Service · Geotechnical
Soil Testing & Geotechnical Field Services
Earthwork that holds — backed by AASHTO-accredited soil testing, certified field density technicians, and reports your design team can stamp.
Overview
Whether you're capping a heap leach pad, building a multi-million cubic yard embankment, or compacting structural fill under a tilt-up, the foundation of every successful project starts with soil that meets spec. Our geotechnical team has been running density, moisture, gradation, and Atterberg limits across the Intermountain West for over thirty years.
Capabilities
In-Place Density
Nuclear gauge density / moisture testing per ASTM D6938 with same-day field reports.
Proctor Compaction
Standard and Modified Proctor curves (ASTM D698 / D1557) for every native and import source.
Sieve & Hydrometer
Gradation analysis (ASTM C136 / D7928) including hydrometer for fine-grained materials.
Atterberg Limits
Liquid limit, plastic limit, and plasticity index (ASTM D4318) for classification & design.
Earthwork Observation
Cut, fill, subgrade, and backfill observation by certified technicians on-site at the right time.
CBR & R-Value
California Bearing Ratio and R-Value testing for pavement design and subgrade verification.
When to use
You should call us when…
- Embankment, dam, and reservoir earthwork
- Structural fill under buildings, slabs, and tilt-ups
- Highway and roadway subgrade compaction
- MSE walls and retained backfill
- Pad-ready certification for developers
- Trench backfill for utilities and pipelines
Deliverables
What you receive
- Same-day field density reports
- Sealed laboratory reports with chain-of-custody
- Proctor curves and source-specific compaction targets
- Daily field reports with photos and station-by-station logs
- Pad-ready letters and final geotechnical sign-off
FAQ
Common questions
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Start your project.
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Special Inspections
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QC / QA Programs
Tailored quality control / assurance programs end-to-end.
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