Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 438 - Air Contaminant Emissions Inventory Reporting Requirements › Section NR 438.02 - Definitions

Current through June 24, 2024
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:
(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.
Note:
Condensable PM, if present from a source,
				  is typically in the PM 2.5 size fraction and, therefore, all of it is a
				  component of both primary PM 2.5 and primary PM 10.
(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).
(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.
(1i) "Filterable PM 2.5"
				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.
(1k) "Filterable PM 10"
				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.
(1m) "Primary PM" means the
				sum of filterable PM and condensable PM.
(1o) "Primary PM 2.5" means the sum of
				filterable PM 2.5 and condensable PM.
(1q) "Primary PM 10" means the sum of
				filterable PM 10 and condensable PM.
(1s) "Process" means an activity occurring at
				a unit device that generates emissions, controls emissions, or discharges
				emissions.
Note:
Examples of processes include combustion,
				  coating, controlling, crushing, or discharging.
(1u) "Process type code" means a brief
				descriptor of the process type.
(2)
				"Source classification code" means a process-level code that describes the
				equipment or operation that is emitting a pollutant.
Note:
Source classification codes are available
				  as set forth by EPA's Emissions Inventory System, which is an information
				  system for storing all current and historical emissions inventory data.
(3) "Unit device" means the
				physical equipment or equipment line where a process occurs.
Note:
Examples of unit devices include boilers,
				  coating lines, baghouses, and stacks.
(4) "Unit device type code" means a brief
				descriptor of the unit device type.