Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 235 - Organic chemical manufacturing › Subchapter X - Direct Discharge Point Sources That Do Not Use End-of-Pipe Biological Treatment › Section NR 235.91 - Toxic pollutant effluent limitations and standards for direct discharge point sources that do not use end-of-pipe biological treatment

Current through June 24, 2024
(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.
Sources Not Using End of Pipe Biological Treatment
BAT Effluent Limitations and
								  NSPS1
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
µg/l
µg/l
Acenaphthene
47
19
Acenaphthylene
47
19
Acrylonitrile
232
94
Anthracene
47
19
Benzene
134
57
Benzo(a)anthracene
47
19
3,4-Benzofluoranthene
48
20
Benzo(k)fluoranthene
47
19
Benzo(a)pyrene
48
20
Bis(2-ethylhexyl)phthalate
258
95
Carbon tetrachloride
380
142
Chlorobenzene
380
142
Chloroethane
295
110
Chloroform
325
111
Chrysene
47
19
Di-n-butyl phthalate
43
20
1,2-Dichlorobenzene
794
196
1,3-Dichlorobenzene
380
142
1,4-Dichlorobenzene
380
142
1,1-Dichloroethane
59
22
1,2-Dichloroethane
574
180
1,1-Dichloroethylene
60
22
1,2-trans-Dichloroethylene
66
25
1,2-Dichloropropane
794
196
1,3-Dichloropropylene
794
196
Diethyl phthalate
113
46
2,4-Dimethylphenol
47
19
Dimethyl phthalate
47
19
4,6-Dinitro-o-cresol
277
78
2,4-Dinitrophenol
4,291
1,207
Ethylbenzene
380
142
Fluoranthene
54
22
Fluorene
47
19
Hexachlorobenzene
794
196
Hexachlorobutadiene
380
142
Hexachloroethane
794
196
Methyl chloride
295
110
Methylene chloride
170
36
Naphthalene
47
19
Nitrobenzene
6,402
2,237
2-Nitrophenol
231
65
4-Nitrophenol
576
162
Phenanthrene
47
19
Phenol
47
19
Pyrene
48
20
Tetrachloroethylene
164
52
Toluene
74
28
Total Chromium
2,770
1,110
Total Copper
3,380
1,450
Total Cyanide
1,200
420
Total Lead
690
320
Total Nickel
3,980
1,690
Total Zinc2
2,610
1,050
1,2,4-Trichlorobenzene
794
196
1,1,1-Trichloroethane
59
22
1,1,2-Trichloroethane
127
32
Trichloroethylene
69
26
Vinyl chloride
172
97
1All units are micrograms per
					 liter.
2Total Zinc for rayon fiber
					 manufacture that uses the viscose process and acrylic fibers manufacture that
					 uses the zinc chloride/solvent process is 6,796 mg/l maximum for any one day
					 and 3,325 mg/l maximum for monthly average.