F. William Grube is the president, chief executive officer and a director of our general partner. Mr. Grube has served as president and chief executive officer of our predecessor since 1990. From 1974 to 1990, Mr. Grube served as executive vice president of the Rock Island Refinery. Mr. Grube received his B.S. in Chemical Engineering from Rose-Hulman Institute of Technology and his M.B.A. from Harvard University.

James S. Carter has served as a member of the board of directors of our general partner since January 26, 2006. Mr. Carter served as a U.S. regional director of ExxonMobil Fuels Company, the fuels subsidiary of Exxon Mobil Corporation, from 1999 until his retirement in 2003. Mr. Carter received his M.B.A. in Finance and Accounting from Tulane University.

William S. Fehsenfeld has served as a member of the board of directors of our general partner since January 26, 2006. Mr. Fehsenfeld has served as vice president and secretary of Schuler Books, Inc., the independent bookstore company he founded with his wife, since 1982. He has also served as a trustee of The Heritage Group from 2003 to the present. Mr. Fehsenfeld received his B.G.S. from the University of Michigan and his M.B.A. from Grand Valley State University. He is also a first cousin of the chairman of the board of directors of our general partner, Mr. Fred M. Fehsenfeld, Jr.

Robert E. Funk has served as a member of the board of directors of our general partner since January 26, 2006. Mr. Funk served as vice president-corporate planning and economics of Citgo Petroleum Corporation, a refiner and marketer of transportation fuels, lubricants, petrochemicals, refined waxes, asphalt and other industrial products, from 1997 until his retirement in December 2004. Mr. Funk previously served Citgo or its predecessor, Cities Services Company, as general manager-facilities planning from 1988 to 1997, general manager-lubricants operations from 1983 to 1988 and manager-refinery east, Lake Charles refinery from 1982 to 1983. Mr. Funk received his B.S. in Chemical Engineering from the University of Kansas.

Nicholas J. Rutigliano has served as a member of the board of directors of our general partner since January 26, 2006. Mr. Rutigliano has served as President of Tobias Insurance Group, Inc., a commercial insurance brokerage business he founded, since 1973. He has also served as a trustee of The Heritage Group from 1980 to the present. Mr. Rutigiliano received his B.S. in Business from the University of Evansville. He is also the brother-in-law of the chairman of the board of directors of our general partner, Mr. Fred M. Fehsenfeld, Jr.

Michael L. Smith has served as a member of the board of directors of our general partner since January 26, 2006. Mr. Smith servers as the "audit committee financial expert" on the audit committee of the board of directors of our general partner. Mr. Smith served as executive vice president and chief financial officer of Wellpoint Inc. (f/k/a Anthem Inc.), a publicly traded health benefits company, from 1999 until his retirement in January 2005. Mr. Smith previously served as senior vice president of Anthem and chief financial officer of Anthem Blue Cross and Blue Shield's Midwest and Connecticut operations from 1998 to 1999. From 1996 to 1998, he was chief operating officer and chief financial officer of American Health Network, a former Anthem subsidiary. Mr. Smith is a member of the Board of Directors of First Indiana Corporation and its principal subsidiary, First Indiana Bank, Kite Realty Group Trust, InterMune Inc. and Emergency Medical Services Corporation. He also serves as on the Board of Trustees of DePauw University. Mr. Smith received his B.A. in Economics from DePauw University.