Yolo-Solano AQMD

Revised December 10, 2008 Reg. II, Rule 2.26, Page 1

RULE 2.26

MOTOR VEHICLE AND MOBILE EQUIPMENT COATING OPERATIONS

ADOPTED April 27, 1994

REVISED November 9, 1994

REVISED August 13, 1997

REVISED May 14, 2008

REVISED December 10, 2008

INDEX

100 GENERAL

101 PURPOSE

102 APPLICABILITY

103 SEVERABILITY

110 EXEMPTION - GENERAL

111 EXEMPTION - PROHIBITION OF SALE OR MANUFACTURE

112 EXEMPTION - APPLICATION REQUIREMENTS

200 DEFINITIONS

201 ADHESION PROMOTER

202 AEROSOL COATING PRODUCT

203 ANTIGLARE/SAFETY COATING

204 ASSEMBLY LINE

205 ASSOCIATED PARTS AND COMPONENTS

206 AUTOMOTIVE COATING

207 AUTOMOTIVE COATING COMPONENT

208 AUTOMOTIVE REFINISHING FACILITY

209 CATALYST

210 CLEAR COATING

211 COATING

212 COLOR COATING

213 CONTROL DEVICE

214 COLOR MATCH

215 ELECTROSTATIC SPRAY APPLICATION

216 EMISSION CONTROL SYSTEM

217 EXEMPT COMPOUNDS

218 GRAPHIC DESIGN APPLICATION

219 GROUP I VEHICLES

220 GROUP II VEHICLES AND EQUIPMENT

221 HIGH-VOLUME, LOW-PRESSURE (HVLP) SPRAY EQUIPMENT

222 LARGE/HEAVY DUTY TRUCKS

223 LIGHT AND MEDIUM DUTY TRUCKS AND VANS

224 METALLIC/IRIDESCENT TOPCOAT

225 MOBILE EQUIPMENT

226 MOTOR VEHICLE

227 MULTI-COLOR COATING

228 MULTI-STAGE TOPCOAT SYSTEM

229 PRECOAT

230 PRETREATMENT COATING

231 PRIMER
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Revised December 10, 2008 Reg. II, Rule 2.26, Page 2

232 PRIMER SEALER

233 PRIMER SURFACER

234 REDUCER

235 SINGLE-STAGE COATING

236 SOLVENT

237 SPECIALTY COATINGS

238 SPOT REPAIR

239 SURFACE PREPARATION AND CLEANUP

240 TEMPORARY PROTECTIVE COATING

241 TOPCOAT

242 TRANSFER EFFICIENCY

243 TRUCK BED LINER COATING

244 UNDERBODY COATING

245 UNIFORM FINISH COATING

246 VOLATILE ORGANIC COMPOUNDS(VOC)

247 VOLATILE ORGANIC COMPOUND (VOC) CONTENT

300 STANDARDS

301 COATING LIMITS

302 COATING LIMITS

303 MOST RESTRICTIVE VOC LIMIT

304 APPLICATION REQUIREMENTS

305 EMISSION CONTROL SYSTEM

306 STORAGE AND DISPOSAL - GENERAL

307 REQUIREMENTS FOR SURFACE PREPARATION AND CLEANUP 

MATERIALS

308 SPECIALTY COATINGS

309 PRECOAT LIMITATION

310 TOXIC AIR CONTAMINANT

400 ADMINISTRATIVE REQUIREMENTS

401 PROHIBITION OF POSSESSION

402 PROHIBITION OF SPECIFICATION

403 PROHIBITION OF SALE OR MANUFACTURE

404 COMPLIANCE STATEMENT REQUIREMENT

405 LABELING REQUIREMENTS

406 HVLP MARKING

407 OPERATION AND MAINTENANCE PLAN (O&M PLAN)

500 MONITORING AND RECORDS

501 RECORD KEEPING - GENERAL

502 RECORD KEEPING - EMISSION CONTROL SYSTEM

503 RECORD KEEPING - PROHIBITION OF SALE OR MANUFACTURE

504 BURDEN OF PROOF

505 REPORTING
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600 TEST METHODS AND CALCULATIONS

601 GENERAL

602 VOC CONTENT

603 EXEMPT COMPOUNDS

604 EXEMPT COMPOUNDS -METHYL ACETATE, ACETONE, T-BUTYL

ACETATE, AND PARACHLOROBENZOTRIFLUORIDE (PCBTF)

605 CALCULATION OF VOC CONTENT

606 CALCULATION OF VOC CONTENT OF COATING SYSTEM

607 TRANSFER EFFICIENCY

608 HVLP EQUIVALENCY

609 CAPTURE EFFICIENCY

610 CONTROL EFFICIENCY

610 OVERALL CAPTURE AND CONTROL EFFICIENCY

612 IRIDESCENT PARTICLES IN METALLIC/IRIDESCENT TOPCOAT

613 ACID CONCENTRATION IN PRETREATMENT WASH PRIMER
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100 GENERAL

101 PURPOSE: The purpose of this rule is to limit the emission of volatile organic

compounds (VOCs) from coating operations associated with motor vehicles, mobile

equipment, and associated parts and components.

102 APPLICABILITY: The provisions of this rule are applicable to any person who

uses, applies or solicits the use or application of any coating on motor vehicles or

mobile equipment, and their parts and components, or any person who supplies, sells,

offers for sale, manufactures or distributes within the District, any material subject

to the provisions of this rule.

103 SEVERABILITY: If any provision, clause, sentence, paragraph, section or part of

this rule for any reason is judged to be unconstitutional or invalid, such judgement

shall not affect or invalidate the remainder of the rule.

110 EXEMPTION - GENERAL: The provisions of this rule, except for Section 503,

Burden of Proof, shall not apply to the following:

110.1 Application of aerosol coating products.

110.2 Any automotive coating that is 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.

110.3 Any coating applied to motor vehicles or mobile equipment, or their

associated parts and components during manufacture on an assembly line.

110.4 Any automotive coating that is offered for sale, sold or manufactured for use

outside of the District.

111 EXEMPTION - PROHIBITION OF SALE OR MANUFACTURE: The

provisions of Section 403 shall not apply to any automotive coating that is offered

for sale, sold or shipped for reformulation or repackaging, or any coating whose

emissions to the atmosphere are controlled by an emission control system that meets

the requirements of Section 305.

112 EXEMPTION - APPLICATION REQUIREMENTS: The provisions of Section

304 of this Rule shall not apply to the application of underbody coatings, graphic

design applications, truck bed liner coatings, or any coating use of less than one (1)

fluid ounce (29.6 milliliters). 

200 DEFINITIONS

201 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.

202 AEROSOL COATING PRODUCT: A pressurized coating product containing

pigments or resins that dispenses product ingredients by means of a propellant, and
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is packaged in a disposable can for hand-held application, or for use in specialized

equipment for ground traffic/marking applications. 

203 ANTIGLARE/SAFETY COATING: A coating which minimizes light reflection

for safety purposes.

204 ASSEMBLY LINE: An arrangement of industrial equipment and workers in which

the product passes from one specialized operation to another until complete, by either

automatic or manual means.

205 ASSOCIATED PARTS AND COMPONENTS: Any 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” does not include circuit boards.

206 AUTOMOTIVE COATING: Any 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 or mobile equipment refinishing. 

207 AUTOMOTIVE COATING COMPONENT: Any portion of a coating including,

but not limited to, a reducer or thinner, toner, hardener, and additive, which is

recommended by any person to distributors or end-users 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.

208 AUTOMOTIVE REFINISHING FACILITY: Any shop, business, location, or

parcel of land where motor vehicles or mobile equipment or their associated parts

and components are coated, including autobody collision repair shops. “Automotive

Refinishing Facility” does not include the original equipment manufacturing plant

where the motor vehicle or mobile equipment is completely assembled. 

209 CATALYST: A substance whose presence initiates the reaction between chemical

compounds.

210 CLEAR COATING: Any coating that contains no pigments and is labeled and

formulated for application over a color coating or clear coating.

211 COATING: A material which is applied to a surface and forms a film in order to

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

212 COLOR COATING: Any 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. 
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213 CONTROL DEVICE: Equipment such as an incinerator or adsorber used to prevent

air pollutants from reaching the ambient air.

214 COLOR MATCH: The ability of a repair coating to blend into an existing coating

so that color difference is not visible.

215 ELECTROSTATIC SPRAY APPLICATION: Any method of spray application

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

and the paint particles.

216 EMISSION CONTROL SYSTEM: A control device and its associated collection

system.

217 EXEMPT COMPOUNDS: As defined in District Rule 1.1, General Provisions and

Definitions. 

218 GRAPHIC DESIGN APPLICATION: The application of logos, letters, numbers

and graphics to a painted surface, with or without the use of a template by brush,

roller, or airbrush.

219 GROUP I VEHICLES: Passenger cars, large/heavy duty truck cabs and chassis,

light and medium duty trucks and vans, and motorcycles.

220 GROUP II VEHICLES AND EQUIPMENT: Public transit buses and mobile

equipment.

221 HIGH-VOLUME, LOW-PRESSURE (HVLP) SPRAY EQUIPMENT: Spray

equipment permanently labeled as such and which is designed and operated between

0.1 and 10 pounds per square inch (psig) air atomizing pressure measured

dynamically at the center of the air cap and at the air horns.

222 LARGE/HEAVY DUTY TRUCKS: Any truck having a manufacturer's gross

vehicle weight rating of over 30,000 pounds.

223 LIGHT AND MEDIUM DUTY TRUCKS AND VANS: Any truck or van having

a manufacturer's gross vehicle weight rating of 30,000 pounds or less.

224 METALLIC/IRIDESCENT TOPCOAT: Any coating which contains more than

5 g/l (0.042 lb/gal) of metal or iridescent particles, as applied, where such particles

are visible in the dried film.

225 MOBILE EQUIPMENT: Any equipment which may be drawn or is capable of

being driven on rails or on a roadway, including, but not limited to, trains, railcars,

truck bodies, truck trailers, camper shells, mobile cranes, bulldozers, street cleaners,

golf carts and implements of husbandry or agriculture.

226 MOTOR VEHICLE: Any self-propelled vehicle, including but not limited to, cars,

trucks, buses, golf carts, vans, motorcycles, tanks, and armored personnel carriers.
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227 MULTI-COLOR COATING: Any coating that exhibits more than one color in the

dried film after a single application, is packaged in a single container, and hides

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

promoter.

228 MULTI-STAGE TOPCOAT SYSTEM: A topcoat system composed of either a

basecoat / clearcoat (2 stage), a basecoat / midcoat / clearcoat (3 stage), or a

groundcoat / basecoat / midcoat / clearcoat (4 stage).

229 PRECOAT: Any coating which is applied to bare metal primarily to deactivate the

metal surface prior to application of a subsequent water-base primer surfacer. A

precoat shall be a coating that dries by oxidation or chemical polymerization.

230 PRETREATMENT COATING: Any coating which contains a minimum of one

half (0.5) percent acid by weight and not more than 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.

231 PRIMER: Any coating, which is labeled and formulated for application to a

substrate to provide 1) a bond between the substrate and subsequent coats, 2)

corrosion resistance, 3) a smooth substrate surface, or 4) resistance to penetration of

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

pigmented.

232 PRIMER SEALER: Any 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.

233 PRIMER SURFACER: Any coating applied prior to the application of a topcoat for

the purpose of corrosion resistance, adhesion of the topcoat, and which promotes a

uniform surface by filling in surface imperfections.

234 REDUCER: The solvent used to thin enamel.

235 SINGLE-STAGE COATING: Any 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. 

236 SOLVENT: A VOC-containing fluid used to perform surface preparation and

cleaning operations.

237 SPECIALTY COATINGS: Unique coatings and compliant coatings with additives

which are necessary due to unusual job performance requirements. Said coatings

include, but are not limited to, adhesion promoters, uniform finish blenders,

elastomeric materials, gloss flatteners, bright metal trim repair, and anti-glare/safety

coatings.

238 SPOT REPAIR: Repair of an area on a motor vehicle, piece of mobile equipment,

or associated parts or components of less than 1 square foot (929 square centimeters).
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239 SURFACE PREPARATION AND CLEANUP: The removal of contaminants such

as dust, soil, oil, grease, etc., prior to any step in a manufacturing process from parts,

products, tools, machinery, equipment, and general work areas.

240 TEMPORARY PROTECTIVE COATING: Any coating which is labeled and

formulated for the purpose of temporarily protecting areas from overspray or

mechanical damage.

241 TOPCOAT: Any coating applied over a primer, primer system, or an original OEM

finish for the purpose of protection or appearance. For the purposes of this Rule, solid

color and metallic/iridescent AVERAGE topcoats are single stage applications, the VOC

of a multi stage topcoat system will determine compliance with the VOC standards

in Section 301 of this Rule.

242 TRANSFER EFFICIENCY: The ratio of the amount of coating solids adhering to

the object being coated to the total amount of coating solids sprayed, expressed as a

percentage.

243 TRUCK BED LINER COATING: Any 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.

244 UNDERBODY COATING: Any 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.

245 UNIFORM FINISH COATING: Any 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.

246 VOLATILE ORGANIC COMPOUNDS(VOC): As defined in Rule 1.1, General

Provisions and Definitions.

247 VOLATILE ORGANIC COMPOUND (VOC) CONTENT: Weight of VOC per

volume of material as calculated pursuant to the applicable Sections of 600. 

300 STANDARDS

301 COATING LIMITS: Until July 1, 2009, any person who applies coatings to Group

I or II vehicles, mobile equipment, their parts and components, shall comply with

Sections 301.1 or 301.2 of this Rule.
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301.1 Group I Vehicles. A person shall not refinish Group I vehicles, their parts and

components, or Group II vehicles and mobile equipment where color match is

required, using any coating with a regulatoryVOC content in excess of the following

limits, expressed as grams of VOC per liter (or pounds per gallon) of coating applied,

excluding water and exempt compounds

COATING REGULATORY VOC

CONTENT

Pretreatment Coating 780 g/l (6.5 lbs/gal)

Precoat 600 g/l (5.0 lbs/gal)

Primer/Primer surfacer 250 g/l (2.1 lbs/gal)

Primer Sealer 420 g/l (3.5 lbs/gal)

Solid Color Topcoat 420 g/l (3.5 lbs/gal)

Metallic/Iridescent Topcoat 520 g/l (4.3 lbs/gal)

Multi Stage Topcoat System 540 g/l (4.5 lbs/gal)

Specialty Coating 840 g/l (7.0 lbs/gal)

Temporary Protective Coating 60 g/l (0.5 lbs/gal)

301.2 Group II Vehicles and Mobile Equipment. A person shall not finish or

refinish Group II vehicles and equipment or their parts and components

where color match is not required, using any coating with a regulatory VOC

content in excess of the following limits, expressed as grams of VOC per liter

(or pounds per gallon) of coating applied, excluding water and exempt

compounds.

COATING REGULATORY VOC

CONTENT

Pretreatment Coating 780 g/l (6.5 lbs/gal)

Precoat 600 g/l (5.0 lbs/gal)

Primer 250 g/l (2.1 lbs/gal)

Primer Sealer 340 g/l (2.8 lbs/gal)

Topcoat 420 g/l (3.5 lbs/gal)

Metallic/Iridescent Topcoat 420 g/l (3.5 lbs/gal)

Specialty Coating 840 g/l (7.0 lbs/gal)

Temporary Protective Coating 60 g/l (0.5 lbs/gal)
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302 COATING LIMITS: Effective July 1, 2009, 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 605, in excess of the

following limits, except as provided in Section 305:

COATING CATEGORY

REGULATORY VOC

CONTENT

grams/liter (pounds/gallon)

Effective 7/1/2009 Effective 7/1/2010

Adhesion Promoter 840 (7.0) 540 (4.5)

Clear Coating 250 (2.1) 250 (2.1)

Color Coating 420 (3.5) 420 (3.5)

Multi-Color Coating 680 (5.7) 680 (5.7)

Pretreatment Coating 660 (5.5) 660 (5.5)

Primer 250 (2.1) 250 (2.1)

Primer Sealer 340 (2.8) 250 (2.1)

Single-Stage Coating 420 (3.5) 340 (2.8)

Temporary Protective Coating 60 (0.5) 60 (0.5)

Truck Bed Liner Coating 310 (2.6) 310 (2.6)

Underbody Coating 430 (3.6) 430 (3.6)

Uniform Finish Coating 540 (4.5) 540 (4.5)

Any Other Coating Type 250 (2.1) 250 (2.1)

303 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 supplied by a person, 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 302, then the lowest VOC

content limit shall apply.

304 APPLICATION REQUIREMENTS: 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:

304.1 Brush, dip, or roller;

304.2 Electrostatic spray;

304.3 HVLP spray equipment;

304.4 Use of a spray gun: If a spray gun is used, the end user must demonstrate that

the gun meets the HVLP definition in Section 221 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 from the manufacturer of

the gun. 
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304.5 Any alternative method that achieves a transfer efficiency equivalent to, or

higher than, the application methods listed in sections 304.1, 304.2 or 304.3

as determined per section 608. Written approval from the Executive Officer

or Air Pollution Control Officer of the District shall be obtained for each

alternative method prior to use.

305 EMISSION CONTROL SYSTEM: In lieu of complying with the VOC content

limits of Section 301 or 302, a person may use a VOC emission control system that

controls emissions from the source operation provided the following conditions are

met:

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

305.2 The VOC emission control system shall be operated with an overall capture

and control efficiency of at least 85 percent by weight during periods of

emission producing activity.

306 STORAGE AND DISPOSAL - GENERAL: All VOC-containing materials,

whether in its form for intended use or as a waste or used product, including items

such as cloth or paper laden with VOC containing materials, shall be stored in nonabsorbent, non-leaking containers which shall be kept closed at all times, except

when filling or emptying, and disposed of in a manner to prevent evaporation of

VOCs into the atmosphere at the facility.

307 REQUIREMENTS FOR SURFACE PREPARATION AND CLEANUP

MATERIALS: Any solvent cleaning of application equipment, parts, products,

tools, machinery, equipment, general work areas, and the storage and disposal of

VOC-containing materials used in surface preparation and cleanup operations shall

be carried out pursuant to Rule 2.31, Surface Preparation and Cleanup.

308 SPECIALTY COATINGS: Until July 1, 2009, use of all specialty coatings except

antiglare/safety coatings shall not exceed 5.0 percent of all coatings applied, on a

monthly basis. The application of topcoats with a specialty coating used as an

additive shall be subject to the topcoat limits in Sections 301.1 and 301.2 of this

Rule.

309 PRECOAT LIMITATION: Until July 1, 2009, a person shall not use precoat in

excess of 25 %, by volume, of the amount of primer surfacer used on a monthly

basis. Purchase invoices to verify this limitation shall be presented to the Air

Pollution Control Officer upon request.

308 TOXIC AIR CONTAMINANT: No person shall apply a coating to any motor

vehicle, mobile equipment, or associated parts and components, containing cadmium

or hexavalent chromium. 

400 ADMINISTRATIVE REQUIREMENTS

401 PROHIBITION OF POSSESSION: Effective 7/1/2009, no person shall possess

at any automotive refinishing facility, any automotive coating that is not in

compliance with section 302 or 305, as applicable. 
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402 PROHIBITION OF SPECIFICATION: No person shall specify the use of any

coating to be applied to a motor vehicle, mobile equipment, or part or component

subject to the provisions of this rule that does not meet the limits and requirements

of this rule where such applications result in a violation of this rule. The requirements

of this Section shall apply to all written or oral contracts, including, but not limited

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

provisions of this rule is to be used or applied.

403 PROHIBITION OF SALE OR MANUFACTURE: No person shall manufacture,

blend, repackage for sale, supply, sell, offer for sale or distribute within the District

any coating if such product is prohibited by any of the provisions of this Rule.

404 COMPLIANCE STATEMENT REQUIREMENT: The manufacturer or repacker

of coatings subject to this Rule shall provide the following: 

404.1 Until July 1, 2009, separate data sheets designating the VOC content (as

supplied) including any recommended thinning ratio. The VOC content shall

be expressed as grams per liter of coating less water and less exempt

compounds and may be determined by either calculation or analysis. 

404.2 Effective July 1, 2009, product data sheets or an equivalent medium

containing the following information:

a. The actual VOC content and the regulatory VOC content for coatings

expressed in grams per liter;

b. The weight percentage of volatiles, water, and exempt compounds;

c. The volume percentage of water and exempt compounds; and

d. The density of the material in grams per liter.

405 LABELING REQUIREMENTS: Effective July 1, 2009, 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. 

406 HVLP MARKING: A person shall not sell, offer for sale, or distribute for use

within the District any HVLP gun without a permanent marking, or accurate

information provided on company letterhead or in the form of technical literature

clearly identifying the spray gun manufacturer, salesperson or distributer, denoting

the maximum inlet air pressure in psig at which the gun will operate within the

parameters specified in Section 221 of this Rule.

407 OPERATION AND MAINTENANCE PLAN (O&M Plan): Any person using an

emission control device pursuant to Section 305 of this Rule, as a means of

complying with this rule, must submit with the application for Authority to

Construct, pursuant to Rule 3.1, GENERAL PERMIT REQUIREMENTS, an O&M

Plan for the emission control device to the APCO for approval. The O&M Plan shall

specify operation and maintenance procedures which will demonstrate continuous

operation of the control device during periods of emission producing operations. The

O&M Plan shall also specifywhich records must be kept to document these operation

and maintenance procedures. These records shall comply with the requirements of

Sections 501 and 502 of this Rule. Any person using an emission control device must
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fully comply with all O&M Plans submitted for approval, even if such O&M Plans

have not yet been approved, unless notified in writing by the APCO.

500 MONITORING AND RECORDS

501 RECORD KEEPING - GENERAL: Any person using coatings subject to Section

300 of this Rule shall maintain and have available at all time on site the following:

501.1 A current list of all coatings and additives used subject to this rule, including

the following:

a. Material name and manufacturer;

b. Application method;

c. Coating category and mix ratio specific to the coating; and

d. Actual VOC content for coatings and the regulatory VOC content for

coatings, as applied.

501.2 Current manufacturer specification sheets, material data sheets, technical data

sheets, or air quality data sheets, which list the actual VOC content for

coatings and regulatory VOC content for coatings of each ready-to-spray

coating (based on the manufacturer’s stated mix ratio) and automotive

coating components, and the VOC content of each solvent.

501.3 The person shall maintain records on a daily basis including the following

information:

a. Coating and mix ratio of components in the coating used.

b. Quantity of each coating applied.

501.4 Purchase records identifying the coating type, name, and volume of coating.

502 RECORD KEEPING - EMISSION CONTROL SYSTEMS: If compliance with

this rule is achieved through the use of an emission control system, in addition to the

provisions of Section 501, the owner or operator shall maintain:

502.1 Daily usage records of all materials used such as coatings, catalysts,

additives, and reducers.

502.2 Daily records of key operating parameters such as temperatures, pressures,

flowrates, and hours of operation of the control device to verify compliance

of the capture and control device.

502.3 Maintenance work which interferes with the operation of the control device.

503 RECORD KEEPING - PROHIBITION OF SALE OR MANUFACTURE: Any

person claiming an exemption under Section 111 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: 

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

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

503.2 The regulatory VOC content for coatings;
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503.3 The actual VOC content for coatings;

503.4 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; and

503.5 The specific exemption being utilized under Section 111.

504 BURDEN OF PROOF: Any person claiming an exemption pursuant to Section 110

or 111 shall have information available such as product data or material safety data

sheets or records that would allow the APCO to verify the eligibility of the

exemption.

505 REPORTING: All records required by this Rule shall be maintained on site for a

period of two years and made available to the APCO upon request.

600 TEST METHODS AND CALCULATIONS

601 GENERAL: For the purposes of this Rule, the following test methods or calculation

methods shall be used. Other test methods determined to be equivalent and approved

in writing by the District and the EPA may also be used. VOC emissions or other

parameters determined to exceed any limits established by this Rule through the use

of any of the following test methods or calculations shall constitute a violation of this

Rule.

602 VOC CONTENT: The VOC content of coatings, subject to the provisions of this

Rule, shall be determined by procedures contained in EPA Reference Test Method

24 (40 CFR 60, “Determination of Volatile Matter Content, Water Content, Density,

Volume Solids, and Weight Solids of Surface Coatings”).

603 EXEMPT COMPOUNDS: Measurement of exempt compounds 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 South Coast Air Quality Management District

(SCAQMD) Method 303-91 “Determination of Exempt Compounds,” February

1993.

604 EXEMPT COMPOUNDS -METHYL ACETATE, ACETONE, T-BUTYL

ACETATE, AND PARACHLOROBENZOTRIFLUORIDE (PCBTF):

Measurement of methyl acetate, acetone t-butyl acetate and PCBTF, shall be

determined by using ASTM D6133-02, “Standard Test Method for Acetone, pChlorobenzotrifluoride, Methyl Acetate or t-Butyl Acetate Content of Solventborne

and Waterborne Paints, Coatings,Resins, andRaw Materials by Direct Injection Into

a Gas Chromatograph”. 
Yolo-Solano AQMD

Revised December 10, 2008 Reg. II, Rule 2.26, Page 15

605 CALCULATION OF VOC CONTENT: The VOC content per volume of coating

shall be calculated as follows:

605.1 The regulatory VOC content per volume of coating shall be calculated less

water and less exempt compounds as follows:

VOCcon s w ec = W - W - W

Vmwec - V - V

Where: VOCcon= Grams of VOC per liter of material

Ws = Weight of volatile compounds in grams

Ww = Weight of water in grams

Wec = Weight of exempt compounds in grams

Vm = Volume of coating materials in liters

Vw = Volume of water in liters

Vec = Volume of exempt compounds in liters

605.2 The actual VOC content per volume of coating shall be calculated by the

following equation:

VOCcon s w ec = ( W - W - W )

Vm

Where: VOCcon= Grams of VOC per liter of material

Ws = Weight of volatile compounds in grams

Ww = Weight of water in grams

Wec = Weight of exempt compounds in grams

Vm = Volume of material in liters

606 CALCULATION OF VOC CONTENT OF COATING SYSTEM: Until July 1,

2009, the VOC content of a basecoat/clearcoat coating system shall be calculated

according to the following formula:

VOCAVERAGE = BC CC VOC + 2VOC

3

The VOC content of a three stage coating system shall be calculated according to the

following formula:

VOCAVERAGE = BC MC CC VOC + VOC + 2VOC

 4 

The VOC content of a four stage coating system shall be calculated according to the

following formula:

VOCAVERAGE = GC BC MC CC VOC + VOC + VOC + 2VOC

5
Yolo-Solano AQMD

Revised December 10, 2008 Reg. II, Rule 2.26, Page 16

Where:

VOCAVERAGE = The average of the VOC content, as applied, and used to

determine compliance with the standards in Section 301 of

this Rule.

VOCGC = The VOC content, as applied, of a pigmented

groundcoat or tinted primer sealer.

VOCBC = The VOC content, as applied, of a pigmented

basecoat.

VOCMC = The VOC content, as applied, of a translucent

midcoat.

2VOCCC = The VOC content, as applied, of a transparent

clearcoat.

607 TRANSFER EFFICIENCY: Transfer efficiency as required by Section 303 of this

Rule shall be determined in accordance with the SCAQMD method "Spray

Equipment Transfer Efficiency Test Procedure for Equipment User,” May 24, 1989.

608 HVLP EQUIVALENCY: Spray equipment HVLP equivalency shall be determined

by using South Coast Air Quality Management District “Guidelines for

Demonstrating Equivalency with District Approved Transfer Efficient Spray Guns”

September 26, 2002.

609 CAPTURE EFFICIENCY: The capture efficiency of a VOC emission control

system’s 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.

610 CONTROL EFFICIENCY: The control efficiency of a VOC emission control

system’s collection device shall be determined by using EPA Methods 2, 2A, or 2D

for measuring flow rates and EPA Method 25, 25A, or 25B for measuring total

gaseous organic concentrations at the inlet and outlet of the control device. EPA

Method 18 or CARB Method 422 shall be used to determine the emissions of exempt

compounds.

611 OVERALL CAPTURE AND CONTROL EFFICIENCY: For VOC emission

control systems that consist of a single VOC emission control device, the overall

capture and control efficiency shall be calculated by using the following equation: 

CEoverall = [CEcapture x CEcontrol] / 100% 

Where: CEoverall = Overall Capture and Control Efficiency

CEcapture = Capture Efficiency of the collection device*

CEcontrol = Control Efficiency of the collection device**

*As determined in Section 609

**As determined in Section 610

612 IRIDESCENT PARTICLES IN METALLIC/IRIDESCENT TOPCOAT:

Iridescent particles in metallic/iridescent topcoat as defined, in Section 224 of this

Rule shall be determined by the SCAQMD Method 318 "Determination of Weight

Percent Elemental Metal in Coatings by x-Ray Diffraction.”
Yolo-Solano AQMD

Revised December 10, 2008 Reg. II, Rule 2.26, Page 17

613 ACID CONCENTRATION IN PRETREATMENT WASH PRIMER: Acid

concentration in pretreatment coating as defined in Section 230 of this Rule shall be

determined by using ASTM D1613-06 “Standard Test Method for Acidity in Volatile

Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related

Products”.