Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Coal Mining Point Source Category BPT, BAT, BCT Limitations and New Source Performance Standards
  7. Alkaline Mine Drainage
  8. Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

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§ 434.42 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

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 a point source subject to the provisions of this subpart after application of the best practicable control technology currently available:

Expand Table

BPT Effluent Limitations

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)

1 Within the range 6.0 to 9.0 at all times.


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