40 CFR Appendix I to Subpart B of Part 205: Appendix I to Subpart B of Part 205

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)