40 CFR 421.222 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

View all text of Subpart T [§ 421.220 - § 421.227]

§ 421.222 - Effluent limitations guidelines 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 shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Leach tailings.

BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced		Arsenic	40.778	18.145	Chromium	8.585	3.512	Lead	8.195	3.902	Nickel	37.460	24.779	Iron	23.410	11.902	Molybdenum	[Reserved]	[Reserved]	Ammonia (as N)	8078.000	3551.000	Total Suspended Solids	799.950	380.460	pH	( 1)	( 1)

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

(b) Molybdenum filtrate solvent extraction raffinate.

BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced		Arsenic	121.720	54.162	Chromium	25.625	10.483	Lead	24.460	11.648	Nickel	111.819	73.964	Iron	69.887	35.526	Molybdenum	[Reserved]	[Reserved]	Ammonia (as N)	24114.000	10600.000	Total Suspended Solids	2387.800	1135.660	pH	( 1)	( 1)

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

(c) Vanadium decomposition wet air pollution control.

BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of vanadium produced by decomposition		Arsenic	0.000	0.000	Chromium	0.000	0.000	Lead	0.000	0.000	Nickel	0.000	0.000	Iron	0.000	0.000	Molybdenum	0.000	0.000	Ammonia (as N)	0.000	0.000	Total suspended solids	0.000	0.000	pH	( 1)	( 1)

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

(d) Molybdenum drying wet air pollution control.

BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of molybdenum produced		Arsenic	0.000	0.000	Chromium	0.000	0.000	Lead	0.000	0.000	Nickel	0.000	0.000	Iron	0.000	0.000	Molybdenum	0.000	0.000	Ammonia (as N)	0.000	0.000	Total suspended solids	0.000	0.000	pH	( 1)	( 1)

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

(e) Pure Grade Molybdenum.

BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of pure molybdenum produced		Arsenic	48.655	21.650	Chromium	10.243	4.190	Lead	9.778	4.656	Nickel	44.698	29.566	Iron	27.936	14.201	Molybdenum	[Reserved]	[Reserved]	Ammonia (as N)	9638.000	4237.000	Total Suspended Solids	954.480	453.960	pH	( 1)	( 1)

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

[50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31703, Aug. 3, 1990]

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 421.222