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 › Part III - Emission Standards for Motor Vehicle Air Pollution › Section 9VAC5-91-180 - On-road high emitter emissions standards for on-road testing through remote sensing

Current through Register Vol. 40, No. 24, July 15, 2024
A. No
				  affected motor vehicle shall exceed the on-road high emitter emissions
				  standards for carbon monoxide (CO), hydrocarbons (HC), or nitric oxide (NO)
				  when measured with a remote sensing device and in accordance with the
				  inspection procedures prescribed in Part XII (9VAC5-91-740 et seq.).
B. The on-road high emitter emissions
				  standards for a vehicle shall be determined by multiplying the value in the
				  Table III-B of
				  9VAC5-91-180 by the ASM 25-25
				  standard in
				  9VAC5-91-810 or two speed idle
				  standard in Table III-A of
				  9VAC5-91-160 as is applicable for
				  the vehicle.
C. Any affected motor
				  vehicle determined to have exceeded any on-road high emitter emissions
				  standards when measured by a remote sensing device in accordance with the
				  procedures of Part XII (9VAC5-91-740 et seq.)
				  may be subject to an emissions inspection at an emissions inspection station in
				  accordance with Part XII (9VAC5-91-740 et seq.)
				  or a civil charge in accordance with § 46.2-1178.1B of the Code of
				  Virginia, or both.
D. Any affected
				  motor vehicle that exceeds the on-road high emitter emissions standards two
				  days in any 120-day period shall be considered to have violated the emissions
				  standards. In addition, the department may use the vehicle emissions index as a
				  screening requirement.
E. Any
				  affected motor vehicle that exceeds the on-road high emitter emissions
				  standards once and is also determined to have a vehicle emissions index of
				  greater than 75 shall be considered to have violated the on-road high emitter
				  emissions standards.
F. All remote
				  sensing measurements used to determine if a vehicle exceeds the on-road high
				  emitter emissions standards shall be taken at valid sites under conditions at
				  which the vehicle specific power (VSP) indicator is between 3 and 22. Standards
				  for NO shall be corrected for VSP using the following formula:
NO standard = Low Range Value + (VSP-3)/
19 x (High Range Value - Low Range Value).
Where:
Low Range Value = the smaller values in Table III-B in the
					 NO (ppm) Range column;
VSP = vehicle specific power indicator; and
High Range Value = the larger values in Table III-B in the
					 NO (ppm) Range column.
G. The director
				  may adjust the values in Table III-B if it is determined that an on-road high
				  emitter emissions standard is causing a confirmation test pass rate in excess
				  of 20% or less than 5.0%. Such adjustments may be for specific models within
				  each model year group based on manufacturer's emissions control technology.
TABLE III-B.
HIGH EMITTER VALUES FOR REMOTE SENSING
One or More On-Road Measurements ASM Based
							 Vehicle Must Have a Vehicle Emissions Index of 75% or Higher
Period/Model Year/Vehicle Type
CO
HC
NO Range(1)
Low
High
1981 through 1990 - LDGT (1 or 2)
4.0
5.0
2.5
3.3
1981 through 1990 - LDGV
12.0
4.5
1.5
2.0
1991 through 1995 - LDGT (1 or 2)
4.0
5.0
2.5
3.3
1991 through 1995 - LDGV
8.0
6.0
1.5
2.0
1996 and newer - LDGT (1 or 2)
7.0
4.5
2.5
3.3
1996 and newer - LDGV
9.0
6.0
2.2
2.9
Two or More On-Road Measurements ASM Based
Period/Model Year/Vehicle Type
CO
HC
NO Range(1)
Low
High
1981 through 1990 - LDGT (1 or 2)
3.0
3.8
2.1
2.8
1981 through 1990 - LDGV
9.0
3.4
1.3
1.7
1991 through 1995 - LDGT (1 or 2)
3.0
3.8
2.1
2.8
1991 through 1995 - LDGV
6.0
4.5
1.3
3.3
1996 and newer LDGT (1 or 2)
5.3
3.4
2.1
2.8
1996 and newer LDGV
6.8
4.5
1.9
2.5
One or More On-Road Measurements TSI Based
							 Vehicle Must Have a Vehicle Emissions Index of 75% or Higher
Period/Model Year/Vehicle Type
CO
HC
NO Range(1)
Low
High
1968 through 1980- LDGT (1 or 2)
2.0
1.5
1968 through 1980 - LDGV
2.0
1.5
1968 through 1980 - HDGV
2.0
1.5
1981 through 1990 - LDGT (1 or 2)
3.0
3.5
1981 through 1990 - LDGV
3.0
3.5
1981 through 1990 - HDGV
3.0
3.5
1991 through 1995 - LDGT (1 or 2)
3.0
4.0
1991 through 1995 - LDGV
3.0
4.0
1991 through 1995 - HDGV
3.0
4.0
1996 and newer - LDGT (1 or 2)
4.0
4.0
1996 and newer - LDGV
4.0
4.0
1996 and newer - HDGV
4.0
4.0
Two or More On-Road Measurements TSI Based
Period/Model Year/Vehicle Type
CO
HC
NO Range(1)
Low
High
1968 through 1980- LDGT (1 or 2)
1.5
1.1
1968 through 1980 - LDGV
1.5
1.1
1968 through 1980 - HDGV
1.5
1.1
1981 through 1990 - LDGT (1 or 2)
2.3
2.6
1981 through 1990 - LDGV
2.3
2.6
1981 through 1990 - HDGV
2.3
2.6
1991 through 1995 - LDGT (1 or 2)
2.3
3.0
1991 through 1995 - LDGV
2.3
3.0
1991 through 1995 - HDGV
2.3
3.0
1996 and newer - LDGT (1 or 2)
3.0
3.0
1996 and newer - LDGV
3.0
3.0
1996 and newer - HDGV
3.0
3.0
1NO Value = Low Range Value +
							 (Actual VSP-3)/19 x (High Range Value - Low Range Value)
Statutory Authority
§ 46.2-1180 of the Code of Virginia; § 182 of
						the federal Clean Air Act; 40 CFR Part 51, Subpart S.