Inspectors found defects in the liner intended to prevent oil or gas from leaking into groundwater at a Susquehanna County well, according to a 19 September notice of violation from the Pennsylvania Department of Environmental Protection, Bloomberg reported.

The violation was reported earlier today by the Scranton Times-Tribune.

Methane levels in a private water well 1,400 feet away from Cabot’s operations rose from 0.29 milligrams a liter to 57.6 milligrams a liter between November 2010 and August 2011, according to the notice.