EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Duke Energy Field Services, LLC (the
"Company") on Form 10-Q for the period ending June 30, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Jim W.
Mogg, Chairman of the Board, President and Chief Executive Officer of the
Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that:

         (1) The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

         (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company.

/s/      Jim W. Mogg

Jim W. Mogg
Chairman of the Board, President and Chief Executive Officer
August 14, 2002