SACAQMD RULE 463 WOOD PRODUCTS COATINGS
LAST REVISED 12/05/96



RULE 463

WOOD PRODUCTS COATINGS

(Adopted 09-05-96)

(Amended 12-5-96)


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 uses, 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): Equipment used to apply coatings by means of a gun which is designed to be operated and which is operated between 0.1 and 10 psig air pressure measured dynamically at the center of the air cap and at the air horns.

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 550 (1.37) 275 (0.35)
Conversion Varnish 550 (1.37) 550 (1.20)
Filler 500 (0.66) 275 (0.18)
High-Solid Stain 550 (1.23) 350 (0.42)
Inks 500 (0.96) 500 (0.96)
Mold-Seal Coating 750 (4.20) 750 (4.20)
Multi-Colored Coating 685 (2.60) 275 (0.33)
Pigmented Coating 550 (1.10) 275 (0.25)
Sealer 550 (1.39) 275 (0.36)

COATING

VOC LIMITS

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

On and After

7/1/97

On and After

7/1/2005

Low-Solid Stains, Toners, Washcoats 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-VOC/lbs-solids)

Less water and Less Exempt Compounds

On and After 7/1/97

Clear Topcoats 680 (2.5)
Conversion Varnish 550 (0.1.20)
Filler 500 (0.96)
High-Solid Stain 700 (2.57)
Inks 500 (0.96)
Mold-Seal Coating 750 (4.20)
Multi-Colored Coating 680 (2.60)
Pigmented Coating 600 (1.60)
Sealer 680 (2.5)

COATING

VOC LIMITS

Grams Per Liter of Coating (lbs-VOC/lbs-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:

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:

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:

405.1 Pounds of VOC per pound of solids is the weight of VOC per weight of coating solids within any given volume of coating, and can be calculated by the test method found in Section 503.2 and the following equation:

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