40 C.F.R. Appendix XII to Part 86
Tables for Production Compliance Auditing of Heavy-Duty Engines and Heavy-Duty Vehicles, Including Light-Duty Trucks
Cite as 40 C.F.R. Appendix XII to Part 86 (2026)
Table 1—Compliance Level Determination Using the Primary PCA Sampling Plan Compliance level 2 PCA test sample size. 1 24 15 25 15 26 16 27 17 28 17 29 18 30 18 31 19 32 20 33 20 34 21 35 21 36 22 37 23 38 23 39 24 40 24 41 25 42 26 43 26 44 27 45 27 46 28 47 29 48 29 49 30 50 30 51 31 52 32 53 32 54 33 55 33 56 34 57 35 58 35 59 36 60 36 1 Including the number of SEA tests if applicable. 2 Is the test result of the sequence number: (The lowest test result is sequence No. 1). Table 2—Values of K for the Reduced Fixed PCA Sampling Plan Value of K Sample size: 3 1.602 4 1.114 5 0.895 6 0.764 7 0.674 8 0.608 9 0.555 10 0.513 11 0.478 12 0.448 13 0.422 14 0.399 15 0.379 16 0.360 17 0.343 18 0.328 19 0.314 20 0.301 21 0.289 22 0.277 23 0.266 Table 3—Values of K for the Reduced Sequential PCA Sampling Plan Value of K Sample size: 4 1.671 8 0.912 12 0.672 16 0.540 20 0.451 [50 FR 35401, Aug. 30, 1985]