Regarding the trial, if there was indeed a spill, it is a case for the courts. There is likely civil liability regarding the spill (for anyone who got sick or had property damage). And if there was a coverup, then add some criminal liability for those involved. I'm not close enough to the situation to know what went down, and I don't trust public statements from either side. I support 3rd party investigation.
As for the whole zoning thing, I'm torn. On one hand, I have no problem with municipalities using zoning, for instance, to prevent a well pad from being placed within a residential neighborhood. If they do it honestly. On the other hand, I fear that's not what will happen.
Entire townships with politically motivated leadership will just decide not to have any drilling within their borders by rezoning agricultural and rural land to exclude it. Other townships with different political motivations will open everything up to their buddies. Local leadership is very corruptible. That's not good.
Overall, I want gas drilling to take place in this state. It is providing a lot of jobs, as well as government revenue. It looks to keep gas prices low for a very long time. It's more environmental than coal, which is what it's replacing, and bringing those jobs from WV up here to PA (WV obviously hates it, but hey, we have a better mousetrap now, from an economic as well as environmental perspective).
That said, I want to do it as cleanly as possible, and we can be smart about how, where, and when we do it. We have regulations regarding drilling and pollution. If the regulations are inadequate, then lets change them to make them adequate. And ENFORCE them, with punishments that actually have teeth. When crap like the above happens, make sure the full force of the law is enough to make drillers take every possible precaution, and then make examples of those who don't.