Investigate any suspicious objects

How do you complete "Investigate any suspicious objects"?

This is step 3 of 3 in Source of the Contamination, given by Celeste. It is completed on Dam Battlegrounds. The exact location is marked on the Dam Battlegrounds map.

• Source of the Contamination
• Dam Battlegrounds

What are the other objectives in Source of the Contamination?

Source of the Contamination has 3 objectives in total: Reach the Water Treatment Building in The Dam, Search for the Flood Spill Intake near the Swamp and Investigate any suspicious objects.