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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources
12/30/2024

9VAC5-40-7980. Standard for carbon monoxide.

No owner or other person shall cause or permit to be discharged into the atmosphere from any affected facility any gases that contain carbon monoxide in excess of the following limits:

1. For mass burn waterwall units: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

2. For mass burn refractory units: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

3. For mass burn rotary refractory units: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).

4. For mass burn rotary waterwall units: 250 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).

5. For modular starved air units: 50 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

6. For modular excess air units: 50 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

7. For refuse-derived fuel stokers: 200 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).

8. For bubbling fluidized bed combustors: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

9. For circulating fluidized bed combustors: 100 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

10. For pulverized coal/refuse-derived fuel mixed fuel-fired combustors: 150 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (four-hour average).

11. For spreader stoker coal/refuse-derived fuel mixed fuel-fired combustors: 200 parts per million by volume, corrected to 7.0% oxygen, dry basis, calculated as an arithmetic average (24-hour average).

Statutory Authority

§ 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 15, Issue 21, eff. August 4, 1999.

Website addresses provided in the Virginia Administrative Code to documents incorporated by reference are for the reader's convenience only, may not necessarily be active or current, and should not be relied upon. To ensure the information incorporated by reference is accurate, the reader is encouraged to use the source document described in the regulation.

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