Proven Expertise. Powerful Results.

With nearly 40 years of experience, Group Delta, an NV5 Company, delivers geotechnical, environmental, and materials testing services for California’s most complex, high-impact projects. From waterfront infrastructure to educational campuses, our 100+ experts and accredited labs in Anaheim and San Diego ensure every solution is technically sound, cost-effective, and built to perform.

Project Highlights of the Month

The Big Chico Creek Iron Canyon Fish Passage Project is a multi-agency restoration effort to remove an obsolete 1950s fish ladder and reconfigure boulders in Iron Canyon to create a natural step-pool fishway.

Rady Children's Hospital Main Campus Master Plan improvement project. In this photograph shows the construction of the upper level of the ICU Tower basement excavation with the temporary shoring system in place.

This project involves the development of a 426,852-square-foot Fixed Base Operator (FBO) facility and associated hangars at John Wayne Airport.

SERVICES

We have a history of providing exceptional services for nearly 40 years. Find out more about each service type and how we can help you reach your project goals.

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CAREERS

Learn more about our unique company culture and discover available opportunities!

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LOCATIONS

We are excited to have offices in five locations across the state of California.

OUR STORY, OUR VALUES

Incorporated in California in April 1986, Group Delta, an NV5 Company, has provided geotechnical and environmental engineering, instrumentation, materials testing and inspection, and construction support services for nearly 40 years.

Our firm is staffed by 100 civil and geotechnical engineers, environmental engineers and scientists, geologists, laboratory and field technicians, deputy grading and construction inspectors, CAD designers, and support staff. We maintain offices in the cities of Irvine, Torrance, Anaheim, San Diego, and Riverside as well as accredited laboratories in San Diego and Anaheim.

Our firm has served clients in both the public and private sectors throughout its history and has developed expertise in various types of projects.

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