Patrick O. Gwinn
Patrick O. Gwinn's headshot

Mr. Patrick Gwinn has more than 25 years of environmental consulting experience, providing a broad base of expertise in the areas of human health and ecological risk assessment, water quality, fate and transport dispersion modeling, product stewardship, air toxics sampling, and hazardous waste management.  He has been instrumental in developing and leading projects aimed at establishing site-specific ambient water quality criteria and pollutant discharge limits.  He specializes in managing and conducting human health and ecological risk assessments, site assessments, air quality modeling projects, and remedial investigations for municipalities and the manufacturing and chemical industries.  He has modeled the transport, exposure, and risks associated with PCBs, dioxins, chlorinated and aromatic hydrocarbons, aluminum, cadmium, chromium, lead, copper, and other heavy metals. Mr. Gwinn has served as an expert witness and as a non-testifying expert, providing technical guidance to legal counsel on matters related to organic and inorganic chemical forensics as well as chemical fate and transport.  As an expert witness, he has prepared expert reports, undergone pretrial depositions, and provided courtroom testimony.  As a non-testifying expert, he has provided technical support to legal counsel prior to, during, and subsequent to depositions as well as during courtroom proceedings.