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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources
12/22/2024

9VAC5-40-1770. Monitoring.

A. The provisions of 9VAC5-40-40 (Monitoring) apply, with any addition or modification deemed appropriate to meet the needs of subsection B of this section.

B. The owner of a kraft pulp mill shall by October 1, 1990:

1. Install, certify, maintain and operate continuous monitoring equipment to monitor and record the concentration of TRS emissions on a dry basis and the percentage of oxygen by volume on a dry basis in the gases discharged into the atmosphere from any lime kiln or recovery furnace. The location of each monitoring system must be approved by the board.

2. Install, calibrate, maintain, and operate a monitoring device which measures the combustion temperature at the point of incineration of effluent gases which are emitted from any lime kiln, recovery furnace, digester system, multiple-effect evaporator system, or condensate stripper system. The monitoring device is to be certified by the manufacturer to be accurate within 1.0% of the temperature being measured.

C. The minimum data capture and validity requirements shall be as follows:

1. Valid TRS and oxygen data shall be obtained for no less than 75% of the operating hours of each quarter. Section 4 of Procedure 1 of Appendix F of 40 CFR Part 60 shall be used to determine valid data.

2. For TRS or oxygen concentrations, a valid data hour shall have at least 50% valid readings.

3. A 24-hour average TRS or oxygen concentration shall be considered valid if at least 50% of the operating hours in the 24-hour period are valid data hours.

4. Valid temperature data shall be obtained for no less than 90% of the operating time of each quarter.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from VR120-04-1312, eff. October 1, 1989; amended, Virginia Register Volume 15, Issue 12, eff. April 1, 1999.

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