EXHIBIT 4 (c) TENTH AMENDMENT TO LOAN AGREEMENT THIS TENTH AMENDMENT TO LOAN AGREEMENT (this "Tenth Amendment") is made and entered into as of the 17th day of March, 2003, by and among SERVICE TRANSPORT COMPANY, a Texas corporation ("Service Transport...Loan Agreement • March 28th, 2003 • Adams Resources & Energy Inc • Wholesale-petroleum & petroleum products (no bulk stations) • Texas
