SACAQMD RULE 463 WOOD PRODUCTS COATINGS
LAST REVISED 09/05/96


RULE 463 WOOD PRODUCTS COATINGS

(Adopted 09-05-96)

INDEX

100 GENERAL

200 DEFINITIONS



300 STANDARDS



400 ADMINISTRATIVE REQUIREMENTS

500 MONITORING AND RECORDS




100 GENERAL

101 - PURPOSE: To establish limits on the emission of volatile organic compounds (VOC) from coatings and strippers used on wood products, and from products used in surface preparation and cleanup.

102 - APPLICABILITY: This rule applies to any person who manufactures, blends, sells, repackages, distributes, or specifies the use of wood products coatings, and/or strippers for use within the District.

110 - EXEMPTIONS:



200 DEFINITIONS

201 - AEROSOL-SPRAY CONTAINER: Any hand-held, pressurized, non-refillable container of 1 liter (1.1 quarts) or less, where the contents are released when a valve on the container is depressed.

202 - AFFECTED POLLUTANT: Volatile organic compounds (VOC), as defined in Section 237.

203 - BINDERS: Non-volatile polymeric organic materials (resins) which form the surface film in coating applications.

204 - CAPTURE EFFICIENCY: Expressed in percent, capture efficiency is the ratio of the weight of the VOC in the effluent stream entering a control device to the weight of the VOC emitted from wood product coating operations, both measured simultaneously, and can be calculated by the following equation:

205 - CLEANUP MATERIAL: A VOC-containing material used to clean application equipment used in wood products coating operations.

206 - CLEAR TOPCOAT: A final coating which contains binders, but not opaque pigments, and is specifically formulated to form a transparent or translucent solid protective film.

207 - CLOSED CONTAINER: A container which has a cover where the cover meets with the main body of the container without any gaps between the cover and the main body of the container.

208 - COATING: A material which is applied to a surface and which forms a film in order to beautify and/or protect such surface. "Coating" includes, but is not limited to, materials such as topcoats, stains, sealers, fillers, conversion varnish, pigmented coating, multicolored coating, moldseal coating, washcoat, and toner.

209 - CONTROL EFFICIENCY: Expressed in percent, control efficiency is the ratio of the weight of the VOC removed by the control device from the effluent stream entering the control device to the weight of VOC in the effluent stream entering the control device, both measured simultaneously. Control efficiency is calculated by the following equation:

210 - CONVERSION VARNISH: A coating comprised of a homogeneous (alkyd-amino resin) liquid which, when acid catalyzed and applied, hardens upon exposure to air or heat, by evaporation and polymerization, to form a continuous film that imparts protective or decorative properties to wood surfaces. When used as a self sealing system, conversion varnish shall not be subject to the VOC limit for sealers, on and after 7-1-2005, as specified in section 302.

211 - DIP COAT: A coating which is applied by dipping an object into a vat of coating material and allowing any excess coating material to drain off.

212 - ELECTROSTATIC APPLICATION: The electrical charging of atomized coating droplets for deposition by electrostatic attraction.

213 - EMISSIONS UNIT: An identifiable operation or piece of process equipment such as an article, machine, or other contrivance which controls, emits, may emit, or results in the emissions of any affected pollutant directly or as fugitive emissions.

214 - ENCLOSED GUN CLEANER:

215 - EXEMPT COMPOUND: For the purposes of this rule, "exempt compound" has the same meaning as in Rule 101-GENERAL PROVISIONS AND DEFINITIONS

216 - FILLER: A preparation used to fill in cracks, grains, etc., of wood before applying a coating.

217 - FLOW COAT: A coating which is applied by flowing a stream of coating over an object and allowing any excess coating material to drain off.

218 - HIGH-SOLIDS STAIN: Stains containing more than 454 grams (1 pound) of solids per 3.785 liters (1 gallon), by weight, and can include wiping stains, glazes, and opaque stains.

219 - HIGH-VOLUME, LOW-PRESSURE (HVLP): Spray coating application equipment with air pressure between 0.1 and 10.0 pounds per square inch gauge (psig) and air volume equal to or greater than 15.5 cfm per spray gun and which operates at a maximum fluid delivery pressure of 50 psig.

220 - INK: A fluid that contains dyes and/or colorants and is used to make markings, but not to protect surfaces.

221 - LOW-SOLIDS STAINS: Stains containing 454 grams (1 pound) or less of solids per 3.785 liters (1 gallon) or less, by weight.

222 - LOW-VOLUME, LOW-PRESSURE (LVLP) EQUIPMENT: Spray coating application equipment with air pressure between 0.1 and 10.0 pounds per square inch gauge (psig) and air volume less than 15.5 cfm per spray gun and which operates at a maximum fluid delivery pressure of 50 psig.

223 - MOLD-SEAL COATING: The initial coating applied to a new mold or repaired mold to provide a smooth surface which, when coated with a mold release coating, prevents products from sticking to the mold.

224 - MULTI-COLORED COATING: A coating which exhibits more than one color when applied, and which is packaged in a single container and applied in a single coat.

225 - NEW WOOD PRODUCT: A wood product which has not been previously coated. A wood product from which uncured coatings have been removed to repair flaws in initial coatings applications is a new wood product.

226 - PIGMENTED COATINGS: Opaque coatings which contain binders and colored pigments which are formulated to hide the wood surface, either as an undercoat or topcoat.

227 - REACTIVE DILUENT: A liquid component of a coating which is a VOC during application, and one in which, through chemical or physical reactions, such as polymerization, becomes an integral part of a finished coating.

228 - REFINISHING OPERATION: The steps necessary to remove cured coatings and to repair, preserve, or restore a wood product.

229 - REPAIR COATING: A coating used to recoat portions of a product which has sustained mechanical damage to the coating following normal coating operations.

230 - ROLL COATER: A series of mechanical rollers that forms a thin coating film on the surface of the roller, which is applied to a substrate by moving the substrate underneath the roller.

231 - SEALER: A coating, containing binders, which seals the wood prior to application of subsequent coatings.

232 - STENCIL COATING: An ink or a pigmented coating which is rolled or brushed onto a template or stamp in order to add identifying letters and/or numbers to wood products.

233 - STRIPPER: A liquid used to remove cured coatings, cured inks, and/or cured adhesives.

234 - SURFACE PREPARATION MATERIAL: A VOC-containing material applied to the surface of any wood product, prior to the application of coatings, to clean the wood product or to promote the adhesion of subsequent coatings.

235 - TONER: A wash coat which contains binders and dyes or pigments to add tint to a coated surface.

236 - TOUCH-UP COATING: A coating used to cover minor coating imperfections appearing after the main coating operation.

237 - VOLATILE ORGANIC COMPOUND (VOC): For the purposes of this rule, "volatile organic compound" has the same meaning as in Rule 101- GENERAL PROVISIONS AND DEFINITIONS.

238 - VOLATILE ORGANIC COMPOUND COMPOSITE PARTIAL VAPOR PRESSURE: The sum of the partial pressures of compounds defined as VOCs.

239 - WASH COAT: A coating that is used to seal wood surfaces, preventing undesired staining, and control penetration. For the purpose of this rule, washcoats shall be considered low-solids coatings and shall contain less than 454 grams (1 pound) of solids per 3.785 liters (1 gallon), by weight. Wash coats with greater than 454 grams (1 pound) of solids per 3.785 liters (1 gallon), by weight, shall be considered sealers.

240 - WOOD PANEL: Any piece of wood, or wood composition, which is solid or laminated, and which is larger than 10 square feet in size, and which is not subsequently cut into smaller pieces.

241 - WOOD PRODUCTS: Surface-coated products which include cabinets (kitchen, bath, and vanity), tables, chairs, beds, sofas, shutters, art objects, and any other coated objects made of solid wood, and/or wood composition.

242 - WOOD PRODUCT COATING APPLICATION OPERATIONS: A combination of coating application steps which may include use of spray guns, flash-off areas, spray booths, ovens, conveyors, and/or other equipment operated for the purpose of applying coating materials.


300 STANDARDS

301 - APPLICATION EQUIPMENT REQUIREMENTS: On and after 7-1-97, a person subject to the provisions of this rule shall not apply any wood product coating to any wood products, unless one of the following application methods is used:

302 - VOC CONTENT OF COATINGS FOR NEW WOOD PRODUCTS:

Except as provided in Sections 110, 305, and 306 no person shall apply any coating, to a new wood product, which has a volatile organic compound (VOC) content exceeding the applicable limits specified below. The VOC content of coatings, except low-solid stains, toners, and washcoats, shall be determined in accordance with Sections 403 and 503.1. The VOC content of low-solid stains, toners and washcoats shall be determined in accordance with Sections 404 and 503.1.







COATING

VOC LIMITS

Grams Per Liter of Coating(lbs VOC/lbs. solids)

Less water and Less Exempt Compounds

On and After

7/1/97

On and After

7/1/2005

Clear Topcoats

Conversion Varnish

Filler

High-Solid Stain

Inks

Mold-Seal Coating

Multi-Colored Coating

Pigmented Coating

Sealer

550 (1.37)

550 (1.37)

500 (0.66)

550 (1.23)

500 (0.96)

750 (4.20)

685 (2.60)

550 (1.10)

550 (1.39)

275 (0.35)

550 (1.20)

275 (0.18)

350 (0.42)

500 (0.96)

750 (4.20)

275 (0.33)

275 (0.25)

275 (0.36)













Low-Solid Stains, Toners, Washcoats

VOC LIMITS

Grams Per Liter of Material (lbs of VOC/lbs. of solids)l

On and After

7/1/97

On and After

7/1/2005

480 (4.00)

120 (1.00)

303 - VOC CONTENT OF COATINGS FOR REFINISHING, REPAIRING, PRESERVING, OR RESTORING WOOD PRODUCTS:  Except as provided in Sections 110, 305, and 306 no person shall apply any coating, to refinish, repair, preserve, or restore a wood product, which has a volatile organic compound (VOC) content exceeding the applicable limits specified below. The VOC content of coatings, except low-solid stains, toners, and washcoats, shall be determined in accordance with Sections 403 and 503.1. The VOC content of low-solid stains, toners and washcoats shall be determined in accordance with Sections 404 and 503.1.









COATING
VOC LIMITS

Grams Per Liter of Coating

(lbs of VOC/lbs of solids)

Less Water and Less Exempt Compounds

On and After 7/1/97

Clear Topcoats

Conversion Varnish

Filler

High-Solid Stains

Inks

Mold-Seal Coating

Multi-Colored Coating

Pigmented Coating

Sealer

680 (2.50)

550 (1.20)

500 (0.96)

700 (2.57)

500 (0.96)

750 (4.20)

680 (2.50)

600 (1.60)

680 (2.50)

VOC LIMITS

Grams Per Liter of Material

(lbs of VOC/lbs of solids)

On and After 7/1/97

Low-Solid Stains, Toners, Washcoats

480 (0.76)

304 - VOC CONTENT FOR STRIPPERS: On and after 7/1/97, a person shall not use a stripper on wood products unless:

305 - EMISSION CONTROL EQUIPMENT:



306 - EMISSIONS AVERAGING PROVISIONS:

307 - EMISSIONS AVERAGING PLAN:

308 - REQUIREMENTS FOR SURFACE PREPARATION AND CLEANUP MATERIALS: Any person subject to this rule shall comply with the following requirements:

309 - COATING EVAPORATIVE LOSS MINIMIZATION: Containers for all VOC-containing coatings shall be covered while in use, in order to minimize evaporative loss to the atmosphere. Covers need not be sealed and may have openings to allow access to the coating being used.


400 ADMINISTRATIVE REQUIREMENTS

401 - LABELING REQUIREMENTS: VOC CONTENT: Each container of any coating, surface preparation material, or cleanup material, or stripper manufactured after 7-1-97 shall display its maximum VOC content of the coating, as applied, and after any thinning as recommended by the manufacturer, or shall have this information provided in a product data sheet supplied with the container. VOC content shall be displayed as grams of VOC per liter of coating (less water and less exempt solvent, and excluding any colorant added to tint bases), surface preparation and cleanup material, or stripper. VOC content displayed may be calculated using product formulation data, or may be determined using the test method in Section 503.1. Alternatively, containers for strippers subject to the provisions of Section 304 may display only the partial vapor pressure.

402 - CALCULATION FOR DETERMINING VOLATILE ORGANIC COMPOUND COMPOSITE PARTIAL VAPOR PRESSURE: VOC composite partial vapor pressure for determination of compliance with Section 304 shall be calculated by the following equation:

(Note: Unable to convert equation graphic at this time, contact the District for a copy or contact the ARB and a copy will be provided to you)

Where:

403 - CALCULATION FOR DETERMINING WEIGHT OF VOC PER VOLUME OF COATING, LESS WATER AND LESS EXEMPT COMPOUNDS: The weight of VOC per combined volume of VOC and coating solids, shall be calculated by the following equation:

404 - CALCULATION FOR DETERMINATION OF VOC CONTENT PER VOLUME OF MATERIAL: The volume of material is defined as the volume of the original material, plus any VOC-containing material added to the original material. The original material is the material before any VOC-containing material such as solvent is added for purposes of mixing or thinning. The VOC content shall exclude any colorant added to a tint base. The weight of VOC per total volume of material shall be calculated by the following equation:

405 - CALCULATION FOR DETERMINATION OF POUNDS OF VOC PER POUND OF SOLIDS:

406 - OPERATION AND MAINTENANCE PLAN ("O&M Plan"): Any person using an approved emission control device pursuant to Section 305 as a means of complying with this rule must submit, with the application for Authority to Construct, pursuant to Rule 201 - GENERAL PERMIT REQUIREMENTS, an O&M Plan for the emission control device to the Air Pollution Control Officer for approval. O&M Plans for emission control devices installed as of prior to the adoption of this rule, if not previously submitted, must be submitted by 7-1-97 and receive approval of the Air Pollution Control Officer. Each O&M Plan shall specify operation and maintenance procedures which will demonstrate continuous operation of the emission control device during periods of emissions-producing operations. Each O&M Plan shall also specify which records must be kept to document these operations and maintenance procedures. These records shall comply with the requirements of Section 501. An O&M Plan shall be implemented upon approval of the Air Pollution Control Officer.

407 - FEASIBILITY AND TECHNOLOGY ASSESSMENT: By 7-1-2003, the Air Pollution Control Officer shall assess the feasibility of the final VOC limits and whether new technology could provide additional emissions reductions to meet the District's Air Quality Management Plan objectives.


500 MONITORING AND RECORDS:

501 - USAGE RECORDS: In addition to any applicable record keeping requirements of either Rule 202 - NEW SOURCE REVIEW, Rule 207 - TITLE V - FEDERAL OPERATING PERMIT PROGRAM, and Rule 209 - LIMITING POTENTIAL TO EMIT, or any other District rule which may be applicable, persons subject to this rule shall maintain the following records in order to evaluate compliance:

502 - DURATION OF RECORDS: All records required by this rule shall be maintained for at least three years, and shall be made available to the Air Pollution Control Officer upon request.

503 - TEST METHODS