SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

May 23, 2002 466-1 

RULE 466 - SOLVENT CLEANING 

Adopted 5-23-02 

INDEX 

100 GENERAL

101 PURPOSE 

102 APPLICABILITY 

103 SEVERABILITY 

110 EXEMPTIONS 

200 DEFINITIONS 

201 ADHESIVE 

202 AEROSOL CLEANERS 

203 APPLICATION EQUIPMENT 

204 APPURTENANCES 

205 ARCHITECTURAL COATINGS 

206 ARCHITECTURAL COATINGS APPLICATION EQUIPMENT CLEANING 

207 CLOSED CONTAINER 

208 COATING 

209 DEGREASER 

210 ELECTRICAL APPARATUS COMPONENTS 

211 ELECTRONIC COMPONENTS 

212 ENCLOSED GUN CLEANER 

213 EXEMPT COMPOUND 

214 HIGH PRECISION OPTICS 

215 HOT-LINE TOOL 

216 INK 

217 JANITORIAL CLEANING 

218 KEY SYSTEM OPERATING PARAMETERS 

219 LEAK 

220 MAINTENANCE CLEANING 

221 MANUFACTURING PROCESS 

222 MEDICAL DEVICE 

223 NON-ABSORBENT CONTAINER 

224 NON-ATOMIZED SOLVENT FLOW 

225 NON-COMPLIANT SOLVENT 

226 NON-LEAKING CONTAINER 

227 PLATELET DEVICES 

228 POLYESTER RESIN 

229 PREFABRICATED ARCHITECTURAL COMPONENTS 

230 PRODUCT CLEANING 

231 RADIATION EFFECT COATING 

232 REPAIR CLEANING 

233 REPAIR PROCESS 

234 SCIENTIFIC INSTRUMENT 

235 SOLVENT 

236 SOLVENT CLEANING 

237 SOLVENT FLUSHING 

238 STERILIZATION INDICATING INK 

239 STATIONARY SOURCE 

240 VOLATILE ORGANIC COMPOUND (VOC) 

241 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED 

242 WIPE CLEANING 
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466-2 May 23, 2002 

300 STANDARDS

301 VOC STANDARDS 

302 CLEANING DEVICES AND METHODS REQUIREMENTS 

303 STORAGE AND DISPOSAL REQUIREMENTS 

304 EMISSIONS CONTROL EQUIPMENT 

400 ADMINISTRATIVE REQUIREMENTS

401 COMPLIANCE SCHEDULE 

402 CALCULATION FOR DETERMINING VOC CONTENT OF CLEANING SOLVENT 

INCLUDING WATER AND EXEMPT COMPOUNDS 

403 CALCULATION FOR DETERMINING PERCENT CONTROL EFFICIENCY AND VOC 

MASS EMISSION RATE 

404 OPERATION AND MAINTENANCE PLAN 

405 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS 

500 MONITORING AND RECORDS 

501 RECORDKEEPING 

502 TEST METHODS 
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May 23, 2002 466-3 

100 GENERAL

101 PURPOSE: To reduce the emissions of volatile organic compounds from solvent cleaning 

operations and activities, and from the storage and disposal of new and spent cleaning 

solvents. 

102 APPLICABILITY: Except as provided in Section 110, this rule applies to all persons who use 

VOC-containing materials in solvent cleaning operations during the production, repair, 

maintenance or servicing of parts, products, tools, machinery, or equipment, or in general 

work areas, and to all persons who store and dispose of VOC-containing materials used in 

solvent cleaning. The rule also applies to sellers of VOC-containing materials for use in 

solvent cleaning operations. 

103 SEVERABILITY: If a court of competent jurisdiction issues an order that any provision of this 

rule is invalid, it is the intent of the Board of Directors of the District that other provisions of 

this rule remain in full force and effect, to the extent allowed by law. 

110 EXEMPTIONS:

110.1 The provisions of this rule do not apply to cleaning operations specifically subject to 

requirements under the following rules: 

a. Rule 444 – PETROLEUM SOLVENT DRY CLEANING; 

b. Rule 450 – GRAPHIC ARTS OPERATIONS; 

c. Rule 451 – SURFACE COATING OF MISCELLANEOUS METAL PARTS 

AND PRODUCTS; 

d. Rule 452 – CAN COATING; 

e. Rule 454 – DEGREASING OPERATIONS 

f. Rule 456 – AEROSPACE ASSEMBLY AND COMPONENT COATING 

OPERATIONS; 

g. Rule 459 – AUTOMOTIVE, TRUCK AND HEAVY EQUIPMENT 

REFINISHING OPERATONS; 

h. Rule 460 – ADHESIVES AND SEALANTS; 

i. Rule 463 - WOOD PRODUCTS COATING; 

j. Rule 464 – ORGANIC CHEMICALS MANUFACTURING OPERATIONS; 

and 

k. Rule 465 – POLYESTER RESIN OPERATIONS; and. 

 110.2 The provisions of this rule shall not apply to the following: 

a. Cleaning using solvents that contain 50 grams per liter or less VOCs as 

applied including water and exempt compounds;

b. Cleaning of solar cells, laser hardware, scientific instruments, and highprecision optics; 

c. Cleaning of cotton swabs to remove cottonseed oil before cleaning of highprecision optics; 

d. Cleaning of paper-based gaskets and clutch assemblies where rubber is 

bonded to metal by means of an adhesive; 

e. Cleaning of application equipment used to apply coatings on satellites and 

radiation effect coatings; 

f. Cleaning of electrostatic coating application equipment; and 

g. Janitorial cleaning, including graffiti removal. 

110.3 The provisions of this rule, except for the recordkeeping requirements in Section 501, 

shall not apply to the following: 

a. Cleaning of sterilization ink indicating equipment provided that the solvent 

usage is less than 1.5 gallons per day; 

b. Cleaning with aerosol provided that 160 fluid ounces or less of aerosol 

product are used per day, per stationary source. 

110.4 The provisions of Section 302.2 shall not apply to the cleaning of the nozzle tips of 

automated spray equipment systems, except for robotic systems. 
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466-4 May 23, 2002 

200 DEFINITIONS

201 ADHESIVE: Any material that is used to bond one surface to another surface by attachment. 

202 AEROSOL CLEANING SOLVENT: A material used as a surface preparation solvent, a 

cleanup solvent, or as a stripper and consisting of liquid and/or gaseous solvent and 

propellants packaged in a hand-held, pressurized, non-refillable container. The container 

expels pressurized aerosol materials when a valve on the container is depressed. 

203 APPLICATION EQUIPMENT: A device used to apply adhesive, coating, ink, or polyester 

resin materials. 

204 APPURTENANCES: Accessories to a stationary structure, including, but not limited to: hand 

railings, cabinets, bathroom and kitchen fixtures, fences, rain-gutters and down-spouts, 

window screens, lamp-posts, heating and air conditioning equipment, other mechanical 

equipment, large fixed stationary tools and concrete forms. 

205 ARCHITECTURAL COATINGS: Any coating applied to stationary structures and their 

appurtenances, to mobile homes, to pavements, or to curbs. 

206 ARCHITECTURAL COATINGS APPLICATION EQUIPMENT CLEANING: The cleaning of 

architectural coating application equipment such as paint spray guns, brushes, and hoses. 

For purpose of this rule, the cleaning of architectural coating application equipment used for 

coating of prefabricated architectural components are not subject to the requirements of this 

rule. 

207 CLOSED CONTAINER: A container which has a nonabsorbent cover where the cover meets 

with the main body of the container without any visible gaps between the cover and the main 

body of the container. 

208 COATING: A material applied onto or impregnated into a substrate for protective, decorative, 

or functional purposes. Such materials include, but are not limited to, paints, varnishes, 

sealers, and stains. 

209 DEGREASER: A tank, tray, drum, or other container in which the objects to be cleaned are 

exposed to a solvent or solvent vapor in order to remove contaminants. 

210 ELECTRICAL APPARATUS COMPONENTS: An internal component such as wires, 

windings, stators, rotors, magnets, contacts, relays, energizers, and connections in an 

apparatus that generates or transmits electrical energy including, but not limited to: 

alternators, generators, transformers, electric motors, cables, and circuit breakers, except for 

the actual cabinet in which the components are housed. Electrical components of graphic 

arts application equipment and hot-line tools are also included in this category. 

211 ELECTRONIC COMPONENTS: The portion of an assembly, including circuit board 

assemblies, printed wire assemblies, printed circuit boards, soldered joints, ground wires, bus 

bars, and other electrical fixtures, except for the actual cabinets in which the components are 

housed. 

212 ENCLOSED GUN CLEANER:

212.1 A device that is used for the cleaning of spray guns, cups, pots and hoses, that 

has an enclosed solvent container, is not open to the ambient air when in use, 

and has a mechanism to force the cleanup material through the gun while the 

cleaner is in operation; or 

212.2 A device that is used for the cleaning of spray guns, cups, pots and hoses, that has 

an enclosed solvent container, uses non-atomized solvent flow to flush the spray 

equipment and collects and returns the discharged solvent to the enclosed container. 
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May 23, 2002 466-5 

213 EXEMPT COMPOUND: For the purposes of this rule, “exempt compound” has the same 

meaning as in Rule 101—GENERAL PROVISIONS AND DEFINITIONS. 

214 HIGH PRECISION OPTICS: An optical element used in an electro-optical device and is 

designed to sense, detect, or transmit light energy, including specific wavelengths of light 

energy and changes in light energy levels.

215 HOT-LINE TOOL: A specialized tool used primarily on the transmission systems, subtransmission systems and distribution systems for replacing and repairing circuit components 

or for other types of work with electrically energized circuits. 

216 INK: Any fluid or viscous composition used in printing, impressing, or transferring an image 

onto a substrate. 

217 JANITORIAL CLEANING: The cleaning of building or facility components including, but not 

limited to, floors, ceilings, walls, windows, doors, stairs, and bathrooms. 

218 KEY SYSTEM OPERATING PARAMETER:

218.1 A variable that is critical to the operation of an emission control system and that 

ensures: 

a. Operation of the system within the system manufacturer’s specifications, 

and 

b. Compliance with the overall system efficiency standard required by Section 

305. 

218.2 Such variables may include, but are not limited to: 

a. Hours of operation, 

b. Temperature, 

c. Flow rate, and 

d. Pressure. 

219 LEAK: A leak is: 

219.1 The dripping of liquid volatile organic compounds in excess of three drops per 

minute; or 

 219.2 The appearance of a visible mist. 

220 MAINTENANCE CLEANING: A solvent cleaning operation or activity carried out to keep 

tools, machinery, or general work areas clean and in good operational condition. 

221 MANUFACTURING PROCESS: The process of making goods or articles by hand or by 

machinery. 

222 MEDICAL DEVICE: An instrument, apparatus, implement, machine, contrivance, 

implant, in vitro reagent or other similar article, including any component or accessory, 

that meets one of the following conditions: 

222.1 it is intended for use in the diagnosis of disease or other conditions, or in the 

cure, mitigation, treatment, or prevention of disease; or 

222.2 it is intended to affect the structure or any function of the body; or 

222.3 it is defined in the National Formulary or the United States Pharmacopoeia, or any 

supplement to them. 

223 NON-ABSORBENT CONTAINER: A container made of nonporous material, which does not 

allow the migration of the liquid solvent through it. 

224 NON-ATOMIZED SOLVENT FLOW: The use of a solvent in the form of a liquid stream 

without atomization to remove uncured adhesives, uncured inks, uncured coatings, and 

contaminants from an article. 
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466-6 May 23, 2002 

225 NON-COMPLIANT SOLVENT: A solvent that: 

225.1 exceeds the VOC content limits specified in Section 301, and 

225.2 is not exempt pursuant to Section 110, and 

225.3 is used a facility that does not use emission control equipment pursuant to Section 

304, and 

225.4 is used a facility that does not use an alternative compliance option pursuant to Rule 

107, ALTERNATIVE COMPLIANCE. 

226 NON-LEAKING CONTAINER: A container without leak. 

227 PLATELET DEVICES: A very precision photo chemically etched metallic plates that are 

diffusion bonded (high pressure and heat) to make a monolithic part. The details of these 

parts can be a small as .00005 inches. 

228 POLYESTER RESIN: Unsaturated polyester resin such as isophthalic, orthophthalic, 

halogenated, bisphenol-A, vinyl-ester, or furan resin; cross-linking agent; catalyst, gel coat, 

inhibitor, accelerator, promoter, and any other VOC-containing material comprising a resin 

made from polyester. Inert filler and cleaning material are excluded from this definition. 

229 PREFABRICATED ARCHITECTURAL COMPONENTS: Prefabricated metal parts and 

products which are to be used as architectural appurtenances or structures and which are 

coated in a shop environment, not including window frames and door frames. 

230 PRODUCT CLEANING: The cleaning of parts or components in a process of making goods 

or articles by hand or by machinery from those parts or components. 

231 RADIATION-EFFECT COATING: A material that prevents radar detection. 

232 REPAIR CLEANING: A solvent cleaning operation or activity carried out during a repair 

process or as part of a scheduled maintenance procedure during which the parts are 

removed. 

233 REPAIR PROCESS: The process of returning a damaged object or an object not operating 

properly to good condition. 

234 SCIENTIFIC INSTRUMENT: An instrument (including the components, assemblies, and 

subassemblies used in their manufacture) and associated accessories and reagents that is 

used for the detection, measurement, analysis, separation, synthesis, or sequencing of 

various compounds. 

235 SOLVENT: Any liquid containing a volatile organic compound or combination of volatile 

organic compounds, which is used to perform solvent cleaning. 

236 SOLVENT CLEANING: The removal of loosely held uncured adhesives, uncured inks, 

uncured coatings, and contaminants which include, but are not limited to, dirt, soil, and 

grease from parts, products, tools, machinery, equipment, and general work areas. Each 

distinct method of cleaning in a cleaning process, which consists of a series of cleaning 

methods, shall constitute a separate solvent cleaning operation. 

237 SOLVENT FLUSHING: The use of a solvent to remove uncured adhesives, uncured inks, 

uncured coatings, or contaminants from the internal surfaces and passages of the equipment 

by flushing solvent through the equipment. 

238 STERILIZATION INDICATING INK: Ink that changes color to indicate that sterilization has 

occurred. Such ink is used to monitor the sterilization of medical instruments, autoclave 

efficiency, and the thermal processing of foods for prevention of spoilage. 
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May 23, 2002 466-7 

239 STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits or 

may emit any affected pollutant directly or as a fugitive emission. 

239.1 Building, structure, facility, or emissions unit includes all pollutant emitting activities 

which: 

a. Belong to the same industrial grouping, and 

b. Are located on one property, or two or more contiguous properties, and 

c. Are under the same or common ownership, operation, or control, or which 

are owned or operated by entities which are under common control. 

239.2 Pollutant emitting activities shall be considered as part of the same industrial 

grouping if: 

a. They belong to the same two-digit Standard Industrial Classification (SIC) 

code, or 

b. They are part of a common production process, which includes industrial 

processes, manufacturing processes and any connected processes 

involving a common material. 

240 VOLATILE ORGANIC COMPOUND (VOC): For the purpose of this rule, "volatile organic 

compound" has the same meaning as in Rule 101—GENERAL PROVISIONS AND 

DEFINITIONS. 

241 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED: A VOC as applied means the 

VOC content of the cleaning solvent as applied, including any diluters, as calculated pursuant 

to Section 502.1. 

242 WIPE CLEANING: The method of cleaning a surface by physically rubbing it with a material 

such as a rag, paper, sponge or a cotton swab moistened with a solvent. 
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466-8 May 23, 2002 

300 STANDARDS

301 VOC STANDARDS:

301.1 A person shall not perform solvent cleaning unless the solvent has a VOC content, 

as applied (as determined per Section 502.1) equal to or less than the applicable 

VOC limit in the table below. The VOC content shall be calculated based on grams 

per liter of solvent or pounds per gallon of solvent including water and exempt 

compounds. 

VOC 

Content 

g/l (lb/gal) 

Solvent Cleaning Activity 

5/22/03 

General (wipe cleaning, maintenance cleaning) 50 (0.42) 

Product Cleaning During Manufacturing Process or Surface Preparation 

for Coating, Adhesive, Sealants, or Ink Application 

 General 

 Electrical Apparatus Components and Electronic Components 

 Medical Devices and Pharmaceuticals 

 Platelets 

50 (0.42) 

500 (4.2) 

800 (6.7) 

800 (6.7) 

Repair and Maintenance Cleaning 

 General 

 Electrical Apparatus Components and Electronic Components 

 Medical Devices and Pharmaceuticals 

 General Work Surfaces 

 Tools, Equipment, and Machinery 

 Platelets 

50 (0.42) 

900 (7.5) 

600 (5.0) 

800 (6.7) 

800 (6.7) 

Architectural Coating Application Equipment 

 Water based Coatings 

 Solvent based Coatings – Jobsite and no Enclosed Gun Cleaner 

50 (0.42) 

300 (2.5) 

302 CLEANING DEVICES AND METHODS REQUIREMENTS: A person shall not perform 

solvent cleaning unless one of the following cleaning devices or methods is used: 

302.1 Wipe cleaning; 

302.2 Cleaning within closed containers or by using hand held spray bottles from which 

solvents are applied without a propellant-induced force; 

302.3 Using cleaning equipment which has a solvent container that is closed during 

cleaning operations, except when depositing and removing objects to be cleaned, 

and is closed during non-operation with the exception of maintenance and repair to 

the cleaning equipment itself; 

302.4 Using remote reservoir degreaser, non-vapor degreaser, or vapor degreaser used 

pursuant to the provisions of Rule 454, DEGREASING OPERATIONS; or 

302.5 Using solvent flushing methods where the cleaning solvent is discharged into a 

container which is closed except for solvent collection openings and, if necessary, 

openings to avoid excessive pressure buildup inside the container. The discharged 

solvent from the equipment must be collected into containers without atomizing into 

the open air. The solvent may be flushed through the system by air or hydraulic 

pressure, or by pumping. 

302.6 Using an enclosed gun cleaner for cleaning of application equipment, except as 

listed in Section 302.7 or by using a solvent that contains 50 grams per liter or less 

VOCs for cleaning of spray guns if no enclosed gun cleaner is used; 

302.7 Using solvents that comply with the VOC limits in Section 301 and cleaning methods 

in Section 302.5 for cleaning of application equipment used to apply architectural 

coatings at the jobsite; or 
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May 23, 2002 466-9 

302.8 Cleaning of spray gun nozzles by soaking in solvent provided the container (not to 

exceed five (5) gallons in size) is kept tightly covered at all times except when 

accessing the container. 

 303 STORAGE AND DISPOSAL REQUIREMENTS

303.1 All solvents shall be stored in closed containers when not in use. The container shall 

be: 

 a. Nonleaking, and 

 b. Nonabsorbent. 

303.2 All spent solvents shall be disposed of properly. Spent cleanup solvents may be 

classified as hazardous waste. The owner or operator shall obtain approval from 

applicable local, state, or federal water pollution control agency prior to disposing of 

spent solvents into the sewer or storm drain systems. 

304 EMISSIONS CONTROL EQUIPMENT: As an alternative to complying with Sections 301 and 

302, a person may use air pollution control equipment provided it satisfies the following: 

304.1 The air pollution control equipment is approved by the Air Pollution Control Officer 

pursuant to Rule 201, General Permit Requirements, and 

304.2 The air pollution control equipment is designed and operated with: 

a. A control device efficiency of at least 95 percent on a mass basis, as 

determined pursuant to Sections 403 and 502.3, and 

b. An emission collection efficiency of at least 90 percent on a mass basis of 

the emissions generated by the solvent cleaning operations, as determined 

pursuant to Section 502.4, or 

c. An output of less than 50 parts per million calculated as carbon with no 

dilution. 

400 ADMINISTRATIVE REQUIREMENTS 

401 COMPLIANCE SCHEDULE: Any person subject to this rule shall be in compliance with the 

requirements of this rule no later than May 22, 2002. 

402 CALCULATION FOR DETERMINING VOC CONTENT OF CLEANING SOLVENTS 

INCLUDING WATER AND EXEMPT COMPOUNDS: For the VOC content as applied, the 

volume of solvent is defined as the volume of the original solvent, plus any material added to 

the original solvent (e.g., thinners or reducers). For the VOC content as supplied, the volume 

of solvent is defined as the volume of the original solvent. The weight of VOC per total 

volume of solvent shall be calculated by the following equation: 

m

v w ec

V

W W W G − − 2 =

Where: G2 = Weight of VOC per total volume of solvent, in grams per 

liter 

Wv = Weight of all volatile compounds, in grams 

Ww = Weight of water, in grams 

Wec = Weight of m compounds, in grams 

Vm = Volume of solvent, in liters 

403 CALCULATION FOR DETERMINING PERCENT CONTROL EFFICIENCY AND 

VOC MASS EMISSION RATE: The VOC mass emission rate shall be calculated 

both upstream and downstream of the emissions control device based on the VOC 

mass concentration, collection efficiency, and volumetric flowrate, pursuant to 

Section 502.3, 502.4, and 502.5 and the following equations: 

404.1 VOC Mass Emission Rate: 

( ) * ( ) * (60 ) (calculated upstream and downstream) hr

m M = Q C
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

466-10 May 23, 2002 

Where: M = VOC mass emission rate (upstream/downstream), in lb/hr. 

Q = the volumetric flowrate at the inlet (upstream) or exhaust 

stack outlet (downstream), in standard cubic feet per 

minute as determined by Sections 502.3 and 502.5. 

C = the VOC mass concentration at the inlet (upstream) or 

outlet (downstream), in pounds per standard cubic feet, as 

determined pursuant to Section 502.3. 

404.2 The percent control efficiency is calculated as follows:

% *100 ⎟

⎟

⎠

⎞

⎜

⎜

⎝

⎛ − =

u

u d

M

M M CE

Where: CE = control efficiency. 

Mu = the upstream VOC mass emission rate, in lb/hr. 

Md = the downstream VOC mass emission rate, in lb/hr. 

404 OPERATION AND MAINTENANCE PLAN: Any person using an approved emission control 

device pursuant to Section 305 must submit an Operation and Maintenance Plan for the 

emissions control to the Air Pollution Control Officer for approval. This Plan shall specify 

operation and maintenance procedures that demonstrate continuous operation and 

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

operations. This Plan shall specify key system operating parameters, such as temperatures, 

pressures, and/or flow rates, necessary to determine compliance with this rule and shall 

describe in detail procedures to maintain the approved control device. The plan shall specify 

which records must be kept to document these operations and maintenance procedures. The 

records shall comply with the requirements of Section 501. This Plan shall be implemented 

upon approval by the Air Pollution Control Officer. 

405 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS: Any person who sells any 

solvent subject to this rule shall make available to the purchaser at the time of sale the 

following information: 

405.1 The solvent type by name/code/manufacturer; 

405.2 The maximum VOC content of the cleanup solvent as applied. The VOC content 

shall be displayed as grams of VOC per liter of solvent (or pounds of VOC per 

gallon), including water and exempt compounds as determined pursuant to Section 

502.1. 

405.3 Recommendations regarding thinning, reducing, or mixing with any solvent, if 

applicable. 

500 MONITORING AND RECORDS 

501 RECORDKEEPING:

501.1 List of Solvents: A list shall be maintained of all solvents currently used and/or 

stored at the site. The list shall include the following information: 

a. Cleaning solvent type by name/code/manufacturer. 

b. The actual VOC content of cleaning solvents listed in Section 301, as 

applied including water and exempt compounds. 

c. The actual mixing ratio for the cleaning solvent as applied. 

501.2 Product Information: The information listed under Section 405 shall be maintained 

on-site and made available to the Air Pollution Control Officer upon request. 

501.3 Usage Records: Any person within the District using cleaning solvents regulated by 

this rule shall update and maintain the records as required by this rule as follows: 

a. Daily:

1. Records of total applied volume in gallons per day of solvents used 

for cleaning of sterilization ink indicating equipment. 

2. Records of total volume of aerosol products in ounces used. 
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May 23, 2002 466-11 

b. Monthly: 

1. Record of total applied volume in gallons for each cleaning solvent 

used, and 

2. Record of solvent cleaning activity associated with each solvent 

used. 

501.4 Emission Control Equipment: Any person using an emission control device 

pursuant to this rule shall maintain records, on a daily basis, of key system operating 

parameters for emission control equipment, including, but not limited to: 

a. Hours of operation; 

b. Routine and non-routine maintenance; and 

c. The records required by Section 404 as part of the Operation and 

Maintenance Plan. 

d. Records of test reports conducted pursuant to Section 502. 

501.5 Duration of Records: Such records shall be maintained on-site for a continuous 

three-year period and made available for review by the Air Pollution Control Officer 

upon request. 

502 TEST METHODS:

502.1 DETERMINATION OF VOC CONTENT: The VOC content of the cleaning solvent 

shall be determined in accordance with United States Environmental Protection 

Agency. Method 24 and Section 402 of this rule. 

502.2 DETERMINATION OF COMPOUNDS EXEMPT FROM VOC DEFINITION: Exempt 

compounds referenced in Section 212 and listed in Rule 101 – General Provisions 

and definitions, shall be determined in accordance with ASTM D 4457-91 or 

California Air Resources Board Method 432. If any of the perfluorocarbons or volatile 

cyclic and linear methyl siloxanes are being claimed as exempt compounds, the 

person making the claim must state in advance which compounds are present, and 

the United States Environmental Protection Agency -approved test method used to 

make the determination of these compounds. 

502.3 DETERMINATION OF CONTROL EFFICIENCY: Control efficiency of the emissions 

control equipment shall be determined in accordance with United States 

Environmental Protection Agency Method 18, 25, or 25A (whichever is applicable). 

502.4 DETERMINATION OF COLLECTION EFFICIENCY: Efficiency of the collection 

system shall be determined in accordance with the United States Environmental 

Protection Agency's Guidelines for Determining Capture Efficiency, January 9, 1995. 

Individual capture efficiency test runs subject to United States Environmental 

Protection Agency technical guidelines shall be determined by: 

a. Applicable United States Environmental Protection Agency Methods 204, 

204A, 204B, 204C, 204D, 204E, and/or 204F; or 

b. Any other method approved by United States Environmental Protection 

Agency, the California Air Resources Board, and the Air Pollution Control 

Officer. 

502.5 DETERMINATION OF VOLUMETRIC FLOWRATE: Volumetric flowrate shall be 

determined in accordance with United States Environmental Protection Agency 

Methods 2, 2A, 2C, or 2D (whichever is applicable). 
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