40 CFR 437.21 - Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).

§ 437.21 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 437.20(b), any existing point source subject to this subpart must achieve the following effluent limitations representing the application of BPT:
BPT Limitations
Regulatedparameter Maximum daily 1 Maximum monthly avg. 1
1 mg/L (ppm).
2 Within the range 6 to 9.
Conventional Parameters
O&G 127 38.0
pH (2) (2)
TSS 74.1 30.6
Metal Parameters
Arsenic 2.95 1.33
Cadmium 0.0172 0.0102
Chromium 0.746 0.323
Cobalt 56.4 18.8
Copper 0.500 0.242
Lead 0.350 0.160
Mercury 0.0172 0.00647
Tin 0.335 0.165
Zinc 8.26 4.50
Organic Parameters
Bis(2-ethylhexyl) phthalate 0.215 0.101
Butylbenzyl phthalate 0.188 0.0887
Carbazole 0.598 0.276
n-Decane 0.948 0.437
Fluoranthene 0.0537 0.0268
n-Octadecane 0.589 0.302
[65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71023, Dec. 22, 2003]

Title 40 published on 2013-07-01

no entries appear in the Federal Register after this date.

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