NR 440.58(2)(b)24.24. Wo is the proportion of VOCs in each coating, as received (fraction by weight). NR 440.58(3)(a)(a) On and after the date on which s. NR 440.08 requires a performance test to be completed, each owner or operator subject to this section may not cause to be discharged into the atmosphere more than: NR 440.58(3)(a)1.1. 0.28 kilogram VOC per liter (kg VOC/l) of coating solids applied for each calendar month for each affected facility that does not use an emission control device; or NR 440.58(3)(a)2.2. 0.14 kg VOC/l of coating solids applied for each calendar month for each affected facility that continuously uses an emission control device operated at the most recently demonstrated overall efficiency; or NR 440.58(3)(a)3.3. 10% of the VOCs applied for each calendar month (90% emission reduction) for each affected facility that continuously uses an emission control device operated at the most recently demonstrated overall efficiency; or NR 440.58(3)(a)4.4. A value between 0.14 (or a 90% emission reduction) and 0.28 kg/VOC/l of coating solids applied for each calendar month for each affected facility that intermittently uses an emission control device operated at the most recently demonstrated overall efficiency. NR 440.58(4)(b)(b) The owner or operator of an affected facility shall conduct an initial performance test as required under s. NR 440.08 (1) and thereafter a performance test for each calendar month for each affected facility according to the procedures in this subsection. NR 440.58(4)(c)(c) The owner or operator shall use the following procedures for determining monthly volume-weighted average emissions of VOCs in kg/l of coating solids applied. NR 440.58(4)(c)1.1. An owner or operator shall use the following procedures for each affected facility that does not use a capture system and control device to comply with the emission limit specified under sub. (3) (a) 1. The owner or operator shall determine the composition of the coatings by formulation data supplied by the manufacturer of the coating or by an analysis of each coating, as received, using Method 24 of 40 CFR part 60, Appendix A, incorporated by reference in s. NR 440.17 (1). The department may require the owner or operator who uses formulation data supplied by the manufacturer of the coatings to determine the VOC content of coatings using Method 24 or an equivalent or alternative method. The owner or operator shall determine the volume of coating and the mass of VOC solvent added to coatings from company records on a monthly basis. If a common coating distribution system serves more than one affected facility or serves both affected and existing facilities, the owner or operator shall estimate the volume of coating used at each affected facility by using the average dry weight of coating and the surface area coated by each affected and existing facility or by other procedures acceptable to the department. NR 440.58(4)(c)1.a.a. Calculate the volume-weighted average of the total mass of VOCs consumed per unit volume of coating solids applied during each calendar month for each affected facility, except as provided under subd. 1. d. The weighted average of the total mass of VOCs used per unit volume of coating solids applied each calendar month shall be determined by the following procedures. 1) Calculate the mass of VOCs used (Mo+ Md) during each calendar month for each affected facility by the following equation: (∑ Ldj Ddj will be zero if no VOC solvent is added to the coatings, as received.)
where:
n is the number of different coatings used during the calendar month
m is the number of different VOC solvents added to coatings used during the calendar month
2) Calculate the total volume of coating solids used (Ls) in each calendar month for each affected facility by the following equation: where:
n is the number of different coatings used during the calendar month
3) Calculate the volume-weighted average mass of VOCs used per unit volume of coating solids applied (G) during the calendar month for each affected facility by the following equation: NR 440.58(4)(c)1.b.b. Calculate the volume-weighted average of VOC emissions to the atmosphere (N) during the calendar month for each affected facility by the following equation: N=G
NR 440.58(4)(c)1.c.c. Where the volume-weighted average mass of VOCs discharged to the atmosphere per unit volume of coating solids applied (N) is equal to or less than 0.28 kg/l, the affected facility is in compliance. NR 440.58(4)(c)1.d.d. If each individual coating used by an affected facility has a VOC content, as received, that is equal to or less than 0.28 kg/l of coating solids, the affected facility is in compliance provided no VOCs are added to the coatings during distribution or application. NR 440.58(4)(c)2.2. An owner or operator shall use the following procedures for each affected facility that continuously uses a capture system and a control device that destroys VOCs (e.g., incinerator) to comply with the emission limit specified under sub. (3) (a) 2. or 3. NR 440.58(4)(c)2.a.a. Determine the overall reduction efficiency (R) for the capture system and control device. For the initial performance test, the overall reduction efficiency (R) shall be determined as prescribed in this subparagraph. In subsequent months, the owner or operator may use the most recently determined overall reduction efficiency (R) for the performance test, providing control device and capture system operating conditions have not changed. The procedure in this paragraph shall be repeated when requested by the department or when the owner or operator elects to operate the control device or capture system at conditions different from the initial performance test. 1) Determine the fraction (F) of total VOCs emitted by an affected facility that enters the control device using the following equation: