Enter the building. Go down the stairs. At the bottom is the Storage Container.
Enter the garage with the weird construct in the center. At the back is a ramp going down. There is Storage Container 2.
Storage 3 and 4:
Go down the ramp. There in the garage is a room with two storage containers in it.
Storage 5 and 6:
Same garage level but on the other side, before you leave the garage, is a room with another 2 storage containers.
Leave this garage through the door, staircase going down. At the bottom of this staircase is Storage Container 7.
Storage 8, 9 and Ark Chest:
Follow the path and kill Grull.
Then exit the room.
Here are Ark Chest, Storage Containers 8 and 9.
Storage 10, 11:
Take the elevator up.
Up here are the last two Storage Containers.