This Marcellus Shale Lease Guide is intended as a resource for Pennsylvania residents who are considering leasing their property for Marcellus Shale gas production, or who have decided to lease and are beginning the negotiating process. It identifies some of the key environmental issues that can be addressed in a lease; summarizes the types of approaches that have been used to address these issues in Marcellus Shale gas leases in Pennsylvania; and offers options for handling these issues in a more protective Marcellus Shale gas lease, using best management practices employed in oil and gas leasing in Pennsylvania and nationwide.