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Title 40 Part 434 → Subpart B → §434.23

Title 40 → Chapter I → Subchapter N → Part 434 → Subpart B → §434.23

Electronic Code of Federal Regulations e-CFR

Title 40 Part 434 → Subpart B → §434.23

e-CFR data is current as of December 12, 2019

Title 40Chapter ISubchapter NPart 434Subpart B → §434.23


Title 40: Protection of Environment
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


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

(a) 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 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 available technology economically achievable if discharges from such point sources normally exhibit a pH of less than 6.0 prior to treatment:

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

(b) 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 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 available technology economically achievable if discharges from such point sources normally exhibit a pH equal to or greater than 6.0 prior to treatment:

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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