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RULE 4612 MOTOR VEHICLE AND MOBILE EQUIPMENT COATING OPERATIONS 

(Adopted September 21, 2006; Amended September 20, 2007; Amended 

October 21, 2010) 

1.0 Purpose 

The purpose of this rule is to limit volatile organic compound (VOC) emissions from 

coatings of motor vehicles, mobile equipment, and associated parts and components, 

and associated organic solvent cleaning, storage, and disposal. 

2.0 Applicability 

This rule is applicable to any person who supplies, sells, offers for sale, manufacturers, 

or distributes any automotive coating for use within the District, as well as any person 

who uses, applies, or solicits the use or application of any automotive coating within 

the District. 

3.0 Definitions 

3.1 Adhesion Promoter: a coating, which is labeled and formulated to be applied to 

uncoated plastic surfaces to facilitate bonding of subsequent coatings, and on 

which, a subsequent coating is applied. 

3.2 Aerosol Coating Product: a hand-held, non-refillable, disposable pressurized 

spray system that dispenses product ingredients by means of a propellantinduced force. 

3.3 APCO: as defined in Rule 1020 (Definitions). 

3.4 ARB: California Air Resources Board. 

3.5 Assembly Line: an arrangement of industrial equipment and workers in which 

the product passes, by either automatic or manual means, from one specialized 

operation to another until complete. 

3.6 ASTM: American Society for Testing and Materials. 

3.7 Associated Parts and Components: structures, devices, pieces, modules, 

sections, assemblies, subassemblies, or elements of motor vehicles or mobile 

equipment that are designed to be a part of motor vehicles or mobile equipment 

but which are not attached to motor vehicles or mobile equipment, at the time of 

coating the structure, device, piece, module, section, assembly, subassembly, or 

element. Associated parts and components do not include circuit boards. 
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3.8 Automotive Coating: a coating or coating component used or recommended for 

use in motor vehicle or mobile equipment refinishing, service, maintenance, 

repair, restoration, or modification, except metal plating activities. Any 

reference to automotive refinishing or automotive coating made by a person on 

the container or in product literature constitutes a recommendation for use in 

motor vehicle and mobile equipment refinishing. 

3.9 Automotive Coating Component: a portion of a coating, including, but not 

limited to, a reducer or thinner, toner, hardener, and additive, which is 

recommended the manufacturer for use in an automotive coating, or which is 

supplied for or used in an automotive coating. The raw materials used to 

produce the components are not considered automotive coating components. 

3.10 Automotive Refinishing Facility: a shop, business, location, or parcel of land 

where motor vehicles or mobile equipment or their associated parts and 

components are coated, including autobody collisions repair shops. Automotive 

refinishing facility does not include the original equipment manufacturing plant 

where the motor vehicle or mobile equipment is completely assembled. 

3.11 CFR: Code of Federal Regulations. 

3.12 Cleaning Operations: the removal of loosely held uncured adhesives, inks, 

coatings, or contaminants, including, but not limited to, dirt, soil, or grease 

from motor vehicles, mobile equipment, associated parts and components, 

substrates, parts, products, tools, machinery, equipment, or general work areas. 

3.13 Clear Coating: a coating that contains no pigments and is labeled and 

formulated for application over a color coating or clear coating. 

3.14 Coating: a material which is applied to a surface and forms a film in order to 

beautify, preserve, repair, or protect such a surface. 

3.15 Color Coating: a pigmented coating, excluding adhesion promoters, primers, 

and multi-color coatings, that requires a subsequent clear coating and which is 

applied over a primer, adhesion promoter, or color coating. Color coatings 

include metallic/iridescent color coatings. 

3.16 Electrostatic Spray Application: a method of spray application of coatings 

where an electrostatic attraction is created between the part to be coated and the 

paint particles. 

3.17 Emission Control System: a combination of capture systems and control devices 

used to reduce VOC) emissions from automotive coating operations. 
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3.18 EPA: United States Environmental Protection Agency. 

3.19 Exempt Compounds: an organic compound not classified as a VOC, as listed in 

the definition of volatile organic compound in Rule 1020 (Definitions). 

3.20 Graphic Arts Operation: the application of logos, letters, numbers, or graphics 

to a painted surface by brush, roller, or airbrush.

3.21 High-Volume, Low-Pressure (HVLP): spray equipment permanently labeled as 

such and which is designed and operated between 0.1 and 10 pounds per square 

inch, gauge, (psig) air atomizing pressure, measured dynamically at the center 

of the air cap and at the air horns. 

3.22 Metallic/Iridescent Color Coating: a coating that contains more than 0.042 

pounds per gallon (5 grams per liter) of metal or iridescent particles as applied, 

where such particles are visible in the dried film.

3.23 Mobile Equipment: a device that may be drawn and/or driven on rails or a road 

way including, but not limited to, trains, railcars, truck trailers, mobile cranes, 

bulldozers, street cleaners, and implements of husbandry or agriculture. 

3.24 Motor Vehicle: a self-propelled vehicle, including, but not limited to, cars, 

trucks, buses, golf carts, vans, motorcycles, tanks, and armored personnel 

carriers. 

3.25 Multi-Color Coating: a coating that exhibits more than one color in the dried 

film after a single application, is packaged in a single container, hides surface 

defects on areas of heavy use, and is applied over a primer or adhesion 

promoter. 

3.26 Normal Business Hours: Monday through Friday, 8:00 am to 5:00 pm. 

3.27 Operator: includes but is not limited to any person who owns, leases, 

supervises, or operates a facility and/or equipment. 

3.28 Permanently Labeled: equipment labeled by the manufacturer such that the 

operator cannot alter it. Permanent labeling is in the form of an engraving or a 

plate permanently attached to the equipment. 

3.29 Person: as defined in the California Health and Safety Code Section 39047. 
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3.30 Pretreatment Coating: a coating, that contains a minimum of one-half (0.5) 

percent acid by weight and not more that 16 percent solids by weight, necessary 

to provide surface etching and is labeled and formulated for application directly 

to bare metal surfaces to provide corrosion resistance and adhesion. 

3.31 Primer: coating, which is labeled and formulated for application to a substrate 

to provide a bond between the substrate and subsequent coats, corrosion 

resistance, a smooth substrate surface, or resistance to penetration of subsequent 

coats, and on which a subsequent coating is applied. Primers may be 

pigmented. 

3.32 Primer Sealer: a coating which is labeled and formulated for application prior 

to the application of a color coating for the purpose of color uniformity, or to 

promote the ability of the underlying coating to resist penetration by the color 

coating. 

3.33 San Joaquin Valley Air Basin (SJVAB): as defined in Rule 1020 (Definitions). 

3.34 SCAQMD: South Coast Air Quality Management District. 

3.35 Single-Stage Coating: a pigmented coating, excluding primers and multi-color 

coatings, labeled and formulated for application without a subsequent clear coat. 

Single-stage coatings include single-stage metallic/iridescent coatings. 

3.36 Solvent: as defined in Rule 4663 (Organic Solvent Cleaning, Storage, and 

Disposal). 

3.37 Spot Repair: repair of an area of less than one (1.0) square foot (929 square 

centimeters) on a motor vehicle, piece of mobile equipment, or associated parts 

or components. 

3.38 Stripping: the use of solvent to remove material such as cured adhesives, cured 

inks, cured or dried paint, cured or dried paint residue or temporary protective 

coating. 

3.39 Temporary Protective Coating: a coating, which is labeled and formulated for 

the purpose of temporarily protecting areas from overspray or mechanical 

damage. 

3.40 Transfer Efficiency: the amount of coating solids adhering to the object being 

coated divided by the total amount of coating solids sprayed, expressed as a 

percentage. 
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3.41 Truck Bed Liner Coating: a coating, excluding clear, color, multi-color, and 

single stage coatings, labeled and formulated for application to a truck bed to 

protect it from surface abrasion. 

3.42 Underbody Coating: a coating labeled and formulated for application to wheel 

wells, the inside of door panels or fenders, the underside of a trunk or hood, or 

the underside of the motor vehicle. 

3.43 Uniform Finish Coating: a coating labeled and formulated for application to the 

area around a spot repair for the purpose of blending a repaired area’s color or 

clear coat to match the appearance of an adjacent area’s existing coating. 

3.44 Volatile Organic Compound (VOC): as defined in Rule 1020 (Definitions). For 

the purpose of this rule, Tertiary Butyl Acetate (TBAc) will not be considered a 

VOC when used as an automotive coating component. 

3.45 VOC Content 

3.45.1 VOC Regulatory for Coatings: VOC in grams per liter of coating, 

excluding water and exempt compounds, and shall be calculated by the 

following equation: 

VOC regulatory content = Wv – Ww – Wec

 Vm – Vw - Vec 

3.45.2 VOC Actual for Coatings: VOC in grams per liter of material, and shall 

be calculated using the following equation: 

VOC actual content = Wv – Ww – Wec

Vm 

3.45.3 VOC Content for Solvents or Solvent Blends: VOC in grams per liter of 

material, and shall be calculated using the following equation: 

VOC content = Wv – Ww – Wec

 Vm 

 Where: 

 VOC content = amount of volatile organic compounds in gram per liter 

 Wv = weight of volatiles in grams 

 Ww = weight of water in grams 

 Wec = weight of exempt compounds in grams 

 Vm = volume of material (coating) in liters 

 Vw = volume of water in liters 

 Vec = volume of exempt compounds in liters 
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4.0 Exemptions 

4.1 This rule does not apply to: 

4.1.1 Automotive coatings that are offered for sale, sold, or manufactured for 

use outside the SJVAB or for shipment to other manufacturers for 

reformulation or repackaging. 

4.1.2 Aerosol coating products. 

4.1.3 Automotive coatings that are sold, supplied, or offered for sale in 0.5 

fluid ounce or smaller containers intended to be used by the general 

public to repair tiny surface imperfections. 

4.1.4 Any coating applied to new motor vehicles or mobile equipment, or their 

associated parts and components, during manufacture on an assembly 

line pursuant to Rule 4602 (Motor Vehicle Assembly Coatings). 

4.2 The provisions of Section 5.8 shall not apply to the stripping of cured coatings, 

except the stripping of such materials from spray application equipment. 

5.0 Requirements 

5.1 Coating Limits 

No person shall apply to any motor vehicle, mobile equipment, or associated 

parts and components, any coating with a VOC regulatory content, as calculated 

pursuant to Section 3.45.1, in excess of the applicable limits in Table 1, except 

as provided in Section 5.3. 
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Table 1 - VOC Content Limits for Coatings

VOC Regulatory Limit, as applied, 

in grams per liter 

Coating Category (pounds per gallon) 

Adhesion Promoter 540 (4.5) 

Clear Coating 250 (2.1) 

Color Coating 420 (3.5) 

Multi-Color Coating 680 (5.7) 

Pretreatment Coating 660 (5.5) 

Primer 250 (2.1) 

Primer Sealer 250 (2.1) 

Single-Stage Coating 340 (2.8) 

Temporary Protective Coating 60 (0.5) 

Truck Bed Liner Coating 310 (2.6) 

Underbody Coating 430 (3.6) 

Uniform Finish Coating 540 (4.5) 

Any other coating type 250 (2.1) 

5.2 Most Restrictive VOC Limit 

If anywhere on the container of any automotive coating, or any label or sticker 

affixed to the container, or in any sales, advertising, or technical literature, any 

representation is made that indicates that the coating meets the definition of or is 

recommended for use for more than one of the coating categories listed in 

Section 5.1, then the lowest applicable VOC content limit in Table 1 shall 

apply. 

5.3 VOC Emission Control System 

In lieu of complying with the applicable requirements of Section 5.1, 5.7, or 

5.8, a person may use a VOC emission control system that meets all of the 

following requirements: 

5.3.1 The VOC emission control system shall be approved, in writing, by the 

APCO. 

5.3.2 The VOC emission control system shall achieve an overall capture and 

control efficiency of at least 85 percent by weight. 

5.3.3 In no case shall compliance through the use of a VOC emission control 

system result in VOC emissions in excess of the VOC emissions which 

would result from compliance with applicable requirements of Section 

5.1, 5.7, or 5.8. 
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5.4 Prohibition of Possession 

No person shall possess at any automotive refinishing facility, any automotive 

coating that is not in compliance with Section 5.1 or 5.3, as applicable. 

5.5 Prohibition of Sale or Manufacture 

5.5.1 No person shall manufacture, blend, repackage for sale, supply, sell, 

offer for sale, or distribute within the SJVAB any coating with a VOC 

content in excess of the limits specified in Section 5.1. 

5.5.2 Notwithstanding the provisions of Section 5.5.1, a person may 

manufacture, blend, repackage for sale, supply, sell, offer for sale, or 

distribute a coating with a VOC content in excess of the limits specified 

in Section 5.1 under one of the following circumstances and provided all 

of the requirements of Section 6.7 are also met: 

5.5.2.1 The coating is for use exclusively within a VOC emission 

control system as allowed in Section 5.3, or 

5.5.2.2 The coating is for use outside the SJVAB. 

5.6 Prohibition of Specification 

No person shall solicit, require the use of, or specify the application or use of 

any coating on a motor vehicle, mobile equipment, or associated parts and 

components, if such use or application results in a violation of this rule. This 

prohibition shall apply to all written or oral contracts, including, but not limited 

to, job orders, under the terms of which any coating that is subject to the 

provisions of this rule is to be used or applied. This prohibition shall not apply 

to coatings that meet the criteria specified in Section 5.5. 

5.7 Coating Application Methods 

Except for underbody coatings, graphic arts operations, truck bed liner coatings, 

or any coating use of less than one (1.0) fluid ounce (29.6 milliliters), no person 

shall apply any coating to any motor vehicle, mobile equipment, or associated 

parts and components unless one of the following application methods is used: 

5.7.1 Brush, dip, or roller. 

5.7.2 Electrostatic spray. 

5.7.3 High-Volume Low-Pressure (HVLP) spray equipment. 
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5.7.3.1 HVLP spray equipment shall be operated in accordance with 

the manufacturer’s recommendations. 

5.7.3.2 A person shall not sell or offer for sale for use within the 

SJVAB any HVLP spray gun without a permanent marking 

denoting the maximum inlet air pressure in psig at which the 

gun will operate within the parameters specified in Section 3.0. 

5.7.4 Use of a spray gun not permanently marked HVLP. If a spray gun is 

used, the operator must demonstrate that the gun meets the HVLP 

definition in Section 3.21 in design and use. A satisfactory 

demonstration must be based on the manufacturer’s published technical 

material on the design of the gun and by a demonstration of the operation 

of the gun using an air pressure tip gauge designed specifically for the 

gun in use. 

5.7.5 Any other coating application method that is capable of achieving at least 

65 percent transfer efficiency, as determined per Section 6.8.8. Written 

approval from the APCO shall be obtained for each alternative method 

prior to use. 

5.7.6 In lieu of complying with the applicable provisions of Sections 5.7.1 

through 5.7.5, an operator may control VOC emissions from coating 

application with a VOC emission control system that meets the 

requirements of Section 5.3 around the coating operation. 

5.8 Organic Solvent Cleaning Requirements 

5.8.1 For solvent cleaning operations other than for bug and tar removal, a 

person shall not use solvents that have VOC content greater than 25 

grams VOC per liter of cleaning material, as calculated using the 

equation listed in Section 3.45.3. 

5.8.2 For bug and tar removal, a person shall not use any material other than 

bug and tar remover regulated under the Consumer Products Regulation 

(California Code of Regulations Section 94507 et seq.). 

5.8.3 In lieu of complying with Sections 5.8.1 and 5.8.2, a person may control 

VOC emissions from solvent cleaning with an APCO-approved VOC 

emission control system for the solvent cleaning operation that meets the 

requirements of Section 5.3. 
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5.9 Organic Solvent Disposal and Storage 

A person shall store or dispose of fresh or spent solvents, waste solvent cleaning 

materials such as cloth, paper, etc., coatings, adhesives, catalysts, and thinners 

in closed, non-absorbent and non-leaking containers. The containers shall 

remain closed at all times except when depositing or removing the contents of 

the containers or when the container is empty. 

6.0 Administrative Requirements 

6.1 Compliance Statement Requirement 

6.1.1 For each individual automotive coating or automotive coating 

component, the manufacturer and repackager shall include the following 

information on product data sheets, or an equivalent medium: 

6.1.1.1 The VOC Actual for Coatings and VOC Regulatory for 

Coatings, expressed in grams per liter, calculated pursuant to 

Section 3.45; 

6.1.1.2 The weight percentage of volatiles, water, and exempt 

compounds; 

6.1.1.3 The volume percentage of water and exempt compounds; and 

6.1.1.4 The density of the material (in grams per liter). 

6.1.2 For each individual ready to spray mixture (based on the manufacturer’s 

and repackager’s stated mix ratio), the manufacturer and repackager 

shall include the following information on product data sheets, or an 

equivalent medium: 

6.1.2.1 The VOC Actual for Coatings and VOC Regulatory for 

Coatings, expressed in grams per liter, calculated pursuant to 

Section 3.45; 

6.1.2.2 The weight percentage of volatiles, water, and exempt 

compounds; 

6.1.2.3 The volume percentage of water and exempt compounds; and 

6.1.2.4 The density of the material (in grams per liter). 
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6.2 Labeling Requirements 

The manufacturer and repackager of automotive coatings or automotive coating 

components shall include on all containers the applicable use category(ies), and 

the VOC Actual for Coatings and VOC Regulatory for Coatings, as supplied, 

expressed in grams per liter. 

6.3 Maintenance of Records 

Records required by this rule shall be retained on site for a period of five years, 

the records shall be made available on site to the APCO, ARB, or EPA, and the 

records shall be submitted to the APCO, ARB, or EPA upon request. 

6.4 Recordkeeping Requirements for Coatings 

Any person who uses coatings subject to this rule shall maintain records on a 

daily basis, and have available at all times, on site, the following: 

6.4.1 A current list of all coatings used that are subject to this rule. This list 

shall include the following information for each coating: 

6.4.1.1 Material name and manufacturer; 

6.4.1.2 Application method; 

6.4.1.3 Coating type (as listed in Section 5.1) and mix ratio specific to 

the coating; 

6.4.1.4 VOC Actual for Coatings and VOC Regulatory for Coatings, as 

applied, calculated pursuant to Section 3.45; and 

6.4.1.5 Quantity of each type of coating used. 

6.4.2 Current manufacturer specification sheets, material safety data sheets, 

technical data sheets, or air quality data sheets, which list the VOC 

Actual for Coatings and VOC Regulatory for Coatings of each ready-tospray coating (based on the manufacturer’s state mix ratio) and 

automotive coating components. 

6.4.3 Purchase records identifying the coating type (as listed in Section 5.1), 

name, and volume of coatings. 
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6.5 Recordkeeping Requirements for Solvents Used for Solvent Cleaning 

An operator using solvents for cleaning shall keep the following records. 

6.5.1 Keep a copy of the manufacturer’s product data sheet or material safety 

data sheet of the solvents used for organic solvent cleaning activities. 

6.5.2 Maintain a current list of solvents that are being used for organic solvent 

cleaning activities. The list shall include the following information: 

6.5.2.1 The name of the solvent and its manufacturer’s name. 

6.5.2.2 The VOC content of the solvent expressed in grams per liter or 

lb/gallon. 

6.5.2.3 When the solvent is a mixture of different materials that are 

blended by the person, the mix ratio of the batch shall be 

recorded and the VOC content of the batch shall be calculated 

and recorded in order to determine compliance with the 

specified limits of VOC content. 

6.5.3 The quantity of solvent used for solvent cleaning activities. 

6.6 VOC Emission Control System Records 

An operator using a VOC emission control system pursuant to Section 5.3 as a 

means of complying with this rule shall maintain daily records of key system 

operating parameters, which will demonstrate continuous operation and 

compliance of the emission control system during periods of VOC emissionproducing activities. Key system operating parameters are those parameters 

necessary to ensure or document compliance with Section 5.3, including but not 

limited to, temperatures, pressure drops, and airflow rates. 

6.7 Recordkeeping Requirements for Prohibition of Sale 

Any person claiming an exemption specified in Section 5.5.2 shall keep a 

detailed log of each automotive coating component and automotive coating 

manufactured, blended, repackaged for sale, supplied, sold, offered for sale, or 

distributed showing: 

6.7.1 The quantity manufactured, blended, repackaged for sale, supplied, sold, 

offered for sale, or distributed, including size and number of containers; 

6.7.2 The VOC Regulatory for Coatings; 
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6.7.3 The VOC Actual for Coatings; 

6.7.4 To whom they were supplied, sold, offered for sale, or distributed, or 

for whom they were manufactured, blended, or repackaged for sale 

including the name, address, phone number, retail tax license number, 

and valid District permit number, if applicable; and 

6.7.5 The specific exemption being utilized under Section 5.5.2. 

6.8 Test Methods 

The following test methods are incorporated by reference herein, and shall be 

used to test coatings subject to the provision of this rule. A source is in 

violation of this rule if any measurement by any of the listed applicable test 

methods exceeds the standards of this rule. 

6.8.1 Acid Content: Measurement of acid content (as specified in Section 

3.30) shall be determined by using American Standards for Testing and 

Materials (ASTM) D1613-03 “Standard Test Method for Acidity in 

Volatile Solvents and Chemical Intermediates used in Paint, Varnish, 

Lacquer, and Related Products,” October 2003. 

6.8.2 Alternative Test Methods: The use of other test methods which are 

determined to be equivalent or better and approved, in writing, by the 

APCO, ARB, and EPA may be used in place of the test methods 

specified in this rule. 

6.8.3 Determination of Overall Capture and Control Efficiency of VOC 

Emission Control Systems 

6.8.3.1 The capture efficiency of a VOC emission control system’s 

VOC collection device shall be determined according to EPA’s 

“Guidelines for Determining Capture Efficiency,” January 9, 

1995 and 40 CFR 51, Appendix M, Methods 204-204F, as 

applicable, or any other method approved by EPA, ARB, and 

the APCO. 

6.8.3.2 The control efficiency of a VOC emission control system’s 

VOC control device shall be determined using the following test 

methods: 

6.8.3.2.1 EPA Methods 2, 2A, or 2D for measuring flow rates. 
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6.8.3.2.2 EPA Methods 25, 25A, or 25B for measuring total 

gaseous organic concentrations at the inlet and outlet 

of the control device. 

6.8.3.2.3 EPA Method 18 or ARB Method 422 shall be used to 

determine the emissions of exempt compounds. 

6.8.3.2.4 For VOC emission control systems serving coating 

operations using TBAc-containing coatings, the TBAc

emissions shall be determined in accordance with 

Section 6.8.7. 

6.8.3.3 For VOC emission control systems that consist of a single VOC 

emission collection device connected to a single VOC emission 

control device, the overall capture and control efficiency shall 

be calculated by using the following equation: 

CECapture and Control = [ CECapture x CEControl ] / 100 

Where: 

CECapture and Control = Overall Capture and Control Efficiency, in 

percent 

CECapture = Capture Efficiency of the collection device, 

in percent, as determined in Section 6.8.3.1 

CEControl = Control Efficiency of the control device, in 

percent, as determined in Section 6.8.3.2. 

6.8.4 Exempt Compound Content: Exempt compound content shall be 

determined by using ARB Method 432, “Determination of 

Dichloromethane and 1,1,1-Trichlorethane in Paints and Coatings,” 

September 12, 1998; ARB Method 422 “Determination of Volatile 

Organic Compounds in Emission from Stationary Sources,” January 22, 

1987; or, SCAQMD Method 303-91 “Determination of Exempt 

Compounds,” February 1993. The Tertiary Butyl Acetate (TBAc) 

content in a coating shall be determined in accordance with Section 

6.8.7. TBAc is considered an exempt compound for the purposes of 

complying with Table 1 of this rule. 

6.8.5 HVLP Equivalency: Spray equipment HVLP equivalency (as specified in 

Section 5.7.4), shall be determined by using SCAQMD “Guidelines for 

Demonstrating Equivalency with District Approved Transfer Efficient 

Spray Guns,” September 26, 2002. 
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6.8.6 Metallic Content: The metallic content of a coating (as specified in 

Section 3.22) shall be determined by SCAQMD Method 318-95, 

“Determination of Weight Percent Elemental Metal in Coatings by Xray,” July 1996. 

6.8.7 Methyl Acetate, Acetone, Tertiary Butyl Acetate (TBAc), and PCBTF 

Content: The quantity of methyl acetate, acetone, Tertiary Butyl Acetate 

(TBAc), and parachloro-benzotrifluoride, (as specified in Sections 3.19, 

3.44, and 3.45), shall be determined by using ASTM Method D6133-02 

“Standard Test Method for Acetone, p-Chlorobenzotrifluoride, Methyl 

Acetate or t-Butyl Acetate Content of Solventborne and Waterborne 

Paints, Coatings, Resins, and Raw Materials by Direct Injection Into a 

Gas Chromatograph,” February 2003. 

6.8.8 Transfer Efficiency: Spray equipment transfer efficiency (as specified in 

Section 3.40 and 5.7.5) shall be determined by using SCAQMD Method 

“Spray Equipment Transfer Efficiency Test Procedure for Equipment 

User,” May 24, 1989. 

6.8.9 VOC Content of Coatings: VOC content, (as specified in Sections 3.45, 

and 5.1), shall be determined by EPA Method 24 as set forth in Title 40, 

Part 60, Appendix A, “Determination of Volatile Matter Content, Water 

Content, Density, Volume Solids, and Weight Solids of Surface 

Coatings.” 

6.8.10 VOC Content of Solvents: VOC content shall be determined by EPA 

Method 24 or 24A (Determination of Volatile Matter Content, Water 

Content, Density, Volume Solids, and Weight Solids of Surface 

Coatings), as applicable. The VOC content of materials containing 50 

g/l of VOC or less shall be determined by SCAQMD Method 313 

(Determination of Volatile Organic Compounds VOC by Gas 

Chromatography-Mass Spectrometry). 

6.9 Multiple Test Methods 

When more than one test method or set of test methods is specified for any 

testing, a violation of any requirement of this rule established by any one of the 

specified test methods or set of test methods shall constitute a violation of this 

rule. 

6.10 Version of Test Methods 

All ASTM test methods referenced in Section 6.8 are the most recently EPAapproved version that appears in the CFR as Materials Approved for 

Incorporation by Reference. 
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