40 C.F.R. § 205 app I to Subpart B of Part 205
Current through September 30, 2024
Table I-Sample Size Code Letters
| Batch size | Code letter |
| 4 to 8 | A. |
| 9 to 15 | B. |
| 16 to 25 | C. |
| 26 and larger | D. |
Table II-Sampling Plans for Inspecting Batches
| Sample size code letter | Test sample | Test sample size | Cumulative test sample size | Batch inspection criteria | |
| Acceptance No. | Rejection No. | ||||
| A | 1st | 4 | 4 | 0 | 1 |
| B | 1st | 3 | 3 | 0 | 1 |
| C | 1st | 3 | 3 | 0 | 2 |
| 2d | 3 | 6 | 1 | 2 | |
| D | 1st | 2 | 2 | (1) | 2 |
| 2d | 2 | 4 | (1) | 2 | |
| 3d | 2 | 6 | 0 | 2 | |
| 4th | 2 | 8 | 0 | 3 | |
| 5th | 2 | 10 | 1 | 3 | |
| 6th | 2 | 12 | 1 | 3 | |
| 7th | 2 | 14 | 2 | 3 | |
1 Batch acceptance not permitted at this sample size.
Table III-Batch Sequence Plans
| Sample size code letter | Number of batches | Cumulative number of batches | Sequence inspection criteria | |
| Acceptance No. | Rejection No. | |||
| A | 2 | 2 | 1 | (2) |
| 2 | 4 | 2 | 4 | |
| 2 | 6 | 3 | 5 | |
| 2 | 8 | 4 | 5 | |
| B | 2 | 2 | 0 | (2) |
| 2 | 4 | 1 | 4 | |
| 2 | 6 | 2 | 5 | |
| 2 | 8 | 3 | 5 | |
| 2 | 10 | 4 | 6 | |
| 2 | 12 | 5 | 6 | |
| C | 2 | 2 | (1) | 2 |
| 2 | 4 | 0 | 2 | |
| 2 | 6 | 0 | 3 | |
| 2 | 8 | 1 | 3 | |
| 2 | 10 | 2 | 4 | |
| 2 | 12 | 3 | 4 | |
| D | 2 | 2 | 0 | 2 |
| 2 | 4 | 1 | 3 | |
| 2 | 6 | 2 | 4 | |
| 2 | 8 | 3 | 4 | |
1 Batch sequence acceptance not permitted for this number of batches.
2 Batch sequence rejection not permitted for this number of batches.
Table IV-Recommended Format for Vehicle Noise Data Sheet
| Test Report Number: | Manufacturer: | ||
| VEHICLE: | |||
| Trade Name: | VIN: | ||
| Model Year: | Other Reference No: | ||
| Configuration Identification: | Category Identification: | ||
| Test Site Identification and Location: | |||
| INSTRUMENTATION: | |||
| Microphone Manufacturer: | Model No: | Serial No: | |
| Sound Level Manufacturer: | Model No: | Serial No: | |
| Calibrator Manufacturer: | Model No: | Serial No: | |
| Other and Manufacturer: | Model No: | Serial No: | |
| TEST DATA: | |||
| Approach Gear: | Date of Test: | ||
| Approach RPM: | Temp: | Wind: | |
| Acceleration Test: | |||
| Deceleration Test: | |||
Acceleration Test
| Run No. | ||||||
| 1 | 2 | 3 | 4 | 5 | ||
| dBA | Left | |||||
| Right | ||||||
| Highest RPM attained in End Zone | ||||||
| Calculated Sound Pressure | dBA | |||||
| Deceleration Test with Exhaust Brake Applied | ||||||
| dBA | Left | |||||
| Right | ||||||
| Calculated Sound Pressure | dBA | |||||
| TEST Personnel: | ||||||
| (Name) | ||||||
| Recorded By: | Date:......... | |||||
| (Signature) | ||||||
| Supervisor: | Title:......... | |||||
| (Signature) | ||||||
40 C.F.R. 205 app I to Subpart B of Part 205