Maintenance Level

The  and the connected Waste Disposal are locations on board Mothership Zeta.

Maintenance Level
If you use the Teleportation Matrix to the Maintenance Level during Among the Stars, you will find Sally attempting to fix the control panel on a Zeta trash can. She explains that she is not really lost and you both might find 'something neat'. Before long though, it starts moving, and it's a long way down...

The trash can stops at several levels of the Zeta Mothership:
 * A level with a single Alien.
 * A level containing Brahmin. ("We got cows!")
 * A level with a Corvega in pristine condition.
 * A level with 4-5 Aliens.

The elevator will stop on the last level and may involve a shoot-out if you are not adequately prepared and hidden. Sally will climb out explaining that she will figure something out. The trash can will then suddenly plummet and a first person view of the player will show you scrabbling for grip, and ultimately failing - landing in a detritus ridden area.

Sally then re-appears. You can tell her you wish to go back the way you came, and she will explain that, that is impossible unless you are Captain Cosmos. Telling her you should both split up leads to her running off, explaining that she will 'try to find a way to get you out of there.' At this point you may find your left leg is crippled. Use a stimpack or wait for a later healing archway, then open the door to Waste Disposal.

Waste Disposal
Inside you will find a maze of trash compactors. One situated ahead, can be turned on and off and you will find it proves quite adept at destroying anything you place in it's path. Just watch where you walk, and head to the exit to this room in the lower west corner.

Another maze of tubes and trash in the next room and Sally's voice emanates. In here there is a First Aid box containing a Stimpack and Rad-X and a safe. Exit the door to find a Support Drone clearing garbage. If you didn't heal yourself of the cripple earlier, there is a healing archway in this tunnel. Go through the next room of trash, to find 2 aliens up on a walkway in the next room. Kill these, or stealth past and you will eventually come to a room with a Guardian Drone. You can kill it for its Drone Cannon or push it onto the trash compactor. Either way Sally opens the next doorway for you.

The next room will contain 2-3 aliens who drop down from a rampway above, unless you're adequately stealthed. Dispatch these somehow using the trash compactor, or just kill them, and Sally will have opened doorway 2.

Notable loot

 * In the vicinity of the first aliens encountered in Waste Disposal a Military Footlocker can be found on the floor to the right of the path containing General Chase's Overcoat along with a blank holotape labelled Anchorage Quartermaster Shipment
 * At the end of Waste Disposal, in a room with lots of medical kits, is the Samurai's Sword.

Appearances
Maintenance Level and Waste Disposal appear in the Fallout 3 add-on Mothership Zeta.

Trivia

 * One of your choices to begin the conversation with Sally before you enter Waste Disposal is "What a wonderful smell you've discovered." This is a reference to "Star Wars: A New Hope". Han Solo follows Leia, Luke and Chewie down a garbage chute to which this line is uttered.