[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: 40CFR58.23]

[Page 212-213]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 58--AMBIENT AIR QUALITY SURVEILLANCE--Table of Contents
 
       Subpart C--State and Local Air Monitoring Stations (SLAMS)
 
Sec. 58.23  Monitoring network completion.

    With the exception of the PM10 monitoring networks that 
shall be in place by March 16, 1998 and with the exception of the 
PM2.5 monitoring networks as described in paragraph (c) of 
this section:
    (a) Each station in the SLAMS network must be in operation, be sited 
in accordance with the criteria in appendix E to this part, and be 
located as described on the station's AIRS site identification form, and
    (b) The quality assurance requirements of appendix A to this part 
must be fully implemented.
    (c) Each PM2.5 station in the SLAMS network must be in 
operation in accordance with the minimum requirements of appendix D of 
this part, be sited in accordance with the criteria in appendix E of 
this part, and be located as described on the station's AIRS site 
identification form, according to the following schedule:
    (1) Within 1 year after September 16, 1997, at least one required 
core PM2.5

[[Page 213]]

SLAMS site in each MSA with population greater than 500,000, plus one 
site in each PAMS area, (plus at least two additional SLAMS sites per 
State) must be in operation.
    (2) Within 2 years after September 16, 1997, all other required 
SLAMS, including all required core SLAMS, required regional background 
and regional transport SLAMS, continuous PM monitors in areas with 
greater than 1 million population, and all additional required 
PM2.5 SLAMS must be in operation.
    (3) Within 3 years after September 16, 1997, all additional sites 
(e.g., sites classified as SLAMS/SPM to complete the mature network) 
must be in operation.

[44 FR 27571, May 10, 1979, as amended at 52 FR 24740, July 1, 1987; 59 
FR 41628, Aug. 12, 1994; 62 FR 38832, July 18, 1997]