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Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 421.132: Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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Where this section sits in the code
  1. Title 40—Protection of Environment
  2. CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
  3. SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
  4. PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
  5. Subpart M—Secondary Lead Subcategory

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

(a) Subpart M—Battery Cracking

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead scrap produced

Antimony 1.932 .862

Arsenic 1.407 .579

Lead .283 .135

Zinc .983 .411

Ammonia (as N) .000 .000

Total suspended solids 27.600 13.130

pH (1) (1)

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

(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from smelting

Antimony 7.491 3.341

Arsenic 5.455 2.245

Lead 1.096 .522

Zinc 3.811 1.592

Ammonia (as N) .000 .000

Total suspended solids 107.000 50.900

pH (1) (1)

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

(c) Subpart M—Kettle Wet Air Pollution Control

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from refining

Antimony .129 .058

Arsenic .094 .039

Lead .019 .009

Zinc .066 .027

Ammonia (as N) .000 .000

Total suspended solids 1.845 .878

pH (1) (1)

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

(d) Subpart M—Lead Paste Desulfurization

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead processed through desulfurization

Antimony .000 .000

Arsenic .000 .000

Lead .000 .000

Zinc .000 .000

Ammonia (as N) .000 .000

Total suspended solids .000 .000

pH (1) (1)

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

(e) Subpart M—Casting Contact Cooling

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

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

Antimony .634 .283

Arsenic .462 .190

Lead .093 .044

Zinc .323 .135

Ammonia (as N) .000 .000

Total suspended solids 9.061 4.310

pH (1) (1)

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

(f) Subpart M—Truck Wash.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from smelting

Antimony .060 .027

Arsenic .044 .018

Lead .009 .004

Zinc .031 .013

Ammonia (as N) .000 .000

Total suspended solids .861 .410

pH (1) (1)

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

(g) Subpart M—Facility Washdown

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from smelting

Antimony .000 .000

Arsenic .000 .000

Lead .000 .000

Zinc .000 .000

Ammonia (as N) .000 .000

Total suspended solids .000 .000

pH (1) (1)

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

(h) Subpart M—Battery Case Classification.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead scrap produced

Antimony .000 .000

Arsenic .000 .000

Lead .000 .000

Zinc .000 .000

Ammonia (as N) .000 .000

Total suspended solids .000 .000

pH (1) (1)

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

(i) Subpart M—Employee Handwash.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from smelting

Antimony .077 .035

Arsenic .056 .023

Lead .011 .005

Zinc .039 .016

Ammonia (as N) .000 .000

Total suspended solids 1.107 .527

pH (1) (1)

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

(j) Subpart M—Employee Respirator Wash.

BPT Effulent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from smelting

Antimony .126 .056

Arsenic .092 .038

Lead .018 .009

Zinc .064 .027

Ammonia (as N) .000 .000

Total suspended solids 1.804 .858

pH (1) (1)

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

(k) Subpart M—Laundering of Uniforms.

BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of lead produced from smelting

Antimony .367 .164

Arsenic .268 .110

Lead .054 .026

Zinc .187 .078

Ammonia (as N) .000 .000

Total suspended solids 5.248 2.496

pH (1) (1)

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

Collected 2026-08-27T02:26:04Z. Source file · JSON

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