40 CFR 421.232 - 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 U [§ 421.230 - § 421.237]

§ 421.232 - 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) Raw Material dust control.

BPT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material		Copper	0.146	0.077	Nickel	0.148	0.098	Ammonia (as N)	10.260	4.512	Cobalt	0.016	0.007	Total suspended solids	3.157	1.502	pH	( 1)	( 1)

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

(b) Nickel wash water.

BPT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of nickel powder washed		Copper	0.064	0.034	Nickel	0.065	0.043	Ammonia (as N)	4.515	1.985	Cobalt	0.007	0.003	Total suspended solids	1.389	0.660	pH	( 1)	( 1)

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

BPT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of nickel produced		Copper	24.120	12.700	Nickel	24.370	16.120	Ammonia (as N)	1,692.000	743.900	Cobalt	2.666	1.143	Total suspended solids	520.500	247.600	pH	( 1)	( 1)

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

(d) Cobalt reduction decant.

BPT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per million pounds) of cobalt produced		Copper	40.660	21.400	Nickel	41.080	27.180	Ammonia (as N)	2,852.000	1,254.000	Cobalt	4.494	1.926	Total suspended solids	877.300	417.300	pH	( 1)	( 1)

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

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 421.232