EXHIBIT 32.2
CERTIFICATION PURSUANT TO
18 U.S.C. §1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of Natural Gas Services Group, Inc. (the “Company”) on Form 10-QSB for the period ended June 30, 2005, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Earl R. Wait, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §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 |
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| | 2. | | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. |
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| | /s/Earl R. Wait | |
| | Earl R. Wait | |
| | Chief Financial Officer
August 11, 2005 | |
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