Chapter NR 438
AIR CONTAMINANT EMISSIONS INVENTORY REPORTING REQUIREMENTS
NR 438.01 Applicability; purpose. NR 438.03 Required emissions inventories. NR 438.04 Content of emissions inventories. NR 438.01(1)(1) Applicability. This chapter applies to all air contaminant sources and to their owners and operators. NR 438.01(2)(2) Purpose. The purpose of this chapter is to establish, pursuant to ss. 285.11, 285.13, 285.17, and 299.15 (1) and (2), Stats., requirements for submission of emissions inventories for owners or operators of air contaminant sources. NR 438.01 HistoryHistory: Cr. Register, May, 1993, No. 449, eff. 6-1-93; CR 21-072: am. (2) Register July 2022 No. 799, eff. 8-1-22. NR 438.02NR 438.02 Definitions. The definitions contained in ch. NR 400 apply to the terms used in this chapter. In addition, the following definitions apply to the terms used in this chapter: NR 438.02(1a)(1a) “Condensable PM” means a material that is vapor phase at stack conditions but that condenses or reacts upon cooling and dilution in the ambient air to form solid or liquid PM immediately after discharge from the stack. NR 438.02 NoteNote: Condensable PM, if present from a source, is typically in the PM2.5 size fraction and, therefore, all of it is a component of both primary PM2.5 and primary PM10.
NR 438.02(1e)(1e) “Facility” means all stationary sources emitting air contaminants which belong to the same industrial grouping, are located on one or more contiguous or adjacent properties, and are under the control of the same person, or persons under common control. Emissions resulting from loading, unloading or stockpiling materials to or from vessels or vehicles while at a facility shall be considered as part of the facility’s emissions. Air contaminant sources, other than transportation related activities, shall be considered as part of the same industrial grouping if they are classified under the same 2-digit major group as described in the Standard Industrial Classification Manual, 1987, incorporated by reference in s. NR 484.05 (1). NR 438.02(1g)(1g) “Filterable PM” means particles that have an aerodynamic diameter equal to or less than 100 micrometers that are directly emitted by a source as a solid or liquid at stack or release conditions and captured on the filter of a stack test train. NR 438.02(1i)(1i) “Filterable PM2.5” means particles that have an aerodynamic diameter equal to or less than 2.5 micrometers that are directly emitted by a source as a solid or liquid at stack or release conditions and captured on the filter of a stack test train. NR 438.02(1k)(1k) “Filterable PM10” means particles that have an aerodynamic diameter equal to or less than 10 micrometers that are directly emitted by a source as a solid or liquid at stack or release conditions and captured on the filter of a stack test train. NR 438.02(1m)(1m) “Primary PM” means the sum of filterable PM and condensable PM. NR 438.02(1o)(1o) “Primary PM2.5” means the sum of filterable PM2.5 and condensable PM.