Eric Edwalds has 30 years of experience with air dispersion modeling, ambient air monitoring, meteorology, emission calculations, and statistical analysis of environmental data. He first began modeling APFO/PFOA air emissions in 2006, helping a manufacturing client meet New Hampshire’s standards for regulated toxic air pollutants. His recent work includes conducting deposition modeling of PFAS compounds, which has involved calculating historical emissions from facility operational records to evaluate multimedia fate and transport of these substances.