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Code of Federal Regulations Title 40. Protection of Environment § 40.421.254 Standards of performance for new sources

Current as of October 02, 2022 | Updated by FindLaw Staff

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

(a) Smelter wet air pollution control.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/troy ounce of gold and silver smelted

Lead

0.364

0.169

Mercury

0.195

0.078

Silver

0.377

0.156

Zinc

1.326

0.546

Gold

0.130

Oil and Grease

13.000

13.000

Total suspended solids

19.500

15.600

pH

(1)

(1)

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

(b) Silver chloride reduction spent solution.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/troy ounce of silver reduced in solution

Lead

0.112

0.052

Mercury

0.060

0.024

Silver

0.116

0.048

Zinc

0.408

0.168

Gold

0.040

Oil and Grease

4.000

4.000

Total suspended solids

6.000

4.800

pH

(1)

(1)

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

(c) Electrolytic cells wet air pollution control.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/troy ounce of gold refined electrolytically

Lead

5.544

2.574

Mercury

2.970

1.188

Silver

5.742

2.376

Zinc

20.200

8.316

Gold

1.980

Oil and Grease

198.000

198.000

Total suspended solids

297.000

237.600

pH

(1)

(1)

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

(d) Electrolyte preparation wet air pollution control.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/troy ounce of silver in electrolyte produced

Lead

0.014

0.007

Mercury

0.008

0.003

Silver

0.015

0.006

Zinc

0.051

0.021

Gold

0.005

Oil and Grease

0.500

0.500

Total suspended solids

0.750

0.600

pH

(1)

(1)

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

(e) Calciner wet air pollution control.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of mercury condensed

Lead

6.160

2.860

Mercury

3.300

1.320

Silver

6.380

2.640

Zinc

22.440

9.240

Gold

2.200

Oil and Grease

220.000

220.000

Total suspended solids

330.000

264.000

pH

(1)

(1)

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

(f) Calcine quench water.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of mercury condensed

Lead

4.928

2.288

Mercury

2.640

1.056

Silver

5.104

2.112

Zinc

17.950

7.392

Gold

1.760

Oil and Grease

176.000

176.000

Total suspended solids

264.000

211.200

pH

(1)

(1)

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

(g) Calciner stack gas contract cooling water.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) or mercury condensed

Lead

1.162

0.540

Mercury

0.623

0.249

Silver

1.204

0.498

Zinc

4.233

1.743

Gold

0.415

Oil and Grease

41.500

41.500

Total suspended solids

62.250

49.800

pH

(1)

(1)

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

(h) Condenser blowdown.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of mercury condensed

Lead

3.864

1.794

Mercury

2.070

0.828

Silver

4.002

1.656

Zinc

14.080

5.796

Gold

1.380

Oil and Grease

138.000

138.000

Total suspended solids

207.000

165.600

pH

(1)

(1)

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

(i) Mercury cleaning bath water.

NSPS FOR THE PRIMARY PRECIOUS METALS AND MERCURY SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of Mercury condensed

Lead

0.392

0.182

Mercury

0.210

0.084

Silver

0.406

0.168

Zinc

1.428

0.588

Gold

0.140

Oil and Grease

14.000

14.000

Total suspended solids

21.000

16.800

pH

(1)

(1)

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

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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.421.254 Standards of performance for new sources - last updated October 02, 2022 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-421-254/

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