Randy Sillan is a professional environmental engineer currently serving as Associate Vice President and Principal Environmental Engineer at AECOM, where they lead strategic site closures and serve as Project Technical Lead and Engineer of Record. Prior to this role, they were Associate Vice President and Principal Engineer at ARCADIS from 1998 to 2015, specializing in non-aqueous phase liquids and leading various technical projects and training initiatives. Sillan holds a Bachelor of Science in Mechanical Engineering, a Master of Engineering in Environmental Engineering, and two Ph.D. degrees in Soil and Water Science from the University of Florida.
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