After initial deployment, TDL will enter the maintenance period for the repository during which each campus will use the system for ongoing ETD management. The working groups will continue to address emerging maintenance issues to ensure that the system is satisfying its functional requirements. TDL will evaluate the Texas ETD Repository using multiple methods: user studies, usage statistics, and repository certification. User studies will assess service quality through surveys of faculty, students, and repository users. Usage statistics, based on server log analysis, will be employed to evaluate user access of the repository. This analysis can contribute to an understanding of how the various discovery services lead users to the content in the repository. TDL will also develop a certification process that defines the minimum qualities and services to be provided by TDL members regarding ETDs.