Robert O’Neill, CPG, PG, has 29 years of experience as a geologist in the environmental and petroleum industries. For the past 26 years with Brown and Caldwell he has focused on evaluation of groundwater flow in fractured rock; assessment of DNAPL impacts in rock and soil; evaluation and remediation of impacts related to MGP sites, industrial facilities, and landfills; and the assessment/remediation of contaminated sediments. In the petroleum industry, he conducted detailed analyses of reservoir structure and stratigraphy and geophysical log interpretation. As a reservist in the U.S. Navy Seabees, he has been involved in water well drilling and water supply/treatment projects.