Maybe not on purpose however. I'm actually a little shocked that a company like Artco would have this happen several times. There are a lot of towing outfits I wouldn't be surprised about if they did this but Artco is not on that list. I'm hoping that my good friend John will come to his company's defense.
One time in St. Paul, while taking on fuel at a Koch dock, a couple hundred gallons of diesel spilled into the river. I don't remember what the issue was that caused the spill but we weren't being negligent. Maybe a hose ruptured or something. We reported it to the Coast Guard immediately. While they were en route we coated the surface of the water with Dawn dishwashing liquid. Hey, nothing cuts grease like Dawn. By the time the water cops arrived, there wasn't an oily sheen on the water at all. We told them what happened and they really had no way to verify or refute the story. They wound up having to just document an incident report and that was all.