I hope this is where it ends. Any drilling operation necessarily involves at least some substances that could contaminate the lake.
Apparently they’ve already managed to introduce some amount of drilling lube and such. The lake is under terrific pressure, had they really effed it up (pardon my L) it would have created one of the all-time cool-looking geysers, but lost the chance for studying the ancient (?) meltwaters, and created a nice sinkhole.