Executive Team

C. Fernando Aragón, R.C.E., G.E.
Mr. Aragon is a Registered Civil and Geotechnical Engineer in the state of California and has over 15 years’ experience in geotechnical and materials engineering. Mr. Aragon has worked on all stages of projects, from inception and design to testing and construction. He has extensive experience in the fields of soil mechanics, materials testing, earthquake engineering, pavement engineering, construction inspection, quality control and quality assurance. His technical experience includes slope stability analyses, settlement analyses, liquefaction analyses, bearing capacity calculations, aggregate analyses, geotechnical investigation reports and recommendations, distressed pavement evaluations, pavement structural section design, hot asphalt concrete mix designs, cold recycled asphalt mix designs, quality control and quality assurance testing for hot asphalt concrete and cold recycled asphalt, and plan preparation and specifications for pavement rehabilitation projects.

Mr. Aragon obtained a Bachelor of Science in Civil Engineering from Loyola Marymount University and a Masters in GeoEngineering from the University of California, Berkeley. In his free time, Fernando serves as a sub-committee member for the Caltrans CIR/CCPR Committee.  He loves to spend time with his family, golf and travel.

Mark G. Doerschlag, P.G., C.E.G.
Mr. Doerschlag is a Registered Geologist and Certified Engineering Geologist in the state of California. With over 35 years of professional experience in Engineering Geology, principal duties are the design, management and performance of site characterization investigations for residential, commercial, and industrial land development, schools, hospitals, mineral resource assessments, mine reclamation, and heavy construction projects throughout California and Nevada. He has been a key investigator for geo-engineering studies of two of the three dams enclosing Diamond Valley Reservoir (Riverside County), large-bore tunnels in hard and soft rock, excavated shafts, and pipelines. His technical specialties include seismology and seismic hazards analysis, liquefaction potential evaluations, fault hazard investigations, geomorphology, applied geophysics, rock mass classification for underground openings, and the evaluation of sites potentially impacted by the phenomenon of hydrocollapse.

Mark obtained a Bachelor of Arts degree in Geology from the University of California, Berkeley. He is an officer of the Inland Empire Chapter of the Association of Engineering and Environmental Geologists, and regularly serves as a subject matter expert for the California Board of Professional Engineers, Land Surveyors, and Geologists.  Out of the office, Mark is regularly drawn to the spectacular landscapes of the California mountains and deserts, and is a seasoned world traveler leading family and friends on adventures to Latin America, the Far East, and Australia.

Luis Arguello III, E.I.T.
Mr. Arguello is an Engineer-In-Training in the state of California and has over 6 years’ experience in Geotechnical and Materials Engineering in Southern California. Mr. Arguello has worked on various stages of projects, from proposal preparation, sampling and testing, and final report preparation. His technical experience includes slope stability analyses, settlement analyses, liquefaction analyses, bearing capacity calculations, AutoCAD drafting, aggregate analyses, geotechnical investigation reports and recommendations, distressed pavement evaluations, pavement structural section design, project management, hot asphalt concrete mix design reviews, Cold In-Place Recycling (CIR) and Cold Central Plant Recycling (CCPR) quality control and quality assurance, and plan preparation and specifications for rehabilitation projects. He currently holds Portable Nuclear Gauge Safety, American Concrete Institute, and Caltrans certifications.

Mr. Arguello obtained a Bachelor of Science in Civil Engineering from San Diego State University and a Masters in Geotechnical Engineering from California State Polytechnic University, Pomona. In his free time, Luis serves at his church’s security team and as CFO for Giverside, a non-profit organization. He loves to spend time with his family, visit national parks, golf, and perform home improvement and DIY projects.