40 CFR 421.93 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

View all text of Subpart I [§ 421.90 - § 421.97]

§ 421.93 - Effluent limitations guidelines 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 shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

Subpart I—Metallurgical Acid Plant—BAT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average		mg/kg (pounds per/million pounds) of 100 pct sulfuric acid capacity		Arsenic	3.550	1.584	Cadmium	0.511	0.204	Copper	3.269	1.558	Lead	0.715	0.332	Zinc	2.605	1.073	Fluoride 1	89.390	50.820	Molybdenum 1	[Reserved]	[Reserved].

1 For Molybdenum acid plants only.

[50 FR 38343, Sept. 20, 1985, as amended at 55 FR 31697, 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 421.93