CCLME.ORG - 40 CFR PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY

(continued)
zinc
produced
-------------------------
Cadmium....................................... .150 .060
Zinc.......................................... .766 .315
------------------------------------------------------------------------

(f) Subpart H—Casting Wet Air Pollution Control.

PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
zinc cast
-------------------------
Cadmium....................................... .051 .021
Zinc.......................................... .262 .108
------------------------------------------------------------------------

(g) Subpart H—Casting Contact Cooling.

PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
zinc cast
-------------------------
Cadmium....................................... 0.036 0.014
Zinc.......................................... 0.185 0.076
------------------------------------------------------------------------

(h) Subpart H—Cadmium Plant Wastewater.

PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
cadmium
produced
-------------------------
Cadmium....................................... 1.234 0.494
Zinc.......................................... 6.295 2.592
------------------------------------------------------------------------

§ 421.87 [Reserved]
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Subpart I—Metallurgical Acid Plants Subcategory
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§ 421.90 Applicability: Description of the metallurgical acid plants subcategory.
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The provisions of this subpart apply to process wastewater discharges resulting from or associated with the manufacture of by-product sulfuric acid at primary copper smelters, primary zinc facilities, primary lead facilities, and primary molybdenum facilities, including any associated air pollution control or gas-conditioning systems for sulfur dioxide off-gases from pyrometallurgical operations.

[49 FR 8811, Mar. 8, 1984, as amended at 50 FR 38342, Sept. 20, 1985]

§ 421.91 Specialized definitions.
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(a) Except as provided below, the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 apply to this subpart.

(b) The term product means 100 percent equivalent sulfuric acid, H2 SO4 capacity.

[50 FR 38342, Sept. 20, 1985]

§ 421.92 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
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Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

Subpart I_Metallurgical Acid Plant
------------------------------------------------------------------------
BPT effluent limitations
-------------------------
Pollutant or pollutant property Maximum for
Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds of
100%
sulfuric
acid
capacity
-------------------------
Cadmium....................................... 0.180 0.090
Copper........................................ 5.000 2.000
Lead.......................................... 1.800 0.790
Zinc.......................................... 3.600 0.900
Fluoride \1\.................................. 212.800 121.000
Molybdenum \1\................................ 40.180 20.790
Total suspended solids........................ 304.000 152.000
pH............................................ \2\ \2\
------------------------------------------------------------------------
\1\ For Molybdenum Acid Plants Only.
\2\ Within the range of 6.0 to 9.0 at all times.

[50 FR 38342, Sept. 20, 1985; 50 FR 52776, Dec. 26, 1985]

§ 421.93 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
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Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

Subpart I_Metallurgical Acid Plant_BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per/
million
pounds) of
100 pct
sulfuric
acid
capacity
-------------------------
Arsenic....................................... 3.550 1.584
Cadmium....................................... 0.511 0.204
Copper........................................ 3.269 1.558
Lead.......................................... 0.715 0.332
Zinc.......................................... 2.605 1.073
Fluoride\1\................................... 89.390 50.820
Molybdenum \1\................................ [Reserved] [Reserved].
------------------------------------------------------------------------
\1\ For Molybdenum acid plants only.

[50 FR 38343, Sept. 20, 1985, as amended at 55 FR 31697, Aug. 3, 1990]

§ 421.94 Standards of performance for new sources.
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Any new source subject to this subpart shall achieve the following new source performance standards:

Subpart I_Metallurgical Acid Plant_NSPS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per/
million
pounds) of
100 pct
sulfuric
acid
capacity
-------------------------
Arsenic....................................... 3.550 1.584
Cadmium....................................... 0.511 0.204
Copper........................................ 3.269 1.558
Lead.......................................... 0.715 0.332
Zinc.......................................... 2.605 1.073
Fluoride\1\................................... 89.390 50.820
Molybdenum \1\................................ [Reserved] [Reserved].
Total suspended solids........................ 38.310 30.650
pH............................................ (\2\) (\2\)
------------------------------------------------------------------------
\1\ For Molybdenum acid plants only.
\2\ Within the range of 7.5 to 10.0 at all times.

[50 FR 38343, Sept. 20, 1985, as amended at 55 FR 31697, Aug. 3, 1990]

§ 421.95 Pretreatment standards for existing sources.
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Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in metallurgical acid plant blowdown introduced into a POTW shall not exceed the following values:

Subpart I_Metallurgical Acid Plant_PSES
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pound per/
million
pounds) of
100 pct
sulfuric
acid
capacity
-------------------------
Cadmium....................................... 0.511 0.204
Zinc.......................................... 2.605 1.073
------------------------------------------------------------------------

[50 FR 38343, Sept. 20, 1985]

§ 421.96 Pretreatment standards for new sources.
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Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in metallurgical acid plant blowdown introduced into a POTW shall not exceed the following values:

Subpart I_Metallurgical Acid Plant_PSNS
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
100 pct
sulfuric
acid
capacity
-------------------------
Arsenic....................................... 3.550 1.584
Cadmium....................................... 0.511 0.204
Copper........................................ 3.269 1.558
Lead.......................................... 0.715 0.332
Zinc.......................................... 2.605 1.073
Fluoride \1\.................................. 89.390 50.820
Molybdenum \1\................................ [Reserved] [Reserved].
------------------------------------------------------------------------
\1\ For Molybdenum acid plants only.

[50 FR 38343, Sept. 20, 1985, as amended at 55 FR 31697, Aug. 3, 1990]

§ 421.97 [Reserved]
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Subpart J—Primary Tungsten Subcategory
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§ 421.100 Applicability: Description of the primary tungsten subcategory.
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The provisions of this subpart are applicable to discharges resulting from the production of tungsten at primary tungsten facilities.

[49 FR 8812, Mar. 8, 1984]

§ 421.101 Specialized definitions.
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For the purpose of this subpart the general information, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

[49 FR 8812, Mar. 8, 1984]

§ 421.102 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
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Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Subpart J—Tungstic Acid Rinse.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungstic
acid (as W)
produced
-------------------------
Lead.......................................... 17.230 8.205
Zinc.......................................... 59.900 25.030
Ammonia (as N)................................ 5,469.000 2,404.00
Total suspended solids........................ 1,682.000 800.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(b) Subpart J—Acid Leach Wet Air Pollution Control.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungstic
acid (as W)
produced
-------------------------
Lead.......................................... 15.040 7.162
Zinc.......................................... 52.280 21.840
Ammonia (as N)................................ 4,773.000 2,098.000
Total suspended solids........................ 1,468.000 698.300
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(c) Subpart J—Alkali Leach Wash.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
sodium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 0.000 0.000
Zinc.......................................... 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
Total suspended solids........................ 0.000 0.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(d) Subpart J—Alkali Leach Wash Condensate.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
sodium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 8.057 3.837
Zinc.......................................... 28.011 11.700
Ammonia (as N)................................ 2,557.000 1,124.000
Total suspended solids........................ 786.200 374.100
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
ammonium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 37.160 17.700
Zinc.......................................... 129.200 53.970
Ammonia (as N)................................ 11,790.000 5,185.000
Total Suspended solids........................ 3,627.000 1,726.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
ammonium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 37.160 17.700
Zinc.......................................... 129.200 53.970
Ammonia (as N) (\2\).......................... 11,790.000 5,185.000
Total suspended solids........................ 3,627.000 1,726.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.
\2\ The effluent limitation guideline for this pollutant does not apply
if (a) the mother liquor feed to the ion exchange process or the
raffinate from the ion exchange process contains sulfates at
concentrations exceeding 1000 mg/l; (b) this mother liquor or
raffinate is treated by ammonia steam stripping; and (c) such mother
liquor or raffinate is not commingled with any other process or
nonprocess waters prior to steam stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
calcium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 31.000 14.760
Zinc.......................................... 107.800 45.020
Ammonia (as N)................................ 9,838.000 4,325.000
Total suspended solids........................ 3,026.000 1,439.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
ammonium
paratungsta
te (as W)
produced
-------------------------
Lead.......................................... 0.000 0.000
Zinc.......................................... 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
Total suspended solids........................ 0.000 0.000
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungstic
oxide (as
W) produced
-------------------------
Lead.......................................... 11.600 5.523
Zinc.......................................... 40.320 16.850
Ammonia (as N)................................ 3,681.000 1,618.000
Total suspended solids........................ 1,132.000 538.500
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungstic
oxide (as
W) produced
-------------------------
Lead.......................................... 0.026 0.013
Zinc.......................................... 0.092 0.038
Ammonia (as N)................................ 8.398 3.692
Total suspended solids........................ 2.583 1.229
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungsten
metal
produced
-------------------------
Lead.......................................... 12.940 6.161
Zinc.......................................... 44.970 18.790
Ammonia (as N)................................ 4,106.000 1,805.000
Total suspended solids........................ 1,263.000 600.700
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(l) Subpart J—Reduction to Tungsten Water of Formation.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungsten
metal
produced
-------------------------
Lead.......................................... .205 .098
Zinc.......................................... .714 .298
Ammonia (as N)................................ 65.190 28.660
Total suspended solids........................ 20.050 9.536
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungsten
metal
produced
-------------------------
Lead.......................................... 1.008 0.48
Zinc.......................................... 3.504 1.464
Ammonia (as N)................................ 319.900 140.700
Total suspended solids........................ 98.400 46.800
pH............................................ (\1\) (\1\)
------------------------------------------------------------------------
\1\ Within the range of 7.0 to 10.0 at all times.

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

BPT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungsten
metal
produced
-------------------------
Lead.......................................... .000 .000
Zinc.......................................... .000 .000
Ammonia (as N)................................ .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 8812, Mar. 8, 1984, as amended at 53 FR 1706, Jan. 21, 1988]

§ 421.103 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
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Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

(a) Subpart J—Tungstic Acid Rinse.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungstic
acid (as W)
produced
-------------------------
Lead.......................................... 11.490 5.333
Zinc.......................................... 41.850 17.230
Ammonia (as N)................................ 5,469.000 2,404.000
------------------------------------------------------------------------

(b) Subpart J—Acid Leach Wet Air Pollution Control.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
tungstic
acid (as W)
produced
-------------------------
Lead.......................................... 1.003 0.466
Zinc.......................................... 3.653 1.504
Ammonia (as N)................................ 477.400 209.900
------------------------------------------------------------------------

(c) Subpart J—Alkali Leach Wash.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
sodium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 0.000 0.000
Zinc.......................................... 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
------------------------------------------------------------------------

(d) Subpart J—Alkali Leach Wash Condensate.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
sodium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 5.372 2.494
Zinc.......................................... 19.570 8.057
Ammonia (as N)................................ 2,557.000 1,124.000
------------------------------------------------------------------------

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
ammonium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 24.780 11.500
Zinc.......................................... 90.240 37.160
Ammonia (as N)................................ 11,790.000 5,185.000
------------------------------------------------------------------------

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average
------------------------------------------------------------------------
mg/kg
(pounds per
million
pounds) of
ammonium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 24.780 11.500
Zinc.......................................... 90.240 37.160
Ammonia (as N) \1\............................ 11,790.000 5,185.000
------------------------------------------------------------------------
\1\ The effluent limitation for this pollutant does not apply if a) the
motor liquor feed to the ion exchange process or the raffinate from
the ion exchange process contains sulfates at concentrations exceeding
1000 mg/1; b) this mother liquor or raffinate is treated by ammonia
steam stripping; and c) such mother liquor or raffinate is not
commingled with any other process or nonprocess waters prior to steam
stripping for ammonia removal.

(g) Subpart J—Calcium Tungstate Precipitate Wash.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any one day average
------------------------------------------------------------------------
mg/kg
(pounds per/
million
pounds) of
calcium
tungstate
(as W)
produced
-------------------------
Lead.......................................... 20.670 9.594
Zinc.......................................... 75.280 31.000
Ammonia (as N)................................ 9,838.000 4,325.000
------------------------------------------------------------------------

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any one day average
------------------------------------------------------------------------
mg/kg
(pounds per/
million
pounds) of
ammonium
paratungsta
te (as W)
produced
-------------------------
Lead.......................................... 0.000 0.000
Zinc.......................................... 0.000 0.000
Ammonia (as N)................................ 0.000 0.000
------------------------------------------------------------------------

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

BAT Effluent Limitations
------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any one day average
------------------------------------------------------------------------
mg/kg
(pounds per/
million
pounds) of
tungstic
oxide (as
W) produced
-------------------------
Lead.......................................... 0.773 0.359
Zinc.......................................... 2.817 1.160
Ammonia (as N)................................ 368.200 161.900
------------------------------------------------------------------------

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.BAT Effluent Limitations (continued)