LIS

Virginia Law

Administrative Code

Creating a Report: Check the sections you'd like to appear in the report, then use the "Create Report" button at the bottom of the page to generate your report. Once the report is generated you'll then have the option to download it as a pdf, print or email the report.

Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources
11/5/2024

9VAC5-40-3210. Monitoring.

A. The provisions of 9VAC5-40-40 (Monitoring) apply.

B. Unless otherwise approved by the board, owners of existing sources specified in subsection C of this section shall install, calibrate, maintain and operate systems for continuously monitoring and recording emissions of specified pollutants.

C. Nitric acid plants of greater than 300 tons per day production capacity (the production capacity being expressed as 100% acid) shall be monitored for nitrogen oxides emissions.

D. The pollutant gas used to prepare calibration gas mixtures under paragraph 2.1, Performance Specification 2 of Appendix B of 40 CFR 60 and for calibration checks under 9VAC5-40-41 shall be nitrogen dioxide (NO2). The span shall be set at 500 ppm of nitrogen dioxide. Reference Method 7 shall be used for conducting monitoring system performance evaluations under 9VAC5-40-41.

E. The owner shall establish a conversion factor for the purpose of converting monitoring data into units of the applicable standard (lb/short ton). The conversion factor shall be established by measuring emissions with the continuous monitoring system concurrent with measuring emissions with the applicable reference method tests. Using only that portion of the continuous monitoring emission data that represents emission measurements concurrent with the reference method test periods, the conversion factor shall be determined by dividing the reference method test data average by the monitoring data averages to obtain a ratio expressed in units of the applicable standard to units of the monitoring data, i.e., lb/short ton per ppm. The conversion factor shall be reestablished during any emission test under 9VAC5-40-30 or any continuous monitoring system performance evaluation under 9VAC5-40-41. The average nitrogen oxides concentration in the flue gases shall be multiplied by the conversion factor to obtain the average nitrogen oxides emissions in the units of the applicable standard.

Statutory Authority

§§ 10.1-1307 and 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from VR120-04-2310, eff. January 1, 1985.

Website addresses provided in the Virginia Administrative Code to documents incorporated by reference are for the reader's convenience only, may not necessarily be active or current, and should not be relied upon. To ensure the information incorporated by reference is accurate, the reader is encouraged to use the source document described in the regulation.

As a service to the public, the Virginia Administrative Code is provided online by the Virginia General Assembly. We are unable to answer legal questions or respond to requests for legal advice, including application of law to specific fact. To understand and protect your legal rights, you should consult an attorney.