Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 5 - STATE AIR POLLUTION CONTROL BOARD › Chapter 50 - NEW AND MODIFIED STATIONARY SOURCES › Part I - Special Provisions › Section 9VAC5-50-40 - Monitoring

Current through Register Vol. 40, No. 24, July 15, 2024
A. Unless otherwise
				  approved by the board or specified in applicable subparts listed in
				  9VAC5-50-410, the requirements of
				  this section shall apply to all continuous monitoring systems required for
				  affected facilities in accordance with applicable subparts listed in
				  9VAC5-50-410. 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
				  prior to conducting performance tests under
				  9VAC5-50-30. Verification of
				  operational status shall, as a minimum, include completion of the
				  manufacturer's written requirements or recommendations for installation,
				  operation and calibration of the device.
C. During any performance tests required
				  under 9VAC5-50-30 or within 30 days
				  thereafter and at such other times as may be requested by the board, the owner
				  of any affected facility 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. These continuous
				  monitoring system performance evaluations shall be conducted in accordance with
				  the requirements and procedures contained in the applicable performance
				  specification of Appendix B of 40 CFR Part 60.
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,
				  40 CFR
				  60.13 and the applicable subpart listed in
				  9VAC5-50-410.
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 affected facility 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 that installation at alternate locations will enable accurate and
				  representative measurements.
5.
				  Alternative methods of converting pollutant concentration measurements to units
				  of the applicable standards.
6.
				  Alternative procedures for performing daily checks or zero and span drift that
				  do not involve use of span gases or test cells.
7. Alternatives to the ASTM test methods or
				  sampling procedures specified by any subpart listed in
				  9VAC5-50-410.
8. 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 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 demonstration be performed for each affected facility.
9. Alternative monitoring requirements when
				  the effluent from a single affected facility or the combined effluent from two
				  or more affected facilities are released to the atmosphere through more than
				  one point.
10. 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.