Threatening Accident Bug (PC)

During the Threatining Accident task on Smithville Dam I started to collect the oil barrels. After flipping my truck I gave up on that task for a few days. I've come back to complete it and the barrels are no longer around. Only the dropoff point remains. I've tried delivering regular oil barrels to just bypass the bug but it has not worked. At this time there is no way to complete the task without a reset button for tasks. The truck used if needed is the Fleetstar F2070A.