Robert S Wright is a chemist in the US EPA Office of Research and Development, Center for Environmental Measurement and Modeling, Air Methods and Characterization Division (AMCD). Mr. Wright joined US EPA in 2003. He is a member of the AMCD immediate office. He provides quality assurance (QA) support to AMCD's researchers, including document reviews and assessments of technical and quality systems. He supports PFAS emissions characterization projects in the field. He also maintains the EPA traceability protocol for gaseous calibration standards and participates in the EPA Protocol Gas Verification Program (PGVP). He has approximately 50 years' professional experience in a variety of technical areas relating to environmental science. His experience in QA ranges from preparing QA guidance documents to conducting audits of gaseous calibration standards. He is the coauthor of EPA QA guidance documents for technical audits of environmental data operations, for assessing quality systems, and for developing quality systems for environmental programs. Prior to coming to US EPA, he was an environmental scientist at RTI International where he conducted contract research involving QA, instrument evaluation, environmental measurements, hazardous wastes, and atmospheric chemistry. He was also an engineering technician at the Ohio EPA where he worked with ambient air quality monitors. Additionally, he was a Peace Corps volunteer in rural Botswana where he taught integrated science and mathematics in a junior secondary school. Mr. Wright earned his B.S. degree in physics from the University of Dayton. He also earned a M.S. degree in environmental science and engineering from the University of North Carolina in Chapel Hill. His master's research was a feasibility study for the use of a long-path, Fourier-transform infrared (FTIR) spectrometer in an outdoor smog chamber and the photochemical modeling of secondary ozone formation in the chamber due to PAN decomposition based on the FTIR measurements.