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Last updated: September 2026
GT

Geotechnical Testing & Inspections

Scottsdale, AZ

Geotechnical Testing & Inspections (GTI) is a geotechnical and environmental engineering and construction materials testing company serving residential, commercial, industrial, municipal, and ADOT engineering needs. Founded in 1995 by Dr. Peter Fleming, P.E., it performs Phase I environmental site assessments, Phase II site characterization studies, and Phase III remediation services.

phase i environmental site assessmentsphase ii site characterization studiesphase iii site remediation servicesnepa servicesgeotechnical subsurface explorationsmaterials testing servicesspecial inspection servicesarcheological and biological studies
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Credentials & Experience

Years of Experience
31+
Certifications
  • Professional Engineer

Coverage Area

United States, Mexico, and internationally; the firm states that its key members have completed studies in Arizona, New Mexico, California, Nevada, Utah, Texas, Colorado, Washington, and Mexico.

Additional Details

State Licensed (PE or PG)
Yes
Years of Experience
31 years
Phase II ESA Capable
Yes
Service Types Offered
Phase I ESAPhase II ESARemediation OversightNEPA Review

Location

7650 E. Redfield Rd., Suite D-7, Scottsdale, AZ 85260

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