[Code of Federal Regulations]
[Title 40, Volume 8]
[Revised as of July 1, 2002] 
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR61.34]

[Page 42-43]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
               CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY
 
PART 61--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS--Table of Contents
 
           Subpart C--National Emission Standard for Beryllium
 
Sec. 61.34  Air sampling.

    (a) Stationary sources subject to Sec. 61.32(b) shall locate air 
sampling sites in accordance with a plan approved by the Administrator. 
Such sites shall be located in such a manner as is calculated to detect 
maximum concentrations of beryllium in the ambient air.
    (b) All monitoring sites shall be operated continuously except for a 
reasonable time allowance for instrument maintenance and calibration, 
for changing filters, or for replacement of equipment needing major 
repair.
    (c) Filters shall be analyzed and concentrations calculated within 
30 days after filters are collected. Records of concentrations at all 
sampling sites and other data needed to determine

[[Page 43]]

such concentrations shall be retained at the source and made available, 
for inspection by the Administrator, for a minimum of 2 years.
    (d) Concentrations measured at all sampling sites shall be reported 
to the Administrator every 30 days by a registered letter.
    (e) The Administrator may at any time require changes in, or 
expansion of, the sampling network.