Ernest Ashley is a professional geologist with more than 30 years of experience specializing in hydrogeological and hazardous waste site investigations. He is a Licensed Site Professional in Massachusetts, a Licensed Environmental Professional in Connecticut, and an American Academy of Environmental Engineers Board Certified Environmental Scientist. He holds a B.A. in Geology from the University of Colorado and an M.S. in Engineering–Hazardous Materials Management from Tufts University. He is a consultant for several major industrial and defense corporations. Throughout his consulting career, Ashley has worked on sites with chlorinated solvents, mercury, MGP wastes, and other DNAPLs. He is involved with the Interstate Technologies Regulatory Council’s DNAPL Characterization team and with the University Consortium for Field-Focused Groundwater Research.