Chris Holder is a technical specialist in air dispersion modeling and human health risk assessments. He is a technical lead supporting the U.S. Environmental Protection Agency (EPA) Risk and Technology Review (RTR) and National-Scale Air Toxics Assessment programs, which includes managing and manipulating large emissions databases, developing inputs for regulatory inhalation and multimedia/multipathway models, and developing tiered multimedia/multipathway analysis tools for human health and ecological hazard.
Mr. Holder has supported air quality and exposure analyses for several EPA assessments of lead, NOx, SOx, urban air toxics, vehicle fuel economy, and hazardous waste. He has performed transportation-related air quality analyses, health risk analyses, and model development for local, state, national, and international agencies, including for on-road vehicles, off-road vehicles, and harborcraft. He performed extensive greenhouse gas (GHG), climate, and air quality assessments for a U.S. Department of Energy (DOE) environmental impact statement (EIS), and he helped develop methodologies to estimate the locations and production amounts of crops going toward biofuels production.
Mr. Holder has an M.S. in Meteorology from North Carolina State University. He has experience with MS Access, MS Excel, ArcGIS, AERMOD, OB/ODM, MOVES, HEM-Screen, CALPUFF, CAP-88, APEX, TRIM.FaTE, VBA, R, MATLAB, Fortran, Java, Perl, and Unix/Linux.