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Title 40: Protection of Environment
CHAPTER I: ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
SUBCHAPTER N: EFFLUENT GUIDELINES AND STANDARDS
PART 434: COAL MINING POINT SOURCE CATEGORY BPT, BAT, BCT LIMITATIONS AND NEW SOURCE PERFORMANCE STANDARDS
Subpart B: Coal Preparation Plants and Coal Preparation Plant Associated Areas
434.22 - Effluent limitation guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
(a) 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 any existing coal preparation plant and coal preparation plant associated areas subject to the provisions of this subpart after application of the best practicable control technology currently available if discharges from such point sources normally exhibit a pH of less than 6.0 prior to treatment:
| 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 | 35 |
| pH | 1 | 1 |
(b) Except as provided in 40 CFR 125.30-125.32, 40 CFR 401.17 and ?? 434.61 and 434.63 of this part, the following limitations establish the concentration or quality of pollutants which may be discharged by any existing coal preparation plant and coal preparation plant associated areas subject to the provisions of this subpart after application of the best practicable control technology currently available if discharges from such point sources normally exhibit a pH equal to or greater than 6.0 prior to treatment:
| 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 |
| TSS | 70 | 35 |
| pH | 1 | 1 |
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