When I type "gastar" spell check offered the replacement word "bastard".
Here's a presentation they published this month.

http://files.shareholder.com/downloads/GST/2929604250x7542576x73980...

new map on page 9

The presentation represents the area along the river to be the Dry Gas Core. It seems the economics of the dry gas Utica is promising, then you add Marcellus condensate.