Nikos Tzetos has been consulting in the Pacific Northwest for thirteen years, performing near-surface geophysical surveys, including UST and UST pit searches, drum and debris-pit mapping, utility locating, borehole clearance, leachate plume detection, depth-to-bedrock and concrete inspection surveys. Nikos has used several geophysical methods, including magnetics, electromagnetics, ground-penetrating radar (GPR) and electrical resistivity.

Nikos holds a Master’s degree in Geosciences from The Pennsylvania State University and a bachelor’s degree in Geology from the Aristotle University of Thessaloniki, Greece.

Jeff Mann has been a geophysical consultant and researcher in the northeastern US and the Pacific Northwest for more than thirty years. His geophysical experience includes gravity, magnetics, electromagnetics, electrical resistivity, ground-penetrating radar, seismic refraction, borehole logging. He has worked at hazardous-waste sites, commercial facilities and residential sites.

Jeff is a registered professional geologist in the States of Oregon and Washington. He holds a master’s degree in Earth Science from Western Michigan University and bachelor’s degrees in Geology and Physics from State University of New York, Potsdam.