Mahsa Modiri

PFAS Practice Lead
EA Engineering, Science, and Technology

Mahsa Modiri, PhD, PE is an expert in contaminants of emerging concern (CECs), particularly PFAS, with extensive expertise in analytical methods, fate and transport, remediation technologies, and regulatory framework development. With over 14 years of experience, she has led high-impact research funded by the Water Research Foundation (WRF), U.S. Environmental Protection Agency (EPA), Strategic Environmental Research and Development Program (SERDP) – Environmental Security Technology Certification Program (ESTCP), and the Department of Defense (DoD). She has authored 30+ peer-reviewed publications and has been actively engaged in publishing cutting-edge research on PFAS treatment, monitoring strategies, and regulatory advancements. Dr. Challa is a senior environmental engineer with 13 years of experience in environmental engineering and research. He holds a Ph.D. in Environmental Engineering from the University of North Dakota, where he focused on developing methods for the removal and destruction of per- and polyfluoroalkyl substances (PFAS) across various environmental matrices. As a Senior Environmental Engineer at EA Engineering, Science, and Technology, Inc., PBC, he manages projects, provides technical guidance, and leads business development initiatives related to contaminants of emerging concerns (CECs). Dr. Challa has extensive expertise in thermal treatment, having characterized the thermal stability and decomposition rates of PFAS. His work utilizes advanced techniques to support the development of innovative treatment solutions for CECs contamination.