SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

September 25, 2008October 28, 2010 466-1 

RULE 466 - SOLVENT CLEANING 

Adopted 5-23-02 

(Amended 9-25-08, 10-28-10) 

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 CURED INK, CURED COATING, OR CURED ADHESIVE 

210 DEGREASER 

211 ELECTRICAL APPARATUS COMPONENTS 

212 ELECTRONIC COMPONENTS 

213 ENCLOSED GUN CLEANER 

214 EXEMPT COMPOUND 

215 FOOD PRODUCT MANUFACTURING AND PROCESSING OPERATION 

216 GENERAL WORK SURFACE 

217 HIGH PRECISION OPTICS 

218 HOT-LINE TOOL 

219 INK 

220 JANITORIAL CLEANING 

221 JOBSITE 

222 KEY SYSTEM OPERATING PARAMETERS 

223 LEAK 

224 LOW-MOISTURE FOOD

2245 MAINTENANCE CLEANING 

2256 MANUFACTURING PROCESS 

2267 MEDICAL DEVICE 

2278 NON-ABSORBENT CONTAINER 

2289 NON-ATOMIZED SOLVENT FLOW 

22930 NON-COMPLIANT SOLVENT 

2301 NON-LEAKING CONTAINER 

2312 PHARMACEUTICAL PRODUCT 

2323 PLATELET DEVICES 

2334 POLYESTER RESIN 

2345 PREFABRICATED ARCHITECTURAL COMPONENTS 

2356 PRODUCT CLEANING 

2367 RADIATION EFFECT COATING 

2378 REPAIR CLEANING 

2389 REPAIR PROCESS 

23940 SCIENTIFIC INSTRUMENT 

2401 SOLVENT 

2412 SOLVENT-BASED COATING 

2423 SOLVENT CLEANING 

2434 SOLVENT FLUSHING 
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466-2 October 28, 2010September 25, 2008

2445 STERILIZATION 

2456 STERILIZATION INDICATING INK 

2467 STATIONARY SOURCE 

2478 STRIPPING 

2489 VOLATILE ORGANIC COMPOUND (VOC) 

24950 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED 

251 WATER ACTIVITY

2502 WATER-BASED COATING 

2513 WIPE CLEANING 

300 STANDARDS

301 VOC STANDARDS 

302 CLEANING DEVICES AND METHODS REQUIREMENTS 

303 STORAGE AND DISPOSAL REQUIREMENTS 

304 EMISSIONS CONTROL EQUIPMENT 

400 ADMINISTRATIVE REQUIREMENTS

401 CALCULATION FOR DETERMINING VOC CONTENT OF CLEANING SOLVENT 

INCLUDING WATER AND EXEMPT COMPOUNDS 

402 CALCULATION FOR DETERMINING PERCENT CONTROL EFFICIENCY AND VOC 

MASS EMISSION RATE 

403 OPERATION AND MAINTENANCE PLAN 

404 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS 

500 MONITORING AND RECORDS 

501 RECORDKEEPING 

502 TEST METHODS 
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September 25, 2008October 28, 2010 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, and to all persons who use VOC-containing materials for the 

sterilization of food manufacturing and processing equipment. 

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. Prior to September 25, 2009, cleaning using solvents that contain 50 grams 

per liter or less VOCs as applied including water and exempt compounds. 

This exemption expires on September 25, 2009; 

b. Effective September 25, 2009, cleaning using solvents that contain 25 

grams per liter or less VOCs as applied including water and exempt 

compounds;

c. Cleaning of solar cells, laser hardware, scientific instruments, high-voltage 

microwave vacuum tubes, and high-precision optics; 

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

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

bonded to metal by means of an adhesive; 

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

radiation effect coatings; 

g. Prior to September 25, 2009, cleaning of electrostatic coating application 

equipment. This exemption expires on September 25, 2009; and 

h. 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; 
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466-4 October 28, 2010September 25, 2008

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

product are used per day, per stationary source. 

c. Sanitizing products which are labeled and applied to food-contact surfaces 

that are used to process dry and low-moisture food products and are not 

rinsed prior to contact with food.

110.4 The provisions of Section 302 shall not apply to the cleaning of the nozzle tips of 

automated spray equipment systems, except for robotic systems. 

110.5 The provisions of Section 301.1 shall not apply to materials used for the stripping of 

cured inks, cured coatings, or cured adhesives. 

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 CURED INK, CURED COATING, OR CURED ADHESIVE: An ink, coating, or adhesive, 

which is dry to the touch. 

210 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. 

211 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. 
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September 25, 2008October 28, 2010 466-5 

212 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. 

213 ENCLOSED GUN CLEANER:

213.1 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 

213.2 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. 

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

meaning as in Rule 101—GENERAL PROVISIONS AND DEFINITIONS. 

215 FOOD PRODUCT MANUFACTURING AND PROCESSING OPERATION: Any activity or 

equipment used in the production, formulation, or configuration of any food product. Such 

manufacturing and processing operations include, but are not limited to distillation, extraction, 

reacting, blending, drying, crystallizing, granulating, separation, sterilization, and filtering. 

216 GENERAL WORK SURFACE: An area of a medical device or pharmaceutical facility where 

solvent cleaning is performed on work surfaces including, but not limited to, tables, 

countertops, and laboratory benches. General work surface shall not include items defined 

under janitorial cleaning.

217 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.

218 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. 

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

onto a substrate. 

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

limited to, floors, ceilings, walls, windows, doors, stairs, bathrooms, furnishings, and exterior 

surfaces of office equipment, and excludes the cleaning of work areas where manufacturing 

or repair activity is performed. 

221 JOBSITE: The location where architectural coatings are applied to stationary structures or 

their accessories at the site of installation. Jobsite does not include the application of 

coatings in or on the premises of a factory or a shop as part of a manufacturing, production, 

or repairing process. 

222 KEY SYSTEM OPERATING PARAMETER:

222.1 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. 

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

a. Hours of operation, 

b. Temperature, 
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466-6 October 28, 2010September 25, 2008

c. Flow rate, and 

d. Pressure. 

223 LEAK: A leak is: 

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

minute; or 

 223.2 The appearance of a visible mist. 

224 LOW-MOISTURE FOOD: A food with a water activity less than 0.85 or other applicable 

standards approved by the Air Pollution Control Officer, California Air Resources Board, and 

U.S. Environmental Protection Agency.

2245 MAINTENANCE CLEANING: A solvent cleaning operation or activity carried out to keep 

tools, machinery, molds, forms, jigs, or general work areas where manufacturing or repair 

activity is performed clean and in good operational condition. This definition does not include 

the cleaning of application equipment for coatings, adhesives, or inks. 

2256 MANUFACTURING PROCESS: The process of making goods or articles by hand or by 

machinery. 

2267 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: 

2267.1 it is intended for use in the diagnosis of disease or other conditions, or in the cure, 

mitigation, treatment, or prevention of disease; or 

2267.2 it is intended to affect the structure or any function of the body; or 

2267.3 it is defined in the National Formulary or the United States Pharmacopoeia, or any 

supplement to them. 

2278 NON-ABSORBENT CONTAINER: A container made of nonporous material, which does not 

allow the migration of the liquid solvent through it. 

2289 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.

22930 NON-COMPLIANT SOLVENT: A solvent that: 

22930.1 exceeds the VOC content limits specified in Section 301, and 

22930.2 is not exempt pursuant to Section 110, and 

22930.3 is used a facility that does not use emission control equipment pursuant to Section 

304, and 

22930.4 is used a facility that does not use an alternative compliance option pursuant to Rule 

107, ALTERNATIVE COMPLIANCE. 

2301 NON-LEAKING CONTAINER: A container without leak. 

2312 PHARMACEUTICAL PRODUCT: A preparation or compound of medicinal drugs including, 

but not limited to, a prescription drug, analgesic, decongestant, antihistamine, cough 

suppressant, vitamin, mineral and herb, and is used by humans for consumption to enhance 

personal health. 

2323 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. 

2334 POLYESTER RESIN: Unsaturated polyester resin such as isophthalic, orthophthalic, 

halogenated, bisphenol-A, vinyl-ester, or furan resin; cross-linking agent; catalyst, gel coat, 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

September 25, 2008October 28, 2010 466-7 

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. 

2345 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. 

2356 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. 

2367 RADIATION-EFFECT COATING: A material that prevents radar detection. 

2378 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. 

2389 REPAIR PROCESS: The process of returning a damaged object or an object not operating 

properly to good condition. 

23940 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. 

2401 SOLVENT: Any liquid containing a volatile organic compound or combination of volatile 

organic compounds, which is used to perform solvent cleaning. 

2412 SOLVENT BASED COATING: A coating designed to be dissolved or suspended in a VOC 

containing liquid.

2423 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. Effective September 25, 

2009, solvent cleaning operations include sterilization of food manufacturing and processing 

equipment. 

2434 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. 

2445 STERILIZATION: A process or operation that removes or prevents the growth of bacteria 

and other living microorganisms. 

2456 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. 

2467 STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits or 

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

2467.1 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. 
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466-8 October 28, 2010September 25, 2008

2467.2 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. 

2478 STRIPPING: The removal of cured inks, cured coatings, or cured adhesives. 

2489 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. 

24950 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. 

251 WATER ACTIVITY: a measure of the free moisture in a food and is the quotient of the water 

vapor pressure of the substance divided by the vapor pressure of pure water at the same 

temperature.

2502 WATER BASED COATING: A coating designed to be dissolved or suspended in water. 

2513 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. 

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 pursuant to 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 Prior to 

9/25/2009 

Effective 

9/25/2009 

General (wipe cleaning, maintenance cleaning) 50 (0.42) 25 (0.21) 

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) 

25 (0.21) 

100 (0.83) 

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) 

25 (0.21) 

100 (0.83) 

600 (5.0) 

800 (6.7) 

800 (6.7) 

Architectural Coating Application Equipment 

 Water based Coatings 

Enclosed Gun Cleaner No limit 25 (0.21) 
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September 25, 2008October 28, 2010 466-9 

No Enclosed Gun Cleaner 

 Solvent based Coatings 

Enclosed Gun Cleaner 

No Enclosed Gun Cleaner, cleaning at jobsite 

No Enclosed Gun Cleaner, cleaning not at jobsite 

50 (0.42) 

No limit 

300 (2.5) 

50 (0.42) 

25 (0.21) 

25 (0.21) 

25 (0.21) 

25 (0.21) 

Sterilization of food manufacturing and processing equipment No limit 200 (1.68) 

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 a 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 Prior to September 25, 2009, 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 Section 301, a 

person may use air pollution control equipment provided it satisfies all of the following: 

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

pursuant to Rule 201, General Permit Requirements, 

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 402 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. 
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466-10 October 28, 2010September 25, 2008

304.3 Effective September 25, 2009, the air pollution control equipment shall result in VOC 

emissions per calendar quarter no greater than would have resulted from compliance 

with Section 301, as calculated by the following equation: 

∑ () () ∑ = =

≤ ⎥

⎦

⎤ ⎢

⎣

⎡ ⎟

⎠

⎞ ⎜

⎝

⎛

⎟

⎠

⎞ ⎜

⎝

⎛ −

n

i

i i

n

i

ACTi Ui LIM U CE CL

100 100 1 1

1

Where: CE = Control device efficiency, % by mass 

CL = Collection efficiency, % by mass 

ACTi

 = Actual VOC content of material “i,” grams per liter 

LIMi

 = Applicable VOC limit for material “i” in Section 301, grams 

per liter 

Ui = Usage of material “i,” liters per calendar quarter 

400 ADMINISTRATIVE REQUIREMENTS 

401 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 

402 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: 

402.1 VOC Mass Emission Rate: 

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

m M = Q C

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. 
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September 25, 2008October 28, 2010 466-11 

402.2 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. 

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

device pursuant to Section 304 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. 

404 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: 

404.1 The solvent type by name/code/manufacturer; 

404.2 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. 

404.3 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 404 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. 

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. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

466-12 October 28, 2010September 25, 2008

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 403 as part of the Operation and 

Maintenance Plan. 

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

501.5 Duration of Records: 

a. Prior to September 25, 2010, 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. 

b. Effective September 25, 2010, such records shall be maintained on-site for 

a continuous five-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 401 of this rule. 

502.2 DETERMINATION OF COMPOUNDS EXEMPT FROM VOC DEFINITION: Exempt 

compounds referenced in Section 214 and listed in Rule 101 – General Provisions 

and definitions, shall be determined in accordance with ASTM D 4457-02 (2008) 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: Collection efficiency shall be 

determined in accordance with the U.S. EPA technical guideline document, 

“Guidelines for Determining Capture Efficiency,” dated January 9, 1995. Individual 

capture efficiency test runs subject to U.S. EPA technical guidelines shall be 

determined by: 

a. Applicable U.S. EPA Methods 204, 204A, 204B, 204C, 204D, 204E, and/or 

204F; or 

b. Any other method approved by U.S. EPA, 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). 

502.6 DETERMINATION OF WATER ACTIVITY IN FOODS: Water activity in foods shall 

be determined in accordance with United States Food and Drug Administration 

Inspection Technical Guide number 39, Water Activity (aw) in Foods.

502.67 MULTIPLE TEST METHODS: When more than one test method or set of test 

methods is specified for any testing, a violation of any requirement of this rule 

established by any one of the specified test methods or set of test methods shall 

constitute a violation of this rule.