NR 424.04 Aerosol can filling. NR 424.05 Yeast manufacturing. NR 424.01(1)(1) Applicability. This chapter applies to all process lines which are direct air contaminant sources and to their owners and operators. NR 424.01(2)(2) Purpose. This chapter is adopted under ss. 285.11, 285.13 and 285.17, Stats., to categorize organic compound emissions from process lines into a separate organic compound air contaminant source category and to establish emission limitations for this category of sources in order to protect air quality. NR 424.02NR 424.02 Definitions. The definitions contained in chs. NR 400, 419, 420 and 421 apply to the terms used in this chapter. In addition, the following definitions apply to the terms used in this chapter: NR 424.02(1)(1) “Aerosol can filling facility” means any facility which operates one or more aerosol can filling lines. NR 424.02(2)(2) “Aerosol can filling line” means any process line which inserts aerosol propellants composed of butanes, isobutanes, propanes or any other VOC into cans. NR 424.02(3)(3) “Fermentation batch” means a fermentation cycle occurring in a fermenter. NR 424.02(4)(4) “First generation fermenter” means a vessel in which yeast and nutrients are aerated to produce yeast for a trade fermenter. NR 424.02(5)(5) “Liquid yeast” means a hypothetical weight of yeast determined by multiplying an actual weight of yeast by the actual weight percent solids divided by 30%. NR 424.02(6)(6) “Stock fermenter” means a vessel in which yeast and nutrients are aerated to produce yeast for a first generation fermenter. NR 424.02(7)(7) “Trade fermenter” means a vessel in which yeast and nutrients are aerated to produce the final fermentation batch. NR 424.02 HistoryHistory: Cr. Register, September, 1986, No. 369, eff. 10-1-86; am. (1) and cr. (2), Register, April, 1988, No. 388, eff. 5-1-88; cr. (3) to (7), Register, June, 1994, No. 462, eff. 7-1-94; am. (intro.), Register, October, 1999, No. 526, eff. 11-1-99. NR 424.03NR 424.03 Process lines emitting organic compounds. NR 424.03(1)(a)(a) This section applies to all process lines which emit organic compounds, solvents or mixtures, with the following exceptions: NR 424.03(1)(a)1.1. Process lines outside the Southeastern Wisconsin Intrastate AQCR on which construction or modification commenced on or before April 1, 1972. NR 424.03(1)(a)2.2. Organic compound-water separation systems that process 757 liters (200 gallons) per day or less. NR 424.03(1)(a)3.3. Enclosed paint spraying operations from which volatile organic compound emissions are never greater than 13.6 kilograms (30 pounds) in any day. NR 424.03(1)(a)4.4. All other process lines from which volatile organic compound emissions are never greater than 6.8 kilograms (15 pounds) in any day. NR 424.03(1)(b)(b) Where process lines are subject to emission limitations listed elsewhere in chs. NR 419 to 423, the requirements of this section shall apply in accord with the provisions of s. NR 425.03 (7) (b). NR 424.03(1)(c)(c) This section does not apply to any individual cold cleaning, batch vapor degreasing, or conveyorized degreasing operation that is subject to ch. NR 469. NR 424.03(2)(2) Emission limitations. Process lines to which this section applies shall meet the following emission limitations: NR 424.03(2)(a)(a) Process lines on which construction or modification commenced before August 1, 1979, shall control emissions of photochemically reactive organic compounds by 85%. NR 424.03(2)(b)(b) Process lines on which construction or modification commenced on or after August 1, 1979, and which are not subject to emission limitations listed elsewhere in chs. NR 419 to 423 shall control volatile organic compound emissions by at least 85%.