Section 40. Monitoring

A. Unless otherwise approved by the board, owners or other persons subject the provisions of an standard under this chapter shall install, calibrate, maintain, and operate systems for continuously monitoring and recording emissions of specified pollutants as specified in the applicable article of this chapter. 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 emission tests required under 9VAC5-45-30. 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 and completion of any conditioning period specified by the appropriate specification in Appendix B of 40 CFR Part 60.

C. During any emissions tests required under 9VAC5-45-30 or within 30 days thereafter and at such other times as may be requested by the board, the owner or other person subject to the requirements of subsection A of this section 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 specified in the applicable emission standard, the requirements contained in applicable procedures in 9VAC5-20-121, and the requirements and procedures equivalent to those contained in the appropriate 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 (i) applicable requirements in this section, (ii) requirements in the applicable emission standard, and (iii) requirements equivalent to those in 40 CFR 60.13.

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.

F. Upon request of the board, the owner or other person subject to the provisions of this chapter shall install, calibrate, maintain, and operate equipment for continuously monitoring and recording emissions or process parameters or both in accordance with methods and procedures acceptable to the board.

Historical Notes

Derived from Volume 26, Issue 12, eff. March 17, 2010.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.