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Business Details
50+ Years
experience
Trusted Geotechnical Services in Carol Stream
Testing Service has been a trusted leader in geotechnical engineering, environmental consulting, and construction materials testing since 1954. Our commitment to service excellence is driven by a team of experienced engineers, geologists, and technicians who prioritize client satisfaction through accurate assessments and innovative solutions. With 71 years of industry expertise, we offer subsurface exploration, soil and material testing, and environmental risk assessments tailored to commercial, industrial, and public infrastructure projects.

Our state-of-the-art digital reporting system ensures timely, transparent communication, while our fleet of all-terrain drilling equipment enables access to challenging sites. Backed by IDOT certification and adherence to AASHTO and ASTM standards, we deliver reliable, cost-effective services across Illinois, Indiana, and Wisconsin.
Services
Geotechnical Engineering Environmental Consulting Contract Drilling Construction Materials Testing Soil Testing
Details
  • Year established: 1954
Highlights and features
  • 71 years of experience in geotechnical and environmental services
  • Experienced engineers and staff with advanced degrees and certifications
  • State-of-the-art digital reporting system for real-time project updates
  • IDOT certified with adherence to AASHTO and ASTM standards
  • All-terrain drilling capabilities for remote and challenging sites
Associations and certifications
  • IDOT
  • AASHTO R 18
  • ASTM E329
Services
Geotechnical Engineering
Our geotechnical engineering services include subsurface exploration, soil borings, and foundation analysis to assess site conditions. We provide slope stability evaluations, seismic testing, and engineering recommendations for deep foundations and earth retention systems. Utilizing advanced drilling techniques, we ensure accurate data for infrastructure, commercial, and residential projects.
Environmental Consulting
We conduct Phase 1 and Phase 2 environmental site assessments to identify contamination risks. Our services include asbestos surveys, groundwater sampling, and remediation planning. With expertise in regulatory compliance, we assist clients with underground storage tank closures and voluntary cleanup programs for industrial and commercial properties.
Contract Drilling
Our contract drilling division offers all-terrain capabilities for soil sampling, rock coring, and monitoring well installation. Using specialized rigs, we access remote locations like wetlands and parking lots. Services include gas probe installation, leachate piezometer setup, and cathodic protection systems for diverse construction and environmental projects.
Construction Materials Testing
We perform on-site and lab testing for concrete, asphalt, steel, and soil integrity. Services include nuclear density tests, concrete compressive strength analysis, and welding inspections. Our IDOT-certified technicians ensure compliance with ASTM standards, supporting quality control for highways, buildings, and infrastructure.
Soil Testing
Our soil testing services evaluate composition, corrosivity, and load-bearing capacity. Using borings and lab analysis, we identify hazards and recommend foundation solutions. Results guide construction decisions for residential, commercial, and industrial developments, ensuring structural safety and regulatory compliance.
Questions
What geotechnical services do you offer?
We provide soil borings, foundation analysis, slope stability assessments, and seismic testing for commercial, residential, and infrastructure projects.
Are you certified for environmental assessments?
Yes, we conduct Phase 1 and Phase 2 environmental site assessments to identify contamination and recommend remediation solutions.
Do you handle large-scale construction projects?
Yes, we support large projects with materials testing, drilling, and real-time reporting for highways, buildings, and energy facilities.
What areas do you serve?
We operate across Illinois, Indiana, and Wisconsin, with offices in Carol Stream, DeKalb, Gurnee, Rockford, and Shorewood.
How do you deliver project reports?
Our TSC Document System provides digital daily field reports and historical data access via email alerts and secure online portals.
Can you assist with emergency drilling needs?
While we don't offer 24/7 emergency services, our all-terrain rigs and rapid turnaround support urgent project requirements during standard business hours.