SDAPCD Regulation IV -1- Rule 67.11 

9/25/02 

RULE 67.11 WOOD PRODUCTS COATING OPERATIONS 

(Adopted & Effective 3/14/89; Rev. Effective 8/13/97; 

Rev. Effective 9/25/02)

(a) APPLICABILITY

(1) Except as otherwise provided in Section (b), this rule is applicable to all 

wood products coating operations. 

(2) Any coating operation subject to the requirements of Rules 67.0 or 67.18 

shall not be subject to this rule. 

(3) Rule 66 shall not apply to any coating operation which is subject to this rule. 

(b) EXEMPTIONS

(1) The provisions of Sections (d), (e) and (f) shall not apply to the following: 

 (i) A stationary source which applies less than 500 gallons of coatings to 

wood products in every consecutive twelve-month period. It shall be the responsibility of any person claiming this exemption to maintain monthly purchase and 

monthly or daily usage records. These records shall be maintained onsite for three 

years and made available to the District upon request. 

 (ii) Coatings applied using non-refillable handheld aerosol spray 

containers. 

(2) The provisions of Subsection (d)(1) shall not apply to the following: 

 (i) Any coatings when applied by the use of air brushes with a coating 

capacity of two ounces (59.1 ml) or less. 

 (ii) Any coatings when applied during touch-up operations. 

(3) The provisions of Subsections (d)(2), (d)(3) and (d)(34) shall not apply to 

coatings applied to wooden musical instruments. 

(c) DEFINITIONS

 

For the purposes of this rule the following definitions shall apply: 

 (1) "Adhesive" means a material applied to a wood surface for the sole purpose 

of bonding the wood surface with another wood or non-wood surface by attachment. 

 (2) "Binder" means a non-volatile polymeric organic material, such as a resin, 

which forms a surface film during coating applications. 
Regulation IV -2- Rule 67.11 

 (3) "Clear Sealer" means a coating which contains binders, but not opaque 

pigments, and is specifically formulated to seal wood surfaces prior to the application of 

subsequent coatings. 

 (4) "Clear Topcoat" means a final coating which contains binders, but not 

opaque pigments, and is specifically formulated to form a transparent or translucent 

solid protective film. Clear topcoats include clear lacquers and varnishes but exclude 

conversion varnishes. 

 (5) "Coating" means a material containing more than 20 grams per liter of VOC 

as applied, less water and exempt compounds, which can be applied as a thin layer to a 

substrate, and which either dries or cures to form a continuous solid film, or impregnates 

a substrate for protection, decorative, or functional purposes. Such materials include, 

but are not limited to paints, varnishes, sealers, lacquers, inks, fillers, washcoats, toners, 

and stains but exclude adhesives. 

 (6) "Coating Operation" means all steps involved in the application, drying 

and/or curing of surface coatings, including touch-up operations, and associated 

stripping, surface preparation and coating application equipment cleaning. 

 (7) "Conversion Varnish" means a topcoat which is comprised of a homogeneous liquid (alkyd-amino resin), which when acid catalyzed and applied, hardens by 

evaporation and polymerization. 

 (8) "Dip Coat" means a coating application method accomplished by dipping an 

object into the coating material. 

 (9) "Electrostatic Spray" means a coating application method accomplished by 

charging atomized paint particles for deposition by electrostatic attraction. 

 (10) "Exempt Compound" means the same as defined in Rule 2. 

 (11) "Filler" means a material used to fill in cracks, grains and imperfections of 

wood before applying a coating. 

 (12) "Flow Coat" means a coating application method accomplished by flowing 

a stream of coating over an object. 

 (13) "Glaze Stain" means a semi-transparent tinted coating applied on a 

previously coated surface to produce a decorative effect. 

 (14) "Hand Application Method" means a coating application method accomplished by applying a coating by manually held, non-mechanically operated equipment. 

Such equipment includes paintbrushes, hand rollers, rags and sponges. 

 (15) "High-Solids Stain" means a stain containing more than one pound of solids 

per gallon of material. 
Regulation IV -3- Rule 67.11 

 (16) "High-Volume Low-Pressure (HVLP) Spray" means a coating application 

method which uses pressurized air at a permanent pressure between 0.1 and 10.0 psig, 

not to exceed 10.0 psig, measured at the air cap of the coating application system. 

 (17) "Ink" means a liquid that contains dyes and/or colorants and is used to make 

markings, but not to protect surfaces. 

 (18) "Low-Solids Coating" means a coating containing one pound of solids or 

less per gallon of material, as supplied. 

 (19) "Low-Solids Stain" means a stain containing one pound of solids or less per 

gallon. 

 (20) "Medium Density Fiberboard (MDF) Coating" means the initial coating 

which is applied directly to the surface of MDF, which is a wood product composed of 

tightly compressed wood fibers bonded with resins, and has a density greater than 45 

pounds per cubic foot. 

 (21) "Multi-Colored Coating" means a coating which exhibits more than one 

color when applied and which is packaged in a single container and applied in a single 

coat. 

 (22) "New Wood Product" means a wood product which has not been 

previously coated. A wood product from which coatings have been removed to repair 

flaws in initial coating applications is a new wood product. 

 (23) "Pigmented Coating" means an opaque coating containing binders and 

colored pigments, and formulated to hide the wood surfaces. 

 (24) "Pigmented Primer, Sealer, and Undercoat" means opaque coatings 

which contain binders and colored pigments formulated to hide the wood surface, that 

are applied prior to the topcoat to provide a firm bond, level the wood product surface, 

or seal the wood product surface. 

 (25) "Pigmented Topcoat" means a final opaque coating which contains binders 

and colored pigments, and is specifically formulated to hide the wood surface and form 

a solid protective film. 

 (26) "Refinished Wood Product" means a post-consumer wood product which 

has had some or all of the coatings removed, and to which new coatings are applied in 

order to preserve or restore the post-consumer wood product to its original condition. A 

wood product from which coatings have been removed to repair flaws in initial coatings 

applications is not a refinished wood product. 

 (27) "Roll Coat" means a coating application method accomplished by rolling a 

coating onto a flat surface using a roll applicator. 
Regulation IV -4- Rule 67.11 

 (28) "Sealer" means a coating which contains binders and which seals wood 

surfaces prior to the application of subsequent coatings. 

 (29) "Stationary Source" means the same as defined in Rule 2. 

 (30) " Stripper" means a liquid applied to remove a coating or coating residue. 

 (31) "Toner" means a coating which contains not more than one pound of 

binders and dyes or pigments per gallon of coating and which is used to add tint to a 

coated surface. 

 (32) "Touch-up Operation" means the portion of a coating operation which is 

incidental to the main coating process but necessary to cover minor imperfections or 

minor mechanical damage incurred prior to intended use, or to achieve coverage as 

required. 

 (33) "Transfer Efficiency" means the ratio of the weight of coating solids 

adhering to the part being coated to the weight of coating solids used in the application 

process expressed as a percentage. 

 (34) “Uncontrolled VOC Emissions” means VOC emissions from a wood 

products coating operation, which occurred or would have occurred in the absence of 

any air pollution control equipment added or process modification made on or after 

September 25, 2002. 

 (35) "Volatile Organic Compound" (VOC) means the same as defined in Rule 2. 

 (36) "VOC Content Per Pound of Coating Solids" means the weight of VOC 

per weight of coating solids and can be calculated by the following equation: 

Cs = Ws – Ww – Wes

Wr

where: 

Cs = VOC content per pound of coating solids 

Ws = Weight of volatile compounds, in pounds 

Ww = Weight of water, in pounds 

Wes = Weight of exempt compounds, in pounds 

Wr = Weight of coating solids, in pounds 

 (37) "VOC Content Per Volume of Coatings, Less Water and Exempt 

Compounds" means the same as defined in Rule 2. 

 (38) "VOC Content Per Volume of Material" means the same as defined in 

Rule 2. 
Regulation IV -5- Rule 67.11 

 (39) "Washcoat" means a coating containing not more than one pound of solids 

per gallon, which is used to seal wood surfaces, prevent undesired staining and control 

penetration. A washcoat may also be used to provide a barrier coat when paper 

laminates are applied to the wood surface, or when glazes are applied during the coating 

operation. 

 (40) "Wood Products" means any objects that are made of or primarily 

fabricated with solid wood, wood composition, bamboo and/or rattan, including 

furnishings, art objects, tables, chairs, beds, sofas, and shutters and cabinets which are 

not permanently attached to stationary structures at the time of coating. 

(d) STANDARDS 

 (1) Application Equipment 

Except as provided in Subsection (b)(2), no coatings shall be applied unless one of 

the following application methods is used: 

 (i) Hand application method, or 

 (ii) Dip coat, or 

 (iii) Roll coat, or 

 (iv) Flow coat, or 

 (v) Electrostatic spray, or 

 (vi) High-volume low-pressure (HVLP) spray, or 

 (vii) Other coating application methods that are demonstrated to have a 

transfer efficiency at least equal to one of the above application methods, and 

which are used in such a manner that the parameters under which they were tested 

are permanent features of the method. Such coating application methods shall be 

approved in writing by the Air Pollution Control Officer prior to use. 

 (2) VOC Limits for New Wood Products 

 (i) Except as provided in Subsection (d)(2)(ii), a person shall not apply any 

coating to a new wood product with a VOC content in excess of the following limits 

expressed as either grams of VOC per liter of coating (g/L) or pounds of VOC per 

gallon of coating (lb/gal), as applied, less water and exempt compounds: 
Regulation IV -6- Rule 67.11 

CATEGORY VOC LIMITS

 g/L lb/gal

Clear Topcoats 680 5.7 

Conversion Varnishes 550 4.6 

Fillers 500 4.2 

High-Solids Stains 700 5.8 

Inks 500 4.2 

Medium Density Fiberboard (MDF) Coatings 680 5.7 

Multi-Colored Coatings 685 5.7 

Pigmented Coatings 600 5.0 

Sealers 680 5.7 

Any Other Coatings 420 3.5 

 (ii) A person shall not apply the following low-solids coatings to a new 

wood product with a VOC content in excess of the following limit expressed as 

either grams of VOC per liter of material (g/L) or pounds of VOC per gallon of 

material (lb/gal), as applied: 

CATEGORY VOC LIMITS

 g/L lb/gal

Low-Solids Stains, Toners or Washcoats 700 5.8 

Any Other Low-Solids Coatings 480 4.0 

 (iii) Except as provided in Subsection (d)(2)(iv), on and after July 1, 2005, a 

person shall not apply any coating to a new wood product with a VOC content in 

excess of the following limits expressed as either grams of VOC per liter of 

coating (g/L) or pounds of VOC per gallon of coating (lb/gal), as applied, less 

water and exempt compounds: 

CATEGORY VOC LIMITS

 g/L lb/gal

Clear Topcoats 275 2.3 

Conversion Varnishes 550 4.6 

Fillers 500 4.2 

High-Solids Stains 550 4.6 

Inks 500 4.2 

Medium Density Fiberboard (MDF) Coatings 550 4.6 

Multi-Colored Coatings 685 5.7 

Pigmented Coatings 275 2.3 

Sealers 550 4.6 

Any Other Coatings 275 2.3 

 (iv) On and after July 1, 2005, a person shall not apply the following lowsolids coatings to a new wood product with a VOC content in excess of the 

following limit expressed as either grams of VOC per liter of material (g/L) or 

pounds of VOC per gallon of material (lb/gal), as applied: 
Regulation IV -7- Rule 67.11 

CATEGORY VOC LIMITS

 g/L lb/gal

Low-Solids Stains, Toners or Washcoats 480 4.0 

Any Other Low-Solids Coatings 480 4.0 

The requirements of Subsection (d)(2) may be met using an Alternative Emission 

Control Plan (AECP) that has been approved pursuant to Rule 67.1. 

(3) VOC Limits for Refinished Wood Products 

(i) Except as provided in Subsection (d)(3)(ii), a person shall not apply 

any coating to a refinished wood product with a VOC content in excess of the 

following limits expressed as either grams of VOC per liter of coating (g/L) or 

pounds of VOC per gallon of coating (lb/gal), as applied, less water and exempt 

compounds: 

CATEGORY VOC LIMITS

 g/L lb/gal

Clear Topcoats 680 5.7 

Fillers 500 4.2 

High-Solids Stains 700 5.8 

Inks 500 4.2 

Medium Density Fiberboard (MDF) Coatings 680 5.7 

Multi-Colored Coatings 685 5.7 

Pigmented Coatings 600 5.0 

Sealers 680 5.7 

Any Other Coatings 420 3.5 

 (ii) A person shall not apply the following low-solids coatings to a 

refinished wood product with a VOC content in excess of the following limit 

expressed as either grams of VOC per liter of material (g/L) or pounds of VOC per 

gallon of material (lb/gal), as applied: 

CATEGORY VOC LIMITS

 g/L lb/gal

Low-Solids Stains, Toners or Washcoats 700 5.8 

Any Other Low-Solids Coatings 480 4.0 

The requirements of Subsection (d)(3) may be met using an Alternative Emission 

Control Plan (AECP) that has been approved pursuant to Rule 67.1. 

(4) VOC Limits for Large Coating Operations for New Wood Products 

The requirements of this Subsection shall apply to a stationary source where the 

combined uncontrolled emissions of VOC from all wood products coating operations, 

are greater than or equal to 25 tons in a calendar year. 

(i) Except as provided in Subsection (d)(4)(ii) and (iii), a person shall not 

apply any coating to a new wood product with a VOC content in excess of the 

following limits, expressed as either grams of VOC per liter of coating (g/L), or 
Regulation IV -8- Rule 67.11 

pounds of VOC per gallon of material (lb/gal), as applied, less water and exempt 

compounds, or pounds of VOC per pound of solids (lb/lb), as applied: 

CATEGORY VOC LIMITS

 g/L lb/gal lb/lb

Clear Sealers 550 4.6 1.39 

Clear Topcoats 550 4.6 1.37 

Conversion Varnishes 550 4.6 1.37 

Fillers 500 4.2 0.66 

High-Solid Stains 550 4.6 1.23 

Inks 500 4.2 0.96 

Medium Density Fiberboard (MDF) Coatings 635 5.3 1.90 

Multi-Colored Coatings 685 5.7 2.60 

Pigmented Primers, Sealers & Undercoats 550 4.6 1.06 

Pigmented Topcoats 550 4.6 1.10 

Any Other Coatings 420 3.5 0.51 

 If a person elects to use a coating that complies with a VOC limit expressed 

in pounds of VOC per pound of solids, the coating’s VOC content, as applied, shall 

not exceed the VOC limit expressed in grams per liter or pounds per gallon 

specified for that coating category in Subsection (d)(2)(i). 

 (ii) A person may add up to 10% by volume of VOC to a topcoat, primer, 

sealer, or undercoat that contains acetone, if at the time of application the relative 

humidity is greater than 70% and the temperature is below 65o F, provided that: 

(A) The coating is not applied during a period from April 1 to 

October 31 of any year; and 

(B) Prior to the addition of VOC, the coating does not contain more 

than 550 grams of VOC per liter of coating, less water and exempt 

compounds; and 

(C) After the addition of VOC, the coating’s VOC content, as 

applied, does not exceed the VOC limit specified for that coating category in 

Subsection (d)(2)(i). 

 (iii) A person shall not apply the following coatings to a new wood product 

with a VOC content in excess of the following limits expressed as either grams of 

VOC per liter of material or pounds of VOC per gallon of material, as applied: 

CATEGORY VOC LIMITS

 g/L lb/gal

Low-Solids Stains, Toners, and Washcoats 480 4.0 

Any Other Low-Solids Coatings 480 4.0 

 (iv) On or after July 1, 2005, a person shall not apply any coating to a new 

wood product with a VOC content in excess of the limits specified in (d)(2)(iii) 

and (d)(2)(iv). 
Regulation IV -9- Rule 67.11 

The requirements of Subsection (d)(4) may be met using an Alternative Emission 

Control Plan (AECP) that has been approved pursuant to Rule 67.1. 

(5) Surface Preparation and Stripping Materials 

Except as provided in Subsection (d)(6), a person shall not use VOC containing 

materials for surface preparation or stripping unless: 

 (i) The material contains 200 grams or less of VOC per liter of material; or 

 (ii) The material has an initial boiling point of 190°C (374°F) or greater; or 

 (iii) The material has a total VOC vapor pressure of 20 mm Hg or less, at 

20°C (68°F). 

(6) Cleaning of Application Equipment 

A person shall not use VOC containing materials for the cleaning of application 

equipment used in operations subject to this rule unless: 

 (i) The cleaning material contains 200 grams or less of VOC per liter of 

material; or 

 (ii) The cleaning material has an initial boiling point of 190° C (374°F) or 

greater; or 

 (iii) The cleaning material has a total VOC vapor pressure of 20 mm Hg or 

less, at 20°C (68°F); or 

 (iv) The cleaning material is flushed or rinsed through the application equipment in a contained manner that will minimize evaporation into the atmosphere; or 

 (v) The application equipment or equipment parts are cleaned in a container 

which is open only when being accessed for adding, cleaning, or removing application equipment or when cleaning material is being added, provided the cleaned 

equipment or equipment parts are drained to the container until dripping ceases; or 

 (vi) A system is used that totally encloses the component parts being 

cleaned during the washing, rinsing, and draining processes; or 

 (vii) Other application equipment cleaning methods that are demonstrated to 

be as effective as any of the equipment described above in minimizing the 

emissions of VOC to the atmosphere, provided that the device has been tested and 

approved by the Air Pollution Control Officer prior to use. 
Regulation IV -10- Rule 67.11 

 (7) No person shall require for use or specify the application of a coating subject 

to this rule if such use or application results in a violation of this rule. This prohibition 

shall apply to all written or oral contracts under the terms of which any coating is applied 

to any wood product at any location within San Diego County. 

 (8) Spray application equipment shall not be used to dispose of waste coatings or 

solvents into the air. 

(e) CONTROL EQUIPMENT

 (1) In lieu of complying with the provisions of Subsections (d)(2), (d)(3), (d)(4), 

(d)(5) and/or (d)(6) of this rule, a person may use an air pollution control system which: 

 (i) Has been installed in accordance with an Authority to Construct; and 

 (ii) Includes an emission collection system which captures organic gaseous 

emissions, including emissions associated with applicable coating, equipment 

cleaning, and surface preparation operations, and transports the captured emissions 

to an air pollution control device; and 

 (iii) Has a combined emissions capture and control device efficiency of at 

least 85% by weight; and 

 (iv) For coating operations subject to Subsection (d)(4), has a continuous 

monitoring system installed, operated, calibrated and maintained, as approved by 

the Air Pollution Control Officer. The continuous monitoring system shall 

monitor and record all key system operating parameters necessary to ensure 

compliance with Subsection (e)(1)(iii) above at least every 15 clock minutes or a 

shorter period of time as determined necessary by the Air Pollution Control 

Officer. Compliance with (e)(1)(iii) may be determined by VOC emissions source 

testing and/or evaluating continuous monitoring data. 

(2) A person electing to use control equipment pursuant to Section (e)(1) shall 

submit to the Air Pollution Control Officer for approval an Operation and Maintenance 

plan for the proposed emission control device and emission collection system and 

receive approval prior to operation of the control equipment. Thereafter, the plan can be 

modified, with Air Pollution Control Officer approval, as necessary to ensure 

compliance. Such plan shall: 

 (i) Identify all key system operating parameters. Key system operating 

parameters are those necessary to ensure compliance with Subsection (e)(1)(iii), 

such as temperature, pressure, and/or flow rate; and 

 (ii) Include proposed inspection schedules, anticipated ongoing 

maintenance, and proposed recordkeeping practices regarding the key system 

operating parameters. 
Regulation IV -11- Rule 67.11 

 (3) Upon approval of the Air Pollution Control Officer, a person subject to the 

requirements of Section (e) shall implement the Operation and Maintenance plan and 

shall comply with the provisions of the approved plan thereafter. 

(f) RECORDKEEPING

All records shall be retained onsite for at least three years and shall be made available to 

the District upon request. All records for a large coating operation subject to the requirements 

of Subsection (d)(4) shall be retained onsite for at least five years. 

 (1) Any person subject to the provisions of Subsections (d)(2), (d)(3), (d)(4), 

(d)(5) and/or (d)(6) of this rule shall maintain records in accordance with the following: 

 (i) Maintain a current list of coatings, strippers, surface preparation and 

cleaning materials in use which provides all of the VOC data necessary to evaluate 

compliance, including but not limited to: 

(A) Manufacturer name and identification for each coating or coating 

component for multi-component coatings (this includes any components such 

as bases, catalysts, thinners or reducers, when supplied in separate 

containers), stripper, surface preparation and cleaning material; and 

(B) Mix ratio of components; and 

(C) VOC content expressed in either grams per liter, as applied, less 

water and exempt compounds, pounds per gallon, as applied, less water and 

exempt compounds, or pounds per pound of solids; vapor pressure; and/or 

initial boiling point, as applicable, for each coating, or coating component for 

multi-component coatings, stripper, surface preparation and cleaning 

material; and 

(D) For each coating or coating component that contains VOCs and 

water or exempt compounds and that is used in a mixture with other VOC 

containing materials or is a low-solids stain, toner, washcoat, or other lowsolids coating, the weight of VOC per volume of material expressed in either 

grams per liter or pounds per gallon, volume percent water and exempt 

compounds; and 

(E) Other information that the Air Pollution Control Officer finds is 

necessary to determine compliance with the VOC content standards of 

Subsections (d)(2), (d)(3), or (d)(4) of this rule. 

 (ii) Maintain current documentation to demonstrate applicability of any 

coating category pursuant to Subsection (d)(2), (d)(3), or (d)(4) of this rule. 

 (iii) At a minimum, maintain monthly records of the amount of each coating 

or each coating component for multi-component coatings used. 
Regulation IV -12- Rule 67.11 

 (iv) At a minimum, maintain monthly records of the amount of each 

stripper, surface preparation and cleaning material used. 

 (v) Maintain records of the dates and amounts of material added to coating 

dip tanks. 

(2) Any person using control equipment pursuant to Section (e) of this rule shall: 

 (i) Maintain records in accordance with Subsection (f)(1); and 

 (ii) For all coatings, strippers, surface preparation and/or cleaning materials 

not in compliance with Subsections (d)(2), (d)(3), (d)(4), (d)(5), or (d)(6) of this 

rule, maintain daily records of the amount of each coating or each coating 

component for multi-component coatings, stripper, surface preparation and 

cleaning material used; and 

 (iii) Maintain daily records of key system operating parameters as approved 

in the Operation and Maintenance plan. Such records shall be sufficient to 

document continuous compliance with Subsection (e)(1)(iii) during periods of 

emission producing activities. 

(g) TEST METHODS 

 (1) Perfluorocarbon (PFC) compounds shall be assumed to be absent from a coating, cleaning, or surface preparation material subject to this rule unless a manufacturer of 

the material or a facility operator identifies the specific individual compound(s) and the 

amount(s) present in the material and provides an EPA and Air Resources Board 

approved test method which can be used to quantify the specific compounds. 

 (2) Measurements of transfer efficiency subject to Subsection (d)(1)(vii) of this 

rule shall be conducted in accordance with the South Coast Air Quality Management 

District’s "Spray Equipment Transfer Efficiency Test Procedure for Equipment User," as 

it exists on September 25, 2002.

 (3) Measurement of the VOC content of coatings, surface preparation and 

cleaning materials subject to Subsections (d)(2), (d)(3), (d)(4), (d)(5)(i), or (d)(6)(i) of 

this rule shall be conducted in accordance with EPA Test Method 24 (40 CFR 60, 

Appendix A). 

 (4) Measurement of the VOC content of ultraviolet radiation-cured coatings 

subject to Subsections (d)(2), (d)(3), or (d)(4) of this rule shall be conducted in 

accordance with ASTM Standard Test Method D5403-93 (1998), or its most current 

version. Measurement of the water content and exempt solvent content, if applicable, 

shall be conducted and reported in accordance with ASTM Standard Test Methods D 

3792-99, D 4017-02 and D 4457-02, or their most current versions. 
Regulation IV -13- Rule 67.11 

 (5) Measurement of the initial boiling point of cleaning and surface preparation 

materials subject to Subsection (d)(5)(ii) or (d)(6)(ii) of this rule shall be conducted in 

accordance with ASTM Standard Test Method D1078-01, or its most current version for 

distillation range of volatile organic liquids. 

 (6) Calculation of total VOC vapor pressure for materials subject to Subsection 

(d)(5)(iii) or (d)(6)(iii) of this rule shall be conducted in accordance with the District's 

"Procedures for Estimating the Vapor Pressure of VOC Mixtures," as it exists on June 

27, 1995. If the vapor pressure of the liquid mixture, as calculated by this procedure, 

exceeds the limits specified in Subsection (d)(5)(iii) or (d)(6)(iii), the vapor pressure 

shall be determined in accordance with ASTM Standard Test Method D2879-97, or its 

most current version. The solvent composition shall be determined using one of the 

following ASTM standard recommended practices: E 168-99, E 169-99 or E 260-96 

(2001), or their most current versions. The fraction of water and exempt compounds in 

the liquid phase shall be determined by using ASTM Standard Test Methods D3792-99, 

or D4017-02 and D4457-02, or their most current versions, and shall be used to calculate 

the partial pressure of water and exempt compounds. The results of vapor pressure 

measurements obtained using ASTM Test Method D2879-97 shall be corrected for 

partial pressure of water and exempt compounds. 

 (7) Measurement of solvent losses from alternative application cleaning 

equipment subject to Subsection (d)(6)(vii) shall be conducted and reported in 

accordance with the South Coast Air Quality Management District’s "General Test 

Method for Determining Solvent Losses from Spray Gun Cleaning Systems," as it exists 

on September 25, 2002. 

 (8) Measurement of control device efficiency subject to Subsection (e)(1) of this 

rule shall be conducted in accordance with EPA Methods 25A and/or 18 (40 CFR 60) 

and in accordance with a protocol approved by the Air Pollution Control Officer. 

 (9) Measurement of the emission collection system capture efficiency subject to 

Subsection (e)(1)(iii) of this rule shall be determined according to EPA Method 204 and 

Method 204A-F “Capture Efficiency” (40 CFR 51, Appendix M) and EPA’s 

"Guidelines for Determining Capture Efficiency," dated January 9, 1995, using a 

protocol approved by the Air Pollution Control Officer. Subsequent to the initial 

compliance demonstration period, applicable key system operating parameters, as 

approved by the Air Pollution Control Officer, may be used as verification that capture 

efficiency has not diminished. 

 (10) Determination of the solids content of coatings shall be conducted in 

accordance with EPA Test Method 24 (40 CFR 60, Appendix A).