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Kleinfelder
3200 Gateway Centre Blvd, Suite 100
Morrisville, NC 27560

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Dr. Johnsie Lang serves as a technical expert at Arcadis in Raleigh, NC. Her primary research areas include solid waste, per- and polyfluoroalkyl substances (PFASs), and harmful algal blooms (HABs).  She has authored over a dozen peer-reviewed publications and participated in research funded by National Science Foundation (NSF), Environmental Security Technology Certification Program (ESTCP), the Air Force Civil Engineer Center (AFCEC), Hinkley Center for Solid and Hazardous Waste Management, and various industrial sponsors. She received her doctoral degree from North Carolina State University (NCSU) with a dissertation demonstrating a national estimate for PFAS release from U.S. municipal landfills in leachate and PFAS release with time from carpet and clothing in model anaerobic laboratory-scale landfill reactors. Dr. Lang has extensive expertise in assessment and monitoring of PFASs in solid, gas phase, and aqueous samples.  Her ORISE postdoctoral fellow at the US Environmental Protection Agency (EPA) resulted in a deep understanding of various analytical methods used to measure emerging contaminates in the environment. She has proficiency in examining the fate and transport of recalcitrant pollutants in the environment. Recently, Dr. Lang has focused her efforts on developing a method for removing residual PFASs from fire suppression systems during foam transition.  She regularly assists with interpreting and evaluating data collected from field studies on PFASs. In addition, she serves as a technical advisor on several site investigations for PFAS at US Army installations and assists various industrial and commercial clients to understand PFAS impacts at their facilities.