(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:
Regulated
parameter
| Maximum daily
1
| 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
|
(b) The following in-plant limitations apply to metal-bearing wastewater containing cyanide:
Regulated
parameter
| Maximum daily
1
| Maximum monthly avg.
1
|
---|
Cyanide | 500 | 178
|
[65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71023, Dec. 22, 2003]