EXHIBIT 32.2

                   Certification of Periodic Financial Reports

I, Deborah C. DeRouen, of Omni Energy Services Corp., certify, pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)   the Quarterly Report on Form 10-Q for the quarterly period ended June 30,
      2004 (the "Periodic Report") which this statement accompanies 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 Periodic Report fairly presents, in all
      material respects, the financial condition and results of operations of
      Omni Energy Services Corp.

Dated: August 25, 2004                          /s/ Deborah C. DeRouen
                                        ------------------------------------
                                                 Deborah C. DeRouen
                                              Chief Accounting Officer
                                           (Principal Financial Officer)