Yeah, I'm looking at the blast door map right now:
http://http://images.lostpedia.com/i...a_stations.jpg, so I'm wondering if what is noted as C4 is the Orchid Station. C3 seems to be the Tempest because of the descriptions around it (light industrial equipment, lots of dharmatel relays for communication of power supplies and possibly poisonous gas). The other stations' locations are already known (The Swan, Arrow, Staff, Flame and Pearl).
There is a CV right next to this C4 location. What's interesting is the note "x4 y8 z15 subterranean conduit?" Perhaps this is the conduit connecting the barracks to the Orchid station, which makes sense because it's relatively close to two sets of CV (good for civilian escape during a monster or Hostile attack).