Business Details
40 Years
experience
Trusted Geotechnical Engineering in California
Incorporated in California in April 1986, Group Delta has provided geotechnical and environmental engineering, instrumentation, materials testing and inspection, and construction support services for over 30 years. Our team of 100 civil and geotechnical engineers, environmental engineers and scientists, geologists, laboratory and field technicians, deputy grading and construction inspectors, CAD designers, and support staff serves clients across public and private sectors. With offices in Irvine, Torrance, Anaheim, San Diego, and Ontario, we specialize in diverse projects ranging from airports to educational institutions, prioritizing quality through rigorous QA/QC processes. Our expertise spans seismic hazard evaluations, hazardous materials management, and sustainable remediation design. Our laboratories in San Diego and Anaheim hold certifications from Caltrans, AASHTO, and the Division of the State Architect.We emphasize timely project delivery, budget adherence, and client-focused solutions, supported by decades of local experience and strategic relationships with regulatory agencies. Our services include site investigations, structural assessments, and construction compliance, tailored to minimize liabilities and environmental expenditures. Group Delta maintains accreditation through the AASHTO Accreditation Program and participates in proficiency testing initiatives with CCRL. We integrate technical excellence with innovative approaches to save clients time and resources. Our teams extensive certifications include ACI, ICC, and AWS standards for materials testing and inspection. We serve major infrastructure projects including transportation systems, healthcare facilities, and educational campuses.
Services
Geotechnical Engineering
Environmental Services
Existing Structure Assessments
Instrumentation
Laboratory Services
Details
- Year established: 1986
Highlights and features
- We have over 30 years of experience in geotechnical and environmental engineering.
- We maintain accredited laboratories in San Diego and Anaheim with Caltrans certification.
- Our team consists of 100+ certified engineers and scientists with local expertise.
- We serve diverse sectors including transportation, healthcare, and education.
- We ensure quality through rigorous QA/QC programs and peer-reviewed reporting.
Associations and certifications
- Caltrans
- AASHTO
- Division of the State Architect (DSA)
- City of Los Angeles
Services
Geotechnical Engineering
We conduct subsurface investigations, foundation design, and slope stability analyses for construction projects. Our team performs in-house soil testing certified by Caltrans and AASHTO standards. Services include seismic hazard studies, dewatering design, and settlement monitoring for infrastructure and buildings.
Environmental Services
We manage environmental site assessments, hazardous materials abatement, and sustainable remediation programs. Our specialists perform PFAS assessment, groundwater monitoring, and regulatory compliance support. Solutions comply with ASTM Greener Cleanup standards and include liability reduction strategies.
Existing Structure Assessments
Our team evaluates structural integrity through geotechnical investigations and material testing. We provide seismic retrofit evaluations, forensic distress analysis, and hazardous materials inspections for renovations or litigation cases involving aging infrastructure.
Instrumentation
We install and maintain geotechnical instruments for excavation and tunneling projects. Capabilities include inclinometer readings, piezometer monitoring, and automated data acquisition systems. Real-time data supports safety and construction adjustments.
Laboratory Services
Our accredited labs in Anaheim and San Diego perform concrete, asphalt, steel, and soil testing. We meet ACI, Caltrans, and DSA standards for strength, compaction, and corrosion analysis. Certified technicians support construction quality assurance programs.
Questions
What geotechnical services does Group Delta offer?
We provide site investigations, foundation design, seismic hazard studies, and soils laboratory testing certified by Caltrans and AASHTO standards.
Do you handle hazardous materials assessments?
Yes, we perform environmental site assessments, hazardous materials abatement design, and PFAS contamination remediation across California.
Are your laboratories accredited?
Our San Diego and Anaheim labs hold accreditations from Caltrans, AASHTO, and the Division of the State Architect.
What construction sectors do you support?
We serve transportation, healthcare, education, and municipal infrastructure projects with materials testing and inspection services.
Can you assess existing structures?
We evaluate structural integrity through geotechnical investigations, material testing, and seismic retrofit recommendations for aging buildings and infrastructure.
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Reviews (1)
Richard P.
Sep 13, 2021
Report
A bit displeased with the lack of communication. We will see if things get any better but as for now hopes are low.
