April 9, 1998

Placer County APCD 234 - 1 Rules and Regulations

RULE 234 AUTOMOTIVE REFINISHING OPERATIONS

Adopted 11-03-94 

(Amended 8-24-95, 8-8-96, 4-9-98) 

CONTENTS

100 GENERAL

101 PURPOSE 

102 APPLICABILITY 

103 EXEMPTION FROM RULE 219 

104 EXEMPTION, TOUCH-UP 

105 EXEMPTION, GRAPHIC DESIGN APPLICATIONS 

106 EXEMPTION, MILITARY VEHICLES AND GROUND SUPPORT EQUIPMENT 

107 EXEMPTION, RADIATORS AND ENGINE COMPONENTS 

108 EXEMPTION, AEROSOL PAINT PRODUCTS 

109 LIMITED EXEMPTION, SELF CONTAINED COATING APPLICATION 

110 LIMITED EXEMPTION, SMALL PRODUCTION UTILITY BODIES 

200 DEFINITIONS

201 AEROSOL PAINT PRODUCT 

202 ANTIGLARE/SAFETY COATING 

203 CAMOUFLAGE COATING 

204 CAPTURE EFFICIENCY 

205 CONTROL EFFICIENCY 

206 CATALYST 

207 COATING 

208 COLOR MATCH 

209 ELECTROSTATIC APPLICATION 

210 EXEMPT COMPOUNDS 

211 FINISHING 

212 GRAMS OF VOC PER LITER OF COATING EXCLUDING WATER AND EXEMPT 

COMPOUNDS 

213 GRAMS OF VOC PER LITER OF MATERIAL 

214 GRAPHIC DESIGN APPLICATION 

215 GROUND SUPPORT EQUIPMENT 

216 GROUP I VEHICLES 

217 GROUP II VEHICLES AND EQUIPMENT 

218 HIGH VOLUME, LOW PRESSURE (HVLP) SPRAY APPLICATOR 

219 LACQUER 

220 LARGE/HEAVY DUTY TRUCK 

221 LIGHT AND MEDIUM DUTY TRUCK OR VAN 

222 METALLIC COATING TOPCOAT 

223 MOBILE EQUIPMENT 

224 MULTI STAGE TOPCOAT SYSTEM 

225 PRECOAT 

226 PRETREATMENT WASH PRIMER 

227 PRIMER 

228 PRIMER SEALER 

229 PRIMER SURFACER 

230 REDUCER 

231 REFINISHING 

232 SPECIALTY COATING 

233 TEMPORARY PROTECTIVE COATING 

234 TOPCOAT 

235 TOUCH-UP 

236 TRANSFER EFFICIENCY 

237 UTILITY BODY 

238 VOLATILE ORGANIC COMPOUNDS (VOC) 
April 9, 1998

Rules and Regulations 234 - 2 Placer County APCD 

300 STANDARDS 

301 LIMITS 

302 OPERATION AND MAINTENANCE PLAN 

303 TRANSFER EFFICIENCY 

304 SURFACE PREPARATION AND SOLVENT LOSS MINIMIZATION 

305 SPECIALTY COATINGS 

306 TEMPORARY PROTECTIVE COATING 

307 PRECOAT LIMITATION 

308 HVLP MARKING 

400 ADMINISTRATIVE REQUIREMENTS

401 PROHIBITION OF SPECIFICATION 

402 PROHIBITION OF SALE 

403 VOC COMPLIANCE STATEMENT REQUIREMENT 

404 CALCULATION FOR VOC MASS EMISSION RATE AND CONTROL EFFICIENCY 

500 MONITORING AND RECORDS

501 USER COATING RECORDS 

502 HIGH VOC EMISSIONS RECORDS 

503 PRECOAT LIMITATION RECORDS 

504 EMISSION CONTROL EQUIPMENT RECORDS 

505 SALES RECORDS 

506 TEST METHODS 
April 9, 1998

Placer County APCD 234 - 3 Rules and Regulations

100 GENERAL

101 PURPOSE: To limit the emission of volatile organic compounds from finishing or refinishing 

of Group I and Group II Vehicles and Equipment as defined in this rule. 

102 APPLICABILITY: The provisions of this rule apply only to facilities located in the 

Sacramento Valley Air Basin portion of Placer County, as defined by California Code of 

Regulations, Title 17, Division 3, Chapter 1, Subchapter 1.5, Article 1, Section 60106. 

103 EXEMPTION FROM RULE 219: The provisions of Rule 219, Organic Solvents, shall not 

apply to the refinishing of vehicles and equipment as defined in Rule 234. 

104 EXEMPTION, TOUCH-UP: The provisions of this rule shall not apply to touch-up operations. 

105 EXEMPTION, GRAPHIC DESIGN APPLICATION: The provisions of this rule shall not apply 

to application of graphic designs. 

106 EXEMPTION, MILITARY VEHICLES AND GROUND SUPPORT EQUIPMENT: The 

provisions of this rule shall not apply to the coating of military vehicles and ground support 

equipment. 

107 EXEMPTION, RADIATORS: The provisions of this rule shall not apply to the coating of 

radiators and engine parts. 

108 EXEMPTION, AEROSOL PAINT PRODUCTS: The provisions of this rule shall not apply to 

the application of aerosol paint products from non-refillable aerosol containers having a 

capacity of one liter (34 fluid ounces), or less. 

109 LIMITED EXEMPTION, SELF-CONTAINED COATING APPLICATION: The provisions of 

Section 302, shall not apply to the application of high viscosity or thixotropic coatings with 

application equipment that is supplied with and is an integral part of the coating container. 

110 LIMITED EXEMPTION, SMALL PRODUCTION/UTILITY BODIES: The provisions of 

Section 301, shall not apply to coatings applied to small production and utility bodies that 

must match the vehicles upon which they will be mounted. When production is less than or 

equal to 20 vehicles per day, any coating with a VOC content not in excess of the standards 

set forth in Section 301.1 can be used. If production is greater than 20 vehicles per day, any 

coating with a VOC content not in excess of the standards set forth in Section 301.2 can be 

used. Daily records shall be maintained on the number of utility bodies coated each day and 

such records shall be retained for the previous five (5) year period and be available at the 

time of inspection. 

200 DEFINITIONS

201 AEROSOL PAINT PRODUCT: A coating product containing pigments or resins that 

dispenses product ingredients by means of a propellant, and is packaged in a non-refillable 

can for hand-held application. 

202 ANTIGLARE/SAFETY COATING: A coating which minimizes light reflection for safety 

purposes. 

203 CAMOUFLAGE COATING: A coating applied on motor vehicles to conceal such vehicles 

from detection. 

204 CAPTURE EFFICIENCY: The fraction, in percent, of all VOC's generated by a process that 

are directed to an abatement or recovery device. 

205 CONTROL EFFICIENCY: The fraction, in percent, of pollution prevented by a control device 

and the pollution introduced to the control device. 
Where: 

(V - V - V )

(W - W - W ) G = eswm

esws

voc

Gvoc = Grams VOC per liter of coating excluding water and exempt compounds. 

Ws = Weight of volatile compounds in grams. 

Ww = Weight of water in grams. 

Wes = Weight of exempt compounds in grams. 

Vm = Volume of material in liters. 

Vw = Volume of water in liters. 

 Ves = Volume of exempt compounds (as defined in Rule 102, Definitions), in liters. 

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

compounds. 

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

beautify and/or protect such surface. 

208 COLOR MATCH: The ability of a repair coating to blend into an existing coating so that color 

difference is not visible. 

209 ELECTROSTATIC APPLICATION: The application of charged atomized paint droplets 

which are deposited by electrostatic attraction. 

210 EXEMPT COMPOUNDS: For the purpose of this Rule, exempt compounds are as defined in 

Rule 102, Definitions. 

211 FINISHING: The coating of incomplete vehicles, their parts and components, or mobile 

equipment for which the original coating was not applied from an Original Equipment 

Manufacturing (OEM) plant coating assembly line. 

212 GRAMS OF VOC PER LITER OF COATING EXCLUDING WATER AND EXEMPT 

COMPOUNDS: The weight of VOC per combined volume of VOC and coating solids. It can 

be calculated by the following equation: 

(V - V - V )

(W - W - W ) G = eswm

esws

voc

Where: 

Gvoc = Grams VOC per liter of coating excluding water and exempt compounds. 

Ws = Weight of volatile compounds in grams. 

Ww = Weight of water in grams. 

Wes = Weight of exempt compounds in grams. 

Vm = Volume of material in liters. 

Vw = Volume of water in liters. 

Ves = Volume of exempt compounds (as defined in Rule 102, Definitions), in 

liters. 

213 GRAMS OF VOC PER LITER OF MATERIAL: The weight of VOC per volume of material. It 

can be calculated by the following equation: 

Ws – Ww – Wec 

Grams of VOC per Liter of Material = -------------------------- 

Vm 

April 9, 1998

Rules and Regulations 234 - 4 Placer County APCD 
Where: 

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 

214 GRAPHIC DESIGN APPLICATION: The application of logos, letters, numbers and graphics 

to a painted surface, with or without the use of a template. 

215 GROUND SUPPORT EQUIPMENT: Vehicles used in support of aircraft activities at airports. 

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

medium duty trucks and vans, and motorcycles. 

217 GROUP II VEHICLES: Public transit buses and mobile equipment. 

218 HIGH VOLUME, LOW PRESSURE (HVLP) SPRAY APPLICATOR: Equipment used to 

apply coatings by means of a gun which is designed to be operated and which is operated 

between 0.1 and 10 psig air atomized pressure measured dynamically at the center of the air 

cap and at the air horns. 

219 LACQUER: A coating that dries primarily by solvent evaporation and is resoluble in its 

original solvent. 

220 LARGE/HEAVY DUTY TRUCK: A truck having a manufacturer's gross vehicle weight rating 

of over 30,000 pounds. 

221 LIGHT AND MEDIUM DUTY TRUCK OR VAN: A truck or van having a manufacturer's 

gross vehicle weight rating of 30,000 pounds or less. 

222 METALLIC COATING TOPCOAT: A coating which contains more than 5 g/l (0.042 lb/gal) of 

metal particles, as applied, where such particles are visible in the dried film. 

223 MOBILE EQUIPMENT: 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. 

224 MULTI STAGE TOPCOAT SYSTEM: A topcoat system composed of either a basecoatclearcoat, a basecoat-midcoat-clearcoat, or a groundcoat-basecoat-midcoat-clearcoat. 

The VOC content of a basecoat-clearcoat coating system shall be calculated according to the 

following formula: 

3

VOC 2 + VOC VOC = 

bc cc

Total

The VOC content of a 3 Stage coating system shall be calculated according to the following 

formula: 

4

VOC + VOC 2 + VOC VOC = 

bc mc cc

Total

The VOC content of a 4 Stage coating system shall be calculated according to the following 

formula: 

April 9, 1998

Placer County APCD 234 - 5 Rules and Regulations

5

VOC + VOC + VOC 2 + VOC

VOC = 

gc bc mc cc

Total
April 9, 1998

Rules and Regulations 234 - 6 Placer County APCD 

Where: 

VOCTotal = The sum of the VOC content, as applied and used to determine 

compliance with Section 301. 

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 = Two times the VOC content, as applied, of a transparent clearcoat. 

225 PRECOAT: A coating which is applied to bare metal primarily to deactivate the metal surface 

prior to application of a subsequent water-base primer surfacer. Effective January 1, 1997, 

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

must not be a lacquer product. Purchase invoices must be retained to verify that usage of 

precoat is no more than 25%, by volume, of primer/surfacer usage. 

226 PRETREATMENT WASH PRIMER: A coating which contains a minimum of 0.5 percent acid 

by weight to provide surface etching, and which is applied directly to bare metal surfaces to 

provide corrosion resistance and topcoat adhesion. 

227 PRIMER: A coating applied prior to the application of a topcoat for the purpose of corrosion 

resistance and adhesion of the topcoat. Primer surfacer and primer sealer shall be 

considered a primer when applied to Group II vehicles. 

228 PRIMER SEALER: A coating applied for the purpose of sealing the underlying metal or 

coating system prior to the application of a topcoat. 

229 PRIMER SURFACER: A 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. 

230 REDUCER: The solvent used to thin enamel. 

231 REFINISHING: The coating of vehicles, their parts and components, or mobile equipment, 

including partial body collision repairs, for the purpose of protection or beautification and 

which is subsequent to the original coating applied at an Original Equipment Manufacturing 

(OEM) plant coating assembly line. 

232 SPECIALTY COATING: A unique coating containing additives which are necessary due to 

unusual job performance requirements. Specialty 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. 

233 TEMPORARY PROTECTIVE COATING: A coating applied to areas adjacent to those being 

painted, for the purpose of protecting those areas from overspray. The temporary protective 

coating is removed after primer or topcoat applications. 

234 TOPCOAT: A 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 

topcoats are single stage applications, the VOCTotal of a multi stage topcoat system will 

determine compliance with VOC standards in Section 301. 

235 TOUCH-UP: The application of a coating by brush, air brush, or hand held, non-refillable 

aerosol cans, to repair minor surface damage and imperfections less than four square feet in 

area. 

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

being coated to the total amount of coating solids used in the application process, expressed 

as a percentage. 
April 9, 1998

Placer County APCD 234 - 7 Rules and Regulations

237 UTILITY BODY: A special purpose service compartment or unit that will be bolted, welded, 

or affixed onto an existing cab and chassis. The compartment may serve as storage for 

equipment or parts. 

238 VOLATILE ORGANIC COMPOUND (VOC): Any chemical compound containing at least one 

atom of carbon except for the Exempt Compounds listed in Rule 102, Definitions. 

300 STANDARDS 

301 LIMITS: Any person who applies coatings to Group I or II vehicles, mobile equipment, or 

their parts and components, shall comply with Sections 301.1 and 301.2 of this rule, as 

applicable. 

301.1 Group I Vehicles: A person shall not refinish Group I Vehicles (or Group II Vehicles 

where color match is required), or their parts and components, using any coating with 

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

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

(as defined in Rule 102) unless emissions to the atmosphere are controlled to an 

equivalent level by air pollution abatement equipment with an overall control 

efficiency (capture and control), as determined in Sections 506.4 and 506.5, of at 

least 85 percent and which has been approved in writing by the Air Pollution Control 

Officer. Pursuant to Section 302, any person seeking to utilize such abatement 

equipment shall submit an Operation and Maintenance Plan at least 90 days in 

advance of the date on which abatement equipment control is to be used in lieu of 

compliance with VOC content limitations. Submittal of an application for Authority to 

Construct per Rule 501, General Permit Requirements, will also be required. 

COATING JANUARY 1, 1996 

VOC 

JANUARY 1, 1997 

VOC 

JANUARY 1, 1998 

VOC 

Pretreatment Wash 

Primer 

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

Precoat 780 g/l (6.5 lbs/gal) 600 g/l (5.0 lbs/gal) 600 g/l (5.0 lbs/gal) 

Primer/Primer 

Surfacer 

720 g/l (6.0 lbs/gal) 340 g/l (2.8 lbs/gal) 250 g/l (2.1 lbs/gal) 

Primer Sealer 720 g/l (6.0 lbs/gal) 600 g/l (5.0 lbs/gal 420 g/l (3.5 lbs/gal) 

Solid Color Topcoat 720 g/l (6.0 lbs/gal) 600 g/l (5.0 lbs/gal) 420 g/l (3.5 lbs/gal) 

Metallic Topcoat 720 g/l (6.0 lbs/gal) 600 g/l (5.0 lbs/gal) 520 g/l (4.3 lbs/gal) 

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

Multi Stage Topcoat 

System 

720 g/l (6.0 lbs/gal) 600 g/l (5.0 lbs/gal) 540 g/l (4.5 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, using any coating with a 

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

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

(as defined in Rule 102) unless emissions to the atmosphere are controlled to an 

equivalent level by air pollution abatement equipment with an overall control 

efficiency (capture and control), as determined in Sections 506.4 and 506.5, of at 

least 85 percent and which has been approved in writing by the Air Pollution Control 

Officer. Pursuant to Section 302, any person seeking to utilize such abatement 

equipment shall submit an Operation and Maintenance Plan at least 90 days in 

advance of the date on which abatement equipment control is to be used in lieu of 
April 9, 1998

Rules and Regulations 234 - 8 Placer County APCD 

compliance with VOC content limitations. Submittal of an application for Authority to 

Construct per Rule 501, General Permit Requirements, will also be required. 

COATING JANUARY 1, 1996 

VOC 

JANUARY 1, 1997 

VOC 

JANUARY 1, 1998 

VOC 

Pretreatment 

Wash Primer 

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

Precoat 780 g/l (6.5 lbs/gal) 600 g/l (5.0 lbs/gal) 600 g/l (5.0 lbs/gal) 

Primer/Primer 

Surfacer 

340 g/l (2.8 lbs/gal) 340 g/l (2.8 lbs/gal) 250 g/l (2.1 lbs/gal) 

Primer Sealer 420 g/l (3.5 lbs/gal) 340 g/l (2.8 lbs/gal) 340 g/l (2.8 lbs/gal) 

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

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

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

Camouflage 420 g/l (3.5 lbs/gal) 420 g/l (3.5 lbs/gal) 420 g/l (3.5 lbs/gal) 

301.3 Utility Body Requirements: The standards set forth in Section 301.1 shall apply to 

the coating of utility bodies only when color match is required and the volume of utility 

bodies to be coated is 20 per day or less. If both of these conditions do not apply, 

the standards set forth in Section 301.2 shall apply to the coating of utility bodies. 

302 OPERATION AND MAINTENANCE PLAN: Any person using air pollution abatement 

equipment pursuant to Section 301 shall submit an Operation and Maintenance Plan for the 

emissions control equipment to the Air Pollution Control Officer for approval. The Plan shall 

specify operation and maintenance procedures which will demonstrate continuous operation 

and compliance of the emissions control equipment during periods of emissions-producing 

operations. The Plan shall also specify which daily records must be kept to document these 

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

of Section 504. The Plan shall be implemented upon approval by the Air Pollution Control 

Officer. 

303 TRANSFER EFFICIENCY: Effective January 1, 1998, for all coatings, a person shall not 

apply any coating to any Group I or II vehicles or mobile equipment or their parts and 

components unless one of the following methods is used: 

303.1 Electrostatic application equipment, operated in accordance with the manufacturer's 

recommendations; 

303.2 High Volume Low Pressure (HVLP) spray equipment, operated in accordance with 

the manufacturer's recommendations; 

303.3 Any other equivalent coating application method which has been demonstrated to 

have a transfer efficiency of 65% or greater according to the requirements of Section 

506.3, Determination of Transfer Efficiency, and which has been submitted to and 

approved by the Air Pollution Control Officer. 

304 SURFACE PREPARATION AND SOLVENT LOSS MINIMIZATION: Any person using 

organic solvent for surface preparation and cleanup or mixing, using or disposing of coating 

or stripper containing organic solvent: 

304.1 Shall use closed, nonabsorbent containers for the storage or disposal of cloth or 

paper used for solvent surface preparation and cleanup. 
April 9, 1998

Placer County APCD 234 - 9 Rules and Regulations

304.2 Shall store fresh or spent solvent, coating, catalyst, thinner, or reducer in closed 

containers when not in use. 

304.3 Shall not, effective January 1, 1997, use organic compounds for the cleanup of spray 

equipment including paint lines unless an enclosed system or other system that has 

been approved in writing for use by the Air Pollution Control Officer and submitted to 

and approved by the Air Resources Board (ARB) and U.S. EPA, is used for cleanup. 

The system must enclose spray guns, cups, nozzles, bowls and other parts during 

washing, rinsing and draining procedures. Equipment used shall minimize the 

evaporation of organic compounds to the atmosphere. 

304.4 Effective January 1, 1997, the VOC content of surface preparation solvent shall not 

exceed 72 g/l (0.6 lb/gal), excluding water and exempt compounds. This limit shall 

not apply to surface preparation material applied from a hand-held spray bottle for the 

removal of road tar, engine oil, grease, overspray, or adhesives, from the vehicle, or 

used to clean plastic parts. The VOC content of surface preparation solvent used to 

remove road tar, engine oil, grease, overspray, or adhesives, from the vehicle, or 

used to clean plastic parts shall not exceed 780 g/l (6.5 lbs/gal), excluding water and 

exempt compounds. 

305 SPECIALTY COATING: Use of all specialty coatings except antiglare/safety coatings shall 

not exceed 5.0% of all coatings applied, on a monthly basis. 

306 TEMPORARY PROTECTIVE COATING: A person shall not use any temporary protective 

coating with a VOC content in excess of 60 g/l (0.5 lbs/gal), of material. 

307 PRECOAT LIMITATION: A person shall not use precoat in excess of 25%, by volume, of the 

amount of primer surfacer used, on a monthly basis. 

308 HVLP MARKING: Effective April 3, 1995, a person shall not sell or offer for sale for use 

within the District any HVLP 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 218. 

400 ADMINISTRATIVE REQUIREMENTS 

401 PROHIBITION OF SPECIFICATION: No person shall solicit or require for use or specify the 

application of a coating on a Group I or II vehicle, mobile equipment, or part or component 

thereof if such use or application results in a violation of the provisions of this rule. The 

prohibition of this Section will apply to all written or oral contracts under the terms of which 

any coating which is subject to the provisions of this rule is to be applied to any motor vehicle, 

mobile equipment, or part or component at any physical location within the District. 

402 PROHIBITION OF SALE: A person shall not offer for sale or sell within the District any 

coating if such product is prohibited by any of the provisions of this rule. The prohibition of 

this section shall apply to the sale of any coating which will be applied at any physical 

location within the jurisdiction of the local air pollution control agencies. This requirement 

shall not apply to the application of coatings where emissions to the atmosphere are 

controlled to an equivalent level of this rule by air pollution abatement equipment with an 

overall efficiency (capture and control) as determined in Sections 506.4 and 506.5, of at least 

85 percent and which has been approved in writing by the Air Pollution Control Officer. 

403 VOC COMPLIANCE STATEMENT REQUIREMENT: The manufacturer of coatings subject 

to this rule shall include a designation of VOC (as defined in Section 238 of this rule) as 

supplied and as applied, expressed in grams per liter (or pounds per gallon), excluding water 

and exempt compounds, on data sheets. The manufacturer of temporary protective coatings 

shall indicate the VOC designation as grams per liter (or pounds per gallon) of material. 

404 CALCULATION FOR VOC MASS EMISSION RATE AND CONTROL EFFICIENCY: The 

VOC mass emission rate shall be calculated both upstream and downstream of the 

emissions control device based on the respective VOC mass concentration and volumetric 

flowrate, pursuant to Section 506.4 and the following equation: 
April 9, 1998

Rules and Regulations 234 - 10 Placer County APCD 

M = (Q)(C)(60 min/hr) 

Where: M = VOC mass emission rate, in lb/hr. 

Q = The volumetric flowrate of the exhaust stack, in scfm. 

C = The VOC mass concentration, in lb/scf, as measured by EPA Method 25. 

The percent control efficiency is calculated as follows: 

% CE = [(MU - MD)  MU] x 100 

Where: CE = Control efficiency. 

MU = The upstream VOC mass emission rate, in lb/hr. 

MD = The downstream VOC mass emission rate, in lb/hr. 

500 MONITORING AND RECORDS 

501 USER COATING RECORDS: Operators of facilities subject to this Rule shall maintain a 

current listing of all as-applied VOC containing materials in use at their facility. This listing 

shall include: 

a. material name and manufacturer identification; 

b. application method; 

c. material type, group number (I or II) and specific use instructions (such as "precoat must 

be applied to bare metal and followed with a compliant primer"); 

d. specific mixing instructions; 

e. maximum VOC content of coatings as applied (including reducing solvents); 

Current coating manufacturing specification sheets, material data sheets or current air quality 

data sheets, which list the VOC content of each material, shall be available for review on site. 

A record of the total facility VOC emissions shall be maintained on a monthly basis. These 

records shall be summarized for the previous calendar year and submitted to the District by 

June 1. Such records shall be retained and available for inspection by the District for the 

previous three (3) year period, except for sources subject to Rule 507, Federal Operating 

Permit Program, which shall retain records for five (5) years. 

502 HIGH VOC EMISSIONS: If VOC emissions for any calendar year exceed 10,000 pounds, 

recordkeeping requirements in addition to those listed in Section 501, will be required per 

Rule 511, Potential to Emit.

503 PRECOAT LIMITATION RECORDS: Any person using precoat shall verify compliance with 

Section 307 by retaining purchase invoices and records of applied volume of precoat on a 

monthly basis. Such records shall be retained for the previous three (3) year period and 

made available for inspection upon request. 

504 EMISSION CONTROL EQUIPMENT RECORDS: Any person using emissions control 

equipment pursuant to Section 302 as a means of complying with this rule shall maintain 

such records as required by the Operation and Maintenance Plan in Section 302 on a daily 

basis, to include such records as required by Sections 501, 502, and 503. 

505 SALES RECORDS: Any person within the District selling coatings subject to this Rule shall 

make receipts of customer purchases available for inspection upon request. Cash sales shall 

be recorded including the customer's name and business card. This information can be 

submitted to the District in electronic data form. 
506 TEST METHODS:

506.1 Analysis of Samples: Samples of volatile organic compounds as specified in 

Sections 301.1, and 301.2, of this rule shall be analyzed as prescribed by EPA 

Reference Method 24. 

506.2 Determination of Emissions: Emissions of volatile organic compounds as specified in 

Section 301.1, and 301.2, of this rule shall be measured as prescribed by EPA 

Reference Method 25. 

506.3 Determination of Transfer Efficiency: Transfer efficiency as required by Section 302, 

of this rule shall be determined in accordance with the South Coast Air Quality 

Management District (SCAQMD) test method for determining transfer efficiency 

entitled, "Spray Equipment Transfer Efficiency (TE) Test Procedure for Equipment 

User, May 24, 1989," or other equivalent method which has been approved in writing 

by the Air Pollution Control Officer and submitted to and approved by U.S. EPA. 

506.4 Determination of Control Efficiency: Control efficiency as required by Sections 301.1 

and 301.2 of this rule, shall be determined in accordance with EPA Method 18, 25, 

25A, EPA Method 2 or 2C (whichever is applicable), and Section 404. 

506.5 Determination of Capture Efficiency: Capture efficiency as required by Section 

301.1, and 301.2, of this rule shall be determined by and reported in accordance with 

40 CFR 52.741, Appendix B, "VOC Measurement Techniques for Capture 

Efficiency". 

506.6 Determination of Metallic Particles in Metallic Coating Topcoat: Metallic particles in 

metallic coating topcoat as defined, in Section 222, of this rule shall be determined by 

the South Coast Air Quality Management District (SCAQMD) Method 311 Analysis of 

Percent Metal in Metallic Coatings by Spectrographic Method contained in the 

SCAQMD "Laboratory Method of Analysis for Enforcement Samples" manual. 

506.7 Determination of Acid Concentration in Pretreatment Wash Primer: Acid 

concentration in pretreatment wash primer as defined in Section 226, of this rule shall 

be determined by ASTM Test Method D-1613-85 (modified).

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Placer County APCD 234 - 11 Rules and Regulations
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Rules and Regulations 234 - 12 Placer County APCD