Will a foreign refiner or blender, or an importer of RFG produced overseas, be given some kind of credit for plant emissions outside the United States?

No. The RFG regulations do not extend to foreign refineries.(8/29/94)

This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (PDF)(333 pp, 18.17 MB, EPA420-R-03-009, July 2003, About PDF)