Engineering a Stable Future

The ground beneath our feet. The little corner of the planet upon which we stake our claim and put our roots down. The foundation upon which we build our dreams and settle in to the structures that support our family and communities.

For 4.5 billion years persistent and prevailing forces have been acting upon our Earth, shaping, changing and impacting the sites upon which humans impose their vision. At NGA it is our passion to understand the complex and minutia details of your unique site and to engineer the systems that will ensure the long term stability of your structures.

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Our Services

Using the principles of soil & rock mechanics, we at NGA investigate subsurface conditions and materials, determine their innate properties, and evaluate the stability of natural slopes and man-made soil deposits.

We then assess risks posed by site conditions and design creative, out-of-the-box earthworks and structure foundations and monitor site conditions, earthworks, and foundation construction.

Development

Support for clients looking to develop, renovate or decommission property

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Environmental

Assessments to minimize or avoid adverse environmental effects or full hazardous site remediation assistance

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Coastal & Marine

Infrastructure designed to maintain and protect our coastal habitats

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Expert Witness Services

Litigation services in the field of Geotechnical Engineering

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Infrastructure

Designing the systems that keep us connected

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Landslides & slope stability

Assessing the static and dynamic stability of natural and man-made slopes as well as the engineering of mitigation measures

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testimonials

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“I cannot emphasize enough their professionalism, attentiveness, and rapid response to their clients. Whenever geotechnical engineering is needed on a project, NGA is always my first call.”

Fred Owyen
Lakewood School District

“NGA always looks out for the client’s needs, providing cost-effective solutions and services.”

Erik Davido, PE
Davido Consulting Group, Inc.

“Nelson Geotechnical continues to be an integral part of the team developing a seamless methodology over the years producing projects that are predictively effective and satisfying. Such a pleasant and responsive staff with valuable practical reasoning and a strong problem solving ethic, they are always a pleasure to work with.”

Andrew Kovach AIA
Kovach Architects

“Nelson has become a go-to recommendation to our clients for their geotechnical needs, often-times developing into a repeat and long-term relationship based on their experience and service provided.”

Tim Gabelein, PE
Davido Consulting Group, Inc.

“Our firm has worked with NGA on dozens of foundation and slope repair projects over the past two decades. We’ve found them to be responsive, professional and knowledgeable about the issues concerning soil composition, infiltration testing and other geotechnical engineering needs. We often recommend NGA to our clients as a trusted resource for Geotechnical engineering. They are also just really great people to work with!”