geotechnical engineering consulting

CGC Geoservices, LLC is a geotechnical and environmental drilling and geotechnical engineering consulting firm in business since 2008. Led by engineers, its staff includes experienced drillers, construction managers, geologists and engineers. The firm is a women-owned business enterprise with offices in Newark, DE; West Deptford, NJ; and Bel Air, MD, serving the mid-Atlantic region. In January 2021 it acquired Walton Corporation, a Delaware-based drilling firm with over 70 years of experience.

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cone penetrometer testingenvironmental drillinggeotechnical drillingGeotechnical instrumentationgeothermal test well installationhollow stem augersinfiltration testinginterior drillinglimited access drillingmud rotary drillingrock coringSPT samplingwater well installationwire line rock coring

Coffman Consulting Company is a geotechnical engineering consulting firm based in Fayetteville, Arkansas, providing engineering consulting services to clients in Missouri, Arkansas, and beyond since 2008. Its practice combines academic research in civil engineering with practical engineering. Past projects include specialized field testing for solid waste facilities, slope failure repair, offshore technical representative services, and expert witness testimony, and it has developed and taught training courses in geotechnical laboratory testing.

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dynamic soil testingexpert witness testimonyfield testingin-situ hydraulic conductivity testinglaboratory testingsurveyingtraining coursestriaxial soil testing