A. Calculation of VOC content. For the purpose of determining compliance with section 4(C), the VOC content of a coating shall be determined by using the procedures described in sections 6(A)(1) and 6(A)(2), as appropriate. The VOC content of a tint base shall be determined without colorant that is added after the tint base is manufactured. (1) With the exception of low solids coatings, determine the VOC content in grams of VOC per liter of coating thinned to the manufacturer's maximum recommendation, excluding the volume of any water and exempt compounds. Determine the VOC content using the following equation: VOC Content = Click here to view Image
Where:
VOC Content = grams of VOC per liter of coating
Ws = weight of volatiles, in grams
Ww = weight of water, in grams
Wec = weight of exempt compounds, in grams
Vm = volume of coating, in liters
Vw = volume of water, in liters
Vec = volume of exempt compounds, in liters
(2) For low solids coatings, determine the VOC content in units of grams of VOC per liter of coating thinned to the manufacturer's maximum recommendation, including the volume of any water and exempt compounds. Determine the VOC content using the following equation:VOC Content (ls) = Click here to view Image
Where:
VOC Content (ls) = the VOC content of a low solids coating in grams per liter of coating
Ws = weight of volatiles, in grams
Ww = weight of water, in grams
Wec = weight of exempt compounds, in grams
Vm = volume of coating, in liters
B. VOC content of coatings. To determine the physical properties of a coating in order to perform the calculations in section 6(A), the reference method for VOC content is U.S. EPA Method 24 ( 40 CFR Part 60, Appendix A), incorporated by reference in section 6(E)(11), except as provided in section 6(C) and 6(D). An alternative method to determine the VOC content of coatings is SCAQMD Method 304-91 (Revised February 1996), incorporated by reference in section 6(E)(12). To determine the VOC content of a coating, the manufacturer may use U.S. EPA Method 24, or an alternative method, as provided in section 6(C), formulation data, or any other reasonable means for predicting that the coating has been formulated as intended (e.g. quality assurance checks, recordkeeping). However, if there are any inconsistencies between the results of a Method 24 test and any other means for determining VOC content, the Method 24 results will govern, except when an alternative method is approved as specified in section 6(C). The Department may require the manufacturer to conduct a Method 24 analysis.
Exempt compound content shall be determined by SCAQMD Method 303-91 (Revised August 1996), incorporated by reference in section 6(E)(10). The exempt compound parachlorobenzotrifluoride (PCBTF) shall be determined by BAAQMD Method 41, incorporated by reference in section 6(E)(9). Exempt compounds that are cyclic, branched, or linear, completely methylated siloxanes, shall be determined by BAAQMD Method 43, incorporated by reference in section 6(E)(8).
C. Alternative test methods. Other test methods demonstrated to provide results that are acceptable for the purposes of determining compliance with section 6(B), after review and approval in writing by the Department and EPA, also may be used.D. Methacrylate traffic coating markings. Analysis of methacrylate multi-component coatings used as traffic marking coatings shall be conducted according to a modification of U.S. EPA Method 24 ( 40 CFR Part 59, subpart D, Appendix A), incorporated by reference in section 6(E)(13). This method has not been approved for methacrylate multi-component coatings used for purposes other than as traffic marking coatings or for other classes of multi-component coatings.E. Test methods. The following test methods are incorporated by reference herein, and shall be used to test coatings subject to the provisions of this rule: (1) Flame spread index. The flame spread index of a fire-retardant coating shall be determined by the ASTM Designation E 84-99, "Standard Test Methods for Surface Burning Characteristics of Building Materials".(2) Fire-resistance rating. The fire-resistance rating of a fire-resistive coating shall be determined by ASTM Designation E 119-98, "Standard Test Methods for Fire Tests of Building Construction Materials".(3) Gloss determination. The gloss of a coating shall be determined by ASTM Designation D 523-89 (1999), "Standard Test Method for Specular Gloss" (see section 2, flat coating, non-flat coating, non-flat-high gloss coating, quick-dry enamel).(4) Metal content of coatings. The metallic content of a coating shall be determined by SCAQMD Method 318-95, "Determination of Weight Percent Elemental Metal in Coatings by X-Ray Diffraction", SCAQMD "Laboratory Methods of Analysis for Enforcement Samples" (see section 2, metallic pigmented coating.)(5) Acid content of coatings. The acid content of a coating shall be determined by ASTM Designation D 1613-96, "Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer and Related Products" (see section 2, pre-treatment wash primer).(6) Drying times. The set-to-touch and dry-to-recoat times of a coating shall be determined by ASTM Designation D 1640-95, "Standard Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature" (see section 2, quick-dry enamel and quick-dry primer, sealer and undercoater). The tack-free time of a quick-dry enamel coating shall be determined by the Mechanical Test Method of ASTM D 1640-95.(7) Surface chalkiness. The chalkiness of a surface shall be determined using ASTM Designation D 4214-98, "Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films" (see section 2, specialty primer, sealer and undercoater).(8) Exempt compounds-siloxanes. Exempt compounds that are cyclic, branched or linear, completely methylated siloxanes, shall be analyzed as exempt compounds for compliance with this section by BAAQMD Method 43, "Determination of Volatile Methylsiloxanes in Solvent-Based Coatings, Inks, and Related Materials", BAAQMD Manual of Procedures, Volume III, adopted November 6, 1996.(9) Exempt compounds-parachlorobenzotrifluoride (PCBTF). The exempt compound parachlorobenzotrifluoride shall be analyzed as an exempt compound for compliance with this section by BAAQMD Method 41, "Determination of Volatile Organic Compounds in Solvent-Based Coatings and Related Materials Containing Parachlorobenzotrifluoride", BAAQMD Manual of Procedures, Volume III, adopted December 20, 1995.(10) Exempt compounds. The content of compounds exempt under EPA Method 24 shall be analyzed by SCAQMD Method 303-91 (Revised 1993), "Determination of Exempt Compounds", found in SCAQMD "Laboratory Methods of Analysis for Enforcement Samples".(11) VOC content of coatings. The VOC content of a coating shall be determined by EPA Method 24 found in "Determination of Volatile Matter Content, Water Content, Density, Volume Solids, and Weight Solids of Surface Coatings.(12) Alternative VOC content of coatings. The VOC content of coatings may be analyzed by either EPA Reference Method 24 or SCAQMD Method 304-91 (Revised 1996), "Determination of Volatile Organic Compounds (VOC) in Various Materials, found in "SCAQMD Laboratory Methods of Analysis for Enforcement Samples".(13) Methacrylate traffic marking coatings. The VOC content of methacrylate multicomponent coatings used as traffic marking coatings shall be analyzed by the procedures in 40 CFR Part 59, Subpart D, Appendix A, "Determination of Volatile Matter Coatings", (September 11, 1998).06- 096 C.M.R. ch. 151, § 6