[Code of Federal Regulations]
[Title 40, Volume 8]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR61.163]

[Page 129-130]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
--Table of Contents
 
  Subpart N_National Emission Standard for Inorganic Arsenic Emissions 
                     From Glass Manufacturing Plants
 
Sec. 61.163  Emission monitoring.

    (a) An owner or operator of a glass melting furnace subject to the 
emission limit in Sec. 61.162(a)(2) or Sec. 61.162(b)(2) shall:
    (1) Install, calibrate, maintain, and operate a continuous 
monitoring system for the measurement of the opacity of emissions 
discharged into the atmosphere from the control device; and
    (2) Install, calibrate, maintain, and operate a monitoring device 
for the continuous measurement of the temperature of the gas entering 
the control device.
    (b) All continuous monitoring systems and monitoring devices shall 
be installed and operational prior to performance of an emission test 
required by Sec. 61.164(a). Verification of operational status shall, 
at a minimum, consist of an evaluation of the monitoring system in 
accordance with the requirements and procedures contained in Performance 
Specification 1 of appendix B of 40 CFR part 60.
    (c) During the emission test required in Sec. 61.164(a) each owner 
or operator subject to paragraph (a) of this section shall:
    (1) Conduct continuous opacity monitoring from the beginning of the 
first test run until the completion of the third test run. Process and 
control equipment shall be operated in a manner that will minimize 
opacity of emissions, subject to the Administrator's approval.
    (2) Calculate 6-minute opacity averages from 24 or more data points 
equally spaced over each 6-minute period during the test runs.
    (3) Determine, based on the 6-minute opacity averages, the opacity 
value corresponding to the 99 percent upper confidence level of a normal 
or log-normal (whichever the owner or operator determines is more 
representative) distribution of the average opacity values.
    (4) Conduct continuous monitoring of the temperature of the gas 
entering the control device from the beginning of the first test run 
until completion of the third test run.
    (5) Calculate 15-minute averages of the temperature of the gas 
entering the control device during each test run.
    (d) An owner or operator may redetermine the values described in 
paragraph (c) of this section during any emission test that demonstrates 
compliance with the emission limits in Sec. 61.162(a)(2) or Sec. 
61.162(b)(2).
    (e) The requirements of Sec. 60.13(d) and Sec. 60.13(f) shall 
apply to an owner or operator subject to paragraph (a) of this section.
    (f) Except for system breakdowns, repairs, calibration checks, and 
zero and span adjustments required under Sec. 60.13(d), all continuous 
monitoring systems shall be in continuous operation and shall meet 
minimum frequency of operation requirements by completing a minimum of 
one cycle of sampling and analyzing for each successive 10-second period 
and one cycle of data recording for each successive 6-minute period.
    (g) An owner or operator subject to paragraph (a) of this section 
shall:
    (1) Reduce all opacity data to 6-minute averages. Six-minute 
averages shall be calculated from 24 or more data points equally spaced 
over each 6-minute period. Data recorded during periods of monitoring 
system breakdowns, repairs, calibration checks, and zero and span 
adjustments shall not be included in the data averages calculated under 
this paragraph, and
    (2) Calculate 15-minute averages of the temperature of the gas 
entering the control device for each 15-minute operating period.
    (h) After receipt and consideration of written application, the 
Administrator may approve alternative monitoring systems for the 
measurement of one or more process or operating parameters that is or 
are demonstrated to enable

[[Page 130]]

accurate and representative monitoring of a properly operating control 
device. Upon approval of an alternative monitoring system for an 
affected source, the Administrator will specify requirements to replace 
the requirements of paragraphs (a)--(g) of this section for that system.

[51 FR 28025, Aug. 4, 1986, as amended at 64 FR 7467, Feb. 12, 1999]