Fred Baldassare is a gas migration expert who worked for DEP during the Dimock investigation of gas migration.
He has submitted a must read comment to the Duke Study post of monday May 9th.
Read the comment that confirms the gas that migrated in Dimock was shallow gas above the Marcellus to which the driller was drilling. That fact does not minimize the problem posed by gas migration.
No matter the source of gas, gas migrating is a problem that must reduced.