NR 440.72(4)(b)1.1. The owner or operator shall determine the composition of coatings by analysis of each coating, as received, using Method 24 of Appendix A, 40 CFR part 60, incorporated by reference in s. NR 440.17 (1), from data that have been determined by the coating manufacturer using Method 24, or by other methods approved by the administrator. NR 440.72(4)(b)2.2. The owner or operator shall determine the volume of coating and the mass of VOC used for dilution of coatings from company records during each nominal 1-month period. If a common coating distribution system serves more than one affected facility or serves both affected and nonaffected spray booths, the owner or operator shall estimate the volume of coatings used at each facility by using procedures approved by the department. NR 440.72(4)(b)2.a.a. The owner or operator shall calculate the volume-weighted average mass of VOCs in coatings emitted per unit volume of coating solids applied (N) at each coating operation (i.e., for each type of coating used, prime, color, texture, or touch-up) during each nominal 1-month period for each affected facility. Each 1-month calculation is considered a performance test. Except as provided in subd. 2. c., N will be determined by the following procedures: 1) Calculate the mass of VOCs used (Mo+ Md) for each coating operation during each nominal 1-month period for each affected facility by the following equation: where n is the number of coatings of each type used during each nominal 1-month period and m is the number of different diluent VOCs used during each nominal 1-month period. (∑Ldj Ddj will be 0 if no VOCs are added to the coatings, as received.)
2) Calculate the total volume of coating solids consumed (Ls) in each nominal 1-month period for each coating operation for each affected facility by the following equation: where n is the number of coatings of each type used during each nominal 1-month period.
3) Select the appropriate transfer efficiency (T) from Table 1 for each type of coating applications equipment used at each coating operation. If the owner or operator can demonstrate to the satisfaction of the administrator that transfer efficiencies other than those shown are appropriate, the administrator may approve their use on a case-by-case basis. Transfer efficiency values for application methods not listed below may be approved by the administrator on a case-by-case basis. An owner or operator shall submit sufficient data for the administrator to judge the validity of the transfer efficiency claims.
4) Where more than one application method is used within a single coating operation, the owner or operator shall determine the volume of each coating applied by each method through a means acceptable to the department and compute the volume-weighted average transfer efficiency by the following equation:
where n is the number of coatings of each type used and p is the number of application methods used
5) Calculate the volume-weighted average mass of VOCs emitted per unit volume of coating solids applied (N) during each nominal 1-month period for each coating operation for each affected facility by the following equation: (Tavg = T when only one type of coating operation occurs).
NR 440.72(4)(b)2.b.b. Where the volume-weighted average mass of VOCs emitted to the atmosphere per unit volume of coating solids applied (N) is less than or equal to 1.5 kilograms per liter for prime coats, is less than or equal to 1.5 kilograms per liter for color coats, is less than or equal to 2.3 kilograms per liter for texture coats, and is less than or equal to 2.3 kilograms per liter for touch-up coats, the affected facility is in compliance. NR 440.72(4)(b)2.c.c. If each individual coating used by an affected facility has a VOC content (kg VOC/l of solids), as received, which when divided by the lowest transfer efficiency at which the coating is applied for each coating operation results in a value equal to or less than 1.5 kilograms per liter for prime and color coats and equal to or less than 2.3 kilograms per liter for texture and touch-up coats, the affected facility is in compliance provided that no VOCs are added to the coatings during distribution or application. NR 440.72(4)(b)2.d.d. If an affected facility uses add-on controls to control VOC emissions and if the owner or operator can demonstrate to the administrator that the volume-weighted average mass of VOCs emitted to the atmosphere during each nominal 1-month period per unit volume of coating solids applied (N) is within each of the applicable limits expressed in subd. 2. b. because of this equipment, the affected facility is in compliance. In such cases, compliance will be determined by the administrator on a case-by-case basis. NR 440.72(5)(a)(a) The reporting requirements of s. NR 440.08 (1) apply only to the initial performance test. Each owner or operator subject to the provisions of this section shall include the following data in the report of the initial performance test required under s. NR 440.08 (1). NR 440.72(5)(a)1.1. Except as provided for in subd. 2., the volume-weighted average mass of VOCs emitted to the atmosphere per volume of applied coating solids (N) for the initial nominal 1-month period for each coating operation from each affected facility. NR 440.72(5)(a)2.2. For each affected facility where compliance is determined under the provisions of sub. (4) (b) 2. c., a list of the coatings used during the initial nominal 1-month period, the VOC content of each coating calculated from data determined using Method 24, of Appendix A, 40 CFR part 60, incorporated by reference in s. NR 440.17 (1), and the lowest transfer efficiency at which each coating is applied during the initial nominal 1-month period. NR 440.72(5)(b)(b) Following the initial report, each owner or operator shall: NR 440.72(5)(b)1.1. Report the volume-weighted average mass of VOCs per unit volume of coating solids applied for each coating operation for each affected facility during each nominal 1-month period in which the facility is not in compliance with the applicable emission limits specified in sub. (3). Reports of noncompliance shall be submitted on a quarterly basis, occurring every 3 months following the initial report; and NR 440.72(5)(b)2.2. Submit statements that each affected facility has been in compliance with the applicable emission limits specified in sub. (3) during each nominal 1-month period. Statements of compliance shall be submitted on a semiannual basis. NR 440.72(5)(c)(c) These reports shall be postmarked not later than 10 days after the end of the periods specified in par. (b). NR 440.72(5)(d)(d) Each owner or operator subject to the provisions of this section shall maintain at the source, for a period of at least 2 years, records of all data and calculations used to determine monthly VOC emissions from each coating operation for each affected facility as specified in s. NR 440.07 (5). NR 440.72(5)(e)(e) Reporting and recordkeeping requirements for facilities using add-on controls will be determined by the administrator on a case-by-case basis.