This document is intended to serve as a companion to FRA’s CE worksheet. The CE worksheet assists FRA in identifying if a proposed project fits a category of actions excluded from detailed environmental review. However, even if a project fits within one of the identified categories of an excluded action FRA may nonetheless determine it is not eligible for a categorical exclusion if the project will have unusual circumstances. In instances where a CE is not appropriate, an EA or EIS will be prepared in accordance with guidance provided by FRA environmental staff.