Are you sure? :-)
Fact is, it's at different depths in different places, and it crops out in many places.
Gondring asks “Are you sure? :-)”?
Well, I’m sure no expert! I just have 14 acres that we leased to Cabot last fall, so I’ve done some reading. My understanding is that the Marcellus formation is way below water wells. Of course there can be leaks and problems along the way, I am not disputing that. But basically this is a deeper formation than has been exploited over the past decades prior in PA, as far as I understand.