Exposure Factors Interactive Resource for Scenarios Tool (ExpoFIRST)
ExpoFIRST is a cutting-edge scenarios tool that draws from the underlying content of the EPA's Exposure Factors Handbook: 2011 Edition (EFH) data (and now from the more recent 2017-2019 chapter updates) to create an interactive tool that maximizes flexibility and transparency for exposure assessors to make more informed decisions.
![A scientific modeling tool that pulls from the EPA's 2011 Exposure Factors Handbook.](/sites/default/files/styles/small/public/2016-09/expofirst_icon.png?itok=kbyC9CnX)
Also in 2019, ExpoKids, an extension to ExpoFIRST, was developed by the Office of Children’s Health Protection (OCHP) in collaboration on a children’s aggregate exposure project between OCHP and Office of Research and Development (ORD) scientists. The ExpoKids R-based tool allows for visualization of aggregate exposure estimates, produced by ExpoFIRST, across lifestages to provide a different perspective of the data. ExpoKids R Shiney application, a web based extension from R, will be released in the fall of 2020.