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 =
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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).
