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Code of Federal Regulations Title 40. Protection of Environment § 40.421.115 Pretreatment standards for existing sources

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

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 primary columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart K—Concentrate Digestion 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 concentrate digested

Lead

.174

.081

Zinc

.635

.261

Ammonia (as N)

82.910

36.450

Fluoride

21.770

12.440

(b) Subpart K—Solvent Extraction Raffinate.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of concentrate digested

Lead

 2.592

1.203

Zinc

 9.442

3.888

Ammonia (as N)

1,233.000

542.5000

Fluoride

 324.000

185.100

(c) Subpart K—Solvent Extraction 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 concentrate digested

Lead

.069

.032

Zinc

.251

.103

Ammonia (as N)

32.790

14.420

Fluoride

8.610

4.920

(d) Subpart K—Precipitation and Filtration.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of concentrate digested

Lead

 3.833

1.780

Zinc

 13.960

5.750

Ammonia (as N)

1,825.000

802.200

Fluoride

 479.100

273.800

(e) Subpart K—Precipitation and Filtration 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 concentrate digested

Lead

1.778

.826

Zinc

6.478

2.668

Ammonia (as N)

846.600

372.200

Fluoride

222.300

127.000

(f) Subpart K—Tantalum Salt Drying.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of tantalum salt dried

Lead

 16.950

 7.871

Zinc

 61.750

 25.430

Ammonia (as N)

8,070.000

3,548.000

Fluoride

2,119.000

1,211.000

(g) Subpart K—Oxides Calcining 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 columbium-tantalum oxide dried

Lead

1.076

.500

Zinc

3.919

1.614

Ammonia (as N)

512.200

225.200

Fluoride

134.500

76.840

(h) Subpart K—Reduction of Tantalum Salt to Metal.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of tantalum salt reduced

Lead

 46.500

 21.590

Zinc

 169.400

 69.750

Ammonia (as N)

22,140.000

9,732.000

Fluoride

5,813.000

3,322.000

(i) Subpart K—Reduction of Tantalum Salt to Metal 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 tantalum salt reduced

Lead

.572

.266

Zinc

2.084

.858

Ammonia (as N)

272.400

119.700

Fluoride

71.510

40.860

(j) Subpart K—Tantalum Powder Wash.

PSES

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of tantalum powder washed

Lead

 5.721

 2.656

Zinc

 20.840

 8.582

Ammonia (as N)

2,724.000

1,198.000

Fluoride

 715.200

 408.700

(k) Subpart K—Consolidation and Casting Contact Cooling.

PSNS

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of columbium or tantalum cast or consolidated

Lead

.000

.000

Zinc

.000

.000

Ammonia (as N)

.000

.000

Fluoride

.000

.000
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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.421.115 Pretreatment standards for existing sources - last updated October 02, 2022 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-421-115/

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