I removed the Xoops CMS from underneath the interoperability site. The url remains the same:
http://interoperability.ucsd.edu

These pages are purely static, written in php but with no database back-end, meaning that all content is hard-coded in the html (including the old wiki pages). There is no longer an authenticated user-base, so all pages and content are readable by the public. Future plans include the addition of a blog (another instance of WordPress), and a file upload/download manager (similar to the CCE iForum).

The old Xoops site is still online, with the new location:
http://oceaninfo-dev.ucsd.edu/interoperability

Development work for the static site will continue at:
http://interoperability-dev.ucsd.edu

Future development plans include adding a breadcrumb trail on the pages, and versioning the source code using Subversion.

EDIT - srhaber 8/19
I added the breadcrumb trail to the new site. I had trouble adding this the other day, thinking it was a php include path problem. Turns out I was just missing a helper function in the code for the breadcrumb function.