R 336.2040 Method for determination of volatile organic compound emissions from coating lines and graphic arts lines.

Rule 1040. (1) The methods described in this rule must be used for the determination of volatile organic compound emissions from coating lines and graphic arts lines for the purpose of determining compliance, during the specified averaging period, with an emission limit. For emission limits expressed as pounds of volatile organic compounds per gallon of coating, minus water, as applied. Concentrations of volatile organic compounds in coatings and inks must be determined by excluding water and compounds that are used as organic solvents and are excluded from the definition of volatile organic compound from both the volume of volatiles in the coatings and inks and the volume of the coatings and inks as applied. The emission limits can be contained in any of the following: (a) These rules. (b) A permit to install. (c) A permit to operate. (d) A voluntary agreement. (e) A performance contract. (f) A stipulation. (g) An order of the department. (2) Unless otherwise specified in these rules or in a legally enforceable permit, order, or contract as described in subrule (1) of this rule, for a particular coating line or graphic arts line, the applicable method for the determination of volatile organic emissions from coating lines and graphic arts lines is based on the form of the specified emission limit as follows: (a) For coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating, minus water, as applied, use the method described in subrule (12)(a) of this rule. (b) For coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating, minus water, as applied, use the method described in subrule (12)(b) of this rule. (c) For coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating solids, as applied, use the method described in subrule (12)(c) of this rule. (d) For coating lines with 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating solids, as applied, use the method described in subrule (12)(d) of this rule. (e) For coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per gallon of applied coating solids, use the method described in subrule (12)(e) of this rule. (f) For coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per gallon of applied coating solids, use the method described in subrule (12)(f) of this rule. (g) For graphic arts lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per pound of solids, as applied, use the method described in subrule (12)(g) of this rule. (h) For graphic arts lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per pound of solids, as applied, use the method described in subrule (12)(h) of this rule. (i) For flatwood paneling coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per 1,000 square feet of coated finished product, use the method described in subrule (12)(i) of this rule. (j) For flatwood paneling coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per 1,000 square feet of coated finished product, use the method described in subrule (12)(j) of this rule. (3) The following nomenclature applies to the equations described in this rule: (a) a = An individual duct through which gases containing volatile organic compounds are ducted to an add-on emissions control device. (b) B = Modified emission limit, converted from pounds of volatile organic compounds per gallon of coating, minus water, as applied, to pounds of volatile organic compounds per gallon of coating solids as applied. (c) Cim = Concentration of volatile organic compounds, as measured by the applicable method, in the effluent gas flowing through stack "m" leaving the add-on emissions control device, parts per million by volume. (d) Cza = Concentration of volatile organic compounds, as measured by the applicable method, in the influent gas flowing through duct "a" entering the add-on emissions control device, parts per million by volume. (e) Dci = Density of each ink or coating "i" as received from the ink or coating supplier, pounds per gallon of ink or coating. (f) Dsj = Density of each volatile organic compound dilution solvent "j" added to the coating, pounds per gallon of solvent, minus water. (g) DE = Volatile organic compound destruction efficiency of the add-on emissions control device. (h) E = Emission limit expressed in pounds of volatile organic compounds per gallon of coating, minus water, as applied. (i) GT = Total volume of all coatings "z" used during the averaging period, gallons of coating, minus water, as applied. (j) i = An individual coating used during the averaging period that belongs to the coating category for which a compliance determination is being made pursuant to the provisions of this rule. For a graphic arts line, "i" is an individual ink or coating used during the averaging period. (k) j = An individual dilution solvent used during the averaging period that is used in conjunction with a coating "i". (l) k = An individual method of application of coating solids. (m) Lci = Volume of each coating "i" used during the averaging period, gallons of coating, minus water, as applied. (n) Ldi = Volume of each ink or coating "i" as received from the ink or coating supplier and used during the averaging period, gallons of ink or coating. (o) Lik = Volume of each coating "i" used by each application method "k" during the averaging period, gallons of coating, minus water, as applied. (p) Lsj = Volume of each volatile organic compound dilution solvent "j" added to the coating during the averaging period, gallons of solvent, minus water. (q) M = Total weight of volatile organic compounds in all coatings "z" used during the averaging period for a coating line or a graphic arts line, pounds. (r) m = An individual stack through which gases containing volatile organic compounds are ducted to the ambient air from an add-on emissions control device. (s) Mr = Total weight of volatile organic compounds recovered from a recovery-type add- on emissions control device during the averaging period, pounds. (t) N = Fraction, by weight, of the total volatile organic compounds emitted from an operation which is captured and enters the add-on emissions control device, pound per pound. (u) NTr = Fraction, by weight, of the total volatile organic compounds in all coatings "z" used during the averaging period for a coating line or a graphic arts line which is controlled by an add-on emissions control device "r," pound per pound. (v) P = For an individual coating "i," pounds of volatile organic compounds per gallon of coating, minus water, as applied. (w) Ps = For an individual coating "i," pounds of volatile organic compounds, minus water, as received from the ink or coating supplier. (x) Pa = As used in subrule (12)(a) of this rule for coating lines that do not have an add- on emissions control device, volume-weighted average pounds of volatile organic compounds per gallon of coating, minus water, as applied, for a single coating category during the averaging period. (y) Pb = As used in subrule (12)(b) of this rule for coating lines that have 1 or more add- on emissions control devices, volume-weighted average pounds of volatile organic compounds per gallon of coating, minus water, as applied, for a single coating category during the averaging period. (z) Pc = As used in subrule (12)(c) of this rule for coating lines that do not have an add- on emissions control device, volume-weighted average pounds of volatile organic compounds per gallon of coating solids, as applied, for a single coating category during the averaging period. (aa) Pd = As used in subrule (12)(d) of this rule for coating lines that have 1 or more add- on emissions control devices, volume-weighted average pounds of volatile organic compounds per gallon of coating solids, as applied, for a single coating category during the averaging period. (bb) Pe = As used in subrule (12)(e) of this rule for coating lines that do not have an add- on emissions control device, volume- weighted average pounds of volatile organic compounds per gallon of applied coating solids for a single coating category during the averaging period. (cc) Pf = As used in subrule (12)(f) of this rule for coating lines that have 1 or more add- on emissions control devices, volume-weighted average pounds of volatile organic compounds per gallon of applied coating solids for a single coating category during the averaging period. (dd) Pg = As used in subrule (12)(g) of this rule for graphic arts lines that do not have an add-on emissions control device, average pounds of volatile organic compounds per pound of solids, as applied, for all inks and coatings used during the averaging period. (ee) Ph = As used in subrule (12)(h) of this rule for graphic arts lines that have 1 or more add-on emissions control devices, average pounds of volatile organic compounds per pound of solids, as applied, for all inks and coatings used during the averaging period. (ff) Pi = As used in subrule (12)(i) of this rule for flatwood paneling coating lines that do not have an add-on emissions control devices, volume-weighted average pounds of volatile organic compounds per 1,000 square feet of coated finished product for a single-coating category during the averaging period. (gg) Pj = As used in subrule (12)(j) of this rule for flatwood paneling coating lines that have 1 or more add-on emissions control devices, volume-weighted average pounds of volatile organic compounds per 1,000 square feet of coated finished product for a single- coating category during the averaging period. (hh) Qim = Volumetric flow rate of the effluent gas flowing through stack "m" leaving the add-on emissions control device, dry standard cubic feet per hour. (ii) Qza = Volumetric flow rate of the influent gas flowing through duct "a" entering the add-on emissions control device, dry standard cubic feet per hour. (jj) Q3n = Volumetric flow rate of the effluent gas leaving an uncontrolled stack "n," dry standard cubic feet per hour. (kk) r = An individual add-on emissions control device. (ll) Rr = Reduction efficiency of a single add-on emissions control device. (mm) Rt = Overall reduction efficiency of all add-on emissions control devices used for a coating line or a graphic arts line. (nn) s =The total number of different add-on control devices "r" on a coating line or graphic arts line. (oo) sq = The total surface area of coated finished product for a single-coating category for a flatwood paneling coating line during the averaging period, square feet. (pp) T = Overall transfer efficiency for all coatings "i" for a single-coating category on a coating line for the averaging period. (qq) t = The total number of stacks "m" leaving an add-on emissions control device "r". (rr) Ti = Transfer efficiency for application of coating "i," %. (ss) u = Total number of ducts "a" entering an add-on emissions control device "r". (tt) Uci = For representative colors and parts that are tested for transfer efficiency, "Uci" is the volume of each representative color of coating that is applied to each representative part on a coating line during the averaging period. (uu) V = For a coating line, the volume of solids in all coatings used "zc" during the averaging period, gallons. (vv) Vci = Proportion of solids by volume in each coating "i," gallon of solids per gallon of coating, minus water, as applied. (ww) W = For a graphic arts line, the weight of solids in all inks and coatings used "zg" during the averaging period, pounds. (xx) Wci = Proportion of volatiles, volatile organic compounds, water, and exempt compounds, by weight in each ink or coating "i" as received from the ink or coating supplier, pound of volatiles per pound of coating. (yy) x = The total number of different application methods "k." (zz) y = The total number of different dilution solvents "j." (aaa) z = The total number of different coatings "i" used on a coating line or different number of inks and coatings "i" used on a graphic arts line during the averaging period. "z" is used generically in the equations specified in this rule for "zc" when the calculation is made for a coating line and for "zg" when the calculation is made for a graphic arts line. (bbb) zc = The total number of different coatings "i" in the same coating category used during the averaging period. (ccc) zg = The total number of different inks and coatings "i" used during the averaging period. (4) The following provisions apply to the calculations for a coating line or graphic arts line made pursuant to the methods described in this rule: (a) When carrying out calculations, carry not less than 5 significant digits in intermediate calculations. Round off figures after the final calculation, rounding off calculated emission numbers to not less than 2, but not more than 3, significant figures. (b) The calculations for a coating line must include all of the coatings which are in the same coating category and which are used during the averaging period as specified in the applicable emission limit. (c) Except as specified in R 336.1624(5)(d), the calculations for a graphic arts line must include all of the inks and coatings that are used during the averaging period as specified in the applicable emission limit. (5) The volatile organic compound content of an ink or coating, minus water, as applied, "P," must be determined using any of the following methods: (a) The volatile organic compound content of an ink or coating, minus water, as applied, "P," must be determined according to all of the following provisions: (i) The volatile organic compound content, minus water, as applied, must be determined as follows: (A) For a coating used on a coating line or a coating used on a graphic arts line, the volatile organic compound content, minus water, as applied, must be determined using federal reference method 24 or federal reference method 24A, as applicable to the coating, as described in R 336.2004, or an alternate method approved by the department. (B) For an ink that is used on a graphic arts line, the volatile organic compound content, minus water, as applied, must be determined using federal reference method 24 or federal reference method 24A, as applicable, as described in R 336.2004. (ii) The ink or coating sample must be taken at a point where the sample will be representative of the ink or coating material as applied. (iii) The sample must be stored in an enclosed container that is not less than 1 pint in volume. (iv) By using a procedure that is acceptable to the department, the amount of any compound in the sample that is excluded from the definition of volatile organic compound may be quantified and subtracted from the total amount of volatiles in the sample as determined by federal reference method 24, federal reference method 24A, or an alternate method that is approved by the department. In this case, the volume of any excluded compound in the sample must also be subtracted from the volume of the ink or coating sample. (b) Upon written approval by the department, the volatile organic compound content of an ink or coating may be determined from formulation data, which includes batch composition information from the ink or coating manufacturer and the amount of volatile organic compound dilution solvent added to the ink or coating before application. In this case, "P" must be calculated using the following equation: di sj sj di sj Ps + L L D P = + L L (c) If a coating or ink is tested by a federal reference method 24 or 24A analysis or by an alternate method approved by the department and the results are different than calculated through formulation data review, then the test method results must be used for determining compliance with the emission limit. (6) The weight of volatile organic compounds that are used during the averaging period must be calculated using the following equation, where "z" is the total number of coatings used: z ci i=1 M = P L  (7) The total volume of coating solids that are used during the averaging period must be calculated using the following equation, where "z" is the total number of coatings used: z ci ci i=1 V = V L  (8) The total weight of ink and coating solids that are used during the averaging period must be calculated using the following equation, where "zg" is the total number of inks and coatings used during the averaging period: zg di ci ci i=1 W = (1- ) W L D  (9) The transfer efficiency must be determined by the following method, if approved by the department, or by an alternate method approved by the department: (a) A person that is responsible for the transfer efficiency test shall identify all of the following in a coating operation transfer efficiency test proposal and submit the proposal to the department for approval not less than 30 days before the transfer efficiency test: (i) All processing sequences. A processing sequence is the combination and order of paint booths, flash-off areas, ovens, and application equipment necessary to apply a coating. (ii) The coating categories used on each processing sequence. (iii) The representative coating color in each coating category. A representative color must be determined based on the volume of coating used in relation to the total volume of coating category coatings used and any other parameters acceptable to the department. If it is believed by the department that the transfer efficiency of the various coatings within the same coating category would be different as a result of different coating technologies, such as for metallic topcoat coatings and nonmetallic topcoat coatings, 2 or more representative coating colors may be required by the department to be tested. (iv) At a minimum, 2 different representative parts coated in each processing sequence. A representative part must be determined based on the numbers of the part coated in relation to the total number of parts coated, the configuration of the part, and any other parameters acceptable to the department. (b) For the initial transfer efficiency tests, a person shall test, at a minimum, the representative color or colors in each coating category used on each representative part in each processing sequence. To more closely represent actual process conditions, coatings applied wet-on-wet, such as basecoat and clearcoat, may be tested together. Also, identical colors or clear coats on identical parts in identical processing sequences need not be tested. (c) A person that is responsible for the transfer efficiency test shall review the operating conditions annually after the initial transfer efficiency tests and demonstrate, to the satisfaction of the department, that significant changes have not occurred in coating technology, the parts coated, or the processing sequence. The most recent test results remain valid for 5 years if the person demonstrates that significant change has not occurred. Significant product, processing, material, or application equipment changes necessitate retesting of the transfer efficiency of the operations that have been modified. The retesting must be done as soon as practicable, but not more than 180 days after the start-up and stabilization of the new product, process, material, or application equipment. New transfer efficiency values determined by the retest must be used retroactively to the start-up of the new product, process, material, or application equipment. (d) Retests on a coating line may be limited to a representative coating on not less than 2 representative parts in a representative processing sequence, as approved by the department. A representative processing sequence must be determined based on coating usage, application equipment, and any other parameters acceptable to the department. (e) The area in the facility to be used for part weighing must be selected so as to provide for an area that has relatively constant temperature and minimal air movement. (f) Except as allowed pursuant to the provisions of subdivision (b) of this subrule, the coating being tested must be the only coating applied during the transfer efficiency test. If the part is weighed, weight loss from all other materials must be accounted for in the initial test weight. (g) A minimum of 10 parts per transfer efficiency test must be weighed to determine the weight of the solids applied. The average weight gain for the 10 parts tested must be used as the part weight gain for that transfer efficiency test. All transfer efficiency tests for a processing sequence must be completed within a 36-hour period. (h) Each part to be painted must be identified and preweighed to the nearest 0.05 pound. (i) The selected paint material at each paint system or paint pot dedicated for the transfer efficiency test must be isolated. (j) The amount of material used during the transfer efficiency test must be determined by either of the following measurement procedures: (i) The weight measurement procedure as follows: (A) Weigh the tank of reduced paint, to the nearest 0.01 pound, after all supply and return lines have been filled. (B) Connect the paint tank to the system and paint the test parts. (C) Reweigh the tank to the nearest 0.01 pound. (D) Determine the weight of paint material used by subtracting the final weight of the tank from the initial weight of the tank. (E) Obtain paint samples for weight solids determination. (F) Do both the initial and final weighings of the paint tank with the tank pressurized or with the tank not pressurized. (ii) A volume measurement procedure that is acceptable to the department. (k) Each painted test part must be reweighed to the nearest 0.01 pound after paint has cured and cooled. (l) The weight of the solids in the paint samples must be determined using ASTM-D2369, adopted by reference in R 336.1902. (m) The coating density in pounds per gallon must be determined using ASTM-D1475, adopted by reference in R 336.1902. (n) The following equation must be used to calculate the transfer efficiency for the application of coating "i": Ti = 𝑇𝑜𝑡𝑎𝑙 𝑤𝑒𝑖𝑔ℎ𝑡 𝑔𝑎𝑖𝑛 𝑜𝑓 𝑝𝑎𝑟𝑡𝑠 𝑡𝑒𝑠𝑡𝑒𝑑 (𝑡𝑜𝑡𝑎𝑙 𝑤𝑒𝑖𝑔ℎ𝑡 𝑜𝑓 𝑐𝑜𝑎𝑡𝑖𝑛𝑔 𝑢𝑠𝑒𝑑 𝑝𝑒𝑟 𝑡𝑒𝑠𝑡)𝑥 (𝑤𝑒𝑖𝑔ℎ𝑡 𝑓𝑟𝑎𝑐𝑡𝑖𝑜𝑛 𝑠𝑜𝑙𝑖𝑑𝑠) (o) Where more than 1 part type or coating are tested on a coating line for a single coating category, the overall transfer efficiency "T" for the coating category must be determined by averaging the individual transfer efficiency values based on a volume-weighted average of coatings applied during the averaging period for each different color and part type tested. This overall transfer efficiency must be calculated by using the following equation, where "aa" is the number of coatings tested and "bb" is the number of part types tested: aa bb ci ci i=1 c=1 aa bb ci i-1 c=1 U T T = U   (p) Baseline operating parameters of the paint application equipment and the paint booths must be established for each transfer efficiency test and must serve as a basis for determining compliance. These parameters must be included in a transfer efficiency test report and must include all of the following information: (i) Type of spray equipment. (ii) Electrostatic voltage. (iii) Size and geometry of the part coated. (iv) Gun-to-target distance, nonmanual. (v) Number of parts per conveyor hook. (vi) Air velocity in spray booth, linear feet per minute. (vii) Fluid flow settings, by color. (viii) Bell revolutions per minute for minibells. (ix) Atomizing air pressure. (10) The capture efficiency "N" must be determined as follows: (a) The capture efficiency "N" must be determined by using the methods specified in 40 CFR 52.741(a)(4)(iii) entitled "Capture system efficiency test protocols" and in appendix B entitled "VOM Measurement Techniques for Capture Efficiency," with the following modifications: (i) The general modifications are as follows: (A) Replace the requirements under 40 CFR 52.741(a)(4)(iii)(A) (2) with the following requirements: If a source owner or operator uses a control device designed to collect and recover volatile organic compounds, for example, carbon adsorber, an explicit measurement of capture efficiency is not necessary if the conditions described in 40 CFR 52.741(a)(4)(iii) are met. The overall emission reduction efficiency of the control system must be determined each day by directly comparing the input liquid volatile organic compounds to the recovered liquidvolatile organic compounds. The procedure for use in this situation is given in 40 CFR 60.433, with the modification to 40 CFR 52.741(a)(4)(iii)(A)(2)(i) under paragraph (B) of this rule. (B) Replace the requirements under 40 CFR 52.741(a)(4)(iii)(A)(2)(i) with the following requirements: The source owner or operator shall obtain data each day for the solvent usage and solvent recovery and determine the solvent recovery efficiency of the system each day using a 7-day rolling period. The recovery efficiency for each day is computed as the ratio of the total recovered solvent for that day and the prior 6 consecutive operating days to the total solvent usage for the same 7-day period weighted average as given in 40 CFR §60.433. This ratio must be expressed as a percentage. The ratio must be computed within 72 hours after each 24-hour period. With the approval of the administrator, a source that believes that the 7-day rolling period is not appropriate may use an alternative multi-day rolling period of not more than 30 days. (C) Requirements in 40 CFR 52.741 appendix Bfor procedures G.1, G.2, F.2, F.1, and L, sections titled “1.4 Sampling requirements” must be replaced with the following: A capture efficiency test must consist of not less than 3 sampling runs. Each run must cover at least 1 complete production cycle, but must be not less than 3 hours long. The sampling time for each run need not be more than 8 hours, even if the production cycle has not been completed. Alternative sampling times may be used if approved by the administrator. (ii) Owners or operators of coating lines that have multiple stacks may choose to apply 1 of the 4 protocols under 40 CFR 52.741(a)(4)(iii)(B) or the protocol described under subparagraph (A) of this paragraph, in addition to the modifications listed in paragraph (i) of this subdivision except for the modification to 1.4 listed in paragraph (i)(C)(1) of this subdivision, which is replaced with the following language as described under subparagraph (B) of this paragraph: (A) Liquid/gas method measuring the captured emission, Gw, and liquid input, L. This procedure may only be used when the capture efficiency for a coating line is expected to be less than 50%. The capture efficiency equation to be used for this protocol is: CE = Gw/L Where: CE = Coating line capture efficiency, decimal fraction. Gw = Mass of vom captured and delivered to a control device. L = Mass of liquid vom input to coating line. Procedure G.1 contained in appendix B of this section is used to obtain Gw. Procedure L contained in appendix B or the alternate method in R 336.2007 must be used to determine L. (B) Requirements in 40 CFR 52.741 appendix B for procedures G.1, G.2, F.2, F.1, and L, under the procedure section titled “1.4 Sampling requirements” must be replaced with the following requirements: A capture efficiency test must consist of not less than 3 sampling runs. Each run must cover at least 1 complete production or processing cycle or must be at least 1 hour in duration. For automotive surface coating operations, the sampling time per test must be based on coating a minimum of 3 representative vehicles. (b) The test protocols and 40 CFR 52.741(a)(4)(iii) appendix B are adopted by reference under R 336.1902. (c) Where multiple capture systems are used on a coating line or a graphic arts line, the appropriate capture efficiency for each application method must be determined and the overall capture efficiency for the coating line must be based on a mass-weighted average of all volatile organic compounds used on the coating line or the graphic arts line during the averaging period. (11) The overall reduction efficiency of add-on emissions control devices must be determined using 1 or more of the following methods, as applicable: (a) When a destructive-type add-on emissions control device is used, the reduction efficiency for the add-on emissions control device must be determined by using the following method: (i) The destruction efficiency of the add-on emissions control device is calculated by using the following equation, where "u" is the total number of ducts entering the control device and "t" is the total number of stacks leaving the control device: u t za im za im a=1 m=1 u za za a=1 - Q Q C C DE = Q C    (ii) Using the destruction efficiency as determined in paragraph (i) of this subdivision, the reduction efficiency of the add-on emissions control device is calculated by using the following equation: r = (DE) N R (iii) If there is only 1 add-on emissions control device used on a coating line or graphic arts line, use the value calculated for "Rr" pursuant to paragraph (ii) of this subdivision as the value for RT in subsequent calculations. (iv) The concentration of volatile organic compound emissions entering and exiting the add-on emissions control device must be determined by using federal reference methods 25 or 25A, federal reference method 18 if approved by the department, the alternate version of federal reference method 25 incorporating the Byron analysis, as described in R 336.2004, or an alternate method that is acceptable to the department. federal reference methods as described in R 336.2004, must be used as applicable for the determination of the volumetric flow rate in the effluent gas. (b) When an add-on emissions control device is used that recovers volatile organic compounds, the reduction efficiency of the device must be determined by using 1 of the following methods: (i) A mass balance of the products used and the products recovered, using the following equation: r r M = R M (ii) An alternate method that is acceptable to the department. (iii) If there is only 1 add-on emissions control device used on a coating line or a graphic arts line, use the value calculated for "Rr" pursuant to paragraph (i) or (ii) of this subdivision as the value for RT in subsequent calculations. (c) If there is more than 1 add-on emissions control device used on a coating line or a graphic arts line, calculate the overall reduction efficiency by using the following equation: s T r r r=1 = ( ) NT R R  (12) Compliance with the specified emission limit must be determined using 1 of the following methods, as applicable, based on the form of the emission limit: (a) For coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating, minus water, as applied, use either of the following methods: (i) If only 1 coating is used on the coating line during the averaging time, use the following method: (A) Determine the volatile organic compound content of the coating, minus water, as applied, "P," by using the method described in subrule (5) of this rule. (B) If "P" is less than or equal to the specified emission limit, the coating line meets the emission limit. (ii) If more than 1 coating of the same coating category is used on the coating line during the averaging period, use the following method: (A) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (B) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (C) Determine the total volume of coatings used on the coating line during the averaging period "GT" using the following equation: z ci T i=1 = G L  (D) Determine the volume-weighted average weight of volatile organic compounds per gallon, minus water, as applied, by using the following equation: a T M = P G (E) If "Pa" is less than or equal to the specified emission limit, the coating line meets the emission limit. (b) For coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating, minus water, as applied, use the following method: (i) Convert the specified emission limit to a modified emission limit "B" expressed in pounds of volatile organic compounds per gallon of coating solids, as applied, by using the following equation: E B = E 1 - 7.36 (ii) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (iii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iv) Determine the total volume of coating solids used during the averaging period "V" by using the method described in subrule (7) of this rule. (v) Determine the overall capture efficiency "N" by using the method described in subrule (10) of this rule. (vi) Determine the overall reduction efficiency "RT" by using the method described in subrule (11) of this rule. (vii) Determine the volume-weighted average weight of volatile organic compounds per gallon of coating solids, as applied, "Pb," by using the following equation: b T M = (1- ) P R V (viii) If "Pb" is less than or equal to the modified limit "B," the coating line meets the emission limit. (c) For coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating solids, as applied, use the following method: (i) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the total volume of coating solids used during the averaging period "V" by using the method described in subrule (7) of this rule. (iv) Determine the volume-weighted average weight of volatile organic compounds per gallon of coating solids, as applied, "Pc," by using the following equation: c M = P V (v) If "Pc" is less than or equal to the specified limit, the coating line meets the emission limit. (d) For coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per gallon of coating solids, as applied, use the following method: (i) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the total volume of coating solids used during the averaging period "V" by using the method described in subrule (7) of this rule. (iv) Determine the overall capture efficiency "N" by using the method described in subrule (10) of this rule. (v) Determine the overall reduction efficiency "RT" by using the method described in subrule (11) of this rule. (vi) Determine the volume-weighted average weight of volatile organic compounds per gallon of coating solids, as applied, "Pd," by using the following equation: d T M = (1- ) P R V (vii) If "Pd" is less than or equal to the specified limit, the coating line meets the emission limit. (e) For coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per gallon of applied coating solids, use the following method: (i) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the total volume of coating solids used during the averaging period "V" by using the method described in subrule (7) of this rule. (iv) Determine the overall transfer efficiency "T" by using the method described in subrule (9) of this rule. (v) Determine the volume-weighted average weight of volatile organic compounds per gallon of applied coating solids "Pe" by using the following equation: e M = P (T) V 100 (vi) If "Pe" is less than or equal to the specified limit, the coating line meets the emission limit. (f) For coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per gallon of applied coating solids, use the following method: (i) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the total volume of coating solids used during the averaging period "V" by using the method described in subrule (7) of this rule. (iv) Determine the overall transfer efficiency "T" by using the method described in subrule (9) of this rule. (v) Determine the overall capture efficiency "N" by using the method described in subrule (10) of this rule. (vi) Determine the overall reduction efficiency "RT" by using the method described in subrule (11) of this rule. (vii) Determine the volume-weighted average weight of volatile organic compounds per gallon of applied coating solids "Pf" by using the following equation: f T M = (1- ) P R (T) V 100 (viii) If "Pf" is less than or equal to the specified limit, the coating line meets the emission limit. (g) For graphic arts lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compounds per pound of solids, as applied, use the following method: (i) Determine the volatile organic compound content of each ink and coating, minus water, as applied, "P," used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the weight of ink and coating solids used during the averaging period "W" by using the method described in subrule (8) of this rule. (iv) Determine the average pounds of volatile organic compound per pound of solids, as applied, "Pg," by using the following equation: g M = P W (v) If "Pg" is less than or equal to the specified limit, the graphic arts line meets the emission limit. (h) For graphic arts lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per pound of solids, as applied, use the following method: (i) Determine the volatile organic compound content of each ink and coating, minus water, as applied, "P," used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the weight of ink and coating solids used during the averaging period "W" by using the method described in subrule (8) of this rule. (iv) Determine the overall capture efficiency "N" by using the method described in subrule (10) of this rule. (v) Determine the overall reduction efficiency "Rt" by using the method described in subrule (11) of this rule. (vi) Determine the average pounds of volatile organic compound per pound of solids, as applied, "Ph," by using the following equation: h T M = (1- ) P R W (vii) If "Ph" is less than or equal to the specified limit, the graphic arts line meets the emission limit. (i) For flatwood paneling coating lines that do not have an add-on emissions control device for which emission limits are expressed in pounds of volatile organic compound per 1,000 square feet of coated finished product, use the following method: (i) Determine the volatile organic compound content of each coating, minus water, as applied that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the total surface area of coated finished product for the coating category during the averaging period "sq". (iv) Determine the volume-weighted average pounds of volatile organic compounds per 1,000 square feet of coated finished product "Pi" by using the following equation: i M sq = P 1,000 Where the units for the term 1,000 are square feet. (v) If "Pi" is less than or equal to the specified limit, the coating line meets the emission limit. (j) For flatwood paneling coating lines that have 1 or more add-on emissions control devices for which emission limits are expressed in pounds of volatile organic compounds per 1,000 square feet of coated finished product, use the following method: (i) Determine the volatile organic compound content of each coating, minus water, as applied, that belongs to the same coating category "P" used during the averaging period by using the method described in subrule (5) of this rule. (ii) Determine the weight of volatile organic compounds used during the specified averaging period "M" by using the method described in subrule (6) of this rule. (iii) Determine the total surface area of coated finished product for the coating category during the averaging period "sq". (iv) Determine the overall capture efficiency "N" by using the method described in subrule (10) of this rule. (v) Determine the overall reduction efficiency "RT" by using the method described in subrule (11) of this rule. (vi) Determine the volume-weighted average pounds of volatile organic compounds per 1,000 square feet of coated finished product "Pj" by using the following equation: j T M sq = (1- ) P R 1,000 Where the units for the term 1,000 are square feet. (vii) If "Pj" is less than or equal to the specified limit, the coating line meets the emission limit.