GroundRules
9VAC5-91-790: ASM start-up standards
Where this section sits in the 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
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
Collected 2026-09-14T04:48:43Z. Source file · JSON