40 CFR Appendix A to Subpart E of Part 1068
Plans for Selective Enforcement Auditing
June 9, 2020
The following tables describe sampling plans for selective enforcement audits, as described in §1068.420:
Table A-1—Sampling Plan Code Letter
Open Table
| Projected family sales | Code letter1 | Minimum number of tests | Maximum number of tests | |
|---|---|---|---|---|
| To pass | To fail | |||
| 20-50 | AA | 3 | 5 | 20 |
| 20-99 | A | 4 | 6 | 30 |
| 100-299 | B | 5 | 6 | 40 |
| 300-499 | C | 5 | 6 | 50 |
| 500 + | D | 5 | 6 | 60 |
1A manufacturer may optionally use either the sampling plan for code letter “AA” or sampling plan for code letter “A” for Selective Enforcement Audits of families with annual sales between 20 and 50 engines/equipment. Additionally, the manufacturer may switch between these plans during the audit.
Table A-2—Sampling Plans for Different Engine Family Sales Volumes
Open Table
| Stagea | AA | A | B | C | D | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pass # | Fail # | Pass # | Fail # | Pass # | Fail # | Pass # | Fail # | Pass # | Fail # | |
| 1 | ||||||||||
| 2 | ||||||||||
| 3 | 0 | |||||||||
| 4 | 0 | 0 | ||||||||
| 5 | 1 | 5 | 0 | 0 | 0 | 0 | ||||
| 6 | 1 | 6 | 1 | 6 | 1 | 6 | 0 | 6 | 0 | 6 |
| 7 | 2 | 6 | 1 | 7 | 1 | 7 | 1 | 7 | 1 | 7 |
| 8 | 2 | 7 | 2 | 7 | 2 | 7 | 2 | 7 | 2 | 8 |
| 9 | 3 | 7 | 2 | 8 | 2 | 8 | 2 | 8 | 2 | 8 |
| 10 | 3 | 8 | 3 | 8 | 3 | 8 | 3 | 9 | 3 | 9 |
| 11 | 4 | 8 | 3 | 8 | 3 | 9 | 3 | 9 | 3 | 9 |
| 12 | 4 | 9 | 4 | 9 | 4 | 9 | 4 | 10 | 4 | 10 |
| 13 | 5 | 9 | 5 | 10 | 4 | 10 | 4 | 10 | 4 | 10 |
| 14 | 5 | 10 | 5 | 10 | 5 | 10 | 5 | 11 | 5 | 11 |
| 15 | 6 | 10 | 6 | 11 | 5 | 11 | 5 | 11 | 5 | 11 |
| 16 | 6 | 10 | 6 | 11 | 6 | 12 | 6 | 12 | 6 | 12 |
| 17 | 7 | 10 | 7 | 12 | 6 | 12 | 6 | 12 | 6 | 12 |
| 18 | 8 | 10 | 7 | 12 | 7 | 13 | 7 | 13 | 7 | 13 |
| 19 | 8 | 10 | 8 | 13 | 8 | 13 | 7 | 13 | 7 | 13 |
| 20 | 9 | 10 | 8 | 13 | 8 | 14 | 8 | 14 | 8 | 14 |
| 21 | 9 | 14 | 9 | 14 | 8 | 14 | 8 | 14 | ||
| 22 | 10 | 14 | 9 | 15 | 9 | 15 | 9 | 15 | ||
| 23 | 10 | 15 | 10 | 15 | 10 | 15 | 9 | 15 | ||
| 24 | 11 | 15 | 10 | 16 | 10 | 16 | 10 | 16 | ||
| 25 | 11 | 16 | 11 | 16 | 11 | 16 | 11 | 16 | ||
| 26 | 12 | 16 | 11 | 17 | 11 | 17 | 11 | 17 | ||
| 27 | 12 | 17 | 12 | 17 | 12 | 17 | 12 | 17 | ||
| 28 | 13 | 17 | 12 | 18 | 12 | 18 | 12 | 18 | ||
| 29 | 14 | 17 | 13 | 18 | 13 | 18 | 13 | 19 | ||
| 30 | 16 | 17 | 13 | 19 | 13 | 19 | 13 | 19 | ||
| 31 | 14 | 19 | 14 | 19 | 14 | 20 | ||||
| 32 | 14 | 20 | 14 | 20 | 14 | 20 | ||||
| 33 | 15 | 20 | 15 | 20 | 15 | 21 | ||||
| 34 | 16 | 21 | 15 | 21 | 15 | 21 | ||||
| 35 | 16 | 21 | 16 | 21 | 16 | 22 | ||||
| 36 | 17 | 22 | 16 | 22 | 16 | 22 | ||||
| 37 | 17 | 22 | 17 | 22 | 17 | 23 | ||||
| 38 | 18 | 22 | 18 | 23 | 17 | 23 | ||||
| 39 | 18 | 22 | 18 | 23 | 18 | 24 | ||||
| 40 | 21 | 22 | 19 | 24 | 18 | 24 | ||||
| 41 | 19 | 24 | 19 | 25 | ||||||
| 42 | 20 | 25 | 19 | 26 | ||||||
| 43 | 20 | 25 | 20 | 26 | ||||||
| 44 | 21 | 26 | 21 | 27 | ||||||
| 45 | 21 | 27 | 21 | 27 | ||||||
| 46 | 22 | 27 | 22 | 28 | ||||||
| 47 | 22 | 27 | 22 | 28 | ||||||
| 48 | 23 | 27 | 23 | 29 | ||||||
| 49 | 23 | 27 | 23 | 29 | ||||||
| 50 | 26 | 27 | 24 | 30 | ||||||
| 51 | 24 | 30 | ||||||||
| 52 | 25 | 31 | ||||||||
| 53 | 25 | 31 | ||||||||
| 54 | 26 | 32 | ||||||||
| 55 | 26 | 32 | ||||||||
| 56 | 27 | 33 | ||||||||
| 57 | 27 | 33 | ||||||||
| 58 | 28 | 33 | ||||||||
| 59 | 28 | 33 | ||||||||
| 60 | 32 | 33 | ||||||||
aStage refers to the cumulative number of engines/equipment tested.
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