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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 80. Permits for Stationary Sources
11/20/2019

9VAC5-80-710. General.

Article 4
Insignificant Activities

A. For the purposes of Article 1 (9VAC5-80-50 et seq.), Article 2 (9VAC5-80-310 et seq.) and Article 3 (9VAC5-80-360 et seq.) of this chapter, insignificant activities shall be those activities listed in 9VAC5-80-720. There are three categories of insignificant activities as follows:

1. Insignificant emissions units. This category includes emissions units that are deemed insignificant because they are sufficiently small so as to be considered insignificant for the purpose of identifying the emissions units in permit applications. Emissions units in this category are not required to be included in permit applications submitted pursuant to Article 1 (9VAC5-80-50 et seq.) or Article 3 (9VAC5-80-360 et seq.) of this chapter. Insignificant activities falling into this category are listed in 9VAC5-80-720 A.

2. Emissions units with insignificant emissions levels. This category includes emissions units, other than those in subdivision A 1 of this section, that are deemed insignificant because they have emissions levels sufficiently small so as to be considered insignificant for the purpose of quantifying the emissions from the emissions units in a permit application. Emissions units emitting at these insignificant levels are required to be identified by listing them as insignificant emissions units in the permit application submitted pursuant to Article 1 (9VAC5-80-50 et seq.) or Article 3 (9VAC5-80-360 et seq.) of this chapter. The list of insignificant emissions units shall also specify the pollutant or pollutants emitted at insignificant emissions levels for each emissions unit on the list. However, information on the amount of emissions from these units is not required to be provided. Insignificant activities in this category are listed in 9VAC5-80-720 B.

3. Emissions units of an insignificant size or production rate. This category includes emissions units, other than those in subdivision 1 or 2 of this subsection, that are deemed insignificant because the emissions from these units are considered to be of minimal or no air quality concern for the purpose of quantifying the emissions from the emissions units in a permit application. Emissions units in this category are required to be identified by listing them as insignificant emissions unit in the permit application submitted pursuant to Article 1 (9VAC5-80-50 et seq.) or Article 3 (9VAC5-80-360 et seq.) of this chapter. The list of insignificant emissions units shall also specify the size or the production rate for each emissions unit on the list. Insignificant activities in this category are listed in 9VAC5-80-720 C.

4. Regardless of the emissions units designated in 9VAC5-80-720 A, B, or C, the emissions from any emissions unit should be included in the permit application submitted pursuant to Article 1 (9VAC5-80-50 et seq.) or Article 3 (9VAC5-80-360 et seq.) of this chapter if the omission of those emissions units would interfere with the determination of applicability of Article 1 (9VAC5-80-50 et seq.) or Article 3 (9VAC5-80-360 et seq.) of this chapter, the determination of or imposition of any applicable requirement, or the calculation of permit fees.

B. Definitions.

1. For the purpose of this article and subsequent amendments issued by the board, the words or terms shall have the meanings given them in subdivision 2 of this subsection. As used in this article, 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.

2. Terms defined.

"Uncontrolled emissions" means the emissions from a source when operating at maximum capacity without air pollution control equipment. Air pollution control equipment includes control equipment which is not vital to its operation, except that its use enables the source to conform to applicable air pollution control laws and regulations. Annual uncontrolled emissions shall be based on the maximum annual rated capacity (based on 8,760 hours of operation per year) of the source, unless the source is subject to state and federally enforceable permit conditions which limit the annual hours of operation. Enforceable permit conditions on the type or amount of material combusted or processed may be used in determining the uncontrolled emissions of a source. Secondary emissions do not count in determining the uncontrolled emissions of a stationary source.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from Volume 12, Issue 25, eff. October 15, 1996.

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