Classification has matured to the point that it is ready for use on some production projects, and it is likely that it will be proposed for use in the near future, even as additional demonstrations are ongoing and understanding of the capabilities and limitations is evolving. This document is intended to provide interim guidance that will allow project managers, regulators, and contractor personnel to evaluate whether classification is appropriate for a site, establish realistic expectations based on what has been demonstrated to date, and assess whether classification is being implemented correctly.