El Dorado County AQMD Rule 215
25 August May 21,
Section 215.5.PPP or 215.5.RRR, the reference method is U.S. EPA Method 24, except as provided in
Sections 215.9.C and 215.9.D. An alternative method to determine the VOC content of coatings is
SCAQMD Method 304-91 (Revised 1996). The exempt compounds content shall be determined by
SCAQMD Method 303-91 (Revised 1993), BAAQMD Method 43 (Revised 1996), or BAAQMD
Method 41 (Revised 1995). 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 215.9.C, formulation data, or any other
reasonable means for predicting that the coating has been formulated as intended (e.g., quality assurance,
checks, recordkeeping). If there are any inconsistencies between the results of a Method 24 test and any
other means for determining VOC content, the Method 24 test results will govern, except when an
alternative method is approved as specified in Section 215.9.C. The APCO may require the manufacturer
to conduct a Method 24 analysis.
C. ALTERNATIVE TEST METHODS: Other test methods may also be used if demonstrated to provide
results that are acceptable for purposes of determining compliance with Section 215.9.B and after review
and approval by the staff of the District, the CARB, and the U.S. EPA.
D. METHACRYLATE TRAFFIC MARKING COATINGS: Analysis of methacrylate multicomponent
coatings used as traffic marking coatings shall be conducted according to a modification of U.S. EPA
Method 24 (40 CFR 59, subpart D, Appendix A), incorporated by reference in subsection 215.9.E.10.
This method has not been approved for methacrylate multicomponent coatings used for purposes other
than as traffic marking coatings or for other classes of multicomponent 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. FIRE RESISTANCE RATING: ASTM E 119-18ce, “Standard Test Methods for Fire Tests
of Building Construction and Materials.”
2. GLOSS DETERMINATION: ASTM D 523-14 (2018), “Standard Test Method for Specular
Gloss.”
3. METAL CONTENT: SCAQMD Method 318-95, “Determination of Weight Percent
Elemental Metal in Coatings by X-Ray Diffraction,” SCAQMD Laboratory Methods of
Analysis for Enforcement Samples.
4. ACID CONTENT: ASTM D 1613-17, “Standard Test Method for Acidity in Volatile Solvents
and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products.”
5. EXEMPT COMPOUNDS--SILOXANES: Exempt compounds that are cyclic, branched, or
linear completely methylated siloxanes shall be analyzed as exempt compounds for compliance
with Section 601 by BAAQMD Method 43, “Determination of Volatile Methylsiloxanes in
Solvent-Based Coatings, Inks, and Related Materials,” BAAQMD Manual of Procedures,
Volume III, adopted 11/6/1996.
6. EXEMPT COMPOUNDS--PARACHLOROBENZOTRIFLUORIDE (PCBTF):
BAAQMD Method 41, “Determination of Volatile Organic Compounds in Solvent Based Coatings
and Related Materials Containing Parachlorobenzotrifluoride,” BAAQMD Manual of Procedures,
Volume III, adopted 12/20/1995.
7. EXEMPT COMPOUNDS: Under U.S. EPA Method 24: SCAQMD Method 303-91 (Revised
1996), “Determination of Exempt Compounds,” SCAQMD Laboratory Methods of Analysis
for Enforcement Samples.
8. VOC CONTENT OF COATINGS: U.S. EPA Method 24 as it exists in appendix A of 40
Code of Federal Regulations (CFR) part 60, “Determination of Volatile Matter Content, Water
Content, Density, Volume Solids, and Weight Solids of Surface Coatings.”
9. ALTERNATIVE VOC CONTENT OF COATINGS: Either U.S. EPA Method 24 or
SCAQMD Method 304-91 (Revised 1996), “Determination of Volatile Organic Compounds
(VOC) in Various Materials,” SCAQMD Laboratory Methods of Analysis for Enforcement
Samples.
10. METHACRYLATE MULTICOMPONENT TRAFFIC MARKING COATINGS: 40
CFR part 59, subpart D, appendix A, “Determination of Volatile Matter Content of
Methacrylate Multicomponent Coatings Used as Traffic Marking Coatings.”