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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 190. Variance for Merck Stonewall Plant
9/18/2020

9VAC5-190-30. Sitewide Emissions Caps.

A. On or after the date that Merck provides written notification to the DEQ that it accepts and will operate under the provisions of this chapter and Sections 1, 3 and 4 of the PSD permit, no owner or other person shall cause or permit to be discharged into the atmosphere from the affected facility any emissions in excess of the following sitewide emissions caps:

The total criteria pollutant emissions cap (total emissions cap) shall be 1,503 tons per year (tpy). The criteria pollutants included in the cap are as follows: ozone (using volatile organic compounds (VOCs) as surrogate), sulfur dioxide (SO2), particulate matter (PM10), carbon monoxide (CO), and oxides of nitrogen (NOX). The emissions caps for individual criteria pollutants shall be as follows:

1. For SO2, the emissions cap shall be 719 tpy.

2. For PM10, the emissions cap shall be 42 tpy.

3. For NOX, the emissions cap shall be 291 tpy.

B. On or after the earlier of (i) the completion date of the powerhouse conversion project if Merck has provided the written notification pursuant to subsection A of this section or (ii) the first day of the month 12 months after completion of the powerhouse conversion project, no owner or other person shall cause or permit to be discharged into the atmosphere from the affected facility any emissions in excess of the following sitewide emissions caps:

The total criteria pollutant emissions cap (total emissions cap) shall be 1,202 tons per year (tpy). The criteria pollutants included in the cap are as follows: ozone (using volatile organic compounds (VOCs) as surrogate), sulfur dioxide (SO2), particulate matter (PM10), carbon monoxide (CO), and oxides of nitrogen (NOX). The emissions caps for individual criteria pollutants shall be as follows:

1. For SO2, the emissions cap shall be 539 tpy.

2. For PM10, the emissions cap shall be 42 tpy.

3. For NOX, the emissions cap shall be 262 tpy.

C. Upon completion of the stack test for the powerhouse required by Table 4.2 of the PSD permit, the emissions cap for PM10 prescribed in subsection B of this section may be adjusted by the DEQ based on the results of the stack test and in accordance with Section 4.3.2 of the PSD permit.

Statutory Authority

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

Historical Notes

Derived from Volume 14, Issue 02, eff. November 15, 1997.

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