This document presents a new legal assessment conducted by Leigh Day Solicitors of London and Kate Cook at Matrix Chambers of the use of positive impacts within the impact assessment procedure, and analyses it alongside the use or inclusion of positive impacts in other international environmental and regional instruments, as well as in the context of international law and practice. CSC believes these findings will be informative as the Organization conducts its lessons learned exercise and the revision of the impact assessment procedure, and raise the importance of including additional impacts beyond the scope of economic ones in the consideration of the regulatory impact assessment procedure.