9VAC5-91-185. Clean screen vehicle emissions standards for on-road testing

A. Clean screen vehicles shall be identified by an on-road emissions inspector using on-road testing based on all of the following criteria until the provisions of subsection B of this section become effective according to the schedule in subsection D of 9VAC5-91-740 : 1. Up to 5.0% of the number of vehicles measured during any 30-day period may be identified as clean screen vehicles. This percentage may be evaluated annually by the department and adjusted based on the amount of emissions reduction lost due to clean screening. 2. Vehicles that have the cleanest measurements based on an average of at least three measurements (taken on three different days in a 120-day time period) may be identified as clean screen vehicles. 3. Vehicles must have no measurements exceeding the on-road high emitter emissions standard within the 120-day time period as required in subdivision 2 of this subsection to be identified as clean screen vehicles. 4. Vehicles must not be equipped with an OBD system unless DEQ makes a determination to include certain OBD model years based on evidence that there would not be a significant loss in emissions reduction benefits. B. Vehicles shall be identified as clean screen vehicles by an on-road emissions inspector using on-road testing based on the following criteria: 1. The vehicle is due for an emissions inspection test within 120 days; 2. The result of the most recent initial emissions test on record with the department is not a "fail"; 3. No on-road emissions measurement since the most recent initial emissions test exceeds the on-road high emitter emissions standards as determined according to 9VAC5-91-180 B; 4. The two most recent on-road emissions measurements taken within 12 months of the registration expiration date shall not exceed the clean screen standards as determined in subsection D of this section and the vehicle must have a vehicle emissions index no greater than 80; or 5. The most recent on-road emissions measurement taken within 12 months of the registration expiration date shall not exceed the clean screen standards as determined in subsection D of this section and the vehicle shall have a vehicle emissions index no greater than 75. C. On an annual basis, at least 2.0% of the vehicles meeting the clean screen criteria in subsection B of this section shall not be notified of the clean screen and may receive an emissions test at an emissions inspection station. The department shall analyze these test results to determine the effect of on-road testing on total emissions reductions. The director may decrease the maximum vehicle emissions index specified in subdivision B 4 and 5 of this section as necessary to ensure compliance with federal requirements in accordance with 9VAC5-91-740 F. D. The clean screen vehicle standards are determined as a percentage of the values in Table III-C. The director may adjust the percentage between 50% to 80% to ensure compliance with federal requirements in accordance with 9VAC5-91-740 F. E. The director may exempt certain vehicle models with known emissions related deficiencies. F. Clean screen vehicles in accordance with subsections A and B of this section may be recorded as having passed the next emissions inspection required by § 46.2-1178 of the Code of Virginia and the result shall be entered into the emissions inspection record for that vehicle. TABLE III-C TABLE III-C On Road Clean Screen Maximum Standards On Road Clean Screen Maximum Standards Emissions Test Weight (ETW) LDGV LDGT 1 & 2 Emissions Test Weight (ETW) LDGV LDGT 1 & 2 HC(ppm) CO(%) NO (ppm) HC(ppm) CO(%) NO (ppm) HC(ppm) CO(%) NO (ppm) HC(ppm) CO(%) NO (ppm) 1750 136 0.77 1095 136 0.77 1095 1750 136 0.77 1095 136 0.77 1095 1875 129 0.73 1031 129 0.73 1031 1875 129 0.73 1031 129 0.73 1031 2000 123 0.69 973 123 0.69 973 2000 123 0.69 973 123 0.69 973 2125 116 0.66 920 116 0.66 920 2125 116 0.66 920 116 0.66 920 2250 111 0.62 871 111 0.62 871 2250 111 0.62 871 111 0.62 871 2375 106 0.59 827 106 0.59 827 2375 106 0.59 827 106 0.59 827 2500 101 0.57 786 101 0.57 786 2500 101 0.57 786 101 0.57 786 2625 97 0.54 749 97 0.54 749 2625 97 0.54 749 97 0.54 749 2750 93 0.52 715 93 0.52 715 2750 93 0.52 715 93 0.52 715 2875 89 0.50 684 89 0.50 684 2875 89 0.50 684 89 0.50 684 3000 86 0.48 656 86 0.48 656 3000 86 0.48 656 86 0.48 656 3125 83 0.46 630 83 0.46 630 3125 83 0.46 630 83 0.46 630 3250 80 0.45 607 80 0.45 607 3250 80 0.45 607 80 0.45 607 3375 78 0.43 585 78 0.43 585 3375 78 0.43 585 78 0.43 585 3500 76 0.42 566 76 0.42 566 3500 76 0.42 566 76 0.42 566 3625 74 0.41 547 75 0.41 547 3625 74 0.41 547 75 0.41 547 3750 72 0.40 531 72 0.40 531 3750 72 0.40 531 72 0.40 531 3875 70 0.39 515 91 0.50 644 3875 70 0.39 515 91 0.50 644 4000 68 0.38 501 88 0.49 626 4000 68 0.38 501 88 0.49 626 4125 67 0.37 487 87 0.48 609 4125 67 0.37 487 87 0.48 609 4250 65 0.36 475 84 0.47 594 4250 65 0.36 475 84 0.47 594 4375 64 0.35 463 83 0.46 579 4375 64 0.35 463 83 0.46 579 4500 63 0.35 451 81 0.45 564 4500 63 0.35 451 81 0.45 564 4625 61 0.34 440 79 0.44 551 4625 61 0.34 440 79 0.44 551 4750 60 0.33 430 78 0.43 538 4750 60 0.33 430 78 0.43 538 4875 59 0.33 420 76 0.43 525 4875 59 0.33 420 76 0.43 525 5000 58 0.32 410 75 0.42 513 5000 58 0.32 410 75 0.42 513 5125 57 0.31 400 74 0.41 500 5125 57 0.31 400 74 0.41 500 5250 56 0.31 391 72 0.40 489 5250 56 0.31 391 72 0.40 489 5375 55 0.30 382 71 0.39 478 5375 55 0.30 382 71 0.39 478 5500 54 0.30 373 70 0.39 466 5500 54 0.30 373 70 0.39 466 5625 53 0.30 364 68 0.38 455 5625 53 0.30 364 68 0.38 455 5750 52 0.29 356 67 0.37 445 5750 52 0.29 356 67 0.37 445 5875 51 0.28 348 66 0.36 435 5875 51 0.28 348 66 0.36 435 6000 50 0.28 340 65 0.36 425 6000 50 0.28 340 65 0.36 425 6125 49 0.27 333 64 0.35 416 6125 49 0.27 333 64 0.35 416 6250 48 0.27 326 62 0.35 408 6250 48 0.27 326 62 0.35 408 6375 48 0.26 320 62 0.34 400 6375 48 0.26 320 62 0.34 400 6500 47 0.26 315 61 0.34 394 6500 47 0.26 315 61 0.34 394 6625 46 0.26 311 60 0.34 389 6625 46 0.26 311 60 0.34 389 6750 46 0.26 307 60 0.34 384 6750 46 0.26 307 60 0.34 384 6875 46 0.25 305 60 0.33 382 6875 46 0.25 305 60 0.33 382 7000 46 0.25 305 59 0.33 381 7000 46 0.25 305 59 0.33 381 7125 46 0.25 305 59 0.33 381 7125 46 0.25 305 59 0.33 381 7250 46 0.25 305 59 0.33 381 7250 46 0.25 305 59 0.33 381 7375 46 0.25 305 59 0.33 381 7375 46 0.25 305 59 0.33 381 7500 46 0.25 305 59 0.33 381 7500 46 0.25 305 59 0.33 381