(Adopted November 2, 1990)


(a) Applicability Statement

This rule is applicable to any person who supplies, sells, offers for sale, applies, solicits the application of, or manufactures for use in the District any aerosol coating. Exemptions for aerosol coatings which are expressed or implied in other District Rules and Regulations based on container size, usage minimums, or coating category are rescinded and superseded by the requirements of this rule.

(b) Definitions

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

(1) AEROSOL COATING is a mixture of pigments, resins, and liquid and gaseous solvents and propellants packaged in a disposable container for hand-held application. Adhesives in aerosol containers are excluded from this rule.

(2) CLEAR COATINGS are clear and semi-transparent coatings, including lacquers and varnishes, applied to wood substrates to provide a transparent or translucent solid film.

(3) Coating Solid is the non-volatile portion of an aerosol paint product, consisting of the film forming ingredients (pigments and resins).

(4) ELECTRIC INSULATION COATINGS are the outer electrical insulation coating applied to tape insulation of a wire and are specifically formulated to smooth and fill edges.

(5) Exempt Compounds are any of the following compounds which have been determined to be non-precursors of ozone:

(A) Group I (General)

chlorodifluoromethane (HCFC-22)

dichlorotrifluoroethane (HCFC-123)

tetrafluoroethane (HFC-134a)

dichlorofluoroethane (HCFC-141b)

chlorodifluoroethane (HCFC-142b)

(B) Group II (Under Review)

methylene chloride

1,1,1-trichloroethane (methyl chloroform)

trifluoromethane (FC-23)

trichlorotrifluoroethane (CFC-113)

dichlorodifluoromethane (CFC-12)

trichlorofluoromethane (CFC-11)

dichlorotetrafluoroethane (CFC-114)

chloropentafluoroethane (CFC-115)

The Group II compounds may have restrictions on their use because they are toxic or potentially toxic, or upper atmosphere ozone depleters, or cause other environmental impacts. The District Board has adopted a policy which states that the use and emissions of chlorofluorocarbons (CFC) will be phased out at the earliest practicable date in or before 1997.

(6) FLAT COATINGS are coatings which register gloss less than 15 on an 85o meter or less than five on a 60o meter, or which are labeled as a flat coating.

(7) HIGH-TEMPERATURE COATINGS are coatings formulated for and applied to substrates exposed continuously or intermittently to temperatures above 400 degrees Fahrenheit.

(8) INDUSTRIAL MAINTENANCE COATINGS are high performance coatings formulated for and applied to substrates in industrial, commercial, or institutional situations that are exposed to one or more of the following extreme environmental conditions:

(A) immersion in water, wastewater, or chemical solutions (aqueous and non-aqueous solutions), or chronic exposure of interior surfaces to moisture condensation;

(B) acute or chronic exposure to corrosive, caustic or acidic agents, or to chemicals, chemical fumes, chemical mixtures, or solutions;

(C) repeated exposure to temperatures in excess of 250 degrees Fahrenheit;

(D) repeated heavy abrasion, including mechanical wear and repeated scrubbing with industrial solvents, cleaners, or scouring agents; or

(E) exterior exposure of metal structures.

Industrial Maintenance Coatings are not for residential use or for use in areas of industrial, commercial, or institutional facilities such as office space and meeting rooms.

(9) PERCENT VOC BY WEIGHT is the ratio of the weight of VOC to the weight of coating solids, expressed as a percentage of VOC by weight. The percent VOC by weight can be calculated as follows:


% VOC weight =                      x 100

Wcs + Wv

Where: Wv = Standard definition for VOCs, by weight

Wcs = Coating solids by weight, defined as the non-volatile portion of the material.

Note that the expression excludes water and exempt solvents, by definition, by test, or by both.

(10) METALLIC COATINGS are aerosol coatings containing at least 0.4 pound of elemental metallic pigment per gallon (50 grams/liter of coating as applied).

(11) MULTI-COLORED COATINGS are coatings which exhibit more than one color when applied and which are packaged in a single container.

(12) NON-VOLATILE PORTION OF THE MATERIAL is the portion of the coating sample that remains after the coating sample is heated to 110oC for one hour.

(13) PRIMERS are coatings applied to a surface to provide a firm bond between the substrate and subsequent coats.

(14) PROPELLANT is a fluid under pressure which expels the contents of a container when a valve is opened.

(15) REPAIR AND MAINTENANCE COATINGS are resin-bearing coatings in which the resin becomes pliable with the application of heat, such as vinyl, chlorinated rubber, or bituminous coatings.

(16) STAINS are coatings which are formulated to change the color of a surface but not conceal the surface.

(17) SPECIAL MARKING COATINGS are coatings used for items such as flight decks, ships' numbers, and other safety/identification applications.

(18) TOPCOATS are coatings which register gloss of 15 or greater on an 85o meter or five or greater on a 60o meter, and which are identified on the label as a gloss, semigloss, or eggshell enamel coating.

(19) TOUCH-UP COATINGS are coatings incidental to the main coating process but necessary to cover minor imperfections.

(20) VOLATILE ORGANIC COMPOUND (VOC) is any volatile compound which contains the element carbon, excluding methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, ammonium carbonate, and exempt compounds.

(c) Requirements

(1) After January 1, 1992, no person shall manufacture, supply, sell, offer for sale, blend, repackage, apply or solicit the application of any aerosol coating with a VOC content in excess of 2 grams of VOC per gram of coating solids.

(2) After January 1, 1996, no person shall manufacture, supply, sell, offer for sale, blend, repackage, apply, or solicit the application of any aerosol coating with a VOC content in excess of the following limits expressed as percent VOC by weight of coating:

Coating Type Percent VOC

Flats, Topcoats, 30

Street Marking Coatings

Primers, Stains 42

Repair and Maintenance, Metallics, 50

Touch Ups, Industrial Maintenance,

Multi-Color Coatings

Special Marking, High Temperature 60


Clear Coatings 65

Electrical Insulation Coatings 67

(3) If anywhere on the container of any coating listed in the Table of Standards, on any sticker or label affixed thereto, or in any sales or advertising literature, any representation is made that the coating may be used as, or is suitable for use as a coating for which a lower VOC standard is specified in the table, then the lowest VOC standard shall apply.

(4) Sale or application of a coating manufactured prior to January 1, 1992 and not complying with the requirements of this rule shall not constitute a violation of subparagraph (c)(1) until January 1, 1995.

(5) Prohibited Coating Solvents

After January 1, 1995, a person shall not sell, offer for sale, use, or apply any aerosol coating containing trifluoromethane (FC-23), trichlorotrifluoroethane (CFC-113), dichlorodifluoromethane (CFC-12), trichlorofluoromethane (CFC-11), dichlorotetrafluoroethane (CFC-114), and chloropentafluoroethane (CFC-115).

(6) Notwithstanding the requirements of subparagraph (c)(2), beginning January 1, 1996, any VOC limit set forth for a conventional coating that is equivalent to or more stringent than the VOC limit in subparagraph (c)(1) in any District coating rule shall apply equally to an aerosol coating used for the same application. VOC limits in grams of VOC per liter of coating less water and less exempt solvents may be converted to approximate the equivalent percent VOC by weight for aerosol coating application by using the following expression:

    Grams VOC    - water - exempt solvents

Liter of Coating

                 ____________________________________                                                   = percent VOC by weight of

840 aerosol coating

The expression shown is for coatings in 7 pounds per gallon weight range. For coatings of other densities, substitution of actual values will provide a more accurate estimate.

(d) Administrative Requirements

(1) Containers for all coatings subject to this rule shall display the date of manufacture of the contents or a code indicating the date of manufacture. The manufacturers of such coatings shall file with the Executive Officer of the District and the Executive Officer of the California Air Resources Board, an explanation of each code.

(2) Each container of any coating subject to this rule shall display the maximum VOC content of the coating as applied. VOC content shall be displayed as grams of VOC per gram of coating solids. VOC content displayed may be calculated using product formulation data, or may be determined using the test method in paragraph (f).

(e) Exemptions

The provisions of this rule shall not apply to aerosol coatings manufactured or sold in this District for shipment outside of this District or for shipment to other manufacturers for repackaging.

(f) Test Method

The VOC content of coatings subject to the provisions of this rule shall be determined by the procedures detailed in EPA Test Methods 24 - 24A and in Test Methods for Aerosol Coatings dated November 1, 1990 in the District's "Laboratory Methods of Analysis for Enforcement Samples" manual.