John Xiong, Ph.D., P.E.

Principal Consultant
Haley & Aldrich, Inc.

John Xiong, Ph.D., P.E. is a Principal Consultant and Applied Research Leader at Haley & Aldrich, Inc. He has over 20 years of experience in environmental engineering, consulting, applied research, and litigation support. He has developed cost-effective and streamlined strategies for final remedies accepted by federal and state regulatory agencies on projects that entail complex technical and policy issues. As a Principal Investigator, he is currently leading multiple applied research projects funded by federal agencies to develop innovative technologies for PFAS treatment and assessment.