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Courtney Johnson has conducted geotechnical field investigations, geologic reconnaissance, and performed seismic hazard studies for various projects located throughout California, the United States, and internationally. Her project responsibilities have included assessment of earthquake-related geologic hazards (e.g., surface fault rupture, slope stability, and liquefaction and related phenomena), seismic source characterization, and running computer models to calculate probabilistic ground motions and probabilistic fault rupture hazards. 

Ms. Johnson has extensive experience leading subsurface explorations by developing and coordinating field investigation plans, and logging and sampling test pits and trenches or materials from hollow-stem auger, mud-rotary, rock coring, and sonic drilling. Her projects have focused on dams, levees, conveyance structures (e.g., penstocks, abutments, spillways, pipelines, tunnels, canals), and buildings. Ms. Johnson has been responsible for compiling extensive reports for geotechnical field investigations and geologic hazards studies, including presentations to owners and clients, and interacting with regulatory agencies and engineering peer reviewers.