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San Juan County, New Mexico
Geotechnical Engineering in San Juan County, NM
Subsurface investigations, laboratory soils testing, and geotechnical reporting to characterize site conditions before design and verify them during construction. San Juan County is covered on a project basis through our Denver, CO regional hub.
- Dispatched from
- Denver, CO regional hub · project-based mobilization
- Lead time
- Set in the proposal, with mobilization planned around your pour and earthwork schedule
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- San Juan County, NM — Albuquerque, Las Cruces, Rio Rancho
- Coverage
- New Mexico statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in New Mexico
- Call us
- (346) 420-5425
Scope
Geotechnical services in San Juan County
- Soil borings and sampling programs sized to the structure and site
- Laboratory index testing: Atterberg limits (ASTM D4318), moisture content (ASTM D2216)
- Moisture-density relationships and bearing evaluation for foundations and pavements
- Expansive-soil characterization for slab and pavement design
- Construction-phase verification: proof rolls, subgrade acceptance, fill placement observation
ASTM D4318ASTM D2216ASTM D698ASTM D1557
Full scope, standards list, and pricing basis: Geotechnical Engineering.
Local conditions
Geotechnical conditions in San Juan County
San Juan County sits in the high desert of northwestern New Mexico, where the geology reflects its position on the Colorado Plateau — a mix of sedimentary formations, alluvial valley fills along the San Juan River corridor, and expansive soils that can shift significantly with moisture changes. For oil-and-gas infrastructure, commercial development, and municipal projects across Farmington, Aztec, and Bloomfield, understanding what lies below grade is not a formality — it directly controls foundation type, earthwork specifications, and long-term structural performance. Our geotechnical engineering services address that need through subsurface investigations, laboratory soils testing, and engineering reports that give designers and contractors defensible data before work begins. Field technicians holding ACI and NICET certifications execute sampling and testing programs, and all laboratory analysis is conducted under a documented quality system. Coverage for San Juan County is dispatched through our Denver regional hub; scheduling is project-based, so early coordination keeps your timeline intact.
High-desert soils in the San Juan River basin frequently include fine-grained sediments and clay-bearing units that exhibit volume change potential when wetted or dried — a condition that warrants careful characterization of plasticity and swell pressure before foundation design. Elevation and arid climate also mean wide seasonal temperature swings and infrequent but intense precipitation events that can influence compaction window planning and moisture-sensitive earthwork schedules.
FAQ · San Juan County
San Juan County has a lot of oil-and-gas-related construction — does geotechnical scope differ for industrial pads and pipeline corridors versus standard commercial work?
Yes. Industrial equipment pads must account for dynamic and vibratory loads that standard presumptive bearing values do not address, and pipeline corridors require soil corrosivity data — resistivity, pH, and chloride content — alongside conventional bearing and settlement analysis. We scope the investigation to the load type, facility class, and any agency-specific requirements applicable to the project.
How should I handle expansive or shrink-swell soils if my borings indicate high plasticity clays on my Farmington-area site?
Soils with high plasticity index values measured per ASTM D4318 and meaningful swell pressure per ASTM D4546 require the geotechnical report to evaluate foundation options — often drilled piers that extend below the active zone, structural slabs designed for uplift, or treated subgrade. IBC Section 1803.5.3 requires identification of expansive soils; our report addresses that requirement and provides design parameters for the engineer of record.
What laboratory tests are typically run on soils sampled during a San Juan County subsurface investigation?
A standard program generally includes grain-size analysis (ASTM D6913 / D7928), Atterberg limits (ASTM D4318), moisture and density (ASTM D2216 / D7263), and unconfined compressive strength (ASTM D2166) for cohesive materials. Swell-consolidation testing (ASTM D4546) is added when plastic fines are encountered. Corrosivity testing is included when below-grade metals or concrete in contact with soil are part of the design.
Which office covers geotechnical in San Juan County, NM?
Field work in San Juan County is dispatched through the Denver, CO regional hub, about 272 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large San Juan County projects.
Are the technicians you send to San Juan County certified?
Field sampling and testing in San Juan County are performed by our ACI- and NICET-certified technicians. Geotechnical engineering and professional services are delivered with professionals licensed in New Mexico, coordinated under one proposal.
Scheduling & proposals
Need geotechnical engineering in San Juan County?
Call to schedule a technician, or send project documents for a written proposal.