Current through Register Vol. XLI, No. 50, December 13, 2024
Section 45-21-42 - Test Methods and Compliance Procedures: Determining the Volatile Organic Compound (VOC) Content of Coatings and Inks42.1. Sampling procedures shall follow the guidelines presented in: 42.1.1. ASTM D3925: Standard practice for sampling liquid paints and related pigment coatings; or42.1.2. ASTM E300: Standard practice for sampling industrial chemicals.42.2. The analytical methods specified below shall be used to determine the VOC content of each coating, as applied: 42.2.1. Method 24 of 40 CFR Part 60, Appendix A, shall be used in the determination of total volatile content, water content, and density of coatings. For the determination of total volatile content, all samples shall be oven-dried at 100°C for 1 hour.42.2.2. To determine the total volatile content, water content, and density of multi-component coatings, the following procedures shall be used in addition to Method 24 of 40 CFR Part 60, Appendix A.42.2.2.a. The components shall be mixed in a storage container in proportions the same as those in the coating, as applied. The mixing shall be accomplished by weighing the components in the proper proportion into a container which is closed between additions and during mixing. Approximately 100 ml of coating shall be prepared in a container just large enough to hold the mixture prior to withdrawing a sample.42.2.2.b. For determination of volatile content, a sample shall be withdrawn from the mixed coating, and then transferred to a dish where the sample shall stand for at least 1 hour, but no more than 24 hours prior to being oven dried at 110°C for 1 hour.42.2.2.c. For determination of the water content and density of multicomponent coatings, samples shall be taken from the same 100 ml mixture of coating and shall be analyzed by the appropriate ASTM method referenced in Method 24 of 40 CFR Part 60, Appendix A.42.2.3. Method 24A of 40 CFR Part 60, Appendix A, shall be used in the determination of total volatile content, water content, and density of any publication rotogravure printing ink and related coatings.42.2.4. The following ASTM method may be used as an additional procedure related to determining VOC: ASTM D4457-85 - Standard test method for determination of dichloromethane and 1,1,1, trichloroethane in paints and coatings by direct injection into a gas chromatograph (the procedure delineated above may be used to develop protocols for any compounds specifically exempted from the definition of VOC).42.3. Use of adaptations to test methods. -- Use of an adaptation to any of the analytical methods specified in subsection 42.2. may be approved by the Secretary and the U.S. EPA on a case-by case basis. An owner or operator shall submit sufficient documentation for the Secretary and the U.S. EPA to find that the analytical methods specified in subdivisions 42.2.1., 42.2.2., and 42.2.3. will yield inaccurate results and that the proposed adaptation is appropriate.42.4. Each sample collected for analysis shall meet the following criteria:42.4.1. Each sample shall be at least 1 pint taken into a 1-pint container at a location and time such that the sample will be representative of the coating or ink, as applied (i.e., the sample shall include any dilution solvent or VOC added during the manufacturing process);42.4.2. If a sample larger than 1 pint is obtained, the sample container shall be of a size such that the sample completely fills the container;42.4.3. The container shall be tightly sealed immediately after the sample is taken;42.4.4. Any solvent or other VOC added after the sample is taken shall be measured and accounted for in the calculations in subsection 42.3.; and42.4.5. For multiple-component coatings, separate samples of each component shall be obtained.42.5. Calculations for determining the VOC content of coatings and inks from data as determined by Method 24 or 24A of 40 CFR Part 60, Appendix A, shall follow the guidance provided in the following documents: 42.5.1. "A Guideline for Surface Coating Calculations", EPA-340/1-86-016; and42.5.2. "Procedures for Certifying Quantity of Volatile Organic Compounds Emitted by Paint, Ink and Other Coatings", (Revised June 1986) EPA-450/3-84-019.W. Va. Code R. § 45-21-42