Rula Deeb is a Senior Principal Civil and Environmental Consultant based in California with more than 25 years of experience focused on private practice and academia addressing the cross-media fate and transport of contaminants, and the remediation of complex soil and groundwater sites impacted by non-aqueous phase liquids. She is internationally recognized for her industry leadership on per- and polyfluoroalkyl substances (PFASs) and other emerging contaminants in natural and treatment environments. She was the program advisor for the Interstate Technology Regulatory Council (ITRC) team on remediation management of complex sites.