[Code of Federal Regulations]
[Title 40, Volume 5]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR53.3]

[Page 8-9]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 53--AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS--Table of Contents
 
                      Subpart A--General Provisions
 
Sec. 53.3   General requirements for an equivalent method determination.

    (a) Manual methods. A manual equivalent method must have been shown 
in accordance with this part to satisfy the applicable requirements 
specified in subpart C of this part. In addition, PM10 or 
PM2.5 samplers associated with manual equivalent methods for 
PM10 or PM2.5 must have been shown in accordance 
with this part to satisfy the following additional requirements:
    (1) A PM10 sampler associated with a manual method for 
PM10 must satisfy the requirements of subpart D of this part.
    (2) A PM2.5 Class I equivalent method sampler must 
satisfy all requirements of subparts C and E of this part, which include 
appropriate demonstration that each and every deviation or modification 
from the reference method sampler specifications does not significantly 
alter the performance of the sampler.
    (3) A PM2.5 Class II equivalent method sampler must 
satisfy the applicable requirements of subparts C, E, and F of this 
part.
    (4) Requirements for PM2.5 Class III equivalent method 
samplers are not provided in this part because of the wide range of non-
filter-based measurement technologies that could be applied and the 
likelihood that these requirements will have to be specifically adapted 
for each such type of technology. Specific requirements will be 
developed as needed and may include selected requirements from subparts 
C, E, or F of this part or other requirements not contained in this 
part.
    (5) All designated equivalent methods for PM2.5 must be 
manufactured in an ISO 9001-registered facility, as defined in Sec. 53.1 
and as set forth in Sec. 53.51, and the Product Manufacturing Checklist 
set forth in subpart E of this part must be completed by an ISO-
certified auditor, as defined in Sec. 53.1, and submitted to EPA 
annually to retain a PM2.5 equivalent method designation.
    (b) Automated methods. (1) Automated equivalent methods for 
pollutants other than PM2.5 or PM10 must have been 
shown in accordance with this part to satisfy the requirements specified 
in subparts B and C of this part.
    (2) Automated equivalent methods for PM10 must have been 
shown in accordance with this part to satisfy the requirements of 
subparts C and D of this part.
    (3) Requirements for PM2.5 Class III automated equivalent 
methods for

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PM2.5 are not provided in this part because of the wide range 
of non-filter-based measurement technologies that could be applied and 
the likelihood that these requirements will have to be specifically 
adapted for each such type of technology. Specific requirements will be 
developed as needed and may include selected requirements from subparts 
C, E, or F of this part or other requirements not contained in this 
part.
    (4) All designated equivalent methods for PM2.5 must be 
manufactured in an ISO 9001-registered facility, as set forth in subpart 
E of this part, and the Product Manufacturing Checklist set forth in 
subpart E of this part must be completed by an ISO-certified auditor and 
submitted to EPA annually to retain a PM2.5 equivalent method 
designation.

[62 FR 38784, July 18, 1997; 63 FR 7714, Feb. 17, 1998]