(1) Sampling procedures shall follow the guidelines presented in:
(a) ASTM D3925: Standard practice for sampling liquid paints and related pigment coatings; or
(b) ASTM E300: Standard practice for sampling industrial chemicals.
(2) The analytical methods and procedures specified as follow shall be used to determine VOC content:
(a) For coatings and for inks other than solvent - borne (solvent reducible) publication rotogravure inks (See Subparagraph (b) of this paragraph for explanation of solvent -borne (solvent reducible) publication rotogravure inks.):
1. Reference Method 24 shall be used in the determination of total volatile organic content, water content, and density.
2. To determine the total volatile organic content, water content, and density of multicomponent coatings, the following procedures shall be used in addition to Reference Method 24:
(i) 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. About 100 ml of coating shall be prepared in a container just large enough to hold the mixture prior to withdrawing a sample.
(ii) For determination of volatile content, a sample shall be withdrawn from the mixed coating, and then transferred to a dish where the sample shall stand for at least 1 hour, but no more than 24 hours prior to being oven dried.
(iii) 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 methods referenced in Reference Method 24.
(b) Reference Method 24A shall be used in the determination of total volatile organic compound (VOC) content and density of solvent - borne (solvent reducible) publication rotogravure inks. A solvent - borne publication rotogravure ink is an ink used in publication rotogravure printing, as defined in Paragraph .35(2) of this chapter, whose volatile portion consists essentially of VOC solvent with not more than five weight percent water, as applied to the gravure cylinder.
(c) The following ASTM method may be used as an additional procedure related to determining VOC:
1. 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).
(3) Use of an adaptation or alternative to any of the analytical methods and procedures specified in Paragraph (2) of this rule shall be approved by the Technical Secretary and the EPA on a case-by-case basis. An owner or operator shall submit sufficient documentation to verify that the analytical methods specified in Subparagraphs (2)(a), (2)(b), and (2)(c) will yield inaccurate results and that the proposed adaptation is appropriate, or that the proposed adaptation will yield results as accurate as will the specified analytical methods.
(4) Each sample collected for analysis shall meet the following criteria:
(a) 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);
(b) 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;
(c) The container shall be tightly sealed immediately after the sample is taken;
(d) Any solvent or other VOC added after the sample is taken shall be measured and accounted for in the calculations in Paragraph (3) of this rule; and
(e) For multiple-component coatings, separate samples of each component shall be obtained.
(5) Calculations for determining the VOC content of coatings and inks from data as determined by Reference Method 24 or 24A shall follow the guidance provided in the following documents:
(a) "A Guideline for Surface Coating Calculations" EPA-340/1-86-016; and
(b) "Procedures for Certifying Quantity of Volatile Organic Compounds Emitted by Paint, Ink and Other Coatings." (Revised June 1986) EPA-450/3-84-019.
(6) In lieu of determining VOC content by the methods and procedures specified in the other paragraphs of this rule, formulation data shall be used if approved by the EPA and the Technical Secretary.


Tenn. Comp. R. & Regs. 1200-03-18-.81
Original rule filed March 8, 1993 effective April 22, 1993. Amendment filed January 31, 1997; effective April 16, 1997.

Authority: T.C.A. ยงยง 4-5-202 et seq. and 68-201-105.

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