Lee Abramson, P.E., D.GE, F.ASCE is an Executive Vice President at Hatch Mott MacDonald in Pleasanton, CA. In total, he possesses nearly 35 years of extensive experience in various aspects of geotechnical engineering with a specialty in rock and soil geotechnical and tunnel engineering in California, the United States and abroad. Projects have involved shallow and deep foundations, retaining walls, deep excavations and shafts, and various types of underground excavations for water resource, wastewater, energy, transit systems, railroads, highways and other public infrastructure facilities. His direct responsibilities have included all aspects of geotechnical engineering including planning, analysis, design, rehabilitation, and inspection. The author of numerous articles and books, he has also assisted in the preparation of manuals and conducted seminars and courses on tunneling, slope stability, ground improvement, microtunneling, and tunnel rehabilitation.