Code of Federal Regulations > Title 40 > Chapter I > Part 204 > Subpart B > Appendix Appendix I

Regulations last checked for updates: Nov 23, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024

Appendix Appendix I - Appendix I to Part 204

Table I—Sample Size Code Letters

Table II—Sampling Plans for Inspecting Batches

Sample size code letter	Test sample	Test sample size	Cumulative test sample size	Batch inspection criteria
Sample size code letter	Test sample	Test sample size	Cumulative test sample size	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
Sample size code letter	Number batches	Cumulative number batches	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 (m ³/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/cm ²)	Ambient wind speed______mph (km/hr)
Actual flow rate:	cfm (m ³/min.)	Atmospheric pressure______psi (kg/cm ²)
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
Sound levels (decibels)	Background sound level at location 1 (decibels)	1	2	3	4	5	Average sound level (decibels)
A-Weighted
Tested by:						Date:
Reported by:						Date:
Supervisory personnel:					Title:
					Title:

authority: (42 U.S.C. 4905), 86 Stat. 1237

source: 41 FR 2172, Jan. 14, 1976, unless otherwise noted.