Storage 1, Ark Chest 1:
You're at the top of a complex that expands down.
Starting from the top, follow the path to the elevator ath the far back and take it down.
Here, follow the path again to another elevator. Don't take it yet, Storage 1 and Ark Chest 1 are nearby.
Storage 2, 3 and Ark Chest 2:
At the top, some goons will let you in. Get rid of them and loot Storage Container 2, 3 and the last Ark Chest.