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]
Lt 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.
NR 463.13(2)
(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:
NR 463.13(2)(a)
(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).
NR 463.13(2)(b)
(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.
NR 463.13(3)
(3) Thermal chip dryer. On and after the compliance date established by
s. NR 463.115, the owner or operator of a thermal chip dryer may not discharge or cause to be discharged to the atmosphere emissions in excess of either of the following:
NR 463.13(3)(a)
(a) 0.40 kilogram (kg) of THC, as propane, per megagram (Mg) (0.80 lb of THC, as propane, per ton) of feed or charge from a thermal chip dryer at a secondary aluminum production facility that is a major source.
NR 463.13(3)(b)
(b) 2.50 micrograms (
mg) of D&F TEQ per Mg (3.5 x 10
-5 gr per ton) of feed or charge from a thermal chip dryer at a secondary aluminum production facility that is a major or area source.
NR 463.13(4)
(4) Scrap dryer, delacquering kiln, decoating kiln. On and after the compliance date established by
s. NR 463.115:
NR 463.13(4)(a)
(a) The owner or operator of a scrap dryer, delacquering kiln or decoating kiln may not discharge or cause to be discharged to the atmosphere emissions in excess of any of the following:
NR 463.13(4)(a)1.
1. 0.03 kg of THC, as propane, per Mg (0.06 lb of THC, as propane, per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source.
NR 463.13(4)(a)2.
2. 0.04 kg of PM per Mg (0.08 lb per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source.
NR 463.13(4)(a)3.
3. 0.25
mg of D&F TEQ
per Mg (3.5 x 10
-6 gr of D&F TEQ per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major or area source.
NR 463.13(4)(a)4.
4. 0.40 kg of HCl per Mg (0.80 lb per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source.
NR 463.13(4)(b)
(b) The owner or operator of a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(5)
(5) Scrap dryer, delacquering kiln and decoating kiln: alternative limits. The owner or operator of a scrap dryer, delacquering kiln or decoating kiln may choose to comply with the emission limits in this subsection as an alternative to the limits in
sub. (4) if the scrap dryer, delacquering kiln or decoating kiln is equipped with an afterburner having a design residence time of at least one second and the afterburner is operated at a temperature of at least 760
°C (1400
°F) at all times. On and after the compliance date established by
s. NR 463.115:
NR 463.13(5)(a)
(a) The owner or operator of a scrap dryer, delacquering kiln or decoating kiln may not discharge or cause to be discharged to the atmosphere emissions in excess of any of the following:
NR 463.13(5)(a)1.
1. 0.10 kg of THC, as propane, per Mg (0.20 lb of THC, as propane, per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source.
NR 463.13(5)(a)2.
2. 0.15 kg of PM per Mg (0.30 lb per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source.
NR 463.13(5)(a)3.
3. 5.0 mg of D&F TEQ per Mg (7.0 x 10
-5 gr of D&F TEQ per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major or area source.
NR 463.13(5)(a)4.
4. 0.75 kg of HCl per Mg (1.50 lb per ton) of feed or charge from a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source.
NR 463.13(5)(b)
(b) The owner or operator of a scrap dryer, delacquering kiln or decoating kiln at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(6)
(6) Sweat furnace. On and after the compliance date established by
s. NR 463.115, the owner or operator of a sweat furnace at a secondary aluminum production facility that is a major or area source may not discharge or cause to be discharged to the atmosphere emissions in excess of 0.80 nanogram (ng) of D&F TEQ per dscm (3.5 x 10
-10 gr per dscf) at 11% oxygen. A performance test is not required under
s. NR 463.163 (6) to demonstrate compliance with this emission standard provided that the owner or operator operates and maintains an afterburner with a design residence time of 0.8 seconds or greater and an operating temperature of 1600
°F or greater.
NR 463.13(7)
(7) Dross-only furnace. On and after the compliance date established by
s. NR 463.115, the owner or operator of a dross-only furnace 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:
NR 463.13(7)(a)
(a) Emissions in excess of 0.15 kg of PM per Mg (0.30 lb of PM per ton) of feed or charge.
NR 463.13(7)(b)
(b) Visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(8)
(8) Rotary dross cooler. On and after the compliance date established by
s. NR 463.115, the owner or operator of a rotary dross cooler 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:
NR 463.13(8)(a)
(a) Emissions in excess of 0.09 g of PM per dscm (0.04 gr per dscf).
NR 463.13(8)(b)
(b) Visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(9)
(9) Group 1 furnace. The owner or operator of a group 1 furnace shall use the limits in this subsection to determine the emission standards for a SAPU under
sub. (11).
NR 463.13(9)(a)
(a) 0.20 kg of PM per Mg (0.40 lb of PM per ton) of feed or charge from a group 1 furnace, that is not a melting and holding furnace processing only clean charge, at a secondary aluminum production facility that is a major source.
NR 463.13(9)(b)
(b) 0.40 kg of PM per Mg (0.80 lb of PM per ton) of feed or charge from a group 1 melting and holding furnace processing only clean charge at a secondary aluminum production facility that is a major source.
NR 463.13(9)(c)
(c) 15
mg of D&F TEQ per Mg (2.1 x 10
-4 gr of D&F TEQ per ton) of feed or charge from a group 1 furnace at a secondary aluminum production facility that is a major or area source. This limit does not apply if the furnace processes only clean charge.
NR 463.13(9)(d)
(d) 0.20 kg of HCl per Mg (0.40 lb of HCl per ton) of feed or charge or, if the furnace is equipped with an add-on air pollution control device, 10% of the uncontrolled HCl emissions, by weight, for a group 1 furnace at a secondary aluminum production facility that is a major source.
NR 463.13(9)(e)
(e) The owner or operator of a group 1 furnace at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere visible emissions in excess of 10% opacity from any PM add-on air pollution control device if a COM is chosen as the monitoring option.
NR 463.13(9)(f)
(f) The owner or operator may determine the emission standards for a SAPU by applying the group 1 furnace limits on the basis of the aluminum production weight in each group 1 furnace, rather than on the basis of feed or charge.
NR 463.13(9)(g)
(g) The owner or operator of a sidewell group 1 furnace that conducts reactive fluxing, except for cover flux, in the hearth, or that conducts reactive fluxing in the sidewell at times when the level of molten metal falls below the top of the passage between the sidewell and the hearth, shall comply with the emission limits of
pars. (a) to
(d) on the basis of the combined emissions from the sidewell and the hearth.
NR 463.13(10)
(10) In-line fluxer. Except as provided in
par. (c) for an in-line fluxer using no reactive flux material, the owner or operator of an in-line fluxer shall use the limits in this subsection to determine the emission standards for a SAPU under
sub. (11).
NR 463.13(10)(a)
(a) 0.02 kg of HCl per Mg (0.04 lb of HCl per ton) of feed or charge.
NR 463.13(10)(b)
(b) 0.005 kg of PM per Mg (0.01 lb of PM per ton) of feed or charge.
NR 463.13(10)(c)
(c) The emission limits in
pars. (a) and
(b) do not apply to an in-line fluxer that uses no reactive flux materials.
NR 463.13(10)(d)
(d) The owner or operator of an in-line fluxer at a secondary aluminum production facility that is a major source may not discharge or cause to be discharged to the atmosphere visible emissions in excess of 10% opacity from any PM add-on air pollution control device used to control emissions from the in-line fluxer, if a COM is chosen as the monitoring option.
NR 463.13(10)(e)
(e) The owner or operator may determine the emission standards for a SAPU by applying the in-line fluxer limits on the basis of the aluminum production weight in each in-line fluxer, rather than on the basis of feed or charge.
NR 463.13(11)
(11) Secondary aluminum processing unit. On and after the compliance date established by
s. NR 463.115, the owner or operator shall comply with the emission limits calculated using the equations for PM and HCl in
pars. (a) and
(b) for each secondary aluminum processing unit at a secondary aluminum production facility that is a major source. The owner or operator shall comply with the emission limit calculated using the equation for D&F in
par. (c) for each secondary aluminum processing unit at a secondary aluminum production facility that is a major or area source.
NR 463.13(11)(a)
(a) The owner or operator may not discharge or allow to be discharged to the atmosphere any 3-day, 24-hour rolling average emissions of PM in excess of:
where:
-
See PDF for diagram 
is the PM emission limit for individual emission unit i in
sub. (9) (a) and
(b) for a group 1 furnace or in
sub. (10) (b) for an in-line fluxer
NR 463.13 Note
Note: In-line fluxers using no reactive flux materials cannot be included in this calculation since they are not subject to the PM limit.
NR 463.13(11)(b)
(b) The owner or operator may not discharge or allow to be discharged to the atmosphere any 3-day, 24-hour rolling average emissions of HCl in excess of:
where:
-
See PDF for diagram is the HCl emission limit for individual emission unit i in
sub. (9) (d) for a group 1 furnace or in
sub. (10) (a) for an in-line fluxer
NR 463.13 Note
Note: In-line fluxers using no reactive flux materials cannot be included in this calculation since they are not subject to the HCl limit.
NR 463.13(11)(c)
(c) The owner or operator may not discharge or allow to be discharged to the atmosphere any 3-day, 24-hour rolling average emissions of D&F in excess of:
where:
-
See PDF for diagram is the D&F emission limit for individual emission unit i in
sub. (9) (c) for a group 1 furnace
NR 463.13 Note
Note: Clean charge furnaces cannot be included in this calculation since they are not subject to the D&F limit.
NR 463.13(11)(d)
(d) The owner or operator of a SAPU at a secondary aluminum production facility that is a major source may demonstrate compliance with the emission limits of
pars. (a) to
(c) by demonstrating that each emission unit within the SAPU is in compliance with the applicable emission limits of
subs. (9) and
(10).
NR 463.13(11)(e)
(e) The owner or operator of a SAPU at a secondary aluminum production facility that is an area source may demonstrate compliance with the emission limits of
par. (c) by demonstrating that each emission unit within the SAPU is in compliance with the emission limit of
sub. (9) (c).
NR 463.13(11)(f)
(f) With the prior approval of the department, an owner or operator may redesignate any existing group 1 furnace or in-line fluxer at a secondary aluminum production facility as a new emission unit. Any emission unit so redesignated may thereafter be included in a new SAPU at that facility. Any redesignation shall be solely for the purpose of this MACT standard and shall be irreversible.
NR 463.13 History
History: CR 04-023: cr.
Register December 2008 No. 636, eff. 1-1-09.
NR 463.14(1)(a)(a) On and after the compliance date established by
s. NR 463.115, the owner or operator shall operate all new and existing affected sources and control equipment according to the requirements in this section.
NR 463.14(1)(b)
(b) The owner or operator of an existing sweat furnace that meets the specifications of
s. NR 463.13 (6) shall operate the sweat furnace and control equipment according to the requirements of this section on and after the compliance date established by
s. NR 463.115.
NR 463.14(1)(c)
(c) The owner or operator of a new sweat furnace that meets the specifications of
s. NR 463.13 (6) shall operate the sweat furnace and control equipment according to the requirements of this section by March 23, 2000 or upon startup, whichever is later.
NR 463.14(1)(d)
(d) Operating requirements are summarized in the following table.
Table 2
a Thermal chip dryers, scrap dryers, delacquering kilns, dross-only furnaces, in-line fluxers and group 1 furnaces including melting and holding furnaces.
b OM&M plan- Operation, maintenance, and monitoring plan.
