Tennessee

Since the beginning of 2007, Atlas Energy has accumulated 120,000 net acres located in eastern Tennessee. The Company believes this acreage contains up to 500 potential horizontal drilling locations in the Chattanooga Shale. Today, Atlas Energy operates more than 450 wells producing from conventional zones, as well as the Chattanooga Shale, and is the largest producer of oil and gas in Tennessee.

The Devonian Chattanooga Shale is an organic, hydrocarbon rich shale found throughout eastern Tennessee. This productive horizon is located beneath the Mississippian Fort Payne Limestone at a depth of between 3,000 and 4,000 feet. The shale thickness ranges from 80 to more than 200 feet and is thought to be the source rock for the hydrocarbons produced from many of the conventional reservoirs in Tennessee.

Atlas Energy’s affiliate, Atlas Pipeline Partners, is installing two natural gas processing plants that will be capable of serving a broad area of eastern Tennessee. Atlas Pipeline’s ownership of these facilities, along with the recently acquired intrastate pipeline system, offers Atlas Energy an advantage in acquiring additional leasehold acreage.