Except as provided in 40 CFR 125.30-125.32, 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 (BPT):
(a) The concentration of pollutants discharged in process wastewater from an open-cut mine plant site shall not exceed:
| Effluent limitations
|
|---|
| Effluent characteristics
| Instantaneous maximum
|
|---|
| Settleable solids | 0.2 ml/l |
(b) The concentration of pollutants discharged in process wastewater from a dredge plant site shall not exceed:
| Effluent characteristics
| Effluent limitations—Instantaneous maximum
|
|---|
| Settleable solids | 0.2 ml/l |
authority: Secs. 301, 304(b), (c) and (e), 306, 307, 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,
c,
1316,
1317,
and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 47 FR 54609, Dec. 3, 1982, unless otherwise noted.
cite as: 40 CFR 440.142