Hmm, Pak64 waste add-on is neither on the SF site (because the latest version for it is 99.13, July 2007), nor in the pak64 100.0 archive, nor at the other places that I looked.
Therefore, I provide it as an attachment here, from my local harddisk.
Regarding SF downloads: in the link that I posted, you have to click on the links in the column "Packages", not in "Downloads", to get all versions.