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Title 40 Part 434 → Subpart E → §434.53

Title 40 → Chapter I → Subchapter N → Part 434 → Subpart E → §434.53

Electronic Code of Federal Regulations e-CFR

Title 40 Part 434 → Subpart E → §434.53

e-CFR data is current as of December 3, 2019

Title 40Chapter ISubchapter NPart 434Subpart E → §434.53


Title 40: Protection of Environment
PART 434—COAL MINING POINT SOURCE CATEGORY BPT, BAT, BCT LIMITATIONS AND NEW SOURCE PERFORMANCE STANDARDS
Subpart E—Post-Mining Areas


§434.53   Effluent limitations guidelines representing the degree of effluent reduction attainable by application of the best available technology economically achievable (BAT).

(a) Reclamation areas. The limitations of this subsection apply to discharges from reclamation areas until SMCRA bond release.

Except as provided in 40 CFR 125.30-125.32, and §§434.61 and 434.63(d)(2) 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 subsection after application of the best available technology economically achievable:

BAT Effluent Limitations

Pollutant or pollutant propertyLimitations
Settleable solids0.5 ml/l maximum not to be exceeded.

(b) Underground mine drainage. The limitations in this subsection apply to discharges from the underground workings of underground mines until SMCRA bond release.

(1) Except as provided in 40 CFR 125.30-125.32, and §§434.61, 434.62, and 434.63 of this part, the following limitations establish the concentration or quality of pollutants in acid or ferruginous mine drainage subject to the provisions of this subsection after application of the best available technology economically achievable:

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayAverage of daily values for 30 consecutive days
   Concentration in mg/l
Iron, total7.03.5
Manganese, total4.02.0

(2) Except as provided in 40 CFR 125.30-125.32, and §§434.61, and 434.63 of this part, the following limitations establish the concentration or quality of pollutants in alkaline mine drainage subject to the provisions of this subsection after application of the best available technology economically achievable:

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayAverage of daily values for 30 consecutive days
   Concentration in mg/l
Iron, total7.03.5

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