Feather River AQMD 3.14

- 1

Rule 3.14 SURFACE PREPARATION AND CLEAN

- UP

( Adopted 6/1991; Amended 8/1 /2011 )

A. GENERAL

A.1 PURPOSE: The purpose of this Rule is to limit the emissions of volatile organ ic compounds (VOC) from surface preparation and clean

- up, and from the storage and disposal of materials used for surface preparation and clean

- up

.

A.2 APPLICABILITY: The provisions of this Rule apply to any owner or operator of any facility that uses VOC containing materials for surface preparation and clean

- up , or any person who sells or distributes any solvent subject to the provisions of this rule

.

A.3 EXEMPTION

- GENERAL: The provisions of this rule, except

for Section E. 3, Burden of Proof, shall not apply to the following:

a. Cleaning operations using a solvent containing no more than 50 gra ms of VOC per liter of material;

b. Cleaning with aerosol products provided that the facility uses less than 160 fluid ounces of aerosol products per day. The use of such products shall comply with CARB regulations.

c. Dry cleaning operations;

d. Janitorial cleaning;

e. Stripping of cured coatings, cured adhesives, and cured
inks ;

f. Degreasers with an open top surface area of 1.0 square foot or less o r with a capacity of 2 .0 gallons or less, using unheated non

- halogenated solvent exclusively, and
the reservoir is c overed when not processing work ;

g. Any solvent degreasing operations that are subject to

the N ational E mission S tandards for H azardous A ir

P ollutants (NESHAP) requirements of 40 CFR Part 63 Subpart T

- National Emission St andards f or Halogenated Solvent Cleaning;Feather River AQMD 3.14

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h. Cleaning operations in printing pre

- press or graphic arts pre

- press areas, including the cleaning of film processors, color scanners, plate processors, film cleaning, and plate clean ing.

i. 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.

A.4 EXEMPTION

- SOLVENT REQUIREMENTS: The solvent VOC limits of
Section C. 1 shall not apply to any of the following applications:

a. Facilities with a solvent usage of 20 gallons or less per calendar year . Solvents with a VOC content of 50 grams per liter or less do not count towards the 20 gallon per year aggregate limit;

b. Wipe cleaning of solar cells, laser hardware, high precision op tics, or polycarbonate plastics;

c. Wipe cleaning for performance laboratory tests on coatings, adhesives or inks, research an d development programs, and labo ratory tests in quality assurance laboratories;

d. Cleaning of cotton swabs to remove cottonseed oil before

cl eaning of high precision optics;

e. Cleaning of paper

- based gaskets, and clutch assemblies where rubber is bonded to metal by means of an adhesi ve;

f. Cleaning of sterilization ink indicating equipment provided that the solvent usage i s less than 1.5 gallons per day;

g. Coating and adhesive application processes utilized to manufacture transdermal drug delivery product s using ethyl acetate;

h. Cleaning applications using bug and tar removal, provided that the bug and tar rem over is regulated under the Consumer Products Regulation (California Code of Regulations Section 94507 et seq.).Feather River AQMD 3.14

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B. DEFINITIONS

B.1 AEROSOL PRODUCT: A hand

- held, non

- refillable container which expels pressurized product ingredients by means of a propellant

- ind uced force.

B.2 AEROSPACE COMPONENT: Any raw material, partial or completed fabricated part, assembly of parts, or completed unit of any aircraft, helicopter, missile, or space vehicle, including mockups and prototypes.

B.3 AIR

- SOLVENT INTERFACE: The point of contact between the exposed solvent and air.

B.4 APPLICATION EQUIPMENT: A device used to apply adhesive, coating, ink, or polyester resin material, such as but not limited to brushes, rollers
, and spray guns.

B.5 BATCH LOADED COLD CLEANER : Any batch loaded, non

- boiling solvent degreaser with an air

- solvent interface.

B.6 CONTROL DEVICE: Equipment
, such as an incinerator or

adsorber
, used to reduce or prevent air pollutants from reaching the ambient air.

B.7 CURED COATINGS, CURED INKS, AND CURED ADHESIVES : Coatings,

ink s, and adhesives which are dry to the touch.

B.8 DEGREASER : A tank, tray, drum or other container in which objects to be cleaned are exposed to a solvent or solvent vapor in order to remove contaminants. The objects to be cleaned include, but are not limited to, parts, products, tools, machinery, and equipment. An enclosed spray application equipment cleaning system is not a degreaser.

B.9 ELECTRICAL APPARATUS COMPONENT: An internal component such as wires, windings, stators, rotors, magnets, contacts, relays, en ergizers, and connections in an apparatus that generates or transmits ele ctrical energy including, but n o t limited to: alternators, generators, transformers, electric motors, cables, and circuit breakers, except for the actual cabinet in which the componen ts are housed. Electrical components of graphic arts application equipment and hot

line tools are also included in this category.

B.10 ELECTRONIC COMPONENT: The portion of an assembly, including circuit card assemblies, printed wire assemblies, printedFeather River AQMD 3.14

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circuit boards, soldered joints, ground wires, bus bars, and other electrical fixtures, except for the actual cabinet in which the components are housed.

B.11 E NCLOSED GUN CLEANER :

a. A device that fully enclose s the spray guns, cups, nozzles, bowls, and other associated parts during washing, rinsing
, and draining procedure s; or

b. A device that is used for the cleaning of spray guns, cups, nozzles
, bowls, and associated equipment that has
an enclosed solvent contai ner, uses non

- atomized solvent flow to flush the spray equipment, and collects and returns the discharged solvent to the enclosed solvent
container.

B.12 EXEMPT COMPOUNDS: As defined in District Rule 1.1.

B.13 FLEXOGRAPHIC PRINTING : A letterpress method utilizing flexible rubber or other elastomeric plate s and rapid drying liquid inks.

B.14 FREEBOARD HEIGHT: The distance from the top of the solvent or solvent drain to the top of the tank for batch loaded

cold cleaners.

B.15 FREEBOARD RATIO: The freeboard height divided by the width of the degreaser.

B.16 GRAVURE PRINTING: An intaglio printing process in which the ink is carried in minute etched or engraved wells on a roll or cylinder.

B.17 HIGH PRECISION OPTICS: An optical element used in an

electro

- optical device that is designed to sense, detect, or transmit light energy, including specific wavelengths of light energy and changes in light energy levels.

B.18 INTAGLIO PRINTING: A printing operation done from a plate in which the image is etched or engraved into the surface.

B.19 JANITORIA L CLEANING: The cleaning of building or facility components, such as the floor, ceiling, walls, windows, doors, stairs, bathrooms, furnishings, and exterior surfaces of office equipment. The cleaning of work areas where manufacturing or repair activity is performed is
excluded from this definition.Feather River AQMD 3.14

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B.20 LETTERPRESS PRINTING: The method in which the image area is

raised relative to the non

- image area and the ink is transferred to the paper directly from the image surface.

B.21 LIQUID LEAK: A visible liquid solvent l eak from a container at a rate of more than three (3) drops per m inute, or a visible liquid mist.

B.22 LITHOGRAPHIC PRINTING: A plane

- o

- graphic method in which the image and non

- image areas are on the same plane.

B.23 L OW EMISSION SPRAY GUN CLEANER : Any properly used spray equipment clean

- up device which has passive solvent losses of no more than 0.6 grams per hour and has active solvent losses of no more than 15 grams per operating cycle as defined by the test method in S ection F.7

.

B.24 LOW

- MOISTURE FO OD: A food with a water activity less than 0.85 or other applicable standards approved by the Air Pollution Control Officer, Cal ifornia Air Resources Board,

or U.S. Environmental Protection Agency.

B.25 MAINTENANCE CLEANING : Surface preparation and clean

- up , i ncluding sanitization, carried out to keep parts, products, tools, machinery, equipment, or general work areas in clean and good operational condition.

B.26 MANUFACTURING PROCESS: The process of making goods or articles by hand or by machinery.

B.27 MEDICAL DEVICE: Any 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:

a. It is intended for use in the diagnosis of dise ase or other conditions, or in the cure, mitigation, treatment, or prevention of disease ; or

b. It is intended to affect the structure or any function of the body; or

c. It is defined in the National Formulary or the United States Pharmacopia, or any supplemen t to them.Feather River AQMD 3.14

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B.28 NON

- ABSORBENT CONTAINERS: Containers made of nonporous

materials which do not allow the migration of the liquid solvent through them.

B.29 NON

- ATOMIZED SOLVENT FLOW: The use of a solvent to remove uncured adhesives, uncured inks, uncured coatings, and contaminants from an article in the form of a liquid stream
without atomization

.

B.30 PHARMACEUTICAL: Any facility producing or blending chemicals for use in pharmaceutical products and or employing chemical processes in the manufacture of pharmaceutical products or medical devices.

B.31 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 huma ns for consumption to enhance human health.

B.32 PRE

- PRESS OPERATIONS: Operations associated with printing plate making using film photo processors and plate photo

processors.

B.33 PRINTING: Any operation in the graphic arts that imparts color, design, alphabet, or numerals on a substrate.

B.34 PRODUCT CLEANING: The removal of loosely held uncured adhesives, uncured inks, uncured coatings, and contaminants

such as dust, soil, oil, grease, etc., from the product or substrate during any manufacturing process, repair pro cess, maintenance cleaning, adhesive application, coating application or ink application.

B.35 R EACTIVE O RGANIC G ASES (ROG): As defined in District Rule

1.1.

B.36 REMOTE RESERVOIR COLD CLEANER: A cleaning device in which liquid solvent is pumped from a solvent container to a
sink

- like work area and the solvent from the sink

- like area drains into an enclosed solvent container while parts are being cleaned.

B.37 REPAIR PROCESS: The process of returning a damaged object

or an object not operating properly to good condi tion.Feather River AQMD 3.14

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B.38 SCREEN PRINTING: A process in which the printing ink passes through a web or fabric to which a refined form of stencil

has been applied. The stencil openings determine the form and dimensions of the imprint.

B.39 SOLVENT: Any liquid containing a volatil e organic compound or combination of volatile organic compounds, which is used to perform surface preparation and clean

- up

.

B.40 SOLVENT FLUSHING: The use of 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.

B.41 STERILIZATION : A process or operation that removes or prevents the growth of bacteria and other living microorganisms.

B.42 STRIPPING : The removal of cured inks, cured adhesives, and cured coatings.

B.43 SURFACE PREPARATION AND CLEAN

- UP : The removal of loosely held uncured adhesives, uncured inks, uncured coatings, and
contaminants such as dust, soil, oil, grease, etc., at any step in the production, repair, maintenance, or servicing of parts, products, tools, machinery, equipment, or general

work areas and includi ng the storage and disposal of VOC containing materials and the sterilization of food manufacturing and processing equipment.

B.44 ULTRAVIOLET INKS: Ink s which dry by a polymerization reaction induced by ultraviolet radiation.

B.45 VOLATILE ORGANIC COMPOUND (VOC): Shall have the same meaning as Reactive Organic Gases (ROG).

B.46 WATER ACTIVITY: A measure of the free moisture in a food and is the quotient of the wa ter vapor pressure of the substance divided by the vapor pressure of pure water at the same temperature.

B.47 WIPE CLEANING: The method of cleaning a surface by physically rubbing it with a material such as a rag, paper, or a cotton swab moistened with a solve nt.Feather River AQMD 3.14

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C. STANDARDS

C.1 SOLVENT VOC LIMITS: A pe rson shall not use a solvent to perform surface prepara tion and clean

- up , or specify or require any person to use a solvent subject to the provisions of this Rule, u nless the solvent complies with the applicable requirements set forth in Table 1.

TABLE 1: VOC CONTENT LIMITS

Category VOC Content Limit (grams/Liter)

Prior to

1 2 / 3 1 /2011 Effective

12 / 3 1 /201 1

Product Cleaning Coatings and Adhesives 50

Vehicle s & Mobile Eqmt. [Rule 3.19] Surface Prep 200 50 Handheld Spray 780 50 Wood Products [Rule 3.20] 200 50

Metal Parts and Products 50 Polyester Resins 50

Inks 50 Electrical Apparatus Components & Electronic Components 100

Aerospace Components 900 Medical Devices, Pharmaceuticals, and
Pharmaceutical Products 800

Cleaning of Application Equipment Coating s and Adhesives 50

Vehicles & Mobile Eqmt. [Rule 3.19] 50 Wood Products [Rule 3.20] 50

Metal Parts and Products 50 Polyester Resins 50 Printing Operations : Screen , Lithographic
, and Letterpress
, Ultraviolet
, Flexographic
, Gravure (Publication ) 100

Aerospace Components 50 Medical Devices, Pharmaceuticals, and
Pharmaceutical Products 80 0

Sterilization of food manufacturing and processing equipment 200

General: Industries Not Specified Above 50

C.2 CLEANING DEVICES AND METHODS REQUIREMENTS: A person shall not perform surface preparation and clean

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

a. Wipe cleaning;

b. Hand

- held s pray bott les from which solvents a re applied without a propellant

- induced force;

c. Cleaning equipment which contains solvent and is closed during cleaning ope rations, except when depositing andFeather River AQMD 3.14

- 9 removin g objects to be cleaned, and is closed during

non

- operation with the exception of mainten ance and repair to the cleaning equipment itself;

d. Remote reservoir cold cleaner s used pursuant to Section

C. 5;

e. Non

- atomize d solvent flow method where the cleaning

solv ent is collected in a container or a collectio n system which is closed except for solv ent collection openings and, if necessa ry, openings to avoid excessive

pressure build

- up inside the container;

f. Solvent flu shing method where the cleaning solvent is
di scharged into a container which is close d except for
solvent collection openings and, if necessary, openings
to avoid excessive pressure build

- up inside the container. The discharged solvent from the equipment

mu st be collected into containers without a tomizing into the open air. The solvent may b e flushed through the system by air or hy draulic pressure, or by pumping;

g. Cleaning device or mechanism which has been determined by the APCO to result in equivalent or lower emissions

than the appl icable limits listed in Table 1.

C.3 CLEANING DEVICES

- GENER AL REQUIREMENTS: Any perso n using equipment subject to th e requirements of C. 2. c , C. 2. d
, C. 2. e , or C. 2. f shall comply with all of the following requirements:

a. Do not clean porous or absorbent materials, such as

c loth, leather, rope, or wood;

b. Use only solven t containers free of all liquid leaks;

c. Auxi liary equipment, such as pumps, pipelines , or flanges
, shall not have any liquid leaks , vi sible tears,
or cracks;

d. Any liquid leak, visible tear, or crack detected shall be repai red within 24 hours , or the leaking section of

the cleaner shall be drained of all solvent and shut
down until it is replaced or repaired;

e. Any liquid leak detecte d by the district shall
constitute a violation of this section. This provisionFeather River AQMD 3.14

- 10 shall not apply i f the equipment is tagge d out and if the leak is already noted in the facility’s logbook.

C.4 CLEANING DEVICES

– BATCH LOADED COLD CLEANERS : Any person using a batch loaded cold cleaner shall comply with al l of the following requirements :

a. A cover must be used which prevents the so lvent from evaporating when w ork is not being performed. The cover

should be de signed so that it can be opened and closed easily with one hand;

b. If the solven t initial boiling point is less than 248 ° F (120°C) and the solvent is heated above 122°F ( 50 °C )
, the n the cold cleaner shall have one of the following:

1. A free board ratio greater or equal to 0.75; or

2. A water cover if the solvent is insoluble in and heavier than water;

c. If the solven t initial boiling point is less than 248 ° F (120°C)

, the n the drainage facility shall be internal so that the p arts are enclosed under the cover while draining. The drainage facility may only be ext ernal for applications where an internal type cannot reasonably fit the cleaning system;

d. All cleaned parts shall be drained for at least 15

seconds after cleaning or until dripping ceases . Parts with blind holes or cavities shall be tipped or rotated before being removed, such that the solvent in the blind
holes or cavities is drained in accordance with the above requirements ;

e. If using a solv ent flow , the cleaning system shall use only a continuous, fluid stream ( not a fine, atomized,

or shower type spray) at a pressure which does not cause liquid solven t to splash outside the solvent container;

f. Solvent agitation, where necessary, shall be carried out only by pump reci rculation, ultrasonics, or a mixer . Air agitation shall not be allowed.

C.5 CLEANING DEVICES

- REMOTE RESERVOIR COLD CLEANERS: Any person owning or operating a remote rese rvoir cold cleaner shall comply with al l of the followi ng requirements :Feather River AQMD 3.14

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a. The operator shall p revent solven t vapors from escaping by using such devices as a cover or a val ve when the
remote reservoir is not being used, cleaned, or repaired;

b. The operator shall d irect sol vent flow in a manner tha t
will prevent liquid solvent from splashing outside of the remote reservoir cold cleaner;

c. All remote reservoir cold cleaners shall consist of :

1. A tank or sink

- like work area which is sloped

s ufficiently to preclude pooling of solvent;

2. A single drain hole, less than 100 square centimeter s (15.5 square inches) in area, for th e solvent to flow
from the sink into the enclosed reservoir;

3. A drain plug or a cover for placement over the top of the sink when the equipment is not in use;

4. A free board height of at least six inches.

C.6 CLEANING DEVICES

- SPRAY EQUIPMENT: Effective December 3 1, 2011, any person cleaning spray application equipment with a solvent containing more than 50 grams of VOC per liter shall use an enclosed system, or equipment that is proven to the satisfaction of the APCO to be equally effective as an enclosed system at controlling emissions. If an enclosed system is used, it shall totally enclose spray guns, cups, nozzles, bowls, and other parts during washing, rinsing and draining procedure s, and it shall be used according to the
manufacturer’s recommendations.

C.7 CLEANING DEVICES

– VEHICLE AND MOBILE EQUIPMENT COATINGS : Effective until December 3 1, 2011
, a person shall not use organic

- based VOC

- containing materials for the clean

- up of

spray e quipment used in Vehicle and Mobile Equipment Coating Operations unless a low emission spray gun cleaner or an enclosed gun cleaner is properly used for cleaning.

C.8 CLEANING DEVICES

– WOOD PRODUCT COATINGS: Effective until

December 3 1, 2011 , a person shall not use organic

- based

VOC

- containing materials for the clea n

- up of spray equipment used in Wood Products C oating O perations unless a low emissions spray gun cleaner or an enclosed gun cleanerFeather River AQMD 3.14

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is properly used for cleaning. Spray gun nozzles may be soaked in organic

- based materials for cleaning provided the container (not to exceed five (5) gallons in size) is kept tightly covered at all times except when accessing the
container. These provision s shall not apply to Wood Products Coating Operat ions using less than 55 gallons of coatings and/or strippers per year.

C.9 EMISSION CONTROL SYSTEM: In lieu of complying with the requirements in Sections C. 1, C. 2, or C. 6 of this Rule, a operator may comply by using a collection and control
device in associ ati on with surface preparation and clean

- up provided that :

a. T he system is appr oved in writing by the APCO; and

b. D uring emission producing activities, the system’ s control device shall have a capture efficiency of at least 90 percent by weight of the emissions generated
, and one of the following requirements:

1. T he control device has a control effic iency of at least 95 percent by weight; or

2. The VOC emission control system has an output of less than 50 parts per million (ppm) by weight calculated

a s carbon with no dilution , as verified by Section

F.2

.

C.10 STORAGE AND DISPOSAL

– GENERAL REQUIREMENTS : All VOC

containing materials
, whether in their form fo r intended

use or as a waste or used product, includi ng items such as cloth or paper laden with VOC containin g materials, shall
be stored in non

- absorbent, non

- leaking containers which shall be kept closed at all times, excep t when filling or emptying, and disposed of in a manner to prevent evaporation of VOCs into the atmosphere. Waste sol vent and

waste solvent residues shall be disposed of by one of the following methods:

a. A commercial waste solvent reclamation service licensed by the State of California;

b. At a facility that is federally or state licensed to treat, store, or dispose of such waste;Feather River AQMD 3.14

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c. Recy cling in conformance with Section 25143.2 of the
California Health and Safety Code

.

D. ADMINISTRATIVE REQUIREMENTS

D.1 PROHIBITION OF SPECIFICATION: A person shall not specify the use of any solvent u sed for surface preparation and

clean

- up subject to the pr ovisions of this rule that does
not meet the limits and requirements of this rule where such applications result i n a violation of this rule. The requirements of this Sec tion shall apply to all written or oral contracts.

D.2 COMPLIANCE STATEMENT REQUIREMENT: Any person who sells or distributes any solvent subject to this rule shall make available to the pu rchaser at the time of sale the following information:

a. The name of the solvent and the solvent manufacturer;

b. The maximu m VOC content of the solvent as applied. The

VO C content shall be expressed as grams of VOC per liter or pounds of VOC per gallon of solvent
, as determined pursuant to Section F

. 2;

c. Recommendations regarding thinning, reducing
, or mixing with any solvent, if applicable.

D.3 OPERATION AND MA INTENANCE PLAN (O&M PLAN): Any person using

an emission control device pursuant to Section C.9 of this

Rule must submit an O&M Plan

. The O&M Plan shall be submitted prior to operation of new control devices and no later than December 31, 2011 for existing control devices. The O&M Plan shall specify operation and maintenan ce procedures which will demonstrate continuous operation of
the control device during periods of emissio n producing operations. The O&M Plan shall also specif y which records must be kept to document these operat ion and maintenance procedures. These records shall comply with the requirements of Section E. 2 of this Rul e.

E. MONITORING AND RECORDS

E.1 RECORDKEEPING

- GENERAL: Any person using solvent s sub ject

to this Rule, except those exempt per Section A.3 , shallFeather River AQMD 3.14

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maintain records that contain all the data necessary to verify c ompliance and shall include the following:

a. The amount of each solvent used at each p rocess, on a monthly basis. The following information should be
included:

1. The name of the solvent and the solvent manufacturer;

2. The VOC c ontent of the solvent
, expressed in grams/liter or lb s /gallon;

3. The mix ratio for the solvent , if applicable ;

4. The applicable VOC category, as listed in Table 1 of this Rule;

5. A d escription of the cleaning device or method of application , as listed in Section C.2 of this Rule;

6. The date and amount of solvent added;

7. The date and amount of waste solvent removed , if applicable

.

b. A copy of the Manufacturer’s prod uct data sheet or

ma terial safety data sheet of each solvent used.

c. Any other records needed to verify compliance with this

rule.

E.2 RECORDKEEPING

- EMISSION CONTROL SYSTEMS: If compliance with this rule is achieved through the use of an emission control sys tem, the owner or operator shall maintain all of the following in addition to the provisions of Section E.1 :

a. Dail y usage records of all solvents;

b. Daily records o f key operating parameters such as temperat ures, pressures, flow rates , and hours of

ope ration of the control device to verify compliance of the capture and control device;

c. Maintenance work which interferes with the operation of
the control device.Feather River AQMD 3.14

- 15

E.3 BURDEN OF PROOF: Any person claiming exemption pursuant to
Section A.3 shall have information available such as produ ct data or material safety data sheets or records that

wou ld allow the APCO to verify the eligibility of the exemption.

E.4 REPORTING: All records required by Sections E. 1, E. 2, and

E. 3 shall be maintained on site for a period of three years and made available to the APCO upon request.

F. TEST METHODS AND CALCULATIONS

F.1 GENERAL: For the purpo ses of this Rule, the following test
methods or calculati on methods shall be used. Other test
methods determined t o be equ ivalent and approved in writing by the District and the EPA may also be used. VOC emissions or other para meters determined to exceed any limits established by this Rule through the use of any of the following tes t methods or calculations shall constitute a
violation of this Rule.

F.2 VOC CONTENT: The VOC content of organic solvents subject to the provisions of this rule shall be determined by procedures contained in EPA Reference Test Method 24 or 24A, or by using the manufacturer’ s product formulation

data an d the formula listed in Section F. 4.

F.3 EXEMPT COMPOUNDS: Exempt compounds, referenced in Section

B.12. and listed in Rule 1.1

– Definitions, shall be
determined in accordance CARB Method 42 2 or SCAQMD Method
303 (Determination of Exempt Compounds).

F.4 CALCULATION OF VOC CONTENT: The VOC content per volume of solvent shall be calculated by the following equation:

VOC con = ( W S - W W - W ES )

V M Where:

VOC con = Grams of VOC per liter of material

W S = Weight of volatile compounds in grams

W W = Weight of water in grams

WE S = Weight of exempt compounds in grams

V M = Volume of material in liters

F.5 CAPTURE EFFICIENCY: The capture efficiency of a VOC emission control system’ s collection device shall beFeather River AQMD 3.14

- 16

determined according to EPA’s “Guidelines for Determi ning Capture Efficiency,” January 9, 1995 and 40 CFR 51, Appendix M, Methods 204

- 204F, as applicable.

F.6 CONTROL EFFICIENCY: The control efficiency of a VOC
emission control system’s collectio n device shall be determined by using EPA Methods 2, 2A , or 2D for measuring

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

total gaseous organic concentrat ions at the inlet and

outlet of the control device. E PA Method 18 or CARB Method

422 shall be used to de termine the emissions of exempt compounds.

F.7 SPRAY GUN CLEANING SYSTEMS: The determination of emissions of VOC from spra y gun cleaning systems shall be made using

South Coast Air Quality Management District "General Test Method for Determining Solvent Losses from Spray Gun Cleaning Systems" dated O ctober 3, 1989.

F.8 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 (a
w ) in Foods.