Section 235.81. Toxic pollutant effluent limitations and standards for direct discharge point sources that use end-of-pipe biological treatment.

 

(1)  Any point source subject to this subchapter must achieve discharges not exceeding the quantity determined by multiplying the process wastewater flow times the concentrations in the following table.

(2)  For chromium, copper, lead, nickel, zinc and total cyanide:

(a) The discharge quantity shall be determined by multiplying the concentrations listed in the following table for these pollutants times the flow from the metal-bearing waste streams for the metals and times the flow from the cyanide bearing waste streams for total cyanide.

(b) The metal-bearing waste streams and cyanide-bearing waste streams are defined as:

1. Those waste streams listed in Appendix A.

2. Any additional OCPSF process wastewater streams identified by the permitting authority on a case-by-case basis as metal or cyanide bearing based upon a determination that such streams contain significant amounts of the pollutants identified above.

(c) Any streams designated under par. (b) 2. shall be treated independently of other metal or cyanide bearing waste streams unless the permitting authority determines that the combination of such streams, prior to treatment, with the Appendix A waste streams will result in substantial reduction of these pollutants. This determination shall be based upon a review of relevant engineering, production and sampling information. - See PDF for table

1 All units are micrograms per liter.

2 Total zinc for rayon fiber manufacture that uses the viscose process and acrylic fiber manufacture that uses the zinc chloride/solvent process is 6,796 m g/l maximum for any one day and 3,325 m g/l maximum for monthly average.

History: Cr. Register, March, 1997, No. 495 , eff. 4-1-97.