40 CFR 467.23 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

View all text of Subpart B [§ 467.20 - § 467.27]

§ 467.23 - Effluent limitations 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 must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. The discharge of process wastewater pollutants from the core shall not exceed the values set forth below:

Subpart B Core

Pollutant or pollutant property	BAT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum rolled with emulsions		Chromium	0.057	0.024	Cyanide	0.038	0.016	Zinc	0.19	0.079	Aluminum	0.84	0.42

Subpart B Direct Chill Casting Contact Cooling Water

Pollutant or pollutant property	BAT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cast		Chromium	0.59	0.24	Cyanide	0.39	0.16	Zinc	1.94	0.81	Aluminum	8.55	4.26

Subpart B Solution Heat Treatment Contact Cooling Water

Pollutant or pollutant property	BAT Effluent Limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum quenched		Chromium	0.90	0.37	Cyanide	0.59	0.25	Zinc	2.98	1.25	Aluminum	13.10	6.52

Subpart B Cleaning or Etching Bath

Pollutant or pollutant property	BAT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	0.079	0.032	Cyanide	0.052	0.022	Zinc	0.26	0.109	Aluminum	1.15	0.573

Subpart B Cleaning or Etching Rinse

Pollutant or pollutant property	BAT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	0.61	0.25	Cyanide	0.41	0.17	Zinc	2.03	0.85	Aluminum	8.95	4.45

Subpart B Cleaning or Etching Scrubber Liquor

Pollutant or pollutant property	BAT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	0.85	0.35	Cyanide	0.56	0.23	Zinc	2.82	1.18	Aluminum	12.43	6.19

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, Mar. 27, 1984]

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: 48 FR 49149, Oct. 24, 1983, unless otherwise noted.

CITE AS: 40 CFR 467.23