Required Character: Jar Jar or Darth Maul
Death Star Plan 1: In the series of homes. The last room contains the plan.
Death Star Plan 2 (R2/Jar Jar): It's sitting on top of a tall pillar. The proper way to get it is to use R2's hover ability to hover to it from the canopy you spawn on. However, I simply jumped to it with Maul, which registered me as hitting it.
Death Star Plan 3 (Jar Jar): Sitting on the higher ledge to the left as you enter. Same as No. 1 from the first Kashyyyk Level.
Death Star Plan 4 (Jar Jar): Sitting on the outlet of land on the water. Same as No. 2 from the first Kashyyyk level. You can jump to it from the other side, there's a small bit of land.
Death Star Plan 5: Notice a pattern? This one is the same as No. 3 from the first Kashyyyk level. Sitting in the bottom corner, on the water.
Revealed Code: Down, Down, Down, Down, L, Right, Down, Right, L