40 CFR § 437.31
Effluent limitations attainable by the application of the best practicable control technology currently available (BPT)
June 9, 2020
CFR

Except as provided in 40 CFR 125.30 through 125.32 or §437.30(b), any existing point source subject to this subpart must achieve the following effluent limitations representing the application of BPT:

BPT Limitations

Open Table
Regulated
parameter
Maximum daily1 Maximum monthly avg.1
Conventional Parameters
BOD5 163 53.0
pH (2) (2)
TSS 216 61.3
Metal Parameters
Copper 0.865 0.757
Zinc 0.497 0.420
Organic Parameters
Acetone 30.2 7.97
Acetophenone 0.114 0.0562
2-Butanone 4.81 1.85
o-Cresol 1.92 0.561
p-Cresol 0.698 0.205
Phenol 3.65 1.08
Pyridine 0.370 0.182
2,4,6-Trichlorophenol 0.155 0.106

1mg/L (ppm).

2Within the range 6 to 9.

[65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71023, Dec. 22, 2003]


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