Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 463 - National Emission Standards For Hazardous Air Pollutants For Metals Treating And Processing › Subchapter II - Secondary Aluminum Production › Section NR 463.13 - Emission standards for affected sources and emission units

Current through June 24, 2024
(1) SUMMARY.
				  The owner or operator of a new or existing affected source shall comply with
				  each applicable limit in this section. The following table summarizes the
				  emission standards for each type of source:
Table 1
Emission Standards for New and Existing Affected
					 Sources
Affected source/ Emission
								  Unit
Pollutant
Limit
Units
All new and existing affected sources and
								  emission units that are controlled with a PM add-on control device and that
								  choose to monitor with a COM; and all new and existing aluminum scrap shredders
								  that choose to monitor with a COM or to monitor visible emissions
Opacity
10
percent
New and existing aluminum scrap shredder
PM
0.01
gr/dscf
New and existing thermal chip dryer
THC
D&F a
0.80
2.50
lb/ton of feed
µTEQ/Mg of feed
New and existing scrap dryer, delacquering kiln,
								  or decoating kiln
OR
PM
HCl
THC
D&F a
0.08
0.80
0.06
0.25
lb/ton of feed
lb/ton of feed
lb/ton of feed
µ TEQ/Mg of feed
Alternative limits if afterburner has a design
								  residence time of at least 1 second and operates at a temperature of least
								  1400°F
PM
HCl
THC
D&F a
0.30
1.50
0.20
5.0
lb/ton of feed lb/ton of feed
lb/ton of feed
µ TEQ/Mg of feed
New and existing sweat furnace
D&F a
0.80
ng TEQ/dscm @ 11% O2
																b
New and existing dross-only furnace
PM
0.30
lb/ton of feed
New and existing in-line fluxer
								  c
HCl
PM
0.04
0.01
lb/ton of feed
lb/ton of feed
New and existing inline fluxer with no reactive
								  fluxing
No Limit
Work practice: no reactive fluxing
New and existing rotary dross cooler
PM
0.04
gr/dscf
New and existing clean furnace (Group 2)
No Limit
Work practices: clean charge only and no reactive
								  fluxing
New and existing group 1 melting and holding
								  furnace (processing only clean charge)c
PM
HCl
0.80
0.40
or
10
lb/ton of feed
lb/ton of feed
percent of the HCl upstream of an add-on control
								  device
New and existing group 1 furnace
								  c
PM
HCl
0.40
0.40
or
10
lb/ton of feed
lb/ton of feed
percent of the HCl upstream of an add-on control
								  device
D&F a
15.0
µg TEQ/Mg of feed
New and existing group 1 furnace
								  c with clean charge only
PM
HCl
D&F a
0.40
0.40
or
10
No Limit
lb/ton of feed
lb/ton of feed
percent of the HCl upstream of an add-on control
								  device
Clean charge only
See
								  Image
a D&F limit applies to a unit at a major or area
					 source.
b Sweat furnaces equipped with afterburners meeting the
					 specifications of s. NR 463.13(6) are not required to conduct a performance
					 test.
c These limits are also used to calculate the limits
					 applicable to secondary aluminum processing units.
d Equation definitions:
LiPM is the PM emission limit for
					 individual emission unit i in the secondary aluminum processing unit [kg/Mg
					 (lb/ton) of feed]
Ti is the feed rate for individual
					 emission unit i in the secondary aluminum processing unit
LtPM is the overall PM emission
					 limit for the secondary aluminum processing unit [kg/Mg (lb/ton) of
					 feed]
LiHCl is the HCl emission limit for
					 individual emission unit i in the secondary aluminum processing unit [kg/Mg
					 (lb/ton) of feed]
LtHCl is the overall HCl emission
					 limit for the secondary aluminum processing unit [kg/Mg (lb/ton) of
					 feed]
Li D&F is the D&F emission
					 limit for individual emission unit i [mg TEQ/Mg (gr TEQ/ton) of feed]
L
t D&F
is the overall D&F
					 emission limit for the secondary aluminum processing unit [mg TEQ/Mg (gr
					 TEQ/ton) of feed]
n is the number of units in the secondary aluminum
					 processing unit
e In-line fluxers using no reactive flux materials cannot
					 be included in this calculation since they are not subject to the PM
					 limit.
f In-line fluxers using no reactive flux materials cannot
					 be included in this calculation since they are not subject to the HCl
					 limit.
g Clean charge furnaces cannot be included in this
					 calculation since they are not subject to the D&F limit.
(2) ALUMINUM SCRAP SHREDDER. On and after the
				  compliance date established by s.
				  NR
				  463.115, the owner or operator of an aluminum scrap
				  shredder at a secondary aluminum production facility that is a major source may
				  not discharge or cause to be discharged to the atmosphere either of the
				  following:
(a) Emissions in excess of 0.023
				  grams of PM per dry standard cubic meter (0.010 grain of PM per dry standard
				  cubic foot).
(b) Visible emissions
				  in excess of 10% opacity from any PM add-on air pollution control device if a
				  continuous opacity monitor (COM) or visible emissions monitoring is chosen as
				  the monitoring option.