1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 421
  5. subpart N
  6. § 421.143

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

§ 421.143 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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 available technology economically achievable:

(a) Sodium Antimonate Autoclave Wastewater.

BAT Limitations 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

(b) Fouled Anolyte.

BAT Limitations 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

(c) Cathode Antimony Wash Water

BAT Limitations for the Primary Antimony Subcategory

Pollutant of 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

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 421.143