1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 421
  5. subpart N
  6. § 421.144

View all text of Subpart N [§ 421.140 - § 421.147]

§ 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 Antimony30.15013.440 Arsenic21.7209.687 Mercury2.3440.937 Total suspended solids234.400187.500 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 Antimony30.15013.440 Arsenic21.7209.687 Mercury2.3440.937 Total suspended solids234.400187.500 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 Antimony60.31026.870 Arsenic43.43019.370 Mercury4.6871.875 Total suspended solids468.700375.000 pH( 1)( 1)

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

AUTHORITY: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4.

SOURCE: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.

CITE AS: 40 CFR 421.144