Harley Hopkins is a Technical Advisor with Technical Services, ExxonMobil Environmental Services (EMES) and is located in Falls Church, Virginia. Harley serves as EMES’ technical network coordinator and facilitator of the EMES Investigation Network. Prior to joining EMES, he was a Manager and Sr. Environmental Scientist at the American Petroleum Institute (API) and an exploration geologist for AMOCO. His areas of expertise include: vapor intrusion, LNAPL, and oil and natural gas waste. He is a Certified Professional Geologist in the State of Virginia, USA.