My question is, where can I find the chemical sample for Cpl. Farber Keely mentions?

It's on a table next to a computer, I don't believe it was one of the computers that's usable, but I do remember it sitting next to one.

First or second level, I think.

I found it. Actually it's on the third level, food production level. It is next to a usable computer and a bunch of mushrooms.

Aww but now I can't find corporal williams farber.

Edit: Nvm I found him, he is the chef in camp macarren.