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

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. The Centralized Waste Treatment Point Source Category
  7. Metals Treatment and Recovery
  8. Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).

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§ 437.11 Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).

(a) Except as provided in 40 CFR 125.30 through 125.32 or § 437.10(b), any existing point source subject to this subpart must achieve the following effluent limitations representing the application of BPT:

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BPT Limitations

Regulated
parameter 		Maximum daily1 Maximum monthly avg.1
Conventional Parameters
O&G 205 50.2
pH (2) (2)
TSS 60.0 31.0
Metal Parameters
Antimony 0.249 0.206
Arsenic 0.162 0.104
Cadmium 0.474 0.0962
Chromium 15.5 3.07
Cobalt 0.192 0.124
Copper 4.14 1.06
Lead 1.32 0.283
Mercury 0.00234 0.000739
Nickel 3.95 1.45
Silver 0.120 0.0351
Tin 0.409 0.120
Titanium 0.0947 0.0618
Vanadium 0.218 0.0662
Zinc 2.87 0.641

1 mg/L (ppm).

2 Within the range 6 to 9.

(b) The following in-plant limitations apply to metal-bearing wastewater containing cyanide:

Expand Table

In-Plant Limitations

Regulated
parameter 		Maximum daily1 Maximum monthly avg.1
Cyanide 500 178

1 mg/L (ppm).

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


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