Nathan Hosburgh and Chris Bulock have self-archived "OA in the Library Collection: The Challenges of Identifying and Maintaining Open Access Resources."
Here's an excerpt:
At this session, they [the authors] shared survey results, reflected on OA workflows at their own libraries, and updated audience members on relevant standards and initiatives. Survey respondents reported challenges related to hybrid OA, inaccurate metadata, and inconsistent communication along the serials supply chain. Recommended solutions included the creation of consistent, centralized article-level metadata and the development of OA collection development principles for libraries.