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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources
9/18/2020

9VAC5-40-7890. Test Methods and Procedures.

A. The provisions of 9VAC5-40-30 (Emission testing) apply.

B. For the purpose of demonstrating compliance with the emission control requirements of this rule, the affected facility shall be run under typical operating conditions and flow rates compatible with scheduled production during any emission testing.

C. Emissions tests shall include an initial test within 90 days of start-up when the control device is installed and operating that demonstrates compliance with the emission standard in 9VAC5-40-7820.

D. The following reference methods (cited in 40 CFR Part 60, Appendix A) shall be used to demonstrate compliance with the emission limit or percent reduction efficiency requirement in 9VAC5-40-7820. Alternate methods may be used with the approval of the board.

1. Reference Method 1 or 1A, as appropriate, shall be used to select the sampling sites. The control device sampling sites for determining efficiency in reducing volatile organic compounds (excluding methane and ethane) from the dryer exhaust shall be placed before the control device inlet (after the dryer) and at the outlet of the control device.

2. Reference Method 2, 2A, 2C, or 2D, as appropriate, shall be used to determine the velocity and volumetric flow rate of the exhaust stream.

3. Reference Method 18, 25, or 25A shall be used to determine the volatile organic compound concentration of the exhaust stream entering and exiting the control device. Good judgment is required in determining the best applicable volatile organic compound test method for each situation. The method selected shall be based on consideration of the diversity of organic species present and their total concentration and on consideration of the potential presence of interfering gases. Because of the different response factors for the many organic compounds formed during the combustion process, only Reference Method 25, which measures volatile organic compounds as a carbon, shall be used; except in cases where the expected outlet volatile organic compound concentration of the control device is less than 100 ppmv as carbon, in which case Reference Method 25A shall be used.

a. If average, nonmethane volatile organic compound concentrations in the outlet of a thermal or catalytic oxidizer measured by Reference Method 25A are found to be greater than 100 ppmv as carbon, the board may request a repeat test to be conducted using Reference Method 18 or 25.

b. A test shall consist of three separate runs, each lasting a minimum of 60 minutes, unless the board determines that process variables dictates shorter sampling times.

c. Reference Method 25 specifies a minimum probe and temperature of 265°F. To prevent condensation, the probe should be heated to at least the gas stream temperature, typically close to 350°F.

E. The volatile organic compound content of each batch of fountain solution shall be determined by one of the following procedures:

1. Analysis by Reference Method 24 of a sample of the batch of fountain solution; or

2. Calculation which combines Reference Method 24 analytical volatile organic compound content data for the concentrated materials used to prepare the press-ready batch based on records of the proportions in which they are mixed to make the batch. The analysis of the concentrated materials may be performed by the supplier of the materials. Mix proportions may be used to determine the volatile organic compound content of the fountain solution as a substitute for Method 24 if the supplier has provided Method 24 information for the volatile organic compound content of the concentrates.

F. A thermometer or other temperature detection device capable of reading to 0.5°F shall be used to ensure that any refrigerated fountain solution recirculating reservoirs are maintained at or below 60°F at all times.

G. The volatile organic compound or volatile organic compound partial vapor pressure of each cleaning solution shall be determined by one of the following procedures:

1. Analysis by Reference Method 24 for volatile organic compound content or by an appropriate method for composite partial vapor pressure of a sample of the cleaning solution; or

2. Calculation for volatile organic compound content which combines Reference Method 24 analytical volatile organic compound content data for the concentrated materials used to prepare the press-ready batch based on records of the proportions in which they are mixed to make the batch. The analysis of the concentrated materials may be performed by the supplier of the material. Mix proportions may be used to determine the volatile organic compound content of the cleaning solution as a substitute for Method 24 if the supplier has provided Method 24 information for the volatile organic compound content of the concentrates.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from Volume 12, Issue 11, eff. April 1, 1996.

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