[Code of Federal Regulations]
[Title 40, Volume 28]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR421.24]
[Page 463-466]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 421_NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY--Table
of Contents
Subpart B_Primary Aluminum Smelting Subcategory
Sec. 421.24 Standards of performance for new sources.
Any new source subject to this subpart shall achieve the following
new source performance standards:
(a) Subpart B--Anode and Cathode Paste Plant Wet Air.
Pollution Control--NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of paste
produced
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
[[Page 464]]
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(b) Subpart B--Anode Contact Cooling and Briquette Quenching.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of anodes cast
-------------------------
Benzo(a)pyrene................................ 0.007 0.003
Antimony...................................... .403 .180
Nickel........................................ .115 .077
Aluminum...................................... 1.277 .566
Fluoride...................................... 12.440 5.518
Oil and grease................................ 2.090 2.090
Total suspended solids........................ 3.135 2.508
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(c) Subpart B--Anode Bake Plant Wet Air Pollution Control.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of anodes baked
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(d) Subpart B--Cathode Reprocessing (Operated With Dry Potline
Scrubbing and Not Commingled With Other Process or Nonprocess Waters).
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of cryolite
recovered
-------------------------
Benzo(a)pyrene................................ 1.181 0.547
Antimony...................................... 420.400 189.200
Cyanide....................................... 157.600 70.060
Nickel........................................ 80.570 35.030
Aluminum...................................... 273.200 122.600
Fluoride...................................... 29,430.000 13,310.000
Oil and grease................................ 350.300 350.300
Total suspended solids........................ 2,172.000 945.800
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(e) Subpart B--Cathode Reprocessing (Operated With Dry Potline
Scrubbing and Commingled With Other Process or Nonprocess Waters).
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of cryolite
recovered
-------------------------
Benzo(a)pyrene................................ 1.181 0.547
Antimony...................................... 67.610 30.120
Cyanide....................................... 157.600 70.060
Nickel........................................ 19.270 12.960
Aluminum...................................... 214.000 94.930
Fluoride...................................... 2,084.000 924.800
Oil and grease................................ 350.300 350.300
Total suspended solids........................ 2,172.000 945.800
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(f) Subpart B--Potline Wet Air Pollution Control.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of aluminum
produced from
electrolytic reduction
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(g) Subpart B--Potroom Wet Air Pollution Control.
[[Page 465]]
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of aluminum
produced from
electrolytic reduction
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(h) Subpart B--Potline SO2 Emissions Wet Air Pollution
Control.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) aluminum
produced from
electrolytic reduction
-------------------------
Benzo(a)pyrene................................ 0.045 0.021
Antimony...................................... 2.588 1.153
Nickel........................................ .738 .496
Aluminum...................................... 8.194 3.634
Fluoride...................................... 79.790 35.400
Oil and grease................................ 13.410 13.410
Total suspended solids........................ 20.120 16.090
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(i) Subpart B--Degassing Wet Air Pollution Control.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of aluminum
produced from
electrolytic reduction
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(j) Subpart B--Pot Repair and Pot Soaking.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of aluminum
produced from
electrolytic reduction
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
(k) Subpart B--Direct Chill Casting Contact Cooling.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of aluminum
product from direct
chill casting
-------------------------
Benzo(a)pyrene................................ (\1\) (\1\)
Antimony...................................... 2.565 1.143
Nickel........................................ .731 .492
Aluminum...................................... 8.120 3.602
Fluoride...................................... 79.080 35.090
Oil and grease................................ 13.290 13.290
Total suspended solids........................ 19.940 15.950
pH............................................ (\2\) (\2\)
------------------------------------------------------------------------
\1\ There shall be no discharge allowance for this pollutant.
\2\ The pH shall be maintained within the range of 7.0 to 10.0 at all
times except for those situations when this waste is discharged
separately and without commingling with any other waste-water in which
case the pH shall be within the range of 6.0 to 10.0 at all times.
(l) Subpart B--Continuous Rod Casting Contact Cooling.
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pound per million
pounds) of aluminum
product from rod casting
-------------------------
Benzo(a)pyrene................................ (\1\) (\1\)
Antimony...................................... .201 .089
Nickel........................................ .057 .038
Aluminum...................................... .636 .282
Fluoride...................................... 6.188 2.746
Oil and grease................................ 1.040 1.040
Total suspended solids........................ 1.560 1.248
pH............................................ (\2\) (\2\)
------------------------------------------------------------------------
\1\ There shall be no discharge allowance for this pollutant.
\2\ Within the range of 7.0 to 10.0 at all times.
(m) Subpart B--Stationary Casting or Shot Casting Contact Cooling.
[[Page 466]]
NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
aluminum product from
stationary casting or
shot casting
-------------------------
Benzo(a)pyrene................................ .000 ...........
Antimony...................................... .000 .000
Nickel........................................ .000 .000
Aluminum...................................... .000 .000
Fluoride...................................... .000 .000
Oil and grease................................ .000 .000
Total suspended solids........................ .000 .000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
[49 FR 8792, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 52
FR 25558, July 7, 1987]