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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 530. Electric Generator Voluntary Demand Response General Permit
11/5/2024

9VAC5-530-170. Operating limits.

A. 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 diesel fuel oil; maximum sulfur content per shipment, 0.0015%.

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

B. 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 specification D1835-05, or an equivalent method approved by the department.

C. The combined CI affected unit or units located in either an attainment or nonattainment area, shall consume no more than 502,766 gallons of diesel fuel or 554,230 gallons of biodiesel fuel 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. For affected units using any combination of the two fuels, the quantities of diesel oil and biodiesel, calculated monthly as the sum of each consecutive 12-month period, shall not exceed values that will allow the following equation to hold true:

A x (140,000 Btu/gal) + B x (127,000 Btu/gal) ≤ 70,387 x 106 Btu/yr

where:

A = Number of gallons of diesel fuel burned during any consecutive 12-month period.

B = Number of gallons of biodiesel burned during any consecutive 12-month period.

D. The combined SI affected unit or units located in an attainment area shall consume no more than 775,300 gallons of LPG or 72.88 x 106 cubic feet of natural gas 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. For affected units using any combination of the two fuels, the quantities of natural gas and LPG, calculated monthly as the sum of each consecutive 12-month period, shall not exceed values that will allow the following equation to hold true:

A x (1,000 Btu/ft3) + B x (94,000 Btu/gal) ≤ 72,878 x 106 Btu/yr

where:

A = Number of cubic feet of natural gas burned during any consecutive 12-month period.

B = Number of gallons of LPG burned during any consecutive 12-month period.

E. The combined SI affected unit or units located in a nonattainment area shall consume no more than 480,032 gallons of LPG or 45.12 x 106 cubic feet of natural gas 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. For affected units using any combination of the two fuels, the quantities of natural gas and LPG, calculated monthly as the sum of each consecutive 12-month period, shall not exceed values that will allow the following equation to hold true:

A x (1,000 Btu/ft3) + B x (94,000 Btu/gal) ≤ 45,123 x 106 Btu/yr

where:

A = Number of cubic feet of natural gas burned during any consecutive 12-month period.

B = Number of gallons of LPG burned during any consecutive 12-month period.

F. 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);

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

§§ 10.1-1307.02 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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