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Code of Federal Regulations Title 40. Protection of Environment § 40.421.245 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 secondary nickel process wastewater introduced into a POTW must not exceed the following values:

(a) Slag reclaim tailings.

PSES FOR THE SECONDARY NICKEL SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of slag input to reclaim process

Chromium (total)

5.653

2.313

Copper

24.410

12.850

Nickel

24.670

16.320

(b) Acid reclaim leaching filtrate.

PSES FOR THE SECONDARY NICKEL SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of acid reclaim nickel produced

Chromium (total)

2.198

0.899

Copper

9.491

4.995

Nickel

9.590

6.344

(c) Acid reclaim leaching belt filter backwash

PSES FOR THE SECONDARY NICKEL SUBCATEGORY

Pollutant or pollutant property

Maximum for any 1 day

Maximum for monthly average

mg/kg (pounds per million pounds) of acid reclaim nickel produced

Chromium (total)

0.528

0.216

Copper

2.278

1.199

Nickel

2.302

1.523
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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.421.245 Pretreatment standards for existing sources - last updated October 02, 2022 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-421-245/

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