INQUIRIES: +1 (714) 668-5600

Talk to a g3 expert (714)668.5600

Engineering Geology and Seismic Engineering Services


Avoid Natural Ground Hazards and capital loss through our Geological Risk Assessments



Engineering geology essentially refers to the application of engineering principles and methodologies to solving and addressing considerations of a geologic nature. Some areas of focus are structural geology, the nature and behavior of rock and soil materials as they occur in natural ground, and the relationship that those rocks and geologic materials may have on development and human processes.


SSeismology is the study of the behavior of earthquakes and the transmission of energy waves through the ground as a result of those earthquakes. In particular, it’s looking at the nature of high ground acceleration that’s developed by offsets on faults. Seismology looks at the transmission of that energy through surrounding rocks, soil, and fill materials and essentially what happens to anything that is built over those materials. It goes hand in hand with engineering geology in the evaluation of seismological type geological hazards that are present in the environment. These can include land sliding, flash floods, mudflows, debris flows, quick ground, soft ground, adverse seepage, and a whole variety of different issues that can be difficult to address.


With regard to seismology, there are two major factors we look at. First, we interpret the development of seismic response spectra for particular sites. This allows us to estimate the risks of seismic effects on development and to interpret after the fact what occurred during an earthquake. Second, we examine the generation of a variety of different seismologic hazards such as ground cracking, liquefaction, and other related changes to the earth.


Planning/Design/Feasibility


Due Diligence and Feasibility

As part of our geoscience consulting services, we assess the necessary steps for a comprehensive study of the soil and its characteristics, noting any elements that may be relevant to the need brought forth and applying a scientific approach to the desk work of analysis and planning to be performed.


We are able to bring solutions that address any challenge put forward and cover all factors both in the present and the future. As such, we draw up plans and back up our work with a detailed analysis and report of our finding and estimations, facilitating a clear perspective on the soil and rock behavior, materials necessary, geological hazards and ground response to developments.

Design Studies

Within our geoscience support services, we take a look at any existing plans or designs that relate to geological factors and/or development and apply the same methodology to expand its understanding and test our hypothesis so as to confirm or disprove the feasibility of any existing geological estimations or designs made by other agents, including geoscience companies.

Risk & Mitigation Assessment

Our expertise allows us to apply a wide base of knowledge to the tackling of any potential geological hazards that relate to rock and soil behaviors and its response to human development and/or stretch of time. This includes an examination of seismological factors that might bring forth any influence on developments, as well as after-the-fact interpretations of events, transpired after an earthquake from a geological standpoint.


Includes:


Soil and Rock Mechanics - Structural geologic evaluation, rock fabric, and its characterization

Soil and rock mechanics are pertinent to how applied physics apply to soils and their different behaviors. They give a practical basis to determine how solid and fluid materials interact in the subsurface, whether they are naturally occurring or man-made. This is especially relevant for foundation supports and the building of buried structures.

Mineral resource evaluations

The performing of mineral resource evaluations allows for an analysis of the levels of geological material deposited in the subsurface, namely, mineral blocks. Depending on the type of situation presented, different types of analysis and estimations are made to give a clearer view of the number of resources resting in a specific geological location. Including soil composition analysis, these estimations are done with the utmost adherence to scientific approaches that allow for a precise understanding of what lays in the area to be studied.

Seismic hazard assessment /Tectonics/Landslide and unstable ground evaluation

We provide geoscience support services and solutions to draw up seismic hazard analysis under data examination and field testing. A seismic hazard study encapsulates a methodology where tectonic conditions are evaluated to gauge the type and history of earthquakes that occur in a site, as well as any other geological faults or features, then drawing accurate predictions on the motion of grounds around the area with grading regarding distances from the epicenter. Finally, soil features are evaluated to see how they would respond to the movement, giving a clear picture of the hazard level in question.

Stratigraphy and sedimentation

Stratigraphy works as a scientific resource that allows us to find the layered history of rock and sedimentation formations to determine the history and composition of an area. When performing soil and rock studies, stratigraphy studies help determine the composition and history of underground rock formations as well as their makeup of materials.

Foundation embedment

Foundation embedment refers to the anchoring of a structure within an underground concrete foundation. These structures which support a foundation can be built as a reinforced underground wall or blog, and, depending on the structure itself, is made to a specific weight.


We provide the necessary solutions to study and determine the most optimal conditions and parameters to determine how a foundation embedment process should proceed, as well as the geological factors that interact with such a process and its evolution.

Rock netting and rockfall control

Slope Rockfall Net controls serve as protection measures against rock detachment on slopes and inclines. These focus on containing and/or intercepting the falling of debris without making specific changes in the structure itself and thus avoiding personal and property damage.


When performing a rockfall net control project, an extensive analysis must be performed, where predictive models can stipulate how these structures can be supported and the type of netting that will need to be applied. We provide consultancy and solutions to completing such tasks with the utmost efficiency and quality.

Trenching and subterranean construction

Trenching works could have different purposes. They are used for placing structures such as pipelines or communications, as placed as search trenches to locate such pipeline structures of unknown location, or as foundation support or embankment placements. These works require a professional eye to solve and perform efficiently when one is working within rock and land. We provide expert consultant support on these endeavors, as well as any other underground construction effort where the soil and underground rock must be taken into account and modified in one way or another.

Engineering Geology and Seismology

  • Property due diligence – geologic characterization, geologic and related hazards
  • Feasibility of development
  • Special studies zone issues
  • Landslide and unstable ground evaluation
  • Foundation embedment
  • Caisson and piles - design and construction support
  • Dewatering, subdrainage, and groundwater control
  • Infiltration and seepage behavior
  • Rock strength and behavior
  • Rock netting and rockfall control
  • Black shales
  • Corrosive bedrock and soils
  • Hard rock – rippability and blasting
  • Karst and sinkhole terrain evaluation
  • Desert terrain – alluvial fan, bajada, mountain front
  • Marine / coastal terrain
  • Blufftop and terrace terrain
  • Lakes and water features
  • Evaluation of agricultural properties for development tile drainage issues
  • Special terrain – lowland desert – Coachella / Imperial / Great Valley
  • Flood plain issues
  • Storm drainage and control
  • Seismic hazard assessment – primary, including active fault / AP zone secondary, including liquefaction, dry seismic settlement, lateral spread
  • Earthwork and embankment design and construction
  • Mapping and site characterization
  • Subsurface exploration – drilling, trenching, geophysics
  • Natural systems evaluation – vegetation and its influence on terrain performance
  • Hillside and slope behavior, assessment, and performance
  • Soil and rock thermodynamics and physics
  • Earthwork and development influences on offsite areas
  • Trenching and subterranean construction
  • Mining operations, SMARA and related issues
  • Land reclamation
  • EIR and SP / CEQA, NEPA related studies
  • Mineral resource evaluations
  • Structural geologic evaluation, rock fabric and its characterization
  • Stratigraphy and sedimentation
  • Tectonics
  • Aerial, aerial stereo, and satellite mapping / historical evaluation
  • Remote sensing studies and interpretation
  • Geologic hazard assessment, mitigation, and risk management