EXHIBIT 4.13 AMENDMENT TO THE CORPORATEPLAN FOR RETIREMENT SERVICE AGREEMENT - MUTUAL FUND WINDOWS WHEREAS, Giant Industries, Inc. (the "Employer") and Fidelity Management Trust Company as the trustee ("Trustee") executed the Fidelity CORPORATEplan...Corporate Plan for Retirement Service Agreement • April 2nd, 2003 • Giant Industries Inc • Petroleum refining
