40 CFR 445.21 - Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).

Regulations last checked for updates: Nov 22, 2024

Title 40 - Protection of Environment last revised: Nov 20, 2024

View all text of Subpart B [§ 445.20 - § 445.24]

§ 445.21 - Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).

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 which represent the application of BPT:

Effluent Limitations

Regulated parameter	Maximum daily ¹	Maximum monthly avg. ¹
BOD	140	37
TSS	88	27
Ammonia (as N)	10	4.9
α-Terpineol	0.033	0.016
Benzoic acid	0.12	0.071
p-Cresol	0.025	0.014
Phenol	0.026	0.015
Zinc	0.20	0.11
pH	( ²)	( ²)

¹ Milligrams per liter (mg/L, ppm)

² Within the range 6 to 9.

[65 FR 3048, Jan. 19, 2000; 65 FR 14344, Mar. 16, 2000]

authority: Secs. 301, 304, 306, 307, 308, 402 and 501 of the Clean Water Act, as amended (33 U.S.C. 1311,1314,1316,1317,1318,1342

source: 65 FR 3048, Jan. 19, 2000, unless otherwise noted.

cite as: 40 CFR 445.21