Standards of performance for new sources.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Nonferrous Metals Manufacturing Point Source Category
  7. Primary Antimony Subcategory
  8. Standards of performance for new sources.

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§ 421.144 Standards of performance for new sources.

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

(a) Sodium Antimonate Autoclave Wastewater.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of antimony contained in sodium antimonate product
Antimony 30.150 13.440
Arsenic 21.720 9.687
Mercury 2.344 0.937
Total suspended solids 234.400 187.500
pH (1) (1)

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

(b) Fouled Anolyte.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of antimony metal produced by electrowinning
Antimony 30.150 13.440
Arsenic 21.720 9.687
Mercury 2.344 0.937
Total suspended solids 234.400 187.500
pH (1) (1)

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

(c) Cathode Antimony Wash Water.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of antimony metal produced by electrowinning
Antimony 60.310 26.870
Arsenic 43.430 19.370
Mercury 4.687 1.875
Total suspended solids 468.700 375.000
pH (1) (1)

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


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