EXHIBIT 10.18 AMENDMENT NO. 1 TO SEVERANCE AGREEMENT (This Amendment was signed in its final form by Stephen C. Muther and Steven C. Ramsey.) This Amendment No. 1 (this "Amendment") to the Severance Agreement (the "Severance Agreement"), dated as of...Severance Agreement • March 22nd, 2000 • Buckeye Partners L P • Pipe lines (no natural gas) • Delaware
