Rachel Gyore et al. have published "Campus Open Access Funds: Experiences of the KU 'One University' Open Access Author Fund" in the Journal of Librarianship and Scholarly Communication.
Here's an excerpt:
This report documents the group's experience in developing eligibility criteria and administering the OA Fund. Here we provide insight into our efforts implementing the project, funding results, and plans for continuation. We share the results of the first two years of the OA Author Fund pilot and the lessons learned about open access fund administration.