40 C.F.R. § 437.31

Current through October 31, 2024

Section 437.31 - Effluent limitations attainable by the application of the best practicable control technology currently available (BPT)

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

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

¹ mg/L (ppm).

² Within the range 6 to 9.

40 C.F.R. §437.31

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