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 CLEANINGSACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 METHODSSACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 st orage and disposal of new and spent cleaning
solvents.

102 APPLICABILITY: Except as provided in Section 110, th is rule applies to all persons who use VOC-containing materials in solvent cleani ng operations during the production, repair, maintenance or servicing of parts, products, t ools, machinery, or equipment, or in general work areas, and to all persons who store and di spose 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 us ed 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.SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

466-4 May 23, 2002 200 DEFINITIONS

201 ADHESIVE: Any material that is used to bond one surf ace 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 consis ting 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 struct ure, including, but not limited to: hand railings, cabinets, bathroom and kitchen fixtur es, 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 su ch as paint spray guns, brushes, and hoses. For purpose of this rule, the cleaning of arch itectural 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, contac ts, relays, energizers, and connections in an apparatus that generates or transmits electr ical energy including, but not limited to: alternators, generators, transforme rs, 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-atom ized solvent flow to flush the spray equipment and collects and returns the discharged solvent to the enclosed container.SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 ener gy, 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 ar eas 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.SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 al ternative compliance opt ion 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 re sin; 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 com ponents in a proce ss 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 proce ss, 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.SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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.SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 – J obsite 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 so lvent container that is closed during cleaning operations, except when depositi ng 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 cleani ng 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; orSACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 cont ainers 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 solv ent 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 ec w v 

### V W W W G − −

= 2

Where: G 2 = Weight of VOC per total volume of solvent, in grams per
liter
W
v = Weight of all volatile compounds, in grams

W
w = Weight of water, in grams

W ec = Weight of m compounds, in grams

V
m = 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 ( * ) ( * ) ( downstream and upstream calculated hr m C Q M =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 d u 

### M M M CE

Where: CE = control efficiency.

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

M d = 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 equipm ent 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 t hese operations and maint enance 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 Se ction 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.SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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 record s, 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 re view 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 Protec tion 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 Environm ental 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).SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS

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