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Virginia Administrative Code (Last Updated: January 10, 2017) |
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Title 9. Environment |
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Agency 5. State Air Pollution Control Board |
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Chapter 70. Air Pollution Episode Prevention |
Section 20. Definitions
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A. For the purpose of these regulations and subsequent amendments or any orders issued by the board, the words or terms shall have the meanings given them in subsection C of this section.
B. As used in this chapter, all terms not defined here shall have the meanings given them in 9VAC5 Chapter 10 (9VAC5-10-10 et seq.), unless otherwise required by context.
C. Terms defined.
"Air pollution episode" means a situation which is declared by responsible authorities as set forth in this chapter when weather or air pollution conditions or both indicate a potential threat to human health.
"Soiling index" means a measure of the soiling properties of suspended particles in air determined by drawing a measured volume of air through a known area of Whatman No. 4 filter paper for a measured period of time (normally two hours) expressed by COH's/1000 linear feet.
Historical Notes
Derived from VR120-07-02, eff. July 1, 1991.