40 CFR Appendix I to Part 204: Appendix I to Part 204

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 number Rejection number

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 batches Cumulative number batches Sequence inspection criteria

Acceptance number Rejection number

A 2 2 1 (1)

2 4 2 4

2 6 3 5

2 8 4 5

B 2 2 0 (1)

2 4 1 4

2 6 2 5

2 8 3 5

2 10 4 6

2 12 5 6

C 2 2 (2) 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 rejection not permitted for this number of batches.

2 Batch sequence acceptance not permitted for this number of batches.

Table IV—Recommended Format for Portable Air Compressor Noise Data Sheet

Test report number:

Subject:

Manufacturer: Model: Serial No.:

Rated speed: Rpm: Rated capacity: cfm (m3/in).

Configuration identification: Category identification:

Portable air compressor identification No.: Build date:

Test conditions:

Manufacturer's test site identification and location:

Reflecting plane composition:

Operating speed as tested:

Beginning of test rpm

End of test rpm

Air pressure supplied: psi (kg/cm2) Ambient wind speed______mph (km/hr)

Actual flow rate: cfm (m3/min.) Atmospheric pressure______psi (kg/cm2)

Temperature: °F (°C)

Instrumentation:

Microphone Manufacturer: Model No.: Serial No.:

Sound Level Meter Manufacturer: Model No.: Serial No.:

Calibrator Manufacturer: Model No.: Serial No.:

Other and Manufacturer: Model No.: Serial No.:

Data:

Sound levels (decibels) Background sound level at location 1 (decibels) Location

1 2 3 4 5 Average sound level (decibels)

A-Weighted

Tested by: Date:

Reported by: Date:

Supervisory personnel: Title:

Title: