User blog comment:Per Ankh/Rules about God Tiered Agents/@comment-4273152-20140205185846/@comment-4273152-20140205205256

Remember I also brought that up too. The goo flows from the processing centre straight to the Dark Vault, which is canonically nearby, then is pumped via underground siphons through the warehouse. Underneath the floor is essentially a series of holding tanks connected by pipes and filters that are replaced every few weeks like blood in the body. There are also tubes running along the walls which take used goo from the tanks back to the processer to biodegraded and have re-usable compounds recycled. At least, Iimagine it that way.