Site Feedback

Title 40

Displaying title 40, up to date as of 6/11/2026. Title 40 was last amended 6/11/2026.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

§ 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]