1. Differences Between Marcellus and Sanford Sub-Basin Ryke Longest Duke Law Environmental Policy Clinic

2. Size Matters Marcellus covers all of West Virginia, more than half of Pennsylvania along with large portions of New York and Ohio Sanford Sub-Basin much smaller geographically Estimates of gas recoverable in Marcellus Shale vary widely, but are in trillions NC Estimated little over 360 wells in sub-basin to get 160 acre spacing-300 BCF gas

3. Off the Map?

4. Sanford, NC From 12 Miles High Google Earth Image

5. Bradford, PA From 12 Miles High Google Earth Image

6. Questions? Ryke Longest Director Duke Environmental Law and Policy Clinic Duke University School of Law Nicholas School of the Environment Box 90360 210 Science Drive Durham, N.C. 27708-0360 (919) 613-7207 longest@law.duke.edu