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| Subpart C | Acid or Ferruginous Mine Drainage | 434.30 – 434.35 | ||||||||||||||||||
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33 U.S.C. 1311 1314(b), (c), (e), and (g), 1316(b) and (c), 1317(b) and (c), and 1361.
50 FR 41305, Oct. 9, 1985, unless otherwise noted.
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Subscribe to: 40 CFR Part 434 Subpart C
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The provisions of this subpart are applicable to acid or ferruginous mine drainage from an active mining area resulting from the mining of coal of any rank including, but not limited to, bituminous, lignite, and anthracite.
Except as provided in 40 CFR 125.30-125.32, 40 CFR 401.17, and §§ 434.61, 434.62 and 434.63 of this part, the following limitations establish the concentration or quality of pollutants which may be discharged by a point source subject to the provisions of this subpart after application of the best practicable control technology currently available:
| Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
|---|---|---|
| Concentration in mg/l | ||
| Iron, total | 7.0 | 3.5 |
| Manganese, total | 4.0 | 2.0 |
| TSS | 70.0 | 35.0 |
| pH | (1) | (1) |
| 1 Within the range 6.0 to 9.0 at all times. | ||
Except as provided in 40 CFR 125.30-125.32, 40 CFR 401.17, and §§ 434.61, 434.62 and 434.63 of this part, the following limitations establish the concentration or quality of pollutants which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable:
| Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
|---|---|---|
| Concentration in mg/l | ||
| Iron, total | 7.0 | 3.5 |
| Manganese, total | 4.0 | 2.0 |
Except as provided in 40 CFR 401.17, and §§ 434.61, 434.62 and 434.63 of this part, the following new source performance standards shall be achieved for any discharge from a new source subject to this subpart:
| Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
|---|---|---|
| Concentration in mg/l | ||
| Iron, total | 6.0 | 3.0 |
| Manganese, total | 4.0 | 2.0 |
| TSS | 70.0 | 35.0 |
| pH | (1) | (1) |
| 1 Within the range 6.0 to 9.0 at all times. | ||