EXHIBIT 3.9 CERTIFICATE OF LIMITED PARTNERSHIP OF PLAINS SCURLOCK PERMIAN, L.P. The undersigned represents that it has formed a limited partnership pursuant to the Delaware Revised Uniform Limited Partnership Act (the "Act") and that the undersigned has executed this Certificate in compliance with the requirements of the Act. The undersigned further states: 1. The name of the limited partnership is PLAINS SCURLOCK PERMIAN, L.P. (the "Partnership"). 2. The address of the registered office of the Partnership in the State of Delaware and the name and address of the registered agent of the Partnership required to be maintained by Section 17-104 of the Act at such address are as follows: Name and Address of Registered Agent Address of Registered Office ------------------------------- ---------------------------- Corporation Service Company 1013 Centre Road 1013 Centre Road Wilmington, DE 19805-1297 Wilmington, Delaware 19805-1297 3. The name and business address of the General Partner is as follows: General Partner Address ------------------------ --------------------- Plains All American Inc. 500 Dallas, Suite 700 Houston, Texas 77002 WHEREFORE, the undersigned has executed this Certificate as of the 29th day of April, 1999. PLAINS ALL AMERICAN INC. as General Partner By: /s/ Michael R. Patterson ------------------------------- Name: Michael R. Patterson Title: Senior Vice President