NR 466.25(11)(c)4.4. The organic HAP emitted during the month is less than the calculated allowable organic HAP as determined using sub. (12). NR 466.25(12)(12) Monthly allowable organic hap emissions. You shall use the procedures and calculations in this subsection for determining monthly allowable organic HAP emissions for use in demonstrating compliance in accordance with subs. (4), (8), (9) (a) 10. d., (9) (b) 11. d. and (11) (c) 4. You shall determine the amount of coating material applied at greater than or equal to 20% by mass coating solids and the amount of coating material applied at less than 20% by mass coating solids. The allowable organic HAP limit shall then be calculated based on coating material applied at greater than or equal to 20% by mass coating solids complying with 0.2 kg of organic HAP per kg of coating solids at an existing affected source or 0.08 kg of organic HAP per kg of coating solids at a new affected source, and coating material applied at less than 20% by mass coating solids complying with 4% by mass organic HAP at an existing affected source and 1.6% by mass organic HAP at a new affected source by doing all of the following: NR 466.25(12)(a)(a) Determine the as-purchased mass of each coating material applied each month. NR 466.25(12)(c)(c) Determine the as-purchased mass fraction of each coating material which was applied at 20% by mass or greater coating solids content on an as-applied basis. NR 466.25(12)(d)(d) Determine the total mass of each solvent, diluent, thinner or reducer added to coating materials which were applied at less than 20% by mass coating solids content on an as-applied basis each month. NR 466.25(12)(e)(e) Calculate the monthly allowable organic HAP emissions using Equation 13a for an existing affected source and Equation 13b for a new affected source: where:
Ha is the monthly allowable organic HAP emissions, kg
p is the number of different coating materials applied in a month
Mi is the mass of as-purchased coating material, i, applied in a month, kg
Gi is the mass fraction of each coating material, i, which was applied at 20% by mass or greater coating solids content, on an as-applied basis, kg/kg
Csi is the coating solids content of coating material, i, expressed as a mass fraction, kg/kg
q is the number of different materials added to the coating material
MLj is the mass of non-coating-solids-containing coating material, j, added to coating-solids-containing coating materials which were applied at less than 20% by mass coating solids content, on an as-applied basis, in a month, kg
where
Ha is the monthly allowable organic HAP emissions, kg
p is the number of different coating materials applied in a month
Mi is the mass of as-purchased coating material, i, applied in a month, kg
Gi is the mass fraction of each coating material, i, which was applied at 20% by mass or greater coating solids content, on an as-applied basis, kg/kg
Csi is the coating solids content of coating material, i, expressed as a mass fraction, kg/kg
q is the number of different materials added to the coating material
MLj is the mass of non-coating-solids-containing coating material, j, added to coating-solids-containing coating materials which were applied at less than 20% by mass coating solids content, on an as-applied basis, in a month, kg
NR 466.25 NoteNote: Sub. (13) was not used to maintain consistency with numbering used in parallel federal language.
NR 466.25(14)(14) Combinations of capture and control. If you operate more than one capture system, more than one control device, one or more never-controlled work stations or one or more intermittently-controlled work stations, you shall calculate organic HAP emissions according to the procedures in pars. (a) to (d) and use the calculation procedures specified in par. (e) to convert the monitoring and other data into units of the selected control option in subs. (5) to (8). Use the procedures specified in par. (f) to demonstrate compliance. NR 466.25(14)(a)(a) Solvent recovery system using liquid-liquid material balance compliance demonstration. If you choose to comply by means of a liquid-liquid material balance for each solvent recovery system used to control one or more web coating lines, you shall determine the organic HAP emissions for the web coating lines controlled by the solvent recovery system in accordance with one of the following: NR 466.25(14)(a)1.1. Subsection (9) (a) 1. to 3. and 5. to 7., if the web coating lines controlled by the solvent recovery system have only always-controlled work stations.