1. Regulations
  2. title 40
  3. chapter I-i31
  4. part 465
  5. subpart B
  6. § 465.21

View all text of Subpart B [§ 465.20 - § 465.25]

§ 465.21 - Effluent limitations 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 must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available:

Subpart B

Pollutant or pollutant property BPT effluent limitations Maximum for any 1 day Maximum for monthly average mg/m 2 (pounds per 1 million ft 2) of area processed Chromium1.10(0.23)0.45(0.091) Copper4.96(1.02)2.61(0.54) Cyanide0.76(0.16)0.32(0.064) Zinc3.47(0.71)1.46(0.30) Iron3.21(0.66)1.65(0.34) Oil and grease52.2(10.7)31.3(6.42) TSS107.0(21.9)52.2(10.7) pH( 1)( 1)( 1)( 1)

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

[47 FR 54244, Dec. 1, 1982; 49 FR 33648, Aug. 24, 1984]

AUTHORITY: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 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) (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217.

SOURCE: 47 FR 54244, Dec. 1, 1982, unless otherwise noted.

CITE AS: 40 CFR 465.21