Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 5 - STATE AIR POLLUTION CONTROL BOARD › Chapter 40 - EXISTING STATIONARY SOURCES › Part I - Special Provisions › Section 9VAC5-40-40 - Monitoring

Current through Register Vol. 40, No. 24, July 15, 2024
A. Unless otherwise
				  approved by the board, owners of existing sources specified in the applicable
				  emission standard shall install, calibrate, maintain and operate systems for
				  continuously monitoring and recording emissions of specified pollutants.
				  However, nothing in this chapter shall exempt any owner from complying with
				  subsection F of this section.
B.
				  All continuous monitoring systems and monitoring devices shall be installed and
				  operational by July 5, 1983. Verification of operational status shall, as a
				  minimum, consist of the completion of the conditioning period specified by
				  applicable requirements in Appendix B of 40 CFR Part 60.
C. Within 30 days after the date set forth in
				  subsection B of this section and at such other times as may be requested by the
				  board, the owner of any existing source shall conduct continuous monitoring
				  system performance evaluations and furnish the board within 60 days of them two
				  or, upon request, more copies of a written report of the results of such
				  tests.
D. Unless otherwise approved
				  by the board, all continuous monitoring systems required by subsection A of
				  this section shall be installed, calibrated, maintained and operated in
				  accordance with applicable requirements in this section,
				  9VAC5-40-41, and the applicable
				  emission standard.
E. After receipt
				  and consideration of written application, the board may approve alternatives to
				  any monitoring procedures or requirements of this chapter including, but not
				  limited to, the following:
1. Alternative
				  monitoring requirements when installation of a continuous monitoring system or
				  monitoring device specified by this chapter would not provide accurate
				  measurements due to liquid water or other interferences caused by substances
				  within the effluent gases.
2.
				  Alternative monitoring requirements when the source is infrequently
				  operated.
3. Alternative monitoring
				  requirements to accommodate continuous monitoring systems that require
				  additional measurements to correct for stack moisture conditions.
4. Alternative locations for installing
				  continuous monitoring systems or monitoring devices when the owner can
				  demonstrate the installation at alternate locations will enable accurate and
				  representative measurements.
5.
				  Alternative methods of converting pollutant concentration measurements to units
				  of the standards.
6. Alternative
				  procedures for computing emission averages that do not require integration of
				  data (e.g., some facilities may demonstrate that the variability of their
				  emissions is sufficiently small to allow accurate reduction of data based upon
				  computing averages from equally spaced data points over the averaging
				  period).
7. Alternative monitoring
				  requirements when the effluent from a single source or the combined effluent
				  from two or more sources are released to the atmosphere through more than one
				  point.
8. Alternative procedures
				  for performing calibration checks.
9. Alternative monitoring requirements when
				  the requirements of this section would impose an extreme economic burden on the
				  owner.
10. Alternative monitoring
				  requirements when the continuous monitoring systems cannot be installed due to
				  physical limitations at the source.
11. Alternative continuous monitoring systems
				  that do not meet the design or performance requirements in Performance
				  Specification 1 of Appendix B of 40 CFR Part 60, but which adequately
				  demonstrate a definite and consistent relationship between its measurements and
				  the measurements of opacity by a system complying with the requirements in
				  Performance Specification 1 of Appendix B of 40 CFR Part 60. The board may
				  require that such demonstration be performed for each source.
12. Alternative monitoring systems that meet
				  the requirements of 40 CFR Part 75(i) if a source is subject to 40 CFR Part 75
				  or (ii) if the board determines that the requirements of 40 CFR Part 75 are
				  more appropriate for the source than the pertinent provisions of this
				  chapter.