The goal of this project was to establish a UX decision making framework for successfully evaluating the user experience for an Enterprise Portal. The deliverables included benchmarking the current experience and a step-by-step process and reusable assets for ongoing measurement.
I have a related blog post based off this topic. You can read it here http://disciullodesign.wordpress.com/2011/12/08/6-steps-for-measuring-success-on-ux-projects/