EX-32.2 5 exhibit_32-2.htm CERTIFICATION OF CFO SECTION 906

exhibit_32-2.htm

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-Q for the period ended March 31, 2007, 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

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

	Natural Gas Services Group, Inc.
Date:  May 9, 2007	By:	/s/ Earl R. Wait
		Earl R. Wait
		Principal Accounting Officer and Treasurer