---
kind: "section"
citation: "40 C.F.R. § 421.33"
title: "40"
number: "421.33"
heading: "Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable."
url: "https://uscodex.org/cfr/40/421.33"
---

# §421.33. 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](/cfr/40/125.30..125.32.md), 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) **Subpart C—** Scrap Drying Wet Air Pollution Control.
- (b) **Subpart C—** Scrap Screening and Milling.
- (c) **Subpart C—** Dross Washing.
- (d) **Subpart C—** Demagging Wet Air Pollution Control.
- (e) **Subpart C—** Delacquering Wet Air Pollution Control.
- (f) **Subpart C—** Direct Chill Casting Contact Cooling.
- (g) **Subpart C—** Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).
- (h) **Subpart C—** Ingot Conveyor Casting Contact Cooling (When Chloride Demagging Wet Air Pollution Control is Practiced On Site).
- (i) **Subpart C—** Stationary Casting Contact Cooling.
- (j) **Subpart C—** Shot Casting Contact Cooling.

## Notes

### Amendments

[49 FR 8796, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 49 FR 29794, July 24, 1984; 52 FR 25559, July 7, 1987]

### Source

Source: 49 FR 8796, Mar. 8, 1984, unless otherwise noted.

### Authority

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

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

### Amendments

[49 FR 8796, Mar. 8, 1984; 49 FR 26739, June 29, 1984, as amended at 49 FR 29794, July 24, 1984; 52 FR 25559, July 7, 1987]