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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
9/23/2020

9VAC5-91-790. Asm Start-Up Standards.

Part XIV

ASM Exhaust Emission Standards

The following standards shall apply upon implementation of the emissions inspection program. The exhaust emissions standards for the following model years are cross-referenced by using the number in the column in Table 14.1 to locate the column that lists the appropriate standards in the look up tables in 9VAC5-91-810. Each column reference below corresponds to two columns, one for the ASM 5015 and one for the ASM 2525, in 9VAC5-91-810. The test standards are then listed in the appropriate column according to the Equivalent Test Weight.

TABLE 14.1

Light Duty Vehicles.

Model Years

Hydrocarbons
9VAC5-91-810 A

Carbon Monoxide
9VAC5-91-810 B

Oxides of Nitrogen
9VAC5-91-810 C

1996 and later

1

21

41

1991‑1995

2

22

42

1983‑1990

4

23

43

1981‑1982

4

26

43

1980

4

26

48

1977‑1979

11

30

48

1975‑1976

11

30

50

1973‑1974

13

34

50

1968‑1972

13

34

51

Light Duty Trucks 1 (less than 6000 pounds GVWR).

Model Years

Hydrocarbons
9VAC5-91-810 A

Carbon Monoxide
9VAC5-91-810 B

Oxides of Nitrogen
9VAC5-91-810 C

1996 and later

(≤ 3750 LVW)

1

21

41

(> 3750 LVW)

2

22

42

1991‑1995

5

26

43

1988‑1990

7

29

44

1984‑1987

7

29

49

1979‑1983

11

31

49

1975‑1978

12

32

50

Light Duty Trucks 2 (greater than 6000 pounds GVWR).

Model Years

Hydrocarbons
9VAC5-91-810 A

Carbon Monoxide
9VAC5-91-810 B

Oxides of Nitrogen
9VAC5-91-810 C

1997 and later

(≤ 5750 LVW)

2

22

42

(> 5750 LVW)

5

26

45

1991‑ 1996

5

26

46

1988‑1990

7

29

47

1984‑1987

7

29

49

1979‑1983

11

31

49

1975‑1978

12

32

50

 

Statutory Authority

§ 46.2-1180 of the Code of Virginia.

Historical Notes

Derived from Volume 13, Issue 05, eff. January 24, 1997; amended, Virginia Register Volume 18, Issue 20, eff. October 1, 2002.

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