EXHIBIT 16.1 [Arthur Andersen LLP Letterhead] May 2, 2002 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Dear Sir or Madam: We have read the second and third paragraphs of Item 4 included in the Current Report on Form 8-K dated May 2, 2002, of Genesis Energy, L.P. to be filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, /s/ Arthur Andersen LLP Arthur Andersen LLP Copy to: Ross A. Benavides, Genesis Energy, L.P.