(a) Except as provided in 40 CFR 125.30 through 125.32 or Sec. 437.10(b), any existing point source subject to this subpart must achieve the following effluent limitations representing the application of BPT:
BPT Limitations------------------------------------------------------------------------
Maximum
Regulated parameter Maximum monthly avg.
daily \1\ \1\------------------------------------------------------------------------
Conventional Parameters------------------------------------------------------------------------O&G.........................................; 205 50.2pH.......................................... (\2\) (\2\)TSS......................................... 60.0 31.0------------------------------------------------------------------------
Metal Parameters------------------------------------------------------------------------Antimony.................................... 0.249 0.206Arsenic..................................... 0.162 0.104Cadmium..................................... 0.474 0.0962Chromium.................................... 15.5 3.07Cobalt...................................... 0.192 0.124Copper...................................... 4.14 1.06Lead........................................ 1.32 0.283Mercury..................................... 0.00234 0.000739Nickel...................................... 3.95 1.45Silver...................................... 0.120 0.0351Tin......................................... 0.409 0.120Titanium.................................... 0.0947 0.0618Vanadium.................................... 0.218 0.0662Zinc........................................ 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:
In-Plant Limitations------------------------------------------------------------------------
Maximum
Regulated parameter Maximum monthly
daily \1\ avg. \1\------------------------------------------------------------------------Cyanide....................................... 500 178------------------------------------------------------------------------\1\ mg/L (ppm). [65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71023, Dec. 22, 2003]