NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY

• Citation: 40 CFR Part 421
• Sections: 199

§ 421.1 Applicability.

This part applies to facilities producing primary metals from ore concentrates and recovering secondary metals from recycle wastes which discharge or may discharge pollutants to waters of the United States or which introduce or may introduce pollutants into a publicly owned treatment works. The applicability of this part to alloying or casting of nonferrous metals is limited to alloying or casting of hot metal directly from the nonferrous metals manufacturing process without cooling. Remelting followed by alloying or cooling is included in the aluminum forming, nonferrous metals forming, or metal molding and casting point source categories.

§ 421.3 Monitoring and reporting requirements.

The following special monitoring requirements apply to all facilities controlled by this regulation:

(a) The monthly average regulatory values shall be the basis for the monthly average discharge in direct discharge permits and for pretreatment standards. Compliance with the monthly discharge limit is required regardless of the number of samples analyzed and averaged.

(b) Periodic analysis for cyanide are not required for a facility in the primary beryllium subcategory (subpart O of this part) when both of the following conditions are met:

(1) The first wastewater sample taken in each calandar year has been analyzed and found to contain less than 0.07 mg/1 cyanide.

(2) The owner or operator of the primary beryllium manufacturing facility certifies in writing to the POTW authority or permit issuing authority that cyanide is neither generated nor used in the beryllium manufacturing process employed at that facility.

§ 421.4 Compliance date for pretreatment standards for existing sources (PSES).

The PSES compliance deadline in subparts A through M is March 8, 1987. The PSES compliance deadline for plants in subparts N through AE is September 20, 1988.

§ 421.5 Removal allowances for pretreatment standards.

Removal allowances pursuant to 40 CFR 403.7(a) may be granted for the toxic metals limited in 40 CFR part 421 when used as indicator pollutants.

§ 421.10 Applicability; description of the bauxite refining subcategory.

The provisions of this subpart are applicable to discharges resulting from the refining of bauxite to alumina by the Bayer process or by the combination process.

§ 421.11 Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term bauxite shall mean ore containing alumina monohydrate or alumina trihydrate which serves as the principal raw material for the production of alumina by the Bayer process or by the combination process.

(c) The term product shall mean alumina.

(d) For all impoundments the term within the impoundment for purposes of calculating the volume of process wastewater which may be discharged, shall mean the surface area within the impoundment at the maximum capacity plus the area of the inside and outside slopes of the impoundment dam and the surface area between the outside edge of the impoundment dam and seepage ditches upon which rain falls and is returned to the impoundment. For the purpose of such calculations, the surface area allowance for external appurtenances to the impoundment shall not be more than 30 percent of the water surface area within the impoundment dam at maximum capacity.

(e) The term pond water surface area for the purpose of calculating the volume of waste water shall mean the area within the impoundment for rainfall and the actual water surface area for evaporation.

§ 421.12 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 control technology currently available:

(a) Subject to the provisions of paragraph (b) of this section, the following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best practicable control technology currently available: There shall be no discharge of process waste water pollutants to navigable waters.

(b) During any calendar month there may be discharged from the overflow of a process waste water impoundment either a volume of process waste water equal to the difference between the precipitation for that month that falls within the impoundment and the evaporation within the impoundment for that month, or, if greater, a volume of process waste water equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation for that month as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center).

§ 421.13 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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) Subject to the provisions of paragraph (b) of this section, the following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable: There shall be no discharge of process waste water pollutants to navigable waters.

(b) During any calendar month there may be discharged from the overflow of a process waste water impoundment either a volume of process waste water equal to the difference between the precipitation for that month that falls within the impoundment and the evaporation within the impoundment for that month, or, if greater, a volume of process waste water equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation for that month as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center).

§ 421.15 Standards of performance for new sources.

(a) Subject to the provisions of paragraph (b) of this section, the following standards of performance establish the quantity or quality of pollutants or pollutant properties which may be discharged by a new source subject to the provisions of this subpart: There shall be no discharge of process waste water pollutants to navigable waters.

(b) During any calendar month there may be discharged from the overflow of a process waste water impoundment either a volume of process waste water equal to the difference between the precipitation for that month that falls within the impoundment and the evaporation within the impoundment for that month, or, if greater, a volume of process waste water equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation for that month as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center).

§ 421.16 Pretreatment standards for new sources.

Any new sources subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

§ 421.20 Applicability: description of the primary aluminum smelting subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of aluminum from alumina in the Hall-Heroult process.

§ 421.21 Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter, shall apply to this subpart.

(b) The term product shall mean hot aluminum metal.

(c) If a permittee chooses to analyze for benzo(a)pyrene using any EPA-approved method, any “non-detected” measurements shall be considered zeroes for the purpose of determining compliance with this regulation.

§ 421.22 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 (BPT):

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

Metric units—kg/kkg of product

English units—lbs/thousand lbs of product

Fluoride

2.0

1.0

Total Suspended solids

3.0

1.5

pH

( 1 )

( 1 )

1 Within the range of 6 to 9 at all times.

§ 421.23 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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 B—Anode and Cathode Paste Plant Wet Air Pollution Control

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of paste produced

Benzo(a)pyrene

0.005

0.002

Antimony

.263

.117

Nickel

.075

.050

Aluminum

.831

.369

Fluoride

8.092

3.591

(b) Subpart (B)—Anode Contact Cooling and Briquette Quenching.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds 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

(c) Subpart (B)—Anode Bake Plant Wet Air Pollution Control (Closed Top Ring Furnace).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of anodes baked

Benzo(a)pyrene

0.146

0.067

Antimony

8.346

3.719

Nickel

2.378

1.600

Aluminum

26.420

11.720

Fluoride

257.300

114.200

(d) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Spray Tower Only).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of anodes baked

Benzo(a)pyrene

0.002

0.001

Antimony

.097

.043

Nickel

.028

.019

Aluminum

.306

.136

Fluoride

2.975

1.320

(e) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Wet Electrostatic Precipitator and Spray Tower).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of anodes baked

Benzo(a)pyrene

0.025

0.011

Antimony

1.409

.628

Nickel

.402

.270

Aluminum

4.461

1.979

Fluoride

43.440

19.270

(f) Subpart B—Anode Bake Plant Wet Air Pollution Control (Tunnel Kiln).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of anodes baked

Benzo(a)pyrene

0.038

0.018

Antimony

2.197

.979

Nickel

.626

.421

Aluminum

6.953

3.084

Fluoride

67.710

30.050

(g) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds 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

(h) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds 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

(i) Subpart B—Cathode Reprocessing (Operated With Wet Potline Scrubbing).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of cryolite recovered

Benzo(a)pyrene

.000

Antimony

.000

.000

Cyanide

.000

.000

Nickel

.000

.000

Aluminum

.000

.000

Fluoride

.000

.000

(j) Subpart B—Potline Wet Air Pollution Control (Operated Without Cathode Reprocessing).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

0.028

0.013

Antimony

1.618

.721

Nickel

.461

.310

Aluminum

5.120

2.271

Fluoride

49.860

22.130

(k) Subpart B—Potline Wet Air Pollution Control (Operated With Cathode Reprocessing and Not Commingled With Other Process or Nonprocess Waters).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

0.028

0.013

Antimony

10.060

4.525

Cyanide

3.771

1.676

Nickel

1.928

.838

Aluminum

6.537

2.933

Fluoride

703.900

318.500

(l) Potline Wet Air Pollution Control Cooperated With Cathode Reprocessing and Commingled With Other Process or Nonprocess Wastewaters).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

0.028

0.013

Antimony

1.618

.721

Cyanide

3.771

1.676

Nickel

0.461

.310

Aluminum

5.120

2.271

Fluoride

49.860

22.130

(m) Subpart B—Potroom Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

0.056

0.026

Antimony

3.204

1.428

Nickel

.913

.614

Aluminum

10.140

4.499

Fluoride

98.770

43.830

(n) Subpart B—Potline SO 2 Emissions Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of 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

(o) Subpart B—Degassing Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

( 1 )

( 1 )

Antimony

5.036

2.244

Nickel

1.435

.965

Aluminum

15.940

7.071

Fluoride

155.300

68.880

1 There shall be no discharge allowance for this pollutant.

(p) Subpart B—Pot Repair and Pot Soaking.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

(q) Subpart B—Direct Chill Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

1 There shall be no discharge allowance for this pollutant.

(r) Subpart B—Continuous Rod Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

1 There shall be no discharge allowance for this pollutant.

(s) Subpart B—Stationary Casting or Shot Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound 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

§ 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of paste produced

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.

(b) Subpart B—Anode Contact Cooling and Briquette Quenching.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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 SO 2 Emissions Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly 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.

§ 421.26 Pretreatment standards for new sources.

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 primary aluminum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart B—Anode and Cathode Paste Plant Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of paste produced

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

(b) Subpart B—Anode Contact Cooling and Briquette Quenching.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of anodes cast

Benzo(a)pyrene

0.007

0.003

Nickel

.115

.077

Fluoride

12.440

5.518

(c) Subpart B—Anode Bake Plant Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of anodes baked

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

(d) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of cryolite recovered

Benzo(a)pyrene

1.181

0.547

Cyanide

157.600

70.060

Nickel

80.570

35.030

Fluoride

29,430.000

13,310.000

(e) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of cryolite recovered

Benzo(a)pyrene

1.181

0.547

Cyanide

157.600

70.060

Nickel

19.270

12.960

Fluoride

2,084.000

924.800

(f) Subpart B—Potline Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

(g) Subpart B—Potroom Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

(h) Subpart B—Potline SO 2 Emissions Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

0.045

0.021

Nickel

.738

.496

Fluoride

79.790

35.400

(i) Subpart B—Degassing Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

(j) Subpart B—Pot Repair and Pot Soaking.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum produced from electrolytic reduction

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

(k) Subpart B—Direct Chill Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum product from direct chill casting

Benzo(a)pyrene

( 1 )

( 1 )

Nickel

.731

.492

Fluoride

79.080

35.090

1 There shall be no discharge allowance for this pollutant.

(l) Subpart B—Continuous Rod Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum product from rod casting

Benzo(a)pyrene

( 1 )

( 1 )

Nickel

.057

.038

Fluoride

6.188

2.746

1 There shall be no discharge allowance for this pollutant.

(m) Subpart B—Stationary Casting or Shot Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound per million pounds) of aluminum product from stationary casting or shot casting

Benzo(a)pyrene

.000

Nickel

.000

.000

Fluoride

.000

.000

§ 421.30 Applicability: Description of the secondary aluminum smelting subcategory.

The provisions of this subpart are applicable to discharges resulting from the recovery, processing, and remelting of aluminum scrap to produce metallic aluminum alloys.

§ 421.31 Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term product shall mean hot aluminum metal.

(c) At-the-source means at or before the commingling of delacquering scrubber liquor blowdown with other process or nonprocess wastewaters.

§ 421.32 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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) The following limitations establish the quantity or quality of pollutants or pollutant properties, which may be discharged by a point source subject to the provisions of this subpart and which uses water for metal cooling, after application of the best practicable control technology currently available: There shall be no discharge of process wastewater pollutants to navigable waters.

(b) The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart and which uses aluminum fluoride in its magnesium removal process (“demagging process”), after application of the best practicable control technology currently available: There shall be no discharge of process wastewater pollutants to navigable waters.

(c) The following limitations establish the quantity or quality of pollutants or pollutant properties controlled by this section, which may be discharged by a point source subject to the provisions of this subpart and which uses chlorine in its magnesium removal process, after application of the best practicable control technology currently available:

Effluent Limitations

Effluent characteristic

Average of daily values for 30 consecutive days shall not exceed—

Metric units (kilograms per 1,000 kg magnesium removed)

TSS

175

COD

6.5

pH

( 1 )

1 Within the range of 7.5 to 9.0.

(d) The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart and which processes residues by wet methods, after application of the best practical control technology currently available:

Effluent Limitations

Effluent characteristic

Average of daily values for 30 consecutive days shall not exceed—

Metric units (kilograms per 1,000 kg of product)

TSS

1.5

Fluoride

0.4

Ammonia (as N)

0.01

Aluminum

1.0

Copper

0.003

COD

1.0

pH

( 1 )

1 Within the range of 7.5 to 9.0.

§ 421.33 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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 C—Scrap Drying Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound's per million pounds) of aluminum scrap dried

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

(b) Subpart C—Scrap Screening and Milling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound's per million pounds) of aluminum scrap screened and milled

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

(c) Subpart C—Dross Washing.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound's per million pounds) of dross washed

Lead

3.043

1.413

Zinc

11.090

4.565

Aluminum

66.410

29.450

Ammonia (as N)

1,449.000

636.900

(d) Subpart C—Demagging Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum demagged

Lead

0.216

0.100

Zinc

0.786

0.324

Aluminum

4.711

2.090

Ammonia (as N)

102.800

45.180

(e) Subpart C—Delacquering Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pound's per million pounds) of aluminum delacquered

Lead

0.093

0.043

Zinc

0.340

0.140

Aluminum

2.035

0.903

Ammonia (as N)

44.389

19.514

Total phenolics (4-AAP method) 1

0.004

1 At the source.

(f) Subpart C—Direct Chill Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.372

.173

Zinc

1.356

.558

Aluminum

8.120

3.602

Ammonia (as N)

177.200

77.880

(g) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum cast

Lead

0.019

0.009

Zinc

0.068

0.028

Aluminum

0.409

0.182

Ammonia (as N)

8.931

3.926

(h) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chloride Demagging Wet Air Pollution Control is Practiced On Site).

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

(i) Subpart C—Stationary Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

(j) Subpart C—Shot Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

§ 421.34 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Subpart C—Scrap Drying Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average.

mg/kg (pounds per million pounds) of aluminum scrap dried

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

Total suspended solids

.000

.000

Oil and grease

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times

(b) Subpart C—Scrap Screening and Milling.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum scrap screened and milled

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

Total suspended solids

.000

.000

Oil and grease

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(c) Subpart C—Dross Washing.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of dross washed

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

Total suspended solids

.000

.000

Oil and grease

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(d) Subpart C—Demagging Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum demagged

Lead

0.216

0.100

Zinc

0.786

0.324

Aluminum

4.711

2.090

Ammonia (as N)

102.800

45.180

Total suspended solids

11.570

9.252

Oil and grease

7.710

7.710

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(e) Subpart C—Delacquering Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum delacquered

Lead

0.093

0.043

Zinc

0.340

0.140

Aluminum

2.035

0.903

Ammonia (as N)

44.389

19.514

Total phenolics (4-AAP method) 1

0.004

Total suspended solids

4.995

3.996

Oil and grease

3.330

3.330

pH

( 2 )

( 2 )

1 At the source.

2 Within the range of 7.0 to 10.0 at all times.

(f) Subpart C—Direct Chill Casting Contact Cooling.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.372

.173

Zinc

1.356

.558

Aluminum

8.120

3.602

Ammonia (as N)

177.200

77.880

Total suspended solids

19.940

15.950

Oil and grease

13.290

13.290

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(g) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum cast

Lead

0.019

0.009

Zinc

0.068

0.028

Aluminum

0.409

0.182

Ammonia (as N)

8.931

3.926

Total suspended solids

1.005

0.804

Oil and grease

0.670

0.670

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(h) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Practiced On Site).

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

Total suspended solids

.000

.000

Oil and grease

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(i) Subpart C—Stationary Casting Contact Cooling.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

Total suspended solids

.000

.000

Oil and grease

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

(j) Subpart C—Shot Casting Contact Cooling.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Aluminum

.000

.000

Ammonia (as N)

.000

.000

Total suspended solids

.000

.000

Oil and grease

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.0 to 10.0 at all times.

§ 421.35 Pretreatment standards for existing sources.

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 secondary aluminum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart C—Scrap Drying Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum scrap dried

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(b) Subpart C—Scrap Screening and Milling.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum scrap screened and milled

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(c) Subpart C—Dross Washing.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of dross washed

Lead

3.043

1.413

Zinc

11.090

4.565

Ammonia (as N)

1,449.000

636.000

(d) Subpart C—Demagging Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum demagged

Lead

0.216

0.100

Zinc

0.786

0.324

Amomonia (as N)

102.800

45.180

(e) Subpart C—Delacquering Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum delacquered

Lead

0.093

0.043

Zinc

0.340

0.140

Ammonia (as N)

44.389

19.514

Total phenolics (4-AAP) method) 1

0.004

1 At the source.

(f) Subpart C—Direct Chill Casting Contact Cooling.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.372

.173

Zinc

1.356

.558

Ammonia (as N)

177.200

77.800

(g) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum cast

Lead

0.019

0.009

Zinc

0.068

0.028

Amomonia (as N)

8.931

3.926

(h) Subpart C—Ingot Conveyor Casting Contact Cooling. (When Chlorine Demagging Wet Air Pollution Control is Practiced On Site.)

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(i) Subpart C—Stationary Casting Contact Cooling.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(j) Subpart C—Shot Casting Contact Cooling.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

§ 421.36 Pretreatment standards for new sources.

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 introduced in secondary aluminum process wastewater into a POTW shall not exceed the following values:

(a) Subpart C—Scrap Drying Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum scrap dried

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(b) Subpart C—Scrap Screening and Milling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum scrap screened and milled

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(c) Subpart C—Dross Washing.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of dross washed

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(d) Subpart C—Demagging Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum demagged

Lead

0.216

0.100

Zinc

0.786

0.324

Amomonia (as N)

102.800

45.180

(e) Subpart C—Delacquering Wet Air Pollution Control

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum delacquered

Lead

0.093

0.043

Zinc

0.340

0.140

Ammonia (as N)

44.389

19.514

Total phenolics (4-AAP method) 1

0.004

1 At the source.

(f) Subpart C—Direct Chill Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.372

.173

Zinc

1.356

.558

Ammonia (as N)

177.200

77.880

(g) Subpart C—Ingot Conveyor Casting Control Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (lb/million lbs) of aluminum cast

Lead

0.019

0.009

Zinc

0.068

0.028

Amomonia (as N)

8.931

3.926

(h) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control Is Practiced on Site).

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(i) Subpart C—Stationary Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

(j) Subpart C—Shot Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of aluminum cast

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

§ 421.40 Applicability: Description of the primary copper smelting subcategory.

The provisions of this subpart apply to process wastewater discharges resulting from the primary smelting of copper from ore or ore concentrates. Primary copper smelting includes, but is not limited to, roasting, converting, leaching if preceded by a pyrometallurgical step, slag granulation and dumping, fire refining, and the casting of products from these operations.

§ 421.41 Specialized definitions.

For the purpose of this subpart:

(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) In the event that the waste streams covered by this subpart are combined for treatment or discharge with waste streams covered by Subparts E—Primary Electrolytic Copper Refining and/or Subpart I—Metallurgical Acid Plants, the quantity of each pollutant or pollutant property discharged shall not exceed the quantity of each pollutant or pollutant property which could be discharged if each waste stream were discharged separately.

(c) For all impoundments constructed prior to the effective date of the interim final regulation (40 FR 8513), the term “within the impoundment,” when used to calculate the volume of process wastewater which may be discharged, means the water surface area within the impoundment at maximum capacity plus the surface area of the inside and outside slopes of the impoundment dam as well as the surface area between the outside edge of the impoundment dam and any seepage ditch adjacent to the dam upon which rain falls and is returned to the impoundment. For the purpose of such calculations, the surface area allowances set forth above shall not exceed more than 30 percent of the water surface area within the impoundment dam at maximum capacity.

(d) For all impoundments constructed on or after the effective date of the interim final regulation (the interim regulation was effective February 27, 1975; 40 FR 8513, February 27, 1975), the term “within the impoundment,” for purposes of calculating the volume of process wastewater which may be discharged, means the water surface area within the impoundment at maximum capacity.

§ 421.42 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

(a) Except as provided in 40 CFR 125.30 through 125.32 and paragraph (b) of this section, 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): There shall be no discharge of process wastewater pollutants to navigable waters.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 10-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 10-year, 24-hour rainfall event, when such event occurs.

§ 421.43 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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) Subject to the provisions of paragraph (b) of this section, there shall be no discharge of process wastewater pollutants into navigable waters.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 25-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 25-year, 24-hour rainfall event, when such event occurs.

§ 421.44 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: There shall be discharge of process wastewater pollutants into navigable waters.

§ 421.46 Pretreatment standards for new sources.

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 primary copper smelting process wastewater introduced into a POTW shall not exceed the following values: There shall be no discharge of process wastewater pollutants into a publicly owned treatment works.

§ 421.50 Applicability: Description of the primary electrolytic copper refining subcategory.

The provisions of this subpart apply to process wastewater discharges resulting from the electrolytic refining of primary copper, including, but not limited to, anode casting performed at refineries which are not located on-site with a smelter, product casting, and by-product recovery.

§ 421.51 Specialized definitions.

For the purpose of this subpart:

(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 electrolytically refined copper.

§ 421.52 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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):

Effluent Limitations

Effluent characteristic

Maximum for any 1 day

Average of Daily values for 30 consecutive days shall not exceed

(Metric units, kg/kkg of product; English units, pounds per 1,000 lb of product)

Total suspended solids

0.100

0.050

Copper

0.0017

0.0008

Cadmium

0.00006

0.00003

Lead

0.0006

0.0026

Zinc

0.0012

0.0003

pH

( 1 )

( 1 )

1 Within the range of 6.0 to 9.0.

§ 421.53 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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 E—Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of copper cast

Arsenic

.692

.309

Copper

.638

.304

Nickel

.274

.184

(b) Subpart E—Anode and Cathode Rinse.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of cathode copper production

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

(c) Subpart E—Spent Electrolyte.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of copper cathode production

Arsenic

.068

.031

Copper

.063

.030

Nickel

.027

.018

(d) Subpart E—Casting Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of casting production

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

(e) Subpart E—By-Product Recovery.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of product recovered from electrolytic slimes processing

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

§ 421.54 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Subpart E—Casting Contact Cooling.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of copper cast

Arsenic

.692

.309

Copper

.638

.304

Nickel

.274

.184

Total suspended solids

7.470

5.976

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(b) Subpart E—Anode and Cathode Rinse.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of cathode copper production

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(c) Subpart E—Spent Electrolyte.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of copper cathode production

Arsenic

.068

.031

Copper

.063

.030

Nickel

.027

.018

Total suspended solids

.735

.588

pH

( 1 )

( 1 )

1 Within the range 7.5 to 10.0 at all times.

(d) Subpart E—Casting Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of casting production

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(e) Subpart E—By-Product Recovery.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of product recovered from electrolytic slimes processing

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

§ 421.56 Pretreatment standards for new sources.

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 primary electrolytic copper refining process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart E—Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of copper cast

Arsenic

.692

.309

Copper

.638

.304

Nickel

.274

.184

(b) Subpart E—Anode and Cathode Rinse.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of cathode copper production

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

(c) Subpart E—Spent Electrolyte.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of cathode copper production

Arsenic

.068

.031

Copper

.063

.030

Nickel

.027

.018

(d) Subpart E—Casting Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of casting production

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

(e) Subpart E—By-Product Recovery.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of product recovered from electrolytic slimes processing

Arsenic

.000

.000

Copper

.000

.000

Nickel

.000

.000

§ 421.60 Applicability: Description of the secondary copper subcategory.

The provisions of this subpart are applicable to discharges resulting from the recovery, processing, and remelting of new and used copper scrap and residues to produce copper metal and copper alloys, but are not applicable to continuous rod casting.

§ 421.61 Specialized definitions.

For the purpose of this subpart:

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

(b) For all impoundments constructed prior to the effective date of this regulation the term “within the impoundment” when used for purposes of calculating the volume of process wastewater which may be discharged shall mean the water surface area within the impoundment at maximum capacity plus the surface area of the inside and outside slopes of the impoundment dam as well as the surface area between the outside edge of the impoundment dam and any seepage ditch immediately adjacent to the dam upon which rain falls and is returned to the impoundment. For the purpose of such calculations, the surface area allowances set forth above shall not be more than 30 percent of the water surface area within the impoundment dam at maximum capacity.

(c) For all impoundments constructed on or after the effective date of this regulation, the term “within the impoundment” for purposes of calculating the volume of process wastewater which may be discharged shall mean the water surface area within the impoundment at maximum capacity.

(d) The term pond water surface area when used for the purpose of calculating the volume of wastewater which may be discharged shall mean the water surface area of the pond created by the impoundment for storage of process wastewater at normal operating level. This surface shall in no case be less than one-third of the surface area of the maximum amount of water which could be contained by the impoundment. The normal operating level shall be the average level of the pond during the preceding calendar month.

§ 421.62 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

(a) 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: Subject to the provisions of paragraphs (b), (c), and (d) of this section, there shall be no discharge of process wastewater pollutants into navigable waters.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 10-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration for the areas in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 10-year, 24-hour rainfall event, when such event occurs.

(c) During any calendar month there may be discharged from a process wastewater impoundment either a volume of process wastewater equal to the difference between the precipitation for the month that falls within the impoundment and either the evaporation from the pond water surface area for that month, or a volume of process wastewater equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation from the pond water surface area as establsihed by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center), whichever is greater.

(d) Any process wastewater discharged pursuant to paragraph (c) of this section shall comply with each of the following requirements:

Effluent limitations

Effluent characteristic

Maximum for any 1 day

Average of daily values for 30 consecutive days shall not exceed

Metric Units (mg/l)

English Units (ppm)

TSS

50

25

Cu

0.5

0.25

Zn

10

5

Oil and grease

20

10

pH

( 1 )

( 1 )

1 Within the range of 6.0 to 9.0.

§ 421.63 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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) Subject to the provisions of paragraph (b) of this section, there shall be no discharge of process wastewater pollutants into navigable waters.

(b) a process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 25-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 25-year, 24-hour rainfall event, when such event occurs.

§ 421.64 Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: There shall be no discharge of process wastewater pollutants into navigable waters.

§ 421.65 Pretreatment standards for existing sources.

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 secondary copper process wastewater introduced into a POTW shall not exceed the following values:

(a) There shall be no discharge of process wastewater pollutants into a publicly owned treatment works subject to the provisions of paragraph (b) of this section.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 25-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 25-year, 24-hour rainfall event, when such event occurs.

§ 421.66 Pretreatment standards for new sources.

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 secondary copper process wastewater introduced into a POTW shall not exceed the following values: There shall be no discharge of process wastewater pollutants into a publicly owned treatment works.

§ 421.70 Applicability: Description of the primary lead subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of lead at primary lead smelters and refineries.

§ 421.71 Specialized definitions.

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

§ 421.72 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 control technology currently available:

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of sinter production

Lead

594.000

270.000

Zinc

525.000

219.600

Total suspended solids

14,760.000

7,020.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furance lead bullion produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(c) Subpart G—Blast Furnace Slag Granulation.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furance lead bullion produced

Lead

6,155.000

2,798.000

Zinc

5,446.000

2,276.000

Total suspended solids

153,000.000

72,740.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(d) Subpart G—Dross Reverberatory Slag Granulation.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated

Lead

9,499.000

4,318.000

Zinc

8,405.000

3,512.000

Total suspended solids

236,000.000

112,300.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of dross reverberatory furnace production

Lead

15,920.000

7,235.000

Zinc

14,080.000

5,884.000

Total suspended solids

395,500.000

188,100.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furance lead bullion produced

Lead

702.900

319.500

Zinc

622.000

259.900

Total suspended solids

17,470.000

8,307.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(g) Subpart G—Hard Lead Refining Slag Granulation.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(h) Subpart G—Hard Lead Refining Air Pollution Control.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

32,730.000

14,880.000

Zinc

28,960.000

12,100.000

Total suspended solids

813,300.000

386,800.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(i) Subpart G—Facility Washdown.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(j) Subpart G—Employee Handwash.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

5.445

2.475

Zinc

4.818

2.013

Total suspended solids

135.300

64.350

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(k) Subpart G—Respirator Wash.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

8.745

3.975

Zinc

7.738

3.233

Total suspended solids

217.300

103.400

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(l) Subpart G—Laundering of Uniforms.

BPT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

25.580

11.630

Zinc

22.630

9.455

Total suspended solids

635.500

302.300

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

§ 421.73 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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 G—Sinter Plant Materials Handling Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of sinter production

Lead

100.800

46.800

Zinc

367.200

151.200

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(c) Subpart G—Blast Furnace Slag Granulation.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(d) Subpart G—Dross Reverberatory Slag Granulation.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated

Lead

1,612.000

748.400

Zinc

5,872.000

2,418.000

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of dross reverberatory furnace production

Lead

.000

.000

Zinc

.000

.000

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnance lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(g) Subpart G—Hard Lead Refining Slag Granulation.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

(i) Subpart G—Facility Washdown.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(j) Subpart G—Employee Handwash.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.924

.429

Zinc

3.366

1.386

(k) Subpart G—Respirator Wash.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

1.484

.689

Zinc

5.406

2.226

(l) Subpart G—Laundering of Uniforms.

BAT Effluent Limitations

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produce

Lead

4.340

2.015

Zinc

15.810

6.510

§ 421.74 Standards of performance for new sources.

Any new source subject to this subpart must achieve the following performance standards:

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of sinter production

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(c) Subpart G—Blast Furnace Slag Granulation.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnance lead bullion produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(d) Subpart G—Dross Reverberatory Slag Granulation.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of dross reverberatory furnace production

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(g) Subpart G—Hard Lead Refining Slag Granulation.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

1 Within the range of 7.5 to 10.0 at all times.

(i) Subpart G—Facility Washdown.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.000

.000

Zinc

.000

.000

Total suspended solids

.000

.000

pH

( 1 )

( 1 )

Within the range of 7.5 to 10.0 at all times.

(j) Subpart G—Employee Handwash.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.924

.429

Zinc

3.366

1.386

Total suspended solids

49.500

39.600

pH

( 1 )

( 1 )

Within the range of 7.5 to 10.0 at all times.

(k) Subpart G—Respirator Wash.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

1.484

.689

Zinc

5.406

2.226

Total suspended solids

79.500

63.600

pH

( 1 )

( 1 )

Within the range of 7.5 to 10.0 at all times.

(l) Subpart G—Laundering of Uniforms.

NSPS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

4.340

2.015

Zinc

15.810

6.510

Total suspended solids

232.500

186.000

pH

( 1 )

( 1 )

Within the range of 7.5 to 10.0 at all times.

§ 421.75 Pretreatment standards for existing sources.

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 mut comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary lead process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of sinter production

Lead

100.800

46.800

Zinc

367.200

151.200

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

PSES

Pollutant or polluntant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pound per billion pounds) of blast furnance lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(c) Subpart G—Blast Furnace Slag Granulation.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pound per billion pounds) of blast furance lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(d) Subpart G—Dross Reverberatory Slag Granulation.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated

Lead

1,612.000

748.400

Zinc

5,872.000

2,418.000

(e) Subpart G—Dross Reverberatory Furnance Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of dross reverberatory furnace production

Lead

.000

.000

Zinc

.000

.000

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(g) Subpart G—Hard Lead Refining Slag Granulation.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

(i) Subpart G—Facility Washdown.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced.

Lead

.000

.000

Zinc

.000

.000

(j) Subpart G—Employee Handwash.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.924

.429

Zinc

3.366

1.386

(k) Subpart G—Respirator Wash.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

1.484

.689

Zinc

5.406

2.226

(l) Subpart G—Laundering of Uniforms.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

4.340

2.015

Zinc

15.810

6.510

§ 421.76 Pretreatment standards for new sources.

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 primary lead process wastewaters introduced into a POTW shall not exceed the following values.

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of sinter production

Lead

.000

.000

Zinc

.000

.000

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(c) Subpart G—Blast Furnace Slag Granulation.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(d) Subpart G—Dross Reverberatory Slag Granulation.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of slag, speiss, or matte granulated

Lead

.000

.000

Zinc

.000

.000

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of dross reverberatory furnace production

Lead

.000

.000

Zinc

.000

.000

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of blast furnace lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(g) Subpart G—Hard Lead Refining Slag Granulation.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of hard lead produced

Lead

.000

.000

Zinc

.000

.000

(i) Subpart G—Facility Washdown.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.000

.000

Zinc

.000

.000

(j) Subpart G—Employee Handwash.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

.924

.429

Zinc

3.366

1.386

(k) Subpart G—Respirator Wash.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

1.484

.689

Zinc

5.406

2.226

(l) Subpart G—Laundering of Uniforms.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kkg (pounds per billion pounds) of lead bullion produced

Lead

4.340

2.015

Zinc

15.810

6.510

§ 421.80 Applicability: Description of the primary zinc subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of primary zinc by either electrolytic or pyrolytic means.