Randall Sillan, PhD, PE, BCEE
Principal Environmental Engineer
Dr. Sillan has over 18 years of experience as an environmental consultant and professional engineer with extensive experience coordinating and developing expertise in NAPL investigation and remediation strategies. He leads AECOM’s NAPL Technical Practice Group, has co-instructed NGWA’s NAPL Short Course, and chairs the committee that develops the professional environmental engineering exam for the National Council of Examiners for Engineering and Surveying (NCEES). While researching and developing innovative remediation strategies, Dr. Sillan has published peer-reviewed articles and presents at conferences. He has conducted several field-scale demonstrations of in situ NAPL remediation technologies, such as cosolvent flushing, surfactant flushing, and enhanced bioremediation with multiple substrates and delivery methods. Dr. Sillan has extensive experience with advanced NAPL assessment tools, and managed the first field-scale demonstration of the partitioning tracer test to characterize the mass and distribution of NAPL.
PLATFORM PRESENTER - Oxidative and Reductive Treatments
Evaluation of Bio-Oxidation to Mitigate Long-Term Dissolution and Mass Discharge of Contaminants from Coal Tar and Creosote