NR 440.48(2)(a)12. 12. “VOC content” means the proportion of a coating that is volatile organic compounds (VOCs), expressed as kilograms of VOCs per liter of coating solids.

NR 440.48(2)(a)13. 13. “VOC emissions” means the mass of volatile organic compounds (VOCs), expressed as kilograms of VOCs per liter of applied coating solids, emitted from a metal furniture surface coating operation.

NR 440.48(2)(b) (b) As used in this section, symbols not defined in this paragraph have the meanings given in s. NR 440.03.

NR 440.48(2)(b)1. 1. Ca is the VOC concentration in each gas stream leaving the control device and entering the atmosphere (parts per million by volume, as carbon).

NR 440.48(2)(b)2. 2. Cb is the VOC concentration in each gas stream entering the control device (parts per million by volume, as carbon).

NR 440.48(2)(b)3. 3. Cf is the VOC concentration in each gas stream emitted directly to the atmosphere (parts per million by volume, as carbon).

NR 440.48(2)(b)4. 4. Dc is the density of each coating, as received (kilograms per liter).

NR 440.48(2)(b)5. 5. Dd is the density of each diluent VOC solvent (kilograms per liter).

NR 440.48(2)(b)6. 6. Dr is the density of VOC solvent recovered by an emission control device (kilograms per liter).

NR 440.48(2)(b)7. 7. E is the VOC destruction efficiency of the control device (fraction).

NR 440.48(2)(b)8. 8. F is the proportion of total VOCs emitted by an affected facility that enters the control device (fraction).

NR 440.48(2)(b)9. 9. G is the volume-weighted average mass of VOCs in coatings consumed in a calendar month per unit volume of coating solids applied (kilograms per liter).

NR 440.48(2)(b)10. 10. Lc is the volume of each coating consumed, as received (liters).

NR 440.48(2)(b)11. 11. Ld is the volume of each diluent VOC solvent added to coatings (liters).

NR 440.48(2)(b)12. 12. Lr is the volume of VOC solvent recovered by an emission control device (liters).

NR 440.48(2)(b)13. 13. Ls is the volume of coating solids consumed (liters).

NR 440.48(2)(b)14. 14. Md is the mass of diluent VOC solvent consumed (kilograms).

NR 440.48(2)(b)15. 15. Mo is the mass of VOCs in coatings consumed as received (kilograms).

NR 440.48(2)(b)16. 16. Mf is the mass of VOCs recovered by an emission control device (kilograms).

NR 440.48(2)(b)17. 17. N is the volume-weighted average mass of VOC emissions to the atmosphere per unit volume of coating solids applied (kilograms per liter).

NR 440.48(2)(b)18. 18. Qa is the volumetric flow rate of each gas stream leaving the control device and entering the atmosphere (dry standard cubic meters per hour).

NR 440.48(2)(b)19. 19. Qb is the volumetric flow rate of each gas stream entering the control device (dry standard cubic meters per hour).

NR 440.48(2)(b)20. 20. Qf is the volumetric flow rate of each gas stream emitted directly to the atmosphere (dry standard cubic meters per hour).

NR 440.48(2)(b)21. 21. R is the overall VOC emission reduction achieved for an affected facility (fraction).

NR 440.48(2)(b)22. 22. T is the transfer efficiency (fraction).

NR 440.48(2)(b)23. 23. Vs is the proportion of solids in each coating (or input stream) as received (fraction by volume).

NR 440.48(2)(b)24. 24. Wo is the proportion of VOCs in each coating (or input stream) as received (fraction by weight).

NR 440.48(3) (3) Standard for volatile organic compounds (VOC).

NR 440.48(3)(a) (a) On and after the date on which the initial performance test required to be conducted by s. NR 440.08 (1) is completed, no owner or operator subject to the provisions of this section may cause the discharge into the atmosphere of VOC emissions from any metal furniture surface coating operation in excess of 0.90 kilogram of VOC per liter of coating solids applied.