(a) Subject to the provisions of paragraph (b) of this section, the following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a point source subject to the provisions of this subpart after application of the best available demonstrated control technology.
(1) Discharges of process generated waste water and mine dewatering discharges, shall not exceed the following limitations:
| Effluent characteristic | Effluent limitations | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days shall not exceed— | |
| TSS | 60 mg/l | 30 mg/l. |
| pH | (1) | (1) |
1Within the range 6.0 to 9.0.
(b) Any overflow from facilities governed by this subpart shall not be subject to the limitations of paragraph (a) of this section if the facilities are designed, constructed and maintained to contain or treat the volume of waste water which would result from a 10-year 24-hour precipitation event.
[43 FR 9810, Mar. 10, 1978]
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