Looks like it was a report for a class (NE161 -- "Nuclear Power Engineering"). I don't know Rhodes, but our Nukee department webserver doesn't seem to protect it's directories:
http://www.nuc.berkeley.edu/thyd/ne161/jlrhoads/
Looks like the website, at least, was made in 2003. In July, though? Maybe it was a summer class. Anyway, it's as good an educated guess as any.
No, wait a minute... This is really strange. Check this out:
http://www.nuc.berkeley.edu/thyd/ne161/ne161.html
It's listed as projects from
1994! Wow, that was a long time ago. I was a first year grad student back then. But it's consistent with the references, in which he references his own lecture notes from a year earlier.