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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources
11/21/2024

9VAC5-40-6990. Standard for volatile organic compounds.

A. No owner or other person may apply to mobile equipment or mobile equipment components any automotive pretreatment, automotive primer-surface, automotive primer-sealer, automotive topcoat, or automotive specialty coatings, including any VOC-containing materials added to the original coating supplied by the manufacturer, that contain VOCs in excess of the limits specified in Table 4-48A.

Table 4-48A.
Allowable Content of VOCs in Mobile Equipment Repair and Refinishing Coatings (as applied)

Weight of VOC per Volume of Coating (minus water and non-VOC solvents)

Coating Type

Limit

Pounds per gallon

Grams per Liter

Automotive pretreatment primer

6.5

780

Automotive primer-surfacer

4.8

575

Automotive primer-sealer

4.6

550

Automotive topcoat:

Single stage-topcoat

5.0

600

2 stage basecoat/clearcoat

5.0

600

3 or 4-stage basecoat/clearcoat

5.2

625

Automotive Multi-colored Topcoat

5.7

680

Automotive specialty

7.0

840

B. A person who provides mobile equipment repair and refinishing coatings subject to this section shall provide documentation concerning the VOC content of the coatings calculated in accordance with the following:

1. The mass of VOC per combined volume of VOC and coating solids, less water and exempt compounds shall be calculated by the following equation:

VOC =

(Wv - Ww - Wec)

(V - Vw - Vec)

where:

VOC = VOC content in grams per liter (g/l) of coating less water and non-VOC solvents;

Wv = Mass of total volatiles, in grams;

Ww = Mass of water, in grams;

Wec = Mass of exempt compounds, in grams;

V = Volume of coating, in liters;

Vw = Volume of water, in liters; and

Vec = Volume of exempt compounds, in liters.

To convert from grams per liter to pounds per gallon (lb/gal), multiply the result (VOC content) by 8.345 x 10-3 (lb/gal/g/l).

2. The VOC content of a multi-stage topcoat shall be calculated by the following equation:

where:

VOCmulti = VOC content of multistage topcoat, g/l

VOCbc = VOC content of basecoat, g/l

VOCmci = VOC content of the midcoat(s), g/l

VOCcc = VOC content of the clear coat, g/l

M = number of midcoats

C. A person subject to the provisions of this section shall use one or more of the following application techniques to apply any finish material listed in Table 4-48A:

1. Flow/curtain coating;

2. Dip coating;

3. Roller coating;

4. Brush coating;

5. Cotton-tipped swab application;

6. Electrodeposition coating;

7. High volume low pressure (HVLP) spraying;

8. Electrostatic spray;

9. Airless spray; or

10. Other coating application methods that achieve emission reductions equivalent to or greater than those achieved by HVLP or electrostatic spray application methods.

D. The following activities are exempt from the application equipment requirements listed in subsections E and F of this section:

1. The use of airbrush application methods for stenciling, lettering, and other identification markings;

2. The application of coatings sold in nonrefillable aerosol containers; and

3. The application of automotive touch-up repair finish materials.

E. Spray guns used to apply mobile equipment repair and refinishing coatings shall be cleaned by one of the following:

1. An enclosed spray gun cleaning system that is kept closed when not in use;

2. Unatomized discharge of solvent into a paint waste container that is kept closed when not in use;

3. Disassembly of the spray gun and cleaning in a vat that is kept closed when not in use; or

4. Atomized spray into a paint waste container that is fitted with a device designed to capture atomized solvent emissions.

F. The owner of a facility subject to the provisions of this article shall implement the following housekeeping and pollution prevention and training measures:

1. Fresh and used coatings, solvent, and cleaning solvents, shall be stored in nonabsorbent, nonleaking containers. The containers shall be kept closed at all times except when filling or emptying;

2. Cloth and paper, or other absorbent applicators, moistened with coatings, solvents, or cleaning solvents, shall be stored in closed, nonabsorbent, nonleaking containers;

3. Handling and transfer procedures shall minimize spills during the transfer of coatings, solvents, and cleaning solvents; and

4. Ensure that a person who applies mobile equipment repair and refinishing coatings has completed training approved by the manufacturer of the coatings in the proper use and handling of the mobile equipment repair and refinishing coatings, solvents and waste products in order to minimize the emission of air contaminants and to comply with this section.

Statutory Authority

§ 10.1-1308 of the Code of Virginia; §§ 110, 111, 123, 129, 171, 172 and 182 of the Clean Air Act, 40 CFR Parts 51 and 60.

Historical Notes

Derived from Virginia Register Volume 20, Issue 12, eff. March 24, 2004; Errata, 20:18 VA.R. 2027 May 17, 2004.

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