[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: 40CFR58.14]

[Page 210-211]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 58--AMBIENT AIR QUALITY SURVEILLANCE--Table of Contents
 
                     Subpart B--Monitoring Criteria
 
Sec. 58.14  Special purpose monitors.

    (a) Except as specified in paragraph (b) of this section, any 
ambient air quality monitoring station other than a SLAMS or PSD station 
from which the State intends to use the data as part of a demonstration 
of attainment or nonattainment or in computing a design value for 
control purposes of the National Ambient Air Quality Standards (NAAQS) 
must meet the requirements for SLAMS as described in Sec. 58.22 and, 
after January 1, 1983, must also meet the requirements for SLAMS 
described in Sec. 58.13 and Appendices A and E of this part.
    (b) Based on the need, in transitioning to a PM2.5 
standard that newly addresses the ambient impacts of fine particles, to 
encourage a sufficiently extensive geographical deployment of 
PM2.5 monitors and thus hasten the development of an adequate 
PM2.5 ambient air quality monitoring infrastructure, 
PM2.5 NAAQS violation determinations shall not be exclusively 
made based on data produced at a population-oriented SPM site during the 
first 2 complete calendar years of its operation. However, a notice of 
NAAQS violations resulting from population-oriented SPMs shall be 
reported to EPA in the State's annual monitoring report and be 
considered by the State

[[Page 211]]

in the design of its overall SLAMS network; these population-oriented 
SPMs should be considered to become a permanent SLAMS during the annual 
network review in accordance with Sec. 58.25.
    (c) Any ambient air quality monitoring station other than a SLAMS or 
PSD station from which the State intends to use the data for SIP-related 
functions other than as described in paragraph (a) of this section is 
not necessarily required to comply with the requirements for a SLAMS 
station under paragraph (a) of this section but must be operated in 
accordance with a monitoring schedule, methodology, quality assurance 
procedures, and probe or instrument-siting specifications approved by 
the Regional Administrator.

[62 FR 38832, July 18, 1997]