Penn State Extension Natural Resources has a Marcellus Shale section with information on environmental issues pertinent to natural gas development.
Office of Fossil Energy's Oil & Natural Gas Office supports research and policy options to ensure environmentally sustainable domestic and global supplies of oil and natural gas.
EPA lists fact sheets on Hydraulic fracturing
An exploration of natural gas drilling and development in the Marcellus Shale
The Pennsylvania Environmental Council (PEC) has a Marcellus Shale Lease Guide as a resource for Pennsylvanians considering leasing their property for Marcellus Shale gas production or who have decided to lease and are beginning the negotiating process.
The millions of gallons of water required for drilling and the associated waste products are major concerns here in Pennsylvania.
The Groundwater Protection Council promotes the protection and conservation of ground water resources for all beneficial uses, recognizing ground water as a critical component of the ecosystem.
This primer was commissioned through the Ground Water Protection Council (GWPC) in an effort to provide sound technical information on and additional resource development activity, and environmental protection, especially water resource management. The GWPC is the national association of state ground water and underground injection agencies whose mission is to promote the protection and conservation of ground water resources for all beneficial uses.
FracFocus.org is the hydraulic fracturing chemical registry website, a joint project of the Ground Water Protection Council and the Interstate Oil and Gas Compact Commission.
Online youth-oriented tutorials on water's journey through the Marcellus shale natural gas drilling and production cycle and considerations about water and drilling in the mid-Atlantic region.
The National Energy Technology Lab (NETL) has a variety of research projects designed to help catalyze the development of these new technologies, provide objective data to help quantify the environmental and safety risks of oil and gas development, and characterize emerging energy resources like methane hydrates.
The Pennsylvania Land Trust Association has a webpage where additional Natural Gas information can be found at Conservationtools.org