File:Q4.png Waste Processing Facility is the 18th level of Quake 4. Passing through the Putrification Center. Where a lot of strogg and marines have died. Kane must head through the final section of the Strogg harvesting place. The Waste Processing Facility, where all the failed test subjects of creating Strogg forces are being disposed and have become zombies. Now, Kane has to pass through and retreat back to the USS Hannibal.