9VAC5-91-160. Exhaust emission standards for two-speed idle testing in enhanced emissions inspection programs

Emission Standards for Motor Vehicle Air Pollution A. No motor vehicle subject to the two-speed idle test shall discharge carbon monoxide (CO), or hydrocarbons (HC) in its exhaust emissions in excess of standards set forth in Table III-A when measured with a certified analyzer system and in accordance with the two-speed idle inspection procedures prescribed in Part VI ( 9VAC5-91-410 et seq.). B. The measured concentration of CO plus CO 2 shall be greater than or equal to 6.0%. C. The standards in Table III-A may be adjusted by no more than one percentage point for CO and 150 ppm for HC in order to meet the requirements of the Environmental Protection Agency or the federal Clean Air Act. TABLE III-A. TABLE III-A. EXHAUST EMISSION STANDARDS FOR TWO-SPEED IDLE EMISSIONS INSPECTIONS TESTS. EXHAUST EMISSION STANDARDS FOR TWO-SPEED IDLE EMISSIONS INSPECTIONS TESTS. Model Year HC (ppm) CO (%) Model Year HC (ppm) CO (%) For idle test and 2500 RPM test for vehicles up to 8500 pounds GVWR: For idle test and 2500 RPM test for vehicles up to 8500 pounds GVWR: 1996 & later 110 0.75 1996 & later 110 0.75 1990-95 125 1.0 1990-95 125 1.0 1981-89 220 1.2 1981-89 220 1.2 1980 220 2.0 1980 220 2.0 1975-79 400 4.0 1975-79 400 4.0 1970‑74 600 6.0 1970‑74 600 6.0 1968‑69 800 8.0 1968‑69 800 8.0 For vehicles from 8501 to 10000 pounds GVWR: For vehicles from 8501 to 10000 pounds GVWR: 1997 & later 125 0.75 1997 & later 125 0.75 1991-96 150 1.0 1991-96 150 1.0 1981-90 220 1.2 1981-90 220 1.2 1980 220 2.0 1980 220 2.0 1975-79 400 4.0 1975-79 400 4.0 1970-74 600 6.0 1970-74 600 6.0 1968-69 800 8.0 1968-69 800 8.0