(618) 632-9900 (636) 332-1153 marketing@qteinc.com

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Geotechnical Exploration

QTE explores below the surface of your potential site to arm your design professionals with the necessary data to provide you with the Quality foundation you deserve for the lifetime of your project. QTE is flexible enough to work with you to generate as much data as your budget will allow. Our field staff has the experience and certifications to carry your project beyond the design phase, through construction and into the building you ultimately require.

QTE also performs Environmental Testing & Consulting and Construction Materials Testing.

Subsurface Exploration

  • Traditional Drill Rig
  • Rotary Air Drill
  • Test Pits

Laboratory Geotechnical Testing

  • Triaxial Compression
  • Permeability
  • Shear Strength
  • Soil Density
  • Atterberg Limits
  • Unconfined Compression
  • Swell Pressure
  • Consolidation
  • Resistivity
  • Grain Size Distributions
  • Proctor Compaction Tests

Site Development Recommendations

  • Shallow Foundations
  • Auger Cast Piles
  • Drilled Piers
  • Rammed Aggregate Piers
  • Seismic Design Considerations
  • Settlement Potential
  • Shrink/Swell Potential
  • Mine Subsidence Potential
  • Influence of groundwater on the design and construction
  • Suitability of on-site soils for use in structural fill
  • Engineering criteria for placement of structural fill
  • Pavement subgrade recommendations
  • Suggested construction monitoring program for foundation construction

Construction Monitoring

  • Foundation observation
  • Controlled engineering fill density testing
  • Settlement monitoring
  • Soil stabilization recommendation and monitoring

QTE can help you clean up contaminants and bring you into compliance as quickly and cost-effectively as possible.

Corporate Office

803 W State St, O’Fallon, IL 62269
(618) 632-9900
(618) 632-9922



Regional Office
(By appointment only.)

206 S. Linn Ave. Wentzville, MO 63385
(636) 332-1153
(636) 332-5781



Qualtity Testing & Engineering, O'Fallon, IL / St. Louis, MO

Quality Testing & Engineering, with construction testing and engineering offices in O'Fallon, Illinois and Wentzville, Mo, serves the St Louis, Missouri metropolitan area as well as areas of Southern Illinois including O'Fallon, Illinois, Edwardsville, Illinois, Alton Illinois, Belleville, Illinois, Troy, Illinois, Columbia, Illinois, Scott Air Force Base, Illinois and other areas. We provide construction testing, environmental consulting and testing, geotechnical exploration, construction materials testing and other environmental services to the St Louis area, including Wentzville, Missouri, O'Fallon Missouri, St Louis County as well as all areas of Southern Illinois.

Quality Testing and Engineering products range in size from residential homes to Industrial/Refineries, heavy industrial projects such as power plants, refineries and factories. QTE works in commercial, educational, institutional, industrial, recreational, refinery, transportation and warehousing projects.