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, any existing point source subject to this subpart must achieve the following effluent limitations representing the application of BPT: Effluent Limitations 1 Regulated parameter Maximum daily Maximum monthly avg. TSS 113,000 34,800 Arsenic 84 72 Cadmium 71 26 Chromium 25 14 Copper 23 14 Lead 57 32 Mercury 2.3 1.3 Silver 13 8 Titanium 60 22 Zinc 82 54 pH ( 2 ) ( 2 ) 1 Micrograms per liter (ppb) 2 Within the range 6 to 9.