The semitrailer that crashed Monday was hauling large machinery and equipment. However, around 100-150 gallons of diesel fuel from its engine spilled into Woods Creek, said Keith Guille, public information supervisor with the Wyoming Department of Environmental Quality.

Guille told the Boomerang while the DEQ was notified of the spill, it’s “very difficult to do anything” after the fact because it’s a moving body of water and much of the spill is downstream before anyone can get to it.

“The previous spill, we did go out onto the area to do some sampling,” Guille said. “I don’t think it’s unreasonable to expect our staff to go out there if need be to do additional sampling.”

He added the moving water also makes it harder to determine what environmental impact — if any — the fuel spill would have on the surrounding environment.

“It’s not that it’s not a concern, it certainly is,” he said. “These are not instances we like to see … but unfortunately, we see it once again in that area. Hopefully that’s something that’s not going to be reoccurring.”