The provisions of this subpart K are applicable to discharges from (a) mines that produce platinum ore and (b) mills that process platinum ore.
Except as provided in subpart L of this part and 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 available technology economically achievable (BAT):
(a) The concentration of pollutants discharged in mine drainage from mines that produce platinum bearing ores from open-pit or underground operations other than placer deposits shall not exceed:
| Effluent characteristic
| Effluent limitations
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| | Milligrams per liter
|
| Cu | 0.30 | 0.15
|
| Zn | 1.5 | 0.75
|
| Pb | 0.6 | 0.3
|
| Hg | 0.002 | 0.001
|
| Cd | 0.10 | 0.05 |
(b) The concentration of pollutants discharged from mills that use the froth-flotation process alone, or in conjunction with other processes, for the beneficiation of platinum ores shall not exceed:
| Effluent characteristic
| Effluent limitations
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days
|
|---|
| | Milligrams per liter
|
| Cu | 0.30 | 0.15
|
| Zn | 1.0 | 0.5
|
| Pb | 0.6 | 0.3
|
| Hg | 0.002 | 0.001
|
| Cd | 0.10 | 0.05 |
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 440.113