EX-32.2 6 form10k_exhibit32-2.htm EXHIBIT 32.2
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 Annual Report of Natural Gas Services Group, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Earl R. Wait, Vice President - Accounting (Principal Accounting 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.

Date: March 2, 2009 |  | Natural Gas Services Group, Inc.
| By: | /s/ Earl R. Wait |
|  | Earl R. Wait
|  | Vice President of Accounting (Principal Accounting Officer) and Treasurer