Stevenson, P.E, Stevenson Consulting, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 83 contacts → | ||||
Exact match “Southern Earth Sciences, Inc.(SES) provides geotechnical engineering, construction materials testing, and environmental services throughout the southeast on industrial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 82 contacts → | ||||
Exact match “ETTL Engineers & Consultants Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 81 contacts → | ||||
Exact match “Terradyne is a leading provider of geotechnical & environmental engineering, construction materials testing and civil site design services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 77 contacts → | ||||
Exact match “Founded in 1972, AGW is a multi-disciplined consulting engineering firm specializing in the geosciences and environmental services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 74 contacts → | ||||
Exact match “Summit is a trusted leader in environmental industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 71 contacts → | ||||
Exact match “Dynamic Earth, LLC provides geotechnical engineering and environmental consulting services ranging from preliminary due diligence phase studies through comprehensive site…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 70 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 67 contacts → | ||||
Exact match “NOVA Services (NOVA) is a State of California Small Business Enterprise (SBE) and Disabled Veteran Business Enterprise (DVBE) as well as a Service-Disabled, Veteran-Owned Small…” Recorded in the RevenueBase company graph · Nov 6, 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 “site investigation services”. 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 625 site investigation services based in the United States
See the full list, filter by size, metro and specialty, and access 4,384 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Site investigation services based in the United States at a glance
As of Nov 6, 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 625 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 “site investigation services” 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 4,384 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 November 6, 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.
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 “site investigation services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many site investigation services are there based in the United States?
RevenueBase identified 625 company matches for site investigation services associated with the United States as of November 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?
Nova Engineering And Environmental, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most site investigation services?
Houston leads with 12 company records, followed by Denver (8) and New York (8).
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 4,384 professional contacts with verified work emails tracked across these 625 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 625 site investigation services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Site investigation services by geography
- Site investigation services based in Sao Paulo, Brazil
- Site investigation services based in London, United Kingdom
- Site investigation services based in Australia
- Site investigation services based in Belgium
- Site investigation services based in Brazil
- Site investigation services based in Canada
- Site investigation services based in France
- Site investigation services based in Germany
- Site investigation services based in India
- Site investigation services based in Italy
- Site investigation services based in the Netherlands
- Site investigation services based in New Zealand
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
- Site investigation services based in Sao Paulo, Brazil
- Site investigation services based in London, United Kingdom
- Site investigation services based in Australia
- Site investigation services based in Belgium
- Site investigation services based in Brazil
- Site investigation services based in Canada
Company intelligence · public preview
Top 25 site investigation services 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 625 matching company records for site investigation services based in the United States, with 11,071 tracked contacts and 4,384 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: November 6, 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 site investigation services 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 |  Nova Engineering And Environmental, LLCusanova.comHQ: Kennesaw, FL, United StatesReported employees: 501-1,000 | Kennesaw, FL, United States | 501-1,000 | Exact match | 541 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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 | 338 contacts → |
“Ninyo & Moore was acquired by SOCOTEC US.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Geotekgeotekusa.comHQ: Las Vegas, CA, United StatesReported employees: 201-500 | Las Vegas, CA, United States | 201-500 | Exact match | 227 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Patriot Engineering And Environmental, INCpatrioteng.comHQ: Indianapolis, KY, United StatesReported employees: 51-200 | Indianapolis, KY, United States | 51-200 | Exact match | 200 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Bunnell-Lammons Engineeringblecorp.comHQ: Greenville, SC, United StatesReported employees: 201-500 | Greenville, SC, United States | 201-500 | Exact match | 187 contacts → |
“Bunnell-Lammons Engineering (BLE) provides engineering and environmental solutions for projects in commercial, industrial, institutional and infrastructure markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  United Consultingunitedconsulting.comHQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 183 contacts → |
“United Consulting is a multi-disciplined engineering consulting firm located in Norcross, Georgia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Kumar And Associates, INCkumarusa.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 153 contacts → |
“Kumar & Associates provides geotechnical engineering, engineering geology, environmental sciences, construction observation and materials testing services for projects in the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Geotechnical Consultants, INCgci2000.comHQ: Westerville, OH, United StatesReported employees: 51-200 | Westerville, OH, United States | 51-200 | Exact match | 150 contacts → |
“Geotechnical Consultants, Inc.(GCI) is a professional geo-engineering firm headquartered in greater Columbus, Ohio.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Converse Consultantsconverseconsultants.comHQ: Monrovia, CA, United StatesReported employees: 51-200 | Monrovia, CA, United States | 51-200 | Exact match | 139 contacts → |
“Converse was established in 1946 by Professor Frederick J.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Tierra, Inc. A Certerra Companytierraeng.comHQ: Temple Terrace, FL, United StatesReported employees: 51-200 | Temple Terrace, FL, United States | 51-200 | Exact match | 123 contacts → |
“Established in 1992, Tierra, Inc.(Tierra) is a full-service consulting geotechnical, forensics, environmental, and construction materials testing engineering firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Bowser-Morner, INCbowser-morner.comHQ: Dayton, OH, United StatesReported employees: 51-200 | Dayton, OH, United States | 51-200 | Exact match | 107 contacts → |
“It’s rare to find experts in geotechnical engineering, civil engineering, construction materials, metals, aggregates, calibration and analytical chemistry all under the same roof.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Alta Environmental And Infrastructurealtaei.comHQ: Tempe, AZ, United StatesReported employees: 201-500 | Tempe, AZ, United States | 201-500 | Exact match | 97 contacts → |
“At Alta Environmental & Infrastructure (Alta EI), we partner with clients to build and protect what matters most, delivering comprehensive engineering, environmental, and health &…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Geotex Engineering, LLCgeotex-engineering.comHQ: Collinsville, TX, United StatesReported employees: 51-200 | Collinsville, TX, United States | 51-200 | Exact match | 92 contacts → |
“Geotex Engineering is an experienced North Texas engineering firm that provides geotechnical and construction materials testing services for education, municipal, water…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Group Delta Consultants, Inc., An Nv5 Companygroupdelta.comHQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 88 contacts → |
“Group Delta, an NV5 Company, is a geotechnical engineering firm which specializes in geotechnical investigations, forensic investigations, environmental services, material testing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Stevenson Consulting, Llc, A UES Companystevensonconsulting.netHQ: Midlothian, NC, United StatesReported employees: 51-200 | Midlothian, NC, United States | 51-200 | Exact match | 87 contacts → |
“Founded in 1984 by current CEO, Chris Stevenson, P.E, Stevenson Consulting, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Southern Earth Sciences, INCsoearth.comHQ: Mobile, LA, United StatesReported employees: 51-200 | Mobile, LA, United States | 51-200 | Exact match | 83 contacts → |
“Southern Earth Sciences, Inc.(SES) provides geotechnical engineering, construction materials testing, and environmental services throughout the southeast on industrial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ettl Engineers And Consultants INCettlinc.comHQ: Tyler, TX, United StatesReported employees: 51-200 | Tyler, TX, United States | 51-200 | Exact match | 82 contacts → |
“ETTL Engineers & Consultants Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Terradyne Geotechnicalterradyne.comHQ: Euless, TX, United StatesReported employees: 51-200 | Euless, TX, United States | 51-200 | Exact match | 81 contacts → |
“Terradyne is a leading provider of geotechnical & environmental engineering, construction materials testing and civil site design services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  A. G. Wassenaar, INCagwco.comHQ: Englewood, CO, United StatesReported employees: 51-200 | Englewood, CO, United States | 51-200 | Exact match | 77 contacts → |
“Founded in 1972, AGW is a multi-disciplined consulting engineering firm specializing in the geosciences and environmental services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Summit Drillingsummitdrilling.comHQ: Bridgewater, NJ, United StatesReported employees: 51-200 | Bridgewater, NJ, United States | 51-200 | Exact match | 74 contacts → |
“Summit is a trusted leader in environmental industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Dynamic Earth LLCdynamic-earth.comHQ: Chester, TX, United StatesReported employees: 51-200 | Chester, TX, United States | 51-200 | Exact match | 71 contacts → |
“Dynamic Earth, LLC provides geotechnical engineering and environmental consulting services ranging from preliminary due diligence phase studies through comprehensive site…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Youngdahl Consulting Group, INCyoungdahl.netHQ: El Dorado Hills, CA, United StatesReported employees: 51-200 | El Dorado Hills, CA, United States | 51-200 | Exact match | 70 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 |  Nova Services Barnett Quality Control Servicesusa-nova.comHQ: San Diego, CA, United StatesReported employees: 51-200 | San Diego, CA, United States | 51-200 | Exact match | 67 contacts → |
“NOVA Services (NOVA) is a State of California Small Business Enterprise (SBE) and Disabled Veteran Business Enterprise (DVBE) as well as a Service-Disabled, Veteran-Owned Small…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 625 company matches
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Site investigation services: dataset insights
November 6, 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
624 records in the displayed employee bands.
1 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 625 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: November 6, 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 ↗
Questions about this company list
What does Exact match mean for site investigation services?
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 site investigation services did RevenueBase find based in the United States?
The saved snapshot records 625 matching company records, 11,071 tracked contacts and 4,384 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: November 6, 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
Site investigation services by geography
- Site investigation services based in Sao Paulo, Brazil
- Site investigation services based in London, United Kingdom
- Site investigation services based in Australia
- Site investigation services based in Belgium
- Site investigation services based in Brazil
- Site investigation services based in Canada
- Site investigation services based in France
- Site investigation services based in Germany
- Site investigation services based in India
- Site investigation services based in Italy
- Site investigation services based in the Netherlands
- Site investigation services based in New Zealand
Cite this list
RevenueBase Data Team. Top 25 site investigation services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/site-investigation-services/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
- Site investigation services based in Sao Paulo, Brazil
- Site investigation services based in London, United Kingdom
- Site investigation services based in Australia
- Site investigation services based in Belgium
- Site investigation services based in Brazil
- Site investigation services based in Canada
Company intelligence · public preview
Top 25 site investigation services based in the United States
RevenueBase records 625 matching company records for site investigation services based in the United States, with 11,071 tracked contacts and 4,384 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: November 6, 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 site investigation services 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 | Nova Engineering And Environmental, LLCusanova.com HQ: Kennesaw, FL, United StatesReported employees: 501-1,000 | Kennesaw, FL, United States | 501-1,000 | Exact match | 541 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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 | 338 contacts → |
“Ninyo & Moore was acquired by SOCOTEC US.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Geotekgeotekusa.com HQ: Las Vegas, CA, United StatesReported employees: 201-500 | Las Vegas, CA, United States | 201-500 | Exact match | 227 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Patriot Engineering And Environmental, INCpatrioteng.com HQ: Indianapolis, KY, United StatesReported employees: 51-200 | Indianapolis, KY, United States | 51-200 | Exact match | 200 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bunnell-Lammons Engineeringblecorp.com HQ: Greenville, SC, United StatesReported employees: 201-500 | Greenville, SC, United States | 201-500 | Exact match | 187 contacts → |
“Bunnell-Lammons Engineering (BLE) provides engineering and environmental solutions for projects in commercial, industrial, institutional and infrastructure markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | United Consultingunitedconsulting.com HQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 183 contacts → |
“United Consulting is a multi-disciplined engineering consulting firm located in Norcross, Georgia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kumar And Associates, INCkumarusa.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 153 contacts → |
“Kumar & Associates provides geotechnical engineering, engineering geology, environmental sciences, construction observation and materials testing services for projects in the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Geotechnical Consultants, INCgci2000.com HQ: Westerville, OH, United StatesReported employees: 51-200 | Westerville, OH, United States | 51-200 | Exact match | 150 contacts → |
“Geotechnical Consultants, Inc.(GCI) is a professional geo-engineering firm headquartered in greater Columbus, Ohio.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Converse Consultantsconverseconsultants.com HQ: Monrovia, CA, United StatesReported employees: 51-200 | Monrovia, CA, United States | 51-200 | Exact match | 139 contacts → |
“Converse was established in 1946 by Professor Frederick J.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Tierra, Inc. A Certerra Companytierraeng.com HQ: Temple Terrace, FL, United StatesReported employees: 51-200 | Temple Terrace, FL, United States | 51-200 | Exact match | 123 contacts → |
“Established in 1992, Tierra, Inc.(Tierra) is a full-service consulting geotechnical, forensics, environmental, and construction materials testing engineering firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Bowser-Morner, INCbowser-morner.com HQ: Dayton, OH, United StatesReported employees: 51-200 | Dayton, OH, United States | 51-200 | Exact match | 107 contacts → |
“It’s rare to find experts in geotechnical engineering, civil engineering, construction materials, metals, aggregates, calibration and analytical chemistry all under the same roof.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Alta Environmental And Infrastructurealtaei.com HQ: Tempe, AZ, United StatesReported employees: 201-500 | Tempe, AZ, United States | 201-500 | Exact match | 97 contacts → |
“At Alta Environmental & Infrastructure (Alta EI), we partner with clients to build and protect what matters most, delivering comprehensive engineering, environmental, and health &…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Geotex Engineering, LLCgeotex-engineering.com HQ: Collinsville, TX, United StatesReported employees: 51-200 | Collinsville, TX, United States | 51-200 | Exact match | 92 contacts → |
“Geotex Engineering is an experienced North Texas engineering firm that provides geotechnical and construction materials testing services for education, municipal, water…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Group Delta Consultants, Inc., An Nv5 Companygroupdelta.com HQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 88 contacts → |
“Group Delta, an NV5 Company, is a geotechnical engineering firm which specializes in geotechnical investigations, forensic investigations, environmental services, material testing…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Stevenson Consulting, Llc, A UES Companystevensonconsulting.net HQ: Midlothian, NC, United StatesReported employees: 51-200 | Midlothian, NC, United States | 51-200 | Exact match | 87 contacts → |
“Founded in 1984 by current CEO, Chris Stevenson, P.E, Stevenson Consulting, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Southern Earth Sciences, INCsoearth.com HQ: Mobile, LA, United StatesReported employees: 51-200 | Mobile, LA, United States | 51-200 | Exact match | 83 contacts → |
“Southern Earth Sciences, Inc.(SES) provides geotechnical engineering, construction materials testing, and environmental services throughout the southeast on industrial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ettl Engineers And Consultants INCettlinc.com HQ: Tyler, TX, United StatesReported employees: 51-200 | Tyler, TX, United States | 51-200 | Exact match | 82 contacts → |
“ETTL Engineers & Consultants Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Terradyne Geotechnicalterradyne.com HQ: Euless, TX, United StatesReported employees: 51-200 | Euless, TX, United States | 51-200 | Exact match | 81 contacts → |
“Terradyne is a leading provider of geotechnical & environmental engineering, construction materials testing and civil site design services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | A. G. Wassenaar, INCagwco.com HQ: Englewood, CO, United StatesReported employees: 51-200 | Englewood, CO, United States | 51-200 | Exact match | 77 contacts → |
“Founded in 1972, AGW is a multi-disciplined consulting engineering firm specializing in the geosciences and environmental services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Summit Drillingsummitdrilling.com HQ: Bridgewater, NJ, United StatesReported employees: 51-200 | Bridgewater, NJ, United States | 51-200 | Exact match | 74 contacts → |
“Summit is a trusted leader in environmental industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Dynamic Earth LLCdynamic-earth.com HQ: Chester, TX, United StatesReported employees: 51-200 | Chester, TX, United States | 51-200 | Exact match | 71 contacts → |
“Dynamic Earth, LLC provides geotechnical engineering and environmental consulting services ranging from preliminary due diligence phase studies through comprehensive site…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Youngdahl Consulting Group, INCyoungdahl.net HQ: El Dorado Hills, CA, United StatesReported employees: 51-200 | El Dorado Hills, CA, United States | 51-200 | Exact match | 70 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Nova Services Barnett Quality Control Servicesusa-nova.com HQ: San Diego, CA, United StatesReported employees: 51-200 | San Diego, CA, United States | 51-200 | Exact match | 67 contacts → |
“NOVA Services (NOVA) is a State of California Small Business Enterprise (SBE) and Disabled Veteran Business Enterprise (DVBE) as well as a Service-Disabled, Veteran-Owned Small…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 625 company matches
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Site investigation services: dataset insights
November 6, 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
624 records in the displayed employee bands.
1 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 625 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: November 6, 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 ↗
Questions about this company list
What does Exact match mean for site investigation services?
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 site investigation services did RevenueBase find based in the United States?
The saved snapshot records 625 matching company records, 11,071 tracked contacts and 4,384 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 site investigation services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/site-investigation-services/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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