Geotechnical Testing & Inspections

What Geotechnical Testing & Inspections does

Geotechnical Testing & Inspections (GTI) is a privately held, Arizona-based engineering consulting firm founded in 1995 by Dr. Peter Fleming, P.E., that delivers integrated geotechnical, environmental, and construction materials testing services across the residential, commercial, industrial, and municipal/end-customer segments. Its service portfolio spans subsurface exploration, foundation analysis and design, seismic refraction and other geophysical studies, Phase I/II/III Environmental Site Assessments, NEPA compliance, asbestos/radon/mold surveys, and QA/QC materials testing for soil, concrete, masonry, asphalt, and structural steel. GTI supplements its core professional services with FAA-licensed drone-based aerial site documentation and mobile laboratory capabilities, operating from a Scottsdale, Arizona headquarters and a full-service laboratory in Tucson, with active project delivery across more than nine U.S. states, 26-state professional engineering registrations, and select international work in Mexico.

The business runs on a project-based, quote-driven professional services model in which proposals are issued within 24 hours of inquiry, work is delivered directly by registered PEs, geologists, scientists, and certified field technicians, and pricing is determined per project scope rather than via fixed SaaS or subscription tiers. GTI's go-to-market combines a sales-led proposal pipeline with inside-sales phone/email channels and online self-service scheduling; the firm also leverages WBENC women-owned business certification, ADOT Disadvantaged Small Business status, and AMRL/CCRL/AASHTO/ADOT laboratory accreditations to access government-funded transportation and infrastructure contracts. The leadership team includes Jennifer M. Jones, M.S. (CEO/Owner), Dr. Peter Fleming, P.E. (President/Founder), Pamela Martin (COO), and Richard Martin (Materials Department Manager), supported by additional PE staff and dedicated field/lab management. Under CEO Jones, GTI has reported more than 35% cumulative growth over the past five years and retains numerous long-tenured client relationships, including a 15+ year engagement with Lawrence and Geyser Development.

Name

Geotechnical Testing & Inspections

Legal name

Geotechnical Testing & Inspections LLC

Website

https://gtiaz.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

251–500 employees

Short description

Geotechnical Testing & Inspections is a Scottsdale, Arizona-based engineering consulting firm providing geotechnical, environmental, and construction materials testing services to residential, commercial, industrial, municipal, and government clients across 26 states and into Mexico.

Ownership category

akta.pro rank

Headquarters

HQ city

Scottsdale

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Geotechnical Engineering Services: Project-based professional services for geotechnical subsurface explorations, foundation analysis and design, seismic studies, and engineering geology. Provided on a per-project basis with proposals generated upon request.
2. Environmental Engineering Services: Phase I Environmental Site Assessments, Phase II Site Characterization Studies, and Phase III Site Remediation Services. Includes NEPA compliance, asbestos surveys, radon surveys, and mold inspection services.
3. Materials Testing Services: Construction materials testing and special inspection services including field testing, laboratory services, and special inspection services for QA/QC of soil, concrete, masonry, and asphalt.
4. Drone Video Services:

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

GTI is a consulting firm that performs geotechnical, environmental, and construction materials testing engineering services. The company delivers subsurface explorations, foundation analysis and design, Phase I/II/III Environmental Site Assessments, NEPA compliance, QA/QC materials testing, and special inspection services for soil, concrete, masonry, asphalt, structural steel, welding, and fireproofing. Services are delivered by registered professional engineers, geologists, scientists, and technicians on a project-by-project basis across the United States and Mexico.

Product overview

GTI provides an integrated suite of geotechnical engineering, environmental engineering, and construction materials testing services for residential, commercial, industrial, and municipal projects. The core offerings include Geotechnical Services (subsurface explorations, foundation analysis, seismic refraction, geophysical studies), Environmental Services (Phase I/II/III assessments, NEPA compliance, remediation), and Materials Testing Services (field and laboratory testing, special inspections). Drone Video Services serve as an aerial observation module complementing all three core service lines for site assessment and documentation purposes.

Differentiator

Problem solved

Functional benefit

Products and services

• Geotechnical Services
• Environmental Services
• Materials Testing Services
• Drone Video Services

Quantifiable outcome

• 35% growth over past 5 years under current CEO leadership
• +2 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• Arizona Technical Testing Institute (ATTI)coreOthersATTI certification body for field technician certification in soils, aggregate, asphalt, and field/nuclear ground density testing. Field technicians certified through ATTI for materials testing operations.
• American Concrete Institute (ACI)coreOthersACI certification for concrete field testing technicians and concrete strength testing technicians. GTI staff certified by ACI for concrete testing services.
• AASHTO Materials Reference Laboratory (AMRL)coreOthersAMRL provides proficiency testing and laboratory accreditation. GTI maintains AMRL certification and has one of the highest AMRL ratings in Arizona.
• Cement and Concrete Reference Laboratory (CCRL)coreOthersCCRL provides laboratory inspection and proficiency testing for concrete and cement. GTI maintains CCRL certification for laboratory services.
• Post-Tensioning Institute (PTI)coreOthersPTI is the standards body for post-tensioning. GTI has certified personnel on PTI's Slab-on-Ground Committee. President Dr. Fleming published in PTI journal.
• American Society of Civil Engineers (ASCE)coreOthersASCE is the leading professional organization for civil engineers. President Dr. Fleming serves as Co-Chairman for ASCE Standards Committee.
• Arizona Department of Transportation (ADOT)coreOthersADOT provides disadvantaged business certification and project work for transportation infrastructure. GTI holds ADOT Disadvantaged Small Business status and provides all ADOT testing services.
• City of PhoenixminorOthersCity of Phoenix provides field technician and laboratory certifications for soils, concrete, and asphalt testing within the Phoenix metropolitan area.
• Arizona Department of Health ServicescoreOthersArizona state health department that accredits chemical laboratories. GTI utilizes ADHS-accredited laboratory for all chemical analysis in environmental testing.
• Mold Training Institute (MTI)minorOthersPresident Dr. Fleming is president of MTI, which conducts mold training nationally. Affiliated training and certification organization.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Terracon Consultants: Largest U.S. employee-owned geotechnical, environmental, construction materials, and facilities consulting firm with hundreds of offices. Directly comparable to GTI across all three service lines (geotechnical, environmental, materials testing) but with vastly greater scale and national footprint.
• NV5 Global: Public infrastructure, environmental, and geospatial services firm with significant geotechnical, environmental, and materials testing offerings. Competes with GTI for infrastructure, transportation, and environmental assessment work, particularly on federally funded projects.
• Kleinfelder: National engineering, environmental, and construction services firm offering geotechnical, materials testing, and environmental consulting. Competes with GTI on the same core service lines and serves overlapping end markets including transportation and municipal infrastructure.
• Gannett Fleming: Engineering and infrastructure consulting firm with geotechnical, environmental, and construction services divisions that compete with GTI on transportation, municipal, and development projects.
• Tetra Tech: Global consulting and engineering firm with large environmental, water, and infrastructure practices that overlap with GTI's environmental site assessment, NEPA compliance, and geotechnical service lines.

Direct peers

• GeoEngineers: Geotechnical and environmental consulting firm serving transportation, water resources, and development markets with subsurface exploration and materials testing services closely aligned to GTI's offerings.
• Haley & Aldrich: Geotechnical, environmental, and infrastructure consulting firm of similar size and service scope to GTI, with comparable focus on subsurface exploration, foundation engineering, and environmental site assessment.
• Braun Intertec: Employee-owned geotechnical engineering, environmental consulting, and materials testing firm with similar multi-state Midwest/South operations. Closely comparable business model, service mix, and client base to GTI.
• UES (Universal Engineering Sciences): National geotechnical engineering, environmental, and materials testing firm with similar full-service model and concentration in Sun Belt/Mountain West geographies overlapping with GTI's Arizona/Southwest core.

Regional players

• Speedie & Associates: Arizona-based geotechnical, environmental, and materials testing firm directly competing with GTI in the Phoenix metro and broader Arizona market, with similar service offerings and certifications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Geotechnical Testing & Inspections