Norcal Geophysical Consultants INC


Key Personnel

wblackWilliam Black, Professional Geophysicist No. PGp-843, is the Vice President of NORCAL. He is in charge of technical development and oversees/ conducts specialized surveys requiring the tailoring of geophysical techniques for very specific objectives and/or unusual or specialized site conditions. He is also instrumental in developing or adapting computer software for specialized data analysis routines. Bill has been conducting geophysical surveys throughout the United States and in several foreign countries since 1972. This vast experience has provided him with valuable insight into the use of geophysical methods for a wide variety of applications as well as how the information can best be used by others. Billís education consists of a B.A. degree in geology and an M.S. degree in geophysics, both from the University of California, Riverside. He has also completed the OSHA Hazwopper 40-hr health and safety training. In 2002 Mr. Black was appointed to the California State Board for Geologists and Geophysicists by Governor Gray Davis. In 2006 he was re-appointed by Gov. Arnold Schwarzenegger and served until June 2009. During his second term Mr. Black also served for two years as Board President.

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dkirkerDonald Kirker, Professional Geophysicist 997 is a Senior Geophysicist and Project Manager. He has over 20 years of experience using a variety of surface geophysical methods including seismic refraction, electrical resistivity, magnetics, electromagnetics, and utility locating for landfills, site redevelopments, geotechnical projects, groundwater investigations, and fault studies. His attention to detail and efficiency in the field makes for accurate and detailed results that are presented clearly in his written reports and site illustrations. He has worked on large multi-task and multi-method investigations, as well as small site specific surveys in a variety of locales and site conditions. Don has a B.S. degree in geology, with an emphasis in geophysics, from San Diego State University. He has completed OSHA 40-hour health and safety training.

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whenrichWilliam Henrich, Certified Engineering Geologist 1546, Professional Geophysicist 893, Professional Geologist 4464, is manager of the borehole logging and imaging group. Mr. Henrich has over 25 years of experience in both applied surface geophysics and borehole geophysical methods. Since his background includes engineering geology he has developed a unique talent in developing in-depth interpretations of geophysical data that include insightful aspects of engineering geology and geotechnical principals. He is also especially knowledgeable in integrating both surface and borehole methods. His previous experience includes performing Staff and Senior level geophysical surveys for a national geotechnical and environmental consulting firm. He has a B.S. in geology and a M.S. in geophysics from Idaho State University. He has completed OSHA health and safety training.

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dbissiriDavid Bissiri, Professional Geophysicist 1009, is a Senior Geophysicist and Project Manager. He has over 18 years of professional experience using various surface geophysical methods for detecting and characterizing environmental, engineering, and geologic targets in a variety of site conditions. He is especially knowledgeable in vibration monitoring, 3D ground penetrating radar surveys, and utility and subsurface hazard detection. His duties include performing field investigations, processing the results and report preparation. Dave has a B S. degree in Applied Geophysics from University of California at Los Angeles (UCLA). He has completed OSHA 40-hour health and safety training and specialized BATC training.

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dhaginDavid Hagin, Professional Geophysicist 1033, Professional Geologist 7896, and Certified Engineering Geologist 2398 is a senior geophysicist and project manager. He has over 20 years of professional experience in geophysical and geological consulting. He was the chief geophysicist and project manager of a well established geophysical firm in CA, a staff geologist for a geotechnical firm in southern CA, and established his own firm in math and science tutoring for college students. During the past 10 years he has performed a full range of surface geophysical surveys for large infrastructure projects, water resource investigations, specialized engineering problems, and environmental characterization. These projects required the use of 2D and 3D seismic reflection and refraction, electrical resistivity profiling, magnetics, and ground penetrating radar. His duties also include specialized computer processing and report preparation. Dave has a B. S. degree in geophysics from University of California, Riverside.

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ttaylorTanya Taylor, Office Manager, is in charge of accounts receivable and payable, job accounting, insurance matters, and other administrative duties. She is in charge of arranging and keeping current all health and safety training and medical monitoring. She came to NORCAL with over 15 years of managerial experience in the construction equipment industry. She was a participating member of the Northern California Engineering Contractors Association (NCECA) and the National Utility Contractors Association (NUCA). She currently serves as a California State Notary Public.

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grandallGeneva Randall, Graphics Manager, prepares all graphics for professional reports, marketing materials, and presentations by our professional staff at various professional organizations and conferences. She has been our AutoCAD expert since 1998. In addition, she has a B.S. degree in Geology from Sonoma State University. Prior to joining NORCAL, she worked as a Geologist in the environmental, engineering, and geothermal fields. Her background and training provide valuable insight regarding how to best present our survey results to meet our clients needs.

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tblackTravis Black, Senior Field Technician, has over 10 years of experience in field data acquisition, equipment maintenance, calibration, and repair. He is in charge of preparing and mobilizing geophysical equipment and other ancilliary gear prior to field start-up, and participates in most large scale field operations that require multi-method data acquisition and field logistics. He has a B.S. degree from San Francisco State University. Travis has completed OSHA 40-hour health and safety training and specialized BATC training.

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kblomKenneth Blom, President Emeritus. Ken retired in January of 2018, 35-years after founding NORCAL. During that time he developed the company from a sole proprietorship to a nationally recognized, highly regarded geophysical consulting firm. After a career that spanned a total of 50-years in geophysical consulting, Ken is now enjoying his retirement with his wife Carolyn at their homes in Graeagle, California and Princeville, Hawaii.

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