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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 91. Regulations for the Control of Motor Vehicle Emissions in the Northern Virginia Area
12/31/2024

9VAC5-91-330. Analyzer system operation.

Emissions inspections stations shall be equipped with a dynamometer and a functional analyzer system certified in accordance with Part X (9VAC5-91-640 et seq.) and maintained and operated in accordance with the following:

1. Emissions inspection stations shall supply and maintain a functional dynamometer in such a manner that will permit the proper operation in accordance with the requirements of the manufacturer, this chapter, applicable statutes, and any procedures developed by the department.

2. The exhaust gas analyzer shall be gas spanned and leak checked according to 40 CFR Part 51, Appendix A to Subpart S or other procedure as approved by the department.

3. No additions or modifications shall be made to the analyzer system unless approved by the analyzer system manufacturer and the department.

a. All repairs to the analyzer system must be performed by an authorized manufacturer representative according to 9VAC5-91-670 B and C or a program coordinator in accordance with 9VAC5-91-675 as applicable.

b. No analyzer system replacement parts shall be used that are not original equipment replacement, or equivalent, as approved by the department.

4. No person shall tamper with or circumvent any system or function of the analyzer.

5. Emissions inspection stations shall be responsible for preventing any tampering with or unauthorized use of the dynamometer and the analyzer or their functions.

6. Analyzer system lockout conditions shall be removed only by authorized service or department personnel.

7. The analyzer system shall be capable of electronically transmitting to and receiving data from the department computer network related to the administration of the Virginia Vehicle Emissions Control Program.

Statutory Authority

§ 46.2-1180 of the Code of Virginia; § 182 of the Clean Air Act; 40 CFR Part 51, Subpart S.

Historical Notes

Derived from Virginia Register Volume 13, Issue 5, eff. January 24, 1997; amended, Virginia Register Volume 18, Issue 20, eff. October 1, 2002; Volume 29, Issue 24, eff. August 28, 2013.

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