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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 540. Emergency Generator General Permit
11/23/2024

9VAC5-540-170. Operating limits.

A. Each affected unit located in an attainment area shall not operate more than 450 hours per year, calculated monthly as the sum of each consecutive 12-month period.

1. Compliance for the consecutive 12-month period shall be demonstrated monthly by adding the total for the most recently completed calendar month to the individual monthly totals for the preceding 11 months.

2. Total emissions for any consecutive 12-month period, calculated as the sum of all emissions from operations under this condition, shall not exceed the limits stated in of 9VAC5-540-180 F.

B. Each affected unit located in a nonattainment area shall not operate more than 500 hours per year, calculated monthly as the sum of each consecutive 12-month period.

1. Compliance for the consecutive 12-month period shall be demonstrated monthly by adding the total for the most recently completed calendar month to the individual monthly totals for the preceding 11 months.

2. Total emissions for any consecutive 12-month period, calculated as the sum of all emissions from operations under this condition, shall not exceed the limits stated in 9VAC5-540-180 F.

C. The approved fuels for each CI affected unit are diesel fuel, biodiesel fuel, and biodiesel blends. These fuels shall meet the following specifications:

1. Diesel fuel that meets the ASTM D975-10b specification for S15 fuel oil; maximum sulfur content per shipment, 0.0015%.

2. Biodiesel fuel which meets ASTM specification D6751-09; maximum sulfur content per shipment, 0.0015%.

D. The approved fuels for each SI affected unit are natural gas and liquid petroleum gas (LPG). These fuels shall meet the following specifications.

1. Natural gas with a minimum heat content of 1,000 Btu/scf HHV as determined by ASTM D1826-94 (Reapproved 2010), ASTM D4809-09a, or an equivalent method approved by the department.

2. LPG, including butane and propane, that meets ASTM D1835-05, or an equivalent method approved by the department.

E. For affected units using diesel fuel or biodiesel fuel, the owner shall obtain a certification from the fuel supplier with each shipment of diesel fuel or biodiesel fuel. Each fuel supplier certification shall include the following:

1. The name of the fuel supplier.

2. The date on which the diesel fuel or biodiesel was received.

3. The quantity of diesel fuel or biodiesel delivered in the shipment.

4. A statement that the diesel fuel complies with the American Society for Testing and Materials specifications (ASTM D975-10b) for S15 fuel oil.

5. A statement that the biodiesel fuel complies with the American Society for Testing and Materials specifications (ASTM D6751-09), and

6. The sulfur content of the diesel fuel or biodiesel fuel.

Statutory Authority

§§ 10.1-1307.2 and 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 27, Issue 23, eff. August 17, 2011.

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