40 CFR 467.12 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

View all text of Subpart A [§ 467.10 - § 467.17]

§ 467.12 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 for the core operation and for the ancillary operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available:

Subpart A Core With an Annealing Furnace Scrubber

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils		Chromium	0.0360	0.0147	Cyanide	0.0237	0.0098	Zinc	0.119	0.0498	Aluminum	0.525	0.257	Oil and grease	1.634	0.980	Suspended solids	3.348	1.593	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart A Core Without an Annealing Furnace Scrubber

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils		Chromium	0.0244	0.010	Cyanide	0.0161	0.0067	Zinc	0.0808	0.0338	Aluminum	0.356	0.174	Oil and grease	1.11	0.664	Suspended solids	2.27	1.079	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart A Continuous Sheet Casting Spent Lubricant

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum sheet cast by continuous methods		Chromium	0.00086	0.00035	Cyanide	0.00057	0.00024	Zinc	0.0029	0.0012	Aluminum	0.0127	0.0063	Oil and grease	0.0393	0.0236	Suspended solids	0.0805	0.0383	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart A Solution Heat Treatment Contact Cooling Water

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum quenched		Chromium	3.39	1.39	Cyanide	2.24	0.93	Zinc	11.25	4.70	Aluminum	49.55	24.66	Oil and grease	154.10	92.46	Suspended solids	315.91	150.25	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart A Cleaning or Etching Bath

Pollutant or pollutant property	BPT 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	0.262	0.110	Aluminum	1.15	0.573	Oil and grease	3.58	2.15	Suspended solids	7.34	3.49	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart A Cleaning or Etching Rinse

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	6.12	2.51	Cyanide	4.04	1.67	Zinc	20.31	8.49	Aluminum	89.46	44.52	Oil and grease	278.24	166.95	Suspended solids	570.39	271.29	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart A Cleaning or Etching Scrubber Liquor

Pollutant or pollutant property	BPT effluent limitations		Maximum for any 1 day	Maximum for monthly average		mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched		Chromium	7.00	2.86	Cyanide	4.61	1.91	Zinc	23.22	9.70	Aluminum	102.24	50.88	Oil and grease	318.00	190.80	Suspended solids	651.90	310.05	pH	( 1)	( 1)

1 Within the range of 7.0 to 10 at all times.

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, 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 467.12