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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

9VAC5-40-450. Standard for volatile organic compounds.

A. Reactors, distillation operations, crystallizers, centrifuges and vacuum dryers.

1. No owner or other person shall use or permit the use of any reactor, distillation operation, crystallizer, centrifuge or vacuum dryer process unit unless such unit is equipped with a vapor control system that will remove, destroy or prevent the discharge into the atmosphere of at least 90% by weight of volatile organic compound emissions.

2. Achievement of the emission standard in subsection A 1 of this section by use of methods in 9VAC5-40-460 A and E will be acceptable to the board.

B. Air dryers and production equipment exhaust systems.

1. No owner or other person shall use or permit the use of any air dryer or production equipment exhaust system process unit unless such unit is equipped with a vapor control system that will remove, destroy or prevent the discharge into the atmosphere of at least 90% by weight of volatile organic compound emissions.

2. Achievement of the emission standard in subsection B 1 of this section by use of methods in 9VAC5-40-460 B and E will be acceptable to the board.

C. Filling of storage tanks.

1. No owner or other person shall use or permit the use of any stationary storage tank of more than 2,000 gallons capacity for storage of any volatile organic compound unless such tank is equipped with a vapor control system that will remove, destroy or prevent the discharge into the atmosphere of at least 90% by weight of volatile organic compound emissions during the filling of such tank.

2. Achievement of the emission standard in subsection C 1 of this section by use of the methods in 9VAC5-40-460 C and E will be acceptable to the board.

3. The provisions of subsection C of this section shall not be applicable to facilities using volatile organic compounds with a vapor pressure less than 4.1 pounds per square inch absolute at 68°F.

D. Volatile organic compound storage.

1. No owner or other person shall use or permit the use of any tank for storage of volatile organic compounds, unless such tank is equipped with a vapor control system which will remove, destroy or prevent the discharge into the atmosphere of at least 90% by weight of volatile organic compound emissions.

2. Achievement of the emission standard in subsection D 1 of this section by use of control methods in 9VAC5-40-460 D and E will be acceptable to the board.

3. The provisions of subsection D of this section shall not be applicable to facilities using volatile organic compounds with a vapor pressure less than 1.5 pounds per square inch absolute at 68°F.

Statutory Authority

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

Historical Notes

Derived from VR120-04-0503, eff. July 1, 1991.

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