Registered Engineers and Geologists

Our professional staff includes two Registered Geotechnical Engineers, three Registered Civil Engineers, three Certified Engineering Geologists and two Project Geologists. In addition, our staff also includes an experienced group of engineers, geologists, management personnel, and technicians.

	Robert J. Johnson R.C.E., G.E., R.E.A. BS San Diego State University Mr. Johnson serves as President of CHJ Consultants. Prior to joining CHJ Consultants, Mr. Johnson Served as President of C.H.J. Incorporated for 8 years and was with C.H.J. Incorporated since 1971. He has “hands on” experience in all aspects of the field and laboratory services offered by Consultants having worked up through various field and laboratory positions. As President of Consultants, he will oversee the daily operation of the business, staff and employees. Mr. Johnson is also in charge of forensic investigations and continually provides his expertise to the legal profession, generally involving the defense of fellow engineers. Mr. Johnson is proud to bring his 40+ years of experience to Consultants. He will team with many prior C.H.J. Staff and Employees at Consultants, many of whom have been with Mr. Johnson for nearly as long as his entire career. The leadership and management team at Consultants will ensure that “Service to our Clients” is a tradition that will be carried on.
	Jay J. Martin, Vice President - Geology Division P.G., C.E.G., B.S., M.S., University of California, Riverside Mr. Martin has more than 27 years of experience evaluating and mitigating geologic concerns and hazards across the state of California. He holds Bachelor’s and Master’s degrees in Geological Sciences from U.C. Riverside. He is a California Certified Engineering Geologist and a Professional Geologist. He has provided projects with senior level engineering geologic oversight for design and construction of hospitals, schools, dams, roadways, bridges, railroads, intermodal yards, and large residential and commercial development projects. Mr. Martin's areas of expertise also include disaster evaluation and mitigation, mining reclamation, as well as groundwater resource exploration, evaluation, and development.
	Allen D. Evans, Vice President - Geotechnical Division R.C.E., G.E., B.S., M.S., University of Idaho, University of Southern California Mr. Evans has more than 29 years of experience with geotechnical engineering and construction management projects. His experience includes a wide variety of public and private facility projects: commercial/industrial developments; residential developments; water supply and treatment facilities; landfills; airports and roadways. Responsibilities vary from scoping, performing field and laboratory investigations, to engineering analysis and report preparation. He oversees laboratory materials testing of soils, concrete and asphalt, and field activities including materials sampling, foundation investigations, testing, and inspection. He is experienced with the design of pavements, sampling, and field testing with Caltrans specifications. He is also familiar with construction practices for large-scale grading and infrastructure design and improvement projects.
	Dr. Fred Yi, Chief Engineer G.E., R.C.E., B.S.C., M.S.C., Ph.D. University of Tokyo, Japan Mr. Yi has more than 27 years of experience in the industry and is responsible for the preparation of geotechnical investigation and percolation reports, as well as special reports to analyze and recommend mitigation measures for specific soil situations. Such reports include recommendations for site grading, foundation and retaining wall design, slope stability, liquefaction potential, and seismic settlement, as well as recommendations to deal with any special or unusual soil conditions existing at the job site. In addition, other duties include periodic field observation of projects, as well as problem solving of day to day situations inherent within on-going projects. Recently, Dr. Yi proposed new methods for evaluating post-earthquake deformations, including liquefaction-induced settlement, lateral spreading and seismic settlement of dry sand, based on shear wave velocity. Papers related to these methods have been published in the various International Conferences. Dr. Yi has also developed a comprehensive package, www.GeoAdvanced.com, for geotechnical and civil engineers. It includes four (4) sub packages. The main functions include liquefaction potential, seismic settlement, liquefaction-induced lateral spreading, compression/consolidation deformation of multi-footings, bearing pressures and subgrade reaction moduli considering multi-layered soil profile, as well as earth pressures with any slope configuration, and many others.
	James F. Cooke, Project Engineer R.C.E., B.G.S., University of Idaho Mr. Cooke is currently a Project Engineer for C.H.J. Incorporated and has more than 35 years of experience dealing with construction projects in the field of civil engineering. His experience includes both public and private construction projects. The wide range of projects include residential and commercial development, new and existing roadway improvements and upgrades, railroad improvements including grade separations and bridges, and public utility projects including fresh and wastewater treatment plants and reservoirs. Mr. Cooke graduated with a B.G.S. from the University of Idaho and is a registered Civil Engineer and a Land Surveyor in Training in the State of California.
	Ben Williams, Project Geologist P.G., B.S., San Diego State University. Mr. Williams is a Professional Geologist with more than 35 years experience in the local area in all phases of geotechnical investigations. His experience includes geologic and geotechnical engineering investigations, characterization and analysis of soil and bedrock conditions for a wide range of projects including multi-story structures, hospitals, schools, housing developments, roadways, and utility alignments, as well as on-site storm water and effluent disposal systems. Geologic field studies, laboratory tests, geological engineering and geotechnical engineering phases of investigations are also included in Mr. Williams’ experience. He has a B.S. degree in Geology from San Diego State University supplemented with continuing educational studies, including geology and engineering courses at local colleges and universities.
	Ann Laudermilk, Environmental Projects Manager B.A., R.E.A., Pomona College Ms. Laudermilk is CHJ’s Environmental Project Manager and has 7 years of experience in performing all phases of environmental assessments. Her responsibilities include performing Phase I and Phase II environmental site assessments, as well as conducting subsurface investigations. Ms. Laudermilk is also responsible for the daily management of the Environmental Division including field oversight, project costing/scheduling, and proposal preparation. These projects include large residential developments, grade separation and other corridor alignments, and numerous individual industrial, commercial, and vacant properties, as well as storm water sampling and water quality monitoring well sampling.
	John McKeown, Project Geologist P.G., C.E.G., B.S., M.S., Cal State University, Los Angeles Mr. McKeown has more than 10 years of experience with geotechnical engineering and geohazards mitigation projects. His experience includes a wide variety of public and private facility projects: school, hospital, commercial/industrial developments; residential developments; and water supply and treatment facilities. Responsibilities vary from scoping, performing field investigations to geologic evaluation and analysis and report preparation. He oversees field investigations, evaluation of site-specific geohazards, seismic hazards investigations, and seismic shaking evaluations for geotechnical design. He is experienced with fault rupture hazard investigation and mitigation, site-specific ground motion analysis, geohazards evaluation, field mapping, rock slope stability investigation and analysis, and general slope stability analysis.
	Vincent John Romano, Staff Geologist B.S. Geology UC Berkeley Mr. Romano is a Staff Geologist and has over 4 years of experience with CHJ. His experience includes geotechnical investigations, inspections, and laboratory testing on various types of projects that CHJ has conducted. He has a Bachelor of Science degree in Geology.
	David Mino, Staff Geologist B.S. Geology San Jose State University Mr. Mino is a Staff Geologist and he has more than 30 years of professional experience. He is responsible for conducting field observations and testing pertinent to geotechnical investigations, percolation investigations, subsurface explorations, and foundation investigations. He is also responsible for assimilating and monitoring field conditions, testing, and laboratory paperwork.

CHJ Consultants is a Full-Service Geotechnical Engineering, Materials Testing, Construction Inspection, Environmental, and Consulting Firm