Robin Rorick,^* Tim Nedwed,^** Greg Demarco,^** Cortis Cooper<sup>***


*</sup>Robin Rorick (rorickr@api.org) is affiliated with the American Petroleum Institute, in Washington, DC.
^**Tim Nedwed and Greg DeMarco are affiliated with the Exxon Mobil Corporation, in Irving, Texas.
^***Cortis Cooper is affiliated with the Chevron Corporation, in San Ramon, California.