40 CFR 421.212 - 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 S [§ 421.210 - § 421.217]

§ 421.212 - 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 limitation representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Molybdenum sulfide leachate.

BPT Limitations for the Primary Molybdenum Rhenium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum monthly average		mg/kg (pounds per million pounds) of molybdenum sulfide leached		Arsenic	0.968	0.431	Lead	0.195	0.093	Nickle	0.889	0.588	Selenium	0.570	0.255	Molybdenum	[Reserved]	[Reserved].	Ammonia (as N)	61.720	27.130	Fluoride	16.210	9.214	Total suspended solids	18.980	9.029	pH	( 1)	( 1)

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

(b) Roaster SO2 scrubber.

BPT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant of pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of molybdenum sulfide roasted		Arsenic	3.509	1.561	Lead	0.705	0.336	Nickel	3.224	2.133	Selenium	2.065	0.924	Molybdenum	[Reserved]	[Reserved].	Ammonia (as N)	223.800	98.390	Fluoride	58.770	33.410	Total suspended solids	68.840	32.740	pH	( 1)	( 1)

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

(c) Molybdic oxide leachate.

BPT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of molybdenum contained in molybdic oxide leached		Arsenic	24.210	10.770	Lead	4.865	2.317	Nickel	22.240	14.710	Selenium	14.250	6.371	Molybdenum	[Reserved]	[Reserved]	Ammonia (as N)	1,544.000	678.800	Fluoride	405.400	230.500	Total suspended solids	474.900	225.900	pH	( 1)	( 1)

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

(d) Hydrogen reduction furnace scrubber.

BPT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of molybdenum metal powder produced		Arsenic	47.860	21.300	Lead	9.617	4.580	Nickel	43.970	29.080	Selenium	28.170	12.600	Molybdenum	[Reserved]	[Reserved]	Ammonia (as N)	3,052.000	1,342.000	Fluoride	801.400	455.700	Total suspended solids	938.800	446.500	pH	( 1)	( 1)

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

(e) Depleted rhenium scrubbing solution.

BPT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of molybdenum sulfide roasted		Arsenic	1.497	0.666	Lead	0.301	0.143	Nickel	1.375	0.909	Selenium	0.881	0.394	Molybdenum	[Reserved]	[Reserved]	Ammonia (as N)	95.440	41.960	Fluoride	25.060	14.250	Total suspended solids	29.360	13.960	pH	( 1)	( 1)

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

[50 FR 38355, Sept. 20, 1985, as amended at 55 FR 31701, 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 421.212