- Pick up the three barrels lying near Grafton Lake and dispose of them.
- Optionally, sink the barrels in the lake with Agility 5.
To initiate the quest, head to Grafton Dam and you'll receive a transmission from Grafton's mayor instructing you to dispose of three toxic barrels. To do this, simply head around the lake and jump in to collect the three barrels, but before you head in, make sure you are stocked up with RadAway.
If you have Agility 5, you can get rid of them on the spot. However, if you are under Agility 5 you will have to carry each barrel northwest of Hemlock Holes and place them in the dumpster. Whichever you choose, disposing of the barrels will complete the mission.