Rewards:
This mission becomes available after liberating Sunrise Farm. You have to find three irrigation pieces scattered in the immediate area. Their locations are listed below:
On top of a wind vane.
You have to shoot it to make it fall to the ground so you can retrieve it.
Behind a flatbed trailer
This part is attached on a flatbed trailer that will be annoyingly dragged by the stupid NPC around the farm. To avoid chasing after it, simply blow up the truck or kill the driver so you can retrieve the part.
On top of the burned building
This is the easiest one to get. Just climb up the ledge it’s on and pick it up.
After getting all the parts, follow the mission marker to the irrigation system and place all the parts to complete the mission.