[Code of Federal Regulations]
[Title 40, Volume 22]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR204.57-2]

[Page 95-96]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 204--NOISE EMISSION STANDARDS FOR CONSTRUCTION EQUIPMENT--Table of Contents
 
                   Subpart B--Portable Air Compressors
 
Sec. 204.57-2  Test compressor sample selection.

    (a) Compressors comprising the batch sample which are required to be 
tested pursuant to a test request in accordance with this subpart will 
be randomly selected from a batch of compressors of the category or 
configuration specified in the test request. The random selection will 
be achieved by sequentially numbering all of the compressors in the 
batch and then using a table of random numbers to select the number of 
compressors, as specified in paragraph (c) of this section, based on the 
batch size designated by the Administrator in the test request. An 
alternative selection plan may be used by a manufacturer: Provided, That 
such a plan is approved by the Administrator.
    (b) The Acceptable Quality Level is 10 percent. The appropriate 
sampling plans associated with the designated AQL are contained in 
Appendix I, Table II.
    (c) The appropriate batch sample size will be determined by 
reference to Appendix I, Tables I and II. A code letter is obtained from 
Table I based on the batch size designated by the Administrator in a 
test request. The batch sample size will be equal to the maximum 
cumulative sample size as listed in Table II for the appropriate code 
letter obtained from Table I plus an additional ten percent rounded off 
to the next highest number.
    (d) Individual compressors comprising the test sample will be 
randomly selected from the batch sample using the same random selection 
plan as in paragraph (a) of this section. Test sample size will be 
determined by entering Table II.
    (e) The test compressor of the category or configuration selected 
for testing shall have been assembled by the manufacturer for 
distribution in commerce using the manufacturers normal production 
process.
    (f) Unless otherwise indicated in the test request, the manufacturer 
will select the batch sample from the production batch next scheduled 
after receipt of the test request of the category or configuration 
specified in the test request.
    (g) Unless otherwise indicated in the test request, the manufacturer 
shall select the compressors designated in the test request for testing.
    (h) At their discretion, EPA Enforcement Officers, rather than the 
manufacturer, may select the compressors designated in the test request.

[[Page 96]]

    (i) The manufacturer will keep on hand all compressors in the batch 
sample until such time as the batch is accepted or rejected in 
accordance with Sec. 204.57-6; Except, that compressors actually tested 
and found to be in conformance with these regulations need not be kept.