Business Details
40 Years
experience
Your Trusted Partner for Geotechnical & Environmental Solutions
Founded in 1986, Group Delta has built a reputation as a leader in geotechnical, environmental, and materials testing services. With over 40 years of experience, our team of 100+ experts delivers technically sound solutions for complex infrastructure projects across California. Our accredited laboratories in Anaheim and San Diego support clients in both public and private sectors, specializing in high-impact developments from educational campuses to waterfront infrastructure. We maintain rigorous quality control through certifications from Caltrans, AASHTO, and ASTM, ensuring compliance with industry standards. Our multidisciplinary approach combines geotechnical engineering, environmental remediation, and construction support to optimize project outcomes.With offices in five California locations, we provide localized expertise while maintaining national technical standards. Our commitment to innovation is demonstrated through advanced methodologies like ASTM Greener Cleanup standards and smart remediation practices. We prioritize client collaboration, offering tailored solutions that balance technical excellence with budgetary constraints. Our team includes registered engineers, environmental scientists, and certified technicians who bring decades of regional experience to every project. This combination of technical depth, regulatory knowledge, and operational excellence has made us a trusted partner for California's most challenging infrastructure developments.
Services
Geotechnical Engineering
Environmental Remediation
Materials Testing
Construction Support
Seismic Assessment
Soil Testing
Asbestos Abatement
PFAS Remediation
Structural Evaluation
Stormwater Compliance
Details
- Year established: 1986
Highlights and features
- We maintain Caltrans-certified laboratories in Anaheim and San Diego for accurate materials testing.
- Our team includes 100+ engineers and scientists with specialized expertise in California geology.
- We implement ASTM Greener Cleanup standards for sustainable environmental remediation practices.
- Our engineers hold multiple certifications including ACI concrete, ICC special inspection, and AWS welding.
- We provide comprehensive services from initial site assessment through construction completion.
Associations and certifications
- Caltrans
- AASHTO
- ASTM
- American Concrete Institute
- International Code Council
- American Welding Society
- Cement and Concrete Reference Laboratory
Services
Environmental Remediation
Our environmental remediation services address contaminated sites through comprehensive assessment and tailored cleanup strategies. We specialize in PFAS assessment, hazardous materials management, and ASTM Greener Cleanup standards. Our team delivers cost-effective solutions for soil and groundwater remediation while ensuring regulatory compliance.
Geotechnical Engineering
Geotechnical engineering services include subsurface investigations, foundation design, and seismic hazard evaluations. Our Caltrans-certified labs perform soil testing to ASTM standards. We provide slope stability analysis, liquefaction potential studies, and site grading specifications for construction projects.
Materials Testing
Materials testing services cover soils, concrete, asphalt, and structural steel. Our AASHTO-accredited labs conduct compaction tests, concrete cylinder testing, and weld inspections. We provide quality control for construction projects through field and laboratory analysis.
Seismic Assessment
Seismic assessment services include site-specific hazard evaluations and ASCE 41 structural assessments. Our engineers analyze fault rupture risks, liquefaction potential, and ground motion characteristics. We provide retrofit recommendations for existing structures to meet modern seismic standards.
PFAS Remediation
PFAS remediation services address per- and polyfluoroalkyl substances contamination through specialized assessment and treatment methods. Our team develops site-specific remediation plans using advanced technologies while maintaining regulatory compliance with state and federal guidelines.
Questions
What geographic areas do you serve?
We primarily serve California with offices in Anaheim, Irvine, Riverside, San Diego, and Torrance.
What industries do you specialize in?
We work with transportation, healthcare, education, residential, and water/wastewater infrastructure projects.
Do you have certified laboratory facilities?
Yes, we maintain two AASHTO and Caltrans-certified laboratories in Anaheim and San Diego.
What environmental services do you offer?
Our services include Phase I/II assessments, PFAS remediation, hazardous materials management, and stormwater compliance.
How experienced is your team?
Our 100+ professionals have combined experience of over 40 years in geotechnical and environmental engineering.
What certifications do your staff hold?
Our team holds ACI concrete, ICC special inspection, AWS welding, and multiple environmental certifications.
Videos
