The Citizen Science Interoperability Experiment is organized in two phases.
The first phase concluded with the publication of a ER that you can read in http://docs.opengeospatial.org/per/19-083.html and find in the corresponding folder:
This is the active one that can be followed here: http://external.opengeospatial.org/twiki_public/CitSciIE/WebHome. The corresponding folder will be used latter to elaborate a second ER.